Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
  • F24C15/00—Details
  • F24C15/10—Tops, e.g. hot plates; Rings
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
  • F24C15/00—Details
  • F24C15/10—Tops, e.g. hot plates; Rings
  • F24C15/102—Tops, e.g. hot plates; Rings electrically heated
  • F24C15/103—Tops, e.g. hot plates; Rings electrically heated being movable or rotatable
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
  • F24C15/00—Details
  • F24C15/10—Tops, e.g. hot plates; Rings
  • F24C15/108—Mounting of hot plate on worktop
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
  • F24C15/00—Details
  • F24C15/30—Arrangements for mounting stoves or ranges in particular locations

Definitions

• the present invention relates to a modular hob according to the preamble of claim 1.
• hob will refer to a household appliance having one or more cooking devices, such as a gas cooker, an electric heating plate and the like.
• a need is increasingly felt for providing hobs which can be adapted in a customized manner to different requirements, so as to allow a user to arrange a hob that is as versatile as possible; to this end, hobs have been conceived which include different types of cooking devices.
• hobs that include both gas burners and electric plates, as well as hobs fitted with electric cooking devices only (plates, oven, etc.) or with gas cooking devices only.
• the various modules are laid onto a kitchen top, and each of them is powered or fed separately by the household electric or gas system through a dedicated supply line; by assembling together a certain number of modules a customized hob is thus obtained which meets the requirements of a single user, who may then at any time change the composition of the hob as desired.
• each module is powered or fed independently of the other ones through a respective branch of the main supply line; therefore, branching points must be provided in the gas main pipe and in the electric network.
• Modern kitchens also require an optimization of the spaces occupied by the various appliances.
• the branch of the supply line afferent to a module will stay in place even after the module has been removed, so that it must be made safe in order to prevent any accidents from occurring, besides taking up useful space.
• the present invention aims at solving these and other problems suffered by the modular hobs known in the art.
• the present invention is based on the idea of providing a modular hob wherein each module comprises one cooking device (like a gas burner, an electric element or the like) and wherein every single module can be pivoted about a common horizontal axis, hereby attaining the advantage of freeing up the surface on which the modules are laid when not in use.
• modules are all supplied by a single connection to the gas or electric mains, so that it is not necessary to provide a branch thereof for each module.
• the modules' supply line is modular as well, and extends together with the modules themselves, in particular within them, so that every single module is powered or fed by the preceding one (regardless of whether the latter is operating or not).
• Fig. 1 shows a hob consisting of a plurality of modules according to the present invention
• Fig. 2 shows the hob of Fig. 1 with one module turned up
• Fig. 3 is a perspective view from the front side of one module of Fig. 1
• Fig. 4 is a perspective view from the rear side of the module of Fig. 3
• Fig. 5 is a sectional view of the module of Fig. 4;
• Fig. 6 is a perspective view of the rear portion of the module of Fig. 4, without the body thereof;
• Fig. 7 is a perspective front view of Fig. 6;
• Figs. 8 and 9 are two perspective views of Figs. 6 and 7;
• Fig. 10 is a perspective view of the gas pipe connection terminal
• Fig. 11 is a perspective view of the bracket that supports the module body
• Fig. 12 is an electric connection diagram relating to the modules of Fig. 1;
• Fig. 13 is a gas feed line connection diagram relating to the modules of Fig. 1;
• Fig. 14 is a top view of a detail of the gas burner;
• Fig. 15 is a perspective view of the detail of Fig. 14;
• Fig. 16 shows a bracket variant
• a modular hob 1 according to the present invention. It is made up by three modules 2, 3 and 4 joined together and laid on a common top 5 of a kitchen cabinet; the hob also comprises a control unit 40, which will be described later on.
• Each module 2,3,4 comprises a pivoting body 2A,3A,4A on which a respective cooking device is positioned, e.g. modules 2 and 4 comprise an electric heating plate 9B, whereas module 3 comprises a gas burner 9A.
• Each module 2,3,4 further comprises a rear bracket 2B,3B,4B removably (or irremovably) secured to kitchen top 5, about which the body can rotate.
• each module is fed with a combustible fluid, e.g. gas, and receives electric power from an electric line.
• a combustible fluid e.g. gas
• the combustible fluid may either be only delivered to the next module or be used by the heating element of the module in question.
• modules 2,3,4 can be pivoted about a horizontal axis between an operating condition in which the module body is laid on the kitchen top and a so-called "idle" condition in which the module body is separated from the kitchen top, like module 4 in Fig. 2; more in particular, modules 2,3,4 are each fitted with a bracket 2B, 3B, 4B about which module body 2A,3A,4A can rotate, so that the latter can be put in the operating condition or in the idle condition; in order to facilitate gripping of the body for turning it, the body is equipped with a front handle 3 C, clearly visible on module 3 of Fig. 3; in order to prevent the handle from protruding from the outline of the body 3 A, the handle may be provided in the form of a groove in the body, as shown in the annexed drawings.
• the module occupies an extremely small space on top 5, hence leaving it available for other functions (e.g. it can be used as a worktop or as a support to lay objects on); the body is closed at the bottom (on the side opposite to the one the houses the cooking device), save for a technical access opening intended for maintenance (not shown).
• bracket 3B as shown in the embodiment of Figs. 4, 6 and 12 , is U-shaped and is fitted with a support base 31 from which two coupling arms 32 and 33 jut out perpendicularly and embrace gas pipe 13, thus letting the latter turn into rotation seats 32A,33A provided on each arm.
• body 3 A comprises at the rear a semi-tubular protection portion 3D which extends behind body 3 A and surrounds gas pipe 13 in order to protect it from accidental shocks.
• bracket 3B it may rest on the kitchen top; in this case, in order to prevent the bracket from being moved by the rotating module, the bracket is made of a metal material having a high specific weight, e.g. cast iron or stainless steel (so that the bracket is very heavy and preferably heavier than the module), or it is fitted with suitable counterweights (not shown) which may be incorporated into the bracket itself; according to a first alternative, the brackets are secured to the top by means of screws, or a magnet is attached to the bracket underside (or to the kitchen top, if the bracket is made of a material which, like iron or steel, is attracted by a magnet) in order to obtain a magnetic fixing without having to make holes in the top. Further alternative solutions will be described hereafter.
• a metal material having a high specific weight e.g. cast iron or stainless steel (so that the bracket is very heavy and preferably heavier than the module), or it is fitted with suitable counterweights (not shown) which may be incorporated into the bracket itself; according to a first alternative, the
• the rotation of the module may be subjected to calibrated braking, to prevent the movable part of the module from falling accidentally; for the same purpose, a system is also provided for retaining the movable part of the module in the upturned position.
• the actual module supply line starts from a control unit 40 connected to the (electric or gas) mains.
• the modules can be installed downstream of said control unit in any order; the module arrangement shown in Fig. 1 is therefore merely indicative.
• Fig. 12 there is shown the electric power supply diagram (for clarity, the modules are outlined by means of a dashed line): the electric network, schematized by two mains wires 50 and 51, is connected to control unit 40, which may comprise a power supply adapted to reduce the mains voltage and transform it from alternating current into direct current; in other embodiments the power supply may be omitted, so that the modules receive current having the same voltage and frequency as electric network 50,51.
• the actual power line that supplies electric energy to the modules extends downstream of control unit 40: as aforesaid, the electric power line is modular, and in this case consists of three sections (matching the number of modules): a first section 52,53 (for first module 4), a second section 57,58 (for second module 3), and a third section 62,63 (for third module
• control unit 40 is connected to bracket 4B of first module 4 of hob 1, within which from the first power line section consisting of main electric connectors 52 and 53 a branch starts which consists of branching connectors 54 and 55 that supply power to electric load 56 of the cooking device of module 4, which in this case is the electric resistor of electric plate 9B.
• Main electric connectors 52 and 53 then run along the entire bracket 4B and connect (through common electric connections known in the art) to the second section consisting of main electric connectors 57 and 58 running within bracket 3B, from which a branch starts which consists of branching connectors 59 and 60 that supply power to electric load 61 of the cooking device of module 3, which in this case is the piezoelectric device that produces the spark for lighting up gas cooker 9A.
• main connectors 57 and 58 are electrically connected to main connectors 62 and 63 (third section) running within bracket 2B, from which branching connectors 64 and 65 supply power to load 66 of electric plate 9B of module 2; the main electric connectors terminate at the free end of bracket 2B, so that they can possibly be connected to the connectors of an additional module.
• branching connectors 64 and 65 supply power to load 66 of electric plate 9B of module 2; the main electric connectors terminate at the free end of bracket 2B, so that they can possibly be connected to the connectors of an additional module.
• each module is powered independently of the operation of the preceding module: in fact, in the illustrated example it is apparent that an idle module 4 will not affect the operation of modules 2 and 3.
• the power line can be viewed as a modular power line to which the modules' electric loads are connected in parallel.
• the power line runs within modules' brackets 2B,3B,4B and is therefore fixed with respect to the modules' bodies, thus offering an advantage in terms of construction simplicity: when the module is turned, the electric power line will not rotate, as shown by way of example in Fig. 11, wherein dashed lines designate main conductors 57, 58 running within bracket 3 B and branching conductors 59 and 60 connected to the load (not shown in Fig. 11).
• the electric connections among the various modules and between each module and the control unit are provided through an automatic coupling actuated by the same movement required for coupling the connection of the combustible fluid feed line.
• the gas feed line follows the same construction philosophy, i.e.
• gas main pipe 70 is connected to control unit 40, which comprises a safety valve adapted to stop the gas feed to all modules at once.
• the actual gas feed line extends downstream of control unit 40: the first section consists of main gas pipe 14, which can rotate relative to bracket 4B of first module 4.
• the cooking device of module 4 is an electric plate, and therefore it does not require to be fed with gas; hence pipe 14 has no branches and is coupled to main pipe 13 of module 3 through a safety coupling 17, thus extending the gas feed line.
• Module 3 is equipped with a gas burner, which is suitably fed by branching pipe 16 afferent to main pipe 13, i.e. the second feed line section, as shown in greater detail in
• Main pipe 13 is then connected through a safety coupling 18 to the third section consisting of the main pipe 12 of module 2, which is also equipped with an electric plate and therefore has no branching pipe.
• Main pipe 12 ends with a safety coupling 19 to which an additional module may be connected, as mentioned above; safety couplings 17, 18 and 19 will be dealt with in more detail later on.
• every module 2,3,4 comprises at least one gas feed line section and that, if a gas burner has been installed on the module, then the latter will also comprise a branching line for feeding said gas burner.
• the various gas feed line sections 12,13,14 can rotate relative to one another, as aforementioned, integrally with the respective module's body; to this end, they can turn in rotation seats 32A,33A provided in coupling arms 32 and 33 of bracket 3B.
• each safety coupling comprises a male coupling terminal 8 and a female coupling terminal 7, which are also visible in Fig. 3.
• a safety collar 81 Around the male coupling terminal there is a safety collar 81, shown in Figs. 6 to 10, which, when the modules are coupled together, engages into matching coupling seat 71 provided on the arm of the bracket of the adjacent module.
• gas burner 9 A of module 3 there is shown a particularly advantageous embodiment of gas burner 9 A of module 3: in fact, tests carried out have shown that, thanks to its technical features, and in particular to its compactness, the gas burner type which is most suitable for use on hob 1 according to the present invention is a gas burner complying with the teachings of patent application WO2007036772 by the present Applicant, i.e. a burner comprising a semi-permeable element acting as a flame divider, such as a flame divider 77 made from a microperforated sheet (which is permeable to gaseous substances, but not to liquid ones), as shown in Figs. 5, 14 and 15; reference should therefore be made to said patent application for the detailed specifications of said burner 9 A.
• a gas burner complying with the teachings of patent application WO2007036772 by the present Applicant, i.e. a burner comprising a semi-permeable element acting as a flame divider, such as a flame divider 77 made from a
• a further advantageous feature is the special pot support 90: it has simple cross-like shape, the two bars of which intersect at the centre of flame divider 77, and is characterized in that it may either be made up of just two parts (the two bars of the cross) joined at the centre, or be manufactured as one piece.
• peripheral portion 9OA is thicker than central portion 9OB.
• the taper minimizes the contact area between the pot support grate and the burner flame, thus preventing any combustion problems.
• peripheral portion 9OA of support 90 extends in the end portions of each bar of the cross outside the area of flame divider 77, whereas thicker portion 9OB is above flame divider 77 (when the support is S-
• support 90 is formed by two U-shaped bars intersecting at the centre and having the same length, thus forming a cross, each comprising two portions 9OA and 9OB having a different thickness and joined by a variable-thickness section 9OC, wherein thicker portion 9OA and variable-thickness junction 9OC are outside the burner flame area, whereas the thinner portion is above flame divider 77.
• Support 90 may be secured to the module body in a removable manner, e.g. through a plug- in coupling, so that it can be removed easily (e.g. for cleaning purposes) and to prevent it from coming off from the body when the latter is turned up to the idle position.
• This type of support is especially advantageous when used in conjunction with hob 1 because of its extreme lightness, which limits the weight of the pivoting module body.
• base 31A has detachable arms 32A, thus making it easier to carry out installation and maintenance work on the electric or gas lines, hi this extremely advantageous variant, base 31A does not rest on kitchen top 5, being instead secured to a vertical wall behind the modules: in this case, base 3 IA is secured to the vertical wall (e.g. by means of screws) and coupling arms 32A are secured to said base by means of removable connections, which in the illustrated embodiment consist of a widened-head pin
• this solution in which the arms can be detached from the base may also be employed in conjunction with a plate laid on or secured to the kitchen top.
• Said pot support 90 is thus very stable, regardless of the pot diameter, and does not hinder the secondary air supply to the burner; therefore, it is applicable to any type of hob.
• the modules can be controlled remotely.
• each module comprises a local control unit adapted to receive control signals sent by a user through a remote control, as well as to emit a signal towards the latter: in fact, it is particularly advantageous that the user does not have to specify on the remote control the module to which a control signal is to be directed, because the remote control always acts upon the closest module in the operating position.
• each module is equipped with a position sensor that turns off the control unit when the module is in the idle condition, and with a transceiver capable of receiving and transmitting radio signals.
• the procedure is as follows: the user presses a remote control key corresponding to a request for raising or lowering the flame (or the radiant power, in the case of an electric plate) of the burner which is closest to the remote control.
• the remote control sends a polling signal to which all the modules in the operating position respond with a corresponding response signal.
• the response signal is specific for each module, so that the remote control can identify the signals received from the various modules; for example, it may for this purpose contain a module identifier (e.g. a unique numerical code set at the factory or obtained automatically at installation time) or it may be encoded by using a module-specific encoding.
• the remote control measures the strength of the single response signals received and compares the obtained values with one another to find which module is closest, i.e. the one that emits the strongest signal.
• the remote control can send a dedicated actuation signal for the closest module.
• a dedicated actuation signal will therefore contain the module identifier or will be encoded in the module's specific encoding. In this manner, only the closest module will respond to the actuation signal by raising the flame of the burner (or the radiant power of the electric plate).
• a solution which is less advantageous in terms of energy consumption provides that the modules in the operating condition continuously emit a position signal
• the initial polling step can thus be omitted (the remote control must send a polling signal and wait for a response signal), and the remote control can directly send the actuation signal to the module whose position signal is strongest.
• control unit 40 communicates with the modules, e.g. through waves carried over the electric power line, in order to establish which modules can be activated, then it receives a signal from the remote control (on which an activation request command for a specific module has been set), and finally actuates the corresponding module, if the latter is in the operating condition.
• gas branching pipe 16 afferent to the burner is flexible (e.g. a corrugated hose or the like): in such a case, gas pipe 13 can be fixed and integral with bracket 3B 3 representing the pivot around which the module body rotates.
• protection portion 3D can turn about gas pipe 13, so as to guide body 3A as the latter is being moved between the operating and idle positions, while corrugated hose 16 bends and allows the module to switch between the operating and idle positions.
• the electric power line is secured to the gas pipe instead of running within the bracket, so that it can be moved together with the gas pipe; in this case it will be appropriate to use sliding-type electric contacts (adapted to retain the electric connection between two conductors even in the presence of relative motion therebetween), for the purpose of preserving the electric continuity between the main power line and all the branches thereof.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Feeding And Controlling Fuel (AREA)
• Electric Stoves And Ranges (AREA)
• Baking, Grill, Roasting (AREA)
• Combinations Of Kitchen Furniture (AREA)
• Coupling Device And Connection With Printed Circuit (AREA)
• Insulated Conductors (AREA)
• Cookers (AREA)

Priority Applications (3)

Applications Claiming Priority (2)

Publications (2)

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Cited By (4)

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Citations (5)

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• 2008
  • 2008-04-16 IT IT000299A patent/ITTO20080299A1/it unknown
• 2009
  • 2009-04-14 US US12/736,542 patent/US20110100352A1/en not_active Abandoned
  • 2009-04-14 EP EP09732173A patent/EP2294338A2/en not_active Withdrawn
  • 2009-04-14 RU RU2010146460/03A patent/RU2513940C2/ru not_active IP Right Cessation
  • 2009-04-14 WO PCT/IB2009/005228 patent/WO2009127935A2/en active Application Filing

Patent Citations (5)

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