DE102018001777A1 - Warming zones in kitchen worktops and processes for their manufacture and heatable object, control, automatic temperature control of holding zones in kitchen worktops - Google Patents

Abstract

The problem of keeping warm meals / meals of any kind and for any purpose has always existed in large kitchens of hospitals, senior citizens and retirement homes, and especially in private households. The food is currently and predominantly kept with separate external equipment (kitchen accessories) with all its advantages, but also with many obstructive disadvantages. Therefore, the invention was based on the task of integrating one in any type and form of warming zones in kitchen worktops. The materials stone, granite, laminated solid wood, coated MDF boards, Resopal-coated boards, stainless steel, etc. can be used. In order to significantly improve or eliminate all these problems, the kitchen countertops have been cut without cuts or cuts Resistance heating elements made of special compounds, conductive plastic or other materials, in conjunction with other various substrates, in the voltage ranges of 12 volts - 48 volts, and 230 volts find Depending on the model, these also have a PTC-like characteristic and can be regulated and controlled together with an RFID system or the new Smart Home technology. Furthermore, it is also possible to integrate an additional cold zone in the kitchen worktop ,

Description

Claim 1:

The problem of keeping warm meals / meals of any kind and for any purpose has always existed in large kitchens of hospitals, senior citizens and retirement homes, and especially in private households. The food is currently and predominantly kept with separate external equipment (kitchen accessories) with all its advantages, but also with many obstructive disadvantages.

Therefore, the invention was based on the object to integrate one in any type and form of warming zones in kitchen worktops. Materials such as stone, granite, laminated solid wood, coated MDF boards, formica coated boards, stainless steel, etc. can be used.

To significantly improve or eliminate all of these issues, the kitchen worktops have been designed without panel cut-outs, thus providing a complete, closed and surface-level kitchen countertop.

Here, the heating elements are installed from below in recesses / troughs of the worktops.

In these are installed with an insulating outer edge strip (on the circumference), thereby ensuring that too fast attack the holding temperature above the actual warming zone addition to the body ( 1 ) is transferred to the kitchen worktop.

This is also the isolation pot as in 4 and , 6 (13) shown.

Furthermore, it is also possible to integrate an additional cooling zone in the kitchen worktop, which will be discussed in more detail later.

There are resistance heating elements made of special compounds, conductive plastic or otherwise constructive structures, in conjunction with other various carrier materials, in the voltage ranges 12 Volt - 48 Volt, as well as in the 230 Volt range, use.

Depending on the model, these also have a PTC-like characteristic and can be controlled and controlled together with an RFID system or the new Smart Home technology.

The resistance heating plates are designed so that the possibility of a complete production of PCM (English phase change material), so-called polymeric phase change materials, conductive plastic, as well as multilayer pressed SMC material, filled conductive plastic or similar materials, which then in Connection with the heating plate or heating insert (from Az. 10 2016 007 920.7 and DE 10 2014108 553.1 , to which reference is made), although in a modified form, function and installation manner, in the kitchen worktops, are mounted and locked in the below-worked recesses / troughs and designed as a so-called external heating / heat element for the warming zones and so Use come.

Further advantageous embodiments emerge from the features of the subclaims.

Likewise underlying the object of the invention, which is characterized according to claim 1, characterized in that insertable resistance heating elements / heating plates are to be integrated into the different modules, constructions and equipment, especially in kitchen worktops, and according to the invention mentioned by the Characteristics of claim 1 are solved.

The present invention relates, according to claim 1, characterized in that an insertable and replaceable resistance heating plate with an internal heating element made of a special fleece with applied self-regulating filaments, as well as multilayer pressed SMC material, which are integrated in the self-regulating filaments, as well as from conductive plastics is also equipped with self-regulating filaments.

On the basis of the object of the invention, which is characterized according to claim 1, characterized in that both a method for temperature control, general control, and the heating elements provided with electrical contacts for 230 volts and also for the 12 volts to 48 volts range at the edge the Heizplattenoberfläche, which can be installed in kitchen worktops, which can be made of various materials, easily changeable and contactable.

Additional embodiments according to 8th to 10 are possibilities that are characterized according to claim 1, characterized in that variants are also shown with an installation from above, but where nevertheless a surface flatness is guaranteed.

Due to the special construction of the kitchen worktop, it is possible to work together with the actual insertable heating plate made of Az. 10 2016 007 920.7, consisting of leifähigem plastic, multilayer, pressed SMC material or similar materials, and in conjunction with the internal heating insert made of Az. DE 10 2014108 553.1 , is also provided, as in the orders of 1 to 3 illustrated, as a further embodiment, a cooling zone or cooled storage tray which are based on the principle of a Peltier element or heatpipe, and according to the reverse principle of a latent heat storage with PCM (English phase change material) are integrated.

Here, too, the power supply is designed both for mains operation with 230 volts, as well as optionally for the range of 12 to 48 volts.

It was also based on the present invention, which is characterized according to claim 1, that in the kitchen worktop integrated Heizplattenelemente, without changing the basic concept of the kitchen worktop what the built-in versions, to supplement another zone that is designed as a cold zone.

This is based on the reverse principle of a latent heat storage with PCM, which means that it is a phase change material (or similar) and for cooling for the extra cold zone in the kitchen countertop serves.

Known from the past and thus state of the art:

Since the early fifties, keeping warm is a very big topic, as evidenced by some writings.

Therefore, of course, there are already some warming systems on the market, e.g. for the purpose of food or dishwashing, but so have their problems. However, these are mainly intended and known for the commercial sector. Hospitals, old people's homes, old people's homes and nursing homes as well as schools, day-care centers, etc. are mentioned here.

From the past, there are plenty of external possibilities known, as far as so-called hot plates are concerned, which are also set out in some documents, to which reference will be made in the following.

Known from the Scriptures DE 10 2014108 553 B4 is a heatable serving tray using a heating lamina pressed into an SMC material and for use in food distribution systems, in dedicated heating cars, in hospitals, nursing homes, retirement homes, etc.

Also is from the Scriptures DE 10 2016 007 920 A1 It is known that here also made of SMC material heating plate with internal Heizinlay, but in addition insertable and also interchangeable, be used in various constructions of Servier tray.

Also from the Scriptures DE 3302 489 A1 It turns out that this is an external additional equipment, based on a radiant heater, for heating of cooking and hot plates, in particular for glass ceramic plates. In doing so, it is heated in an insulating bowl-shaped depression.

So is from Scripture DE 10 2014 108 553 A1 a heated Servier tray known, which also offers a warming ability through a special control technology.

Unlike in the Scriptures DE 10 2014 108 553 A1 described type of heat pad to introduce directly into a serving tray surface, in the present invention insertable heating elements in specially for this purpose, on the underside of a kitchen worktop, with incorporated recesses into which the heating elements are inserted and fixed.

The font DE 10 2009 054 792 A1 states that this is a table ventilation device with additional functions located in the lid.

In this cover or platform both a lighting and a hot plate or the like can be inserted.

Known from the Scriptures DE 2007 000 766 U1 is a modular system, as in series switchable hot plates, but which can also be used as individual components, for an external equipment, mostly for commercial kitchen users, is shown. Whereby an additional element as a heat storage as a heat storage medium must be inserted into a housing.

A rollable warming cabinet is shown in Austrian Patent Specification No. 193031.

Here, individually erectable hot plates are inserted into the cabinet for heating, which then later in a Catering business, on the guest tables to keep the food warm.

In the scriptures DE 10 2009 000 838 A1 such as DE 10 2009 000 838 B4 For example, a warming zone which is heated by a heating element is described, which is operated together with a plurality of cooking zones in a hob, supported on a carrier element and supported by spring elements. Wherein a plurality of heating zone heating elements are placed by a cover plate.

As the operating mode of the heating elements for the cooking zones / holding zone to be heated, the induction technique was used.

In Scripture EP 00 0001570 930 A1 It is described that this is a purely industrial application in which a casting device for the introduction of melt from a melting zone to a holding zone, and in particular is designed in low pressure systems has been described.

The font DE 196 37 896 C1 describes a holder for a cooking surface with a frame unit, which has a support for installation in a section of a worktop.

Also known are industrial external cooking / heating plates, which are based in the field of induction technology, but also come as built-in appliances used. However, these are generally designed more as cooking plates.

In all the cited patent literature is mainly to auxiliary equipment for heating hot plates, in particular around table or cabinet-like equipment.

The technique in the cited documents is well-suited to heating various external erectable plates, but is not related to the present invention.

Of course, there are other cited writings that have not been discussed in detail because they also have no similarities with the present invention.

Researched patent literature:

• DE-PS 902 893
• DE-PS 735 491
• DE-AS 1143 283
• DE-OS 3204119
• DE-OS 3126 824
• DE-OS 2442 717

• DE 10 2009 054 792 A1
• DE 20 2013 007 355 U1 (Extraction)
• DE 10 2014 108 553 B4
• DE GM 8103 514 Radiant heater
• DE OS 30 07 037 radiation heaters

• DE 33 38 766 A1
• DE 38 00 795 A1
• DE 103 39 421 A1
• DE 101 35 331 A1
• DE 202 08 884 U1
• EP 01 08 916 A2
• 6 89 04 444.4 (storage device, for electrical appliances, eg hot plates etc.)

Textually described patents in the description:

• DE 10 2014 108 553 B4
• DE 10 2016 007 920 A1
• DE 10 2009 054 792 A1
• DE 10 2009 000 838 A1
• DE 10 2009 000 838 B4
• EP 00 0001 570 930 A1
• DE 20 2007 000 766 U1
• DE 196 37 896 C1
• DE 3302 489 A1
• DE 193031

The present invention has the unutterable advantage over the induction technique used in many external warming equipment that no special induction vessels need to be used.

By not having a separate conventional heating element, e.g. with thick tube heating coils inserted into the panel, and with great insulation problems of a wooden kitchen worktop, but made entirely of a special compound or similar carrier materials, the advantages are that both in this hot plate and in the compressed ones Heating plates made of SMC plastic with a resistance heat insert in sandwich construction installation and a slight change of the heating element even in retrospect is still possible, and the insulation is much less complicated, or is not needed.

Likewise, the present invention was based, which is characterized according to claim 1, that in the kitchen worktop integrated Heizplattenelemente, without changing the basic concept of the kitchen worktop in terms of the built-in versions, to supplement another zone that is designed as a cold zone.

This is based on the reverse principle of a latent heat storage with PCM, which means that it is a phase change material (or similar) and is used for cooling the extra cold zone in the kitchen worktop.

Also, the object of the present invention was based, which is characterized according to claim 1, that a freely programmable microcontroller, which is placed and mounted isolated on the hot plate, depending on the needs of the performance of the warming zone controls individually.

It takes over the task of performance adjustment, which is adjusted as needed, i. when heating, the full power is provided, up to the set maximum setpoint temperature, then for holding the adjustable setpoint temperature, even over a longer period of time, the power is clocked, so that only the actual required power is provided to one as possible to achieve efficient energy saving. In addition to the control technology in the microcontroller, the use of a mechanical or digital timer is possible, which ends heating after a set time.

Using the RFID system or the new Smart Home technology, all data and the functional modes of the warming zone or cold zone are transferred to an electronic display, which is designed as an external small and mobile display module.

About this module, the hot plate is also fully on and off, as well as adjustable.

For the present invention, inevitably had already been known for several years RFID system, adapted to the requirements of the invention, so that use in a heating element of conductive special compounds, as well as multilayer SMC material or similar materials for a warming zone in a Kitchen worktop could be ensured.

In a further embodiment, which is characterized according to claim 1, characterized in that the possibility exists, a remote control by means of the new technology "Smart Home" in conjunction with the heating plates is possible.

In a further embodiment, which is characterized according to claim 1, characterized in that it is possible to operate the holding zone with the maximum power, it is essential that the safety aspect receives great attention, although inside the heating plates, a modified but self-regulating filament is integrated.

For this purpose, the maximum temperature of the heating zone is additionally monitored by a resettable temperature safety switch, which is compatible with the software and microcontroller. It can be reset via the mobile display module if the temperature exceeds approx. 4 ° C and, after lowering to the lowest setpoint, switches the holding zone back to active mode.

The corresponding information of the temperature safety switch, whether inactive or active, is automatically sent to the mobile display module.

Further, it should also provide innovative expansion options for the near future. Thus, some features have already flowed into the preliminary planning of the overall concept. In particular, the enormous energy efficiency of this system should be emphasized.

In order to be even more flexible in the applications, controls and conditions as well as in the calculatory side, a whole new thread has been developed, which has a PTC-like characteristic. The thus equipped heating element in the tray, requires no additional switching and controls more.

The internal heating element consisting of a special nonwoven as a carrier material, on the one hand has sufficient inherent stability around the applied refining Heizfilamente, (filament) during a pressing process or an injection process in the respective molds, holds in its applied position and on the other has very good penetration properties, so that no problems arise in the combination of individual layers of material (separation effect) of different materials for the heating plate and makes them useless.

The special embroidered heating filaments, which can be made variable in their performance as required by refinement. The heating filaments can thus be supplied with their own intelligence, resulting in a PTC characteristic or similar type), so that they measure their own temperature, control and thereby regulate themselves.

To achieve greater effectiveness or flexibility of the entire system, according to the invention, the resistance heating plate, which can be performed in a variety of forms, even completely filled conductive plastic, which also a PTC-like characteristic is achieved, it was also for cost reasons, the possible of injection molding technology considered as a manufacturing process into consideration. Another advantage is a slightly higher efficiency of this hot plate compared to the pressed SMC hotplates.

A significant contribution to the operating safety of the holding zone is achieved by providing them with temperature-resistant markings. The markings can be applied as delimiting rings on the surface of the holding zone. An anti-slip coating of temperature-resistant materials can also be applied to ensure better and safe positioning of pots or similar containers.

It is also planned to make the outer boundary of the warming zones with small LED light points identified.

Warming zones for kitchen worktops

Summary

In the course of the preliminary planning as features, the newly designed self-regulating filament also created a novel concept of heating plates for holding zones in kitchen worktops or other equipment.

Here, a variety of materials were used, such as, various decorative laminates, formica, various stone / granite slabs, etc. Where it is not necessary, as with conventional plates on the market to incorporate a complete cutout.

The advantages are obvious:
There is a perfectly flat surface. No additional external equipment is necessary anymore.

The principle is similar to that of the heated service tray from Az: DE 10 2014108 553 and from Az. 10 2016 007 920.7

A further embodiment and in addition further functional unit, without using the brand new self-adjustable filament, the use of a control and regulation in conjunction with a microcontroller and the associated software is possible.

Intelligent software in the microcontroller, which is placed and fastened on the heating plate in isolation, regulates the performance of the holding zone as required. He assumes the task of performance adjustment. As needed, the power is adjusted, i. when heating the full power is provided, while holding the target temperature, the power is clocked so that only the actual required power is provided so that the most efficient energy savings can be achieved.

This allows the built-in warming zone, in a kitchen worktop, between 0% and 100% of the maximum power control and regulate. An additional safety switch protects the holding zone from overheating.

If an adjustable maximum temperature is reached due to a fault, this safety switch immediately switches off the keep-warm zone. The temperature safety switch can be reset and, after lowering to the adjustable lower setpoint, switches the holding zone back to the active mode.

list of figures

• 1 shows a kitchen worktop ( 1 . 2 . 3 . 4 ) in the warming zones ( 6 . 7 . 8th ), which are designated below with WHZ, are incorporated from below ( 1 to 7 ), so that nevertheless a completely closed-flat surface remains and their possible arrangements in an overall view, with possible geometric shapes, the number, size, position and shape are of course freely selectable. The schematic LED light points ( 29 ) can be optionally provided as landmarks for the size and shape of the hot plate.
• 2 shows a variant of a kitchen worktop ( 1 . 2 . 3 . 4 ) in which the heating elements, from above for the WHZ (6,7,8) Although incorporated surface areas, but this does not form a closed surface of the plate, however, is fully waterproof incorporated.
• 3 shows a variant of a kitchen worktop ( 1 . 2 . 3 . 4 ) in which the heating elements, from below for the WHZ ( 6 . 7 . 8th ) are installed, so that a completely closed-flat surface remains. In the only other variant of the arrangement of WHZ ( 6 . 7 . 8th ) is shown. The schematic LED light points ( 29 ) can optionally be provided as landmarks for the size and shape of the hot plate.
• 4 shows the construction structure in cross-section, a kitchen worktop with a built-in bottom heating element ( 10 . 11 ) for a WHZ, wherein a completely closed-flat surface is present or remains. The heating element has direct contact, on the underside of a previously applied thicker decorative plate ( 2 ) on the body of a kitchen worktop ( 4 ), Has. In this version, preferably a heating element ( 10 ) for the 12 volt 48 Volt range used. The heating element in the 230 Volt version ( 11 ) can of course also be used. The heating element is combined with an insulation pot ( 13 ) in conjunction with a conclusion / receiving plate ( 15 ) with several clip springs ( 16 ) for fastening and fixing, as well as the required terminal ( 18 ), Power supply, connection cable ( 24 ), etc. and pre-assembled in the so-called blind hole, installed and attached. The isolation pot ( 13 ) is designed so that too fast an attack of the holding temperature is transferred beyond the actual warming zone to the edges of the kitchen worktop. The same heating and absorption principle is also applicable to a kitchen worktop made of granite or similar materials ( 2 . 3 . 4 ).
• 5 shows the construction structure in cross-section, a kitchen worktop with a built-in bottom heating element ( 10 . 11 ) for a WHZ, wherein a completely closed-flat surface is present or remains. The heating element ( 11 ) which in a SMC plate (SMC = Sheet Molding Compound) to a hot plate ( 12 ) and contact to the underside of a previously applied decorative plate ( 2 ) on the body of a kitchen worktop ( 4 ), Has. However, this version is preferably used for the 230 volt range. The heating element in the 12 Volt 48 Voltage version can of course also be used in a SMC network. In both cases, the heating element together with the insulation mat ( 14 ) in conjunction with a conclusion / receiving plate ( 15 ) with mounting brackets ( 17 ) for fastening and fixing, as well as all necessary terminals, power supplies, connecting cables, etc. preassembled and in the so-called blind hole, installed and attached. The same heating and absorption principle is also applicable to a kitchen worktop made of granite or similar materials ( 2 . 3 . 4 ). The fact that the heating plate is provided by its special construction and arrangement of the heating element within the composite together with an SMC compound or similar materials with an insulating outer edge strip (on the circumference), it is ensured that too fast attack the holding temperature on the actual Warming zone is transferred to the edges of the kitchen worktop.
• 6 shows the construction structure in cross-section, a kitchen worktop with a built-in bottom heating element ( 10 . 11 ) for a WHZ, wherein a completely closed-flat surface is present or remains. The heating element ( 10 . 11 ) has direct contact on the bottom surface of the so-called blind hole receptacle has. Again, the heating element ( 10 . 11 ) together with an isolation pot ( 13 ), which completely surrounds the heating element, in conjunction with a closing / receiving plate ( 15 ) with several clip springs ( 16 ) for fastening and fixing, as well as the required terminal ( 18 ), Power adapter ( 19 ), Connection cable ( 24 ), etc. and pre-mounted in the blind hole, installed and attached. Again, as with 4 that the isolation pot ( 13 ) is designed so that too fast an encroachment of the holding temperature is transferred beyond the actual warming zone out to the edges of the kitchen worktop.
• 7 also shows the construction structure in cross-section, a kitchen worktop ( 1 . 2 . 3 . 4 ) with a heating element incorporated from below ( 10 . 11 ) for a WHZ, wherein a completely closed-flat surface is present or remains. In this version, in a so-called blind hole recording a heating element ( 10 . 11 ) what in an SMC disk ( 12 ) is incorporated and direct contact, on the bottom surface of the so-called blind hole recording, has. The fact that the heating plate is provided by its special construction and arrangement of the heating element within the composite together with a SMC compound (SMC = Sheet Molding Compound) or similar materials with an insulating outer edge strip (on the circumference), it is ensured that a rapid attack the holding temperature is transferred beyond the actual warming zone addition to the edges of the kitchen worktop. In contrast to 6 The SMC hot plate is used together with an insulation mat ( 14 ), whereby the heating plate is thermally sealed down and in conjunction with a closing / receiving plate ( 15 ) with several mounting angles ( 17 ), as well as the required connection terminal ( 18 ), Power adapter ( 19 ), Connection cable ( 24 ), etc. and pre-mounted in the blind hole, installed and attached.
• 8th shows the construction structure in cross-section, a kitchen worktop ( 3 ) with a WHZ incorporated from above, from a ceramic glass plate or similar. Materials ( 21 . 22 ), wherein a perfectly flat surface is present or remains. The heating element ( 11 ) is on the underside of a ceramic glass plate ( 21 . 22 ) appropriate. The structural design of the heating element is designed so that a heating element has direct contact with the underside of the ceramic glass plate ( 21 . 22 ) and completely surrounded by an insulating plate and a border frame, which is made of specially thermal sealing material with adhesive additives and inside a metal core. The ceramic glass plate ( 21 . 22 ) is installed together with the heating element and the insulation mat in an incorporated from above recording of the countertop. In this embodiment, operation in the 12 volt to 48 volt range is not provided. For possible disassembly of the heating element and the glass plate ( 21 . 22 ) are incorporated to facilitate so-called ejection holes and arranged 3 × 120 ° offset.
• 9 shows the construction structure in cross-section, a kitchen worktop ( 3 ) with a WHZ incorporated from above, from a ceramic glass plate or similar. Materials ( 21 . 22 ), wherein a perfectly flat surface is present or remains. The heating element ( 10 . 11 ) is on the underside of a ceramic glass plate ( 21 . 22 ) appropriate. The structural design of the heating element is designed so that a heating element has direct contact with the underside of the ceramic glass plate ( 21 . 22 ) and completely surrounded by an insulating plate and a border frame, which is made of special thermal sealing material with adhesive additives and inside a metal core. Characterized in that a continuous recess for receiving the heating element / heating plate ( 10 . 11 . 12 ), a ceramic glass plate ( 21 . 22 ) with the border / sealing frame ( 20 ) are fixed from above exactly and Oberflächeneben, in which case the pre-assembled heating element is installed from below. Again, the heating element together with an insulation mat ( 14 ), which the heating element ( 10 . 11 ) in combination with a closure / mounting plate ( 15 ) with several clip springs ( 16 ) for fastening and fixing, as well as the required terminal ( 18 ), Power adapter ( 19 ), Connection cable ( 24 ), etc. and pre-mounted in the blind hole, installed and attached. Also in this version, an SMC hot plate with integrated heating element can be used and operated both in 12 Volt to 48 Volt and in the 230 Volt range.
• 10 shows the construction structure in cross-section, a kitchen worktop ( 1 . 2 . 4 ) with a WHZ incorporated from above, from a ceramic glass plate or similar. Materials ( 21 . 22 ), wherein a perfectly flat surface is present or remains. The heating element is on the underside of a ceramic glass plate ( 21 . 22 ) appropriate. The structural design of the heating element is designed so that a heating element / heating plate ( 10 . 11 . 12 ) has direct contact with the underside of the ceramic glass plate ( 21 . 22 ) and completely of an insulation mat with end plate and a border / sealing frame ( 20 ), which consists of special thermal sealing material with adhesive additives and inside a metal core, is enclosed.

LIST OF REFERENCE NUMBERS

1

normal coated kitchen countertop, wooden body, solid wood glued wood, etc.

2

kitchen worktop made with thicker coating (e.g., Resopal).

3

Granite kitchen worktop, otherwise natural stones, slate, ceramics, quartzite, marble etc.

4

Kitchen countertop made of materials such as MDF boards, laminate, (HPL)

5

conventional hob

6

Warming zone 1

7

Warming zone 2

8th

Warming zone 3

9

Control panel for warming zones

10

Heating element, 12 volts to 48 volts

11

Heating element, 230 volts

12

SMC heating plate, with integrated heating element inside

13

insulation pot

14

insulation mat

15

Statements / receiving plate

16

clamping spring

17

mounting brackets

18

terminal

19

Power supply, optionally 12 volts to 48 volts

20

Edging / sealing frame

21

Ceran glass plate, glass ceramic, quartz materials, stainless steel etc.

22

Granite, other natural stones, slate, ceramic plate, mineral materials etc.

23

Connection cable - 230 Volt

24

Connection cable - heating element

25

Connection cable, power supply connection terminal

26

Power supply cable - 230 volt connection

27

Removal holes

28

normal coating of a worktop

29

LED light points

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102014108553 [0010, 0016, 0064]
• DE 102014108553 B4 [0023, 0040]
• DE 102016007920 A1 [0024, 0040]
• DE 3302489 A1 [0025, 0040]
• DE 102014108553 A1 [0026, 0027]
• DE 102009054792 A1 [0028, 0040]
• DE 2007000766 U1 [0030]
• DE 102009000838 A1 [0033, 0040]
• DE 102009000838 B4 [0033, 0040]
• EP 000001570930 A1 [0035, 0040]
• DE 19637896 C1 [0036, 0040]
• DE 902893 [0040]
• DE 735491 [0040]
• DE 1143283 [0040]
• DE 3204119 [0040]
• DE 3126824 [0040]
• DE 2442717 [0040]
• DE 202013007355 U1 [0040]
• DE 3007037 [0040]
• DE 3338766 A1 [0040]
• DE 3800795 A1 [0040]
• DE 10339421 A1 [0040]
• DE 10135331 A1 [0040]
• DE 20208884 U1 [0040]
• EP 0108916 A2 [0040]
• DE 202007000766 U1 [0040]
• DE 193031 [0040]

Claims (12)

Keep warm zones in kitchen worktops Claim 1 , characterized in that the worktops, which consist of a variety of materials, no recesses partial sections, complete cutouts or other Einfalzungen own, and are executable in different geometric shapes are characterized in that the surfaces of the kitchen worktops completely surface-level and thus complete are closed. Keep warm zones in kitchen worktops Claim 1 , characterized in that the insertable resistance heating plates completely prefabricated, inserted into the elaborate from below recesses / troughs of kitchen worktops and with mounting springs which are mounted on the periphery of the end plate, and by a locking effect of the staple springs, the holder or attachment for the heating elements form. Keep warm zones in kitchen worktops Claim 1 , characterized in that the worktops are worked from below, and form the receptacle for the heating elements, it is true for the heating elements that they are designed to be interchangeable, even if the heating element also directly to the trough surface 4 and , 6 the kitchen worktop is applied. The heating elements are provided with an insulating outer edge strip (on the circumference), thereby ensuring that a too rapid attack of the holding temperature is transmitted beyond the actual warming zone addition to the edges of the kitchen worktop. This is also the isolation pot as in 4 and , 6 (13) shown. Keep warm zones in kitchen worktops Claim 1 , characterized in that they are made of a variety of materials such as plywood, coated MDF boards, solid wood, Formica, Formica-coated panels, and support materials, from any type of stone, marble u. Granite slabs, also stainless steel are designed and can be used. Keep warm zones in kitchen worktops Claim 1 , characterized in that the resistance heating elements also from special compounds, conductive plastic or other constructive structures, in conjunction with other different carrier materials, in the voltage ranges 12 volts - 48 volts, and in the 230 volt range, including in various power levels, use, Find. Depending on the version, these also have a PTC-like characteristic and can be controlled and controlled together with an RFID system or the new Smart Home technology. Also, all data and functional modes of the holding zone or cold zone are transmitted to an electronic display, which is designed as an external small and mobile display module. About this module, the hot plate is also fully on and off, as well as adjustable. Keep warm zones in kitchen worktops Claim 1 , characterized in that the worktops, special temperature-resistant coatings in the surface region of the warming zone, the colorless or in the shades of the kitchen worktop, as an optical surface for pots and other vessels, can be mounted on or. Keep warm zones in kitchen worktops Claim 1 , characterized in that the special construction and arrangement of the heating elements or heating plates with their enclosing insulation 4 and , 6 (13) Prevents too fast heat transfer can be done on the body of the kitchen worktop beyond the actual warming zone addition. The same applies to the variants after 5 and , 7 , here already the lateral insulation effect is in the plate construction. Keep warm zones in kitchen worktops Claim 1 , characterized in that a cooling zone (storage shelf) in the kitchen countertops, 1 to 3 according to the reverse principle of a latent heat storage with PCM (English phase change material), so-called phase change material, by a insertable from below plate, is used and installed. The power supply is designed for mains operation with 230 volts as well as optionally for the range from 12 to 48 volts. Keep warm zones in kitchen worktops Claim 1 , characterized in that the operating safety of the warming zones, these provided with temperature-resistant markings indicate the current operating state by means of heat film. The markings can be applied as delimiting rings on the surface of the holding zone. It is also envisaged to identify the outer boundary of the holding zones with small LED light spots, which of course are also surface-level and watertight. Keep warm zones in kitchen worktops Claim 1 , characterized in that an anti-slip coating can be applied from also temperature-resistant materials, to ensure a better and safe positioning of pots or similar vessels. To display or manually control the current operating mode, a touchpad is optionally placed near a deck boundary, from a warming zone 1 (9) placed. For safety reasons, a two-button operation is provided for switching on the warming zones and also required. Keep warm zones in kitchen worktops Claim 1 , characterized in that in the region of the holding zones of kitchen worktops or similar equipment, insertable resistance heating plates, (from DE 10 2014 108 553 and Az. 10 2016 007 920.7 to which also incorporated herein by reference) and in various assemblies, and equipment can be integrated and exchanged, find use. Heating outputs and temperature control, temperature measurement, keep warm time, etc., are by a PTC-like characteristic in the actual heating element or in an inner of a hot plate, made of various materials, rule and controllable. Keep warm zones in kitchen worktops Claim 1 , characterized in that the insertable resistance heating plates in the from below, in the incorporated wells, in which the heating plates are integrated, all possibly necessary additional components such as transformers, controllers, microcontrollers, etc. are mounted without obstructing other open spaces. Another embodiment 8th to 10 shows that the variants are also provided with an installation from above, but still guarantees the surface flatness.

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