EP3077730A1

EP3077730A1 - Gas cooking appliance

Info

Publication number: EP3077730A1
Application number: EP14815052.7A
Authority: EP
Inventors: Paulo Marcos Andrade Soares; Alejandro Cabarga Herrera; Oscar Peña Martín
Original assignee: BSH Hausgeraete GmbH
Current assignee: BSH Hausgeraete GmbH
Priority date: 2013-12-04
Filing date: 2014-11-25
Publication date: 2016-10-12
Anticipated expiration: 2034-11-25
Also published as: WO2015083038A1; ES2537272B1; EP3077730B1; ES2537272A1; PL3077730T3

Abstract

The invention relates to a gas cooking appliance (10), particularly a gas stove device, which comprises at least one spindle shaft (12) mounted so as to rotate and/or be axially displaceable between at least two end positions, and at least one magnet (14) provided to actuate at least one magnetically-actuatable switching element (16). When in an assembled state, said at least one magnet (14) is secured to the at least one spindle shaft (12) at least in the axial direction (18) of said at least one spindle shaft (12), and is provided to actuate said at least one switching element (16) when in at least one of the at least two end positions of said at least one spindle shaft (12).

Description

Gasgarvorrichtung

The invention relates to a Gasgarvorrichtung according to the preamble of claim 1.

From WO 2008/005127 A2 a Gasgarvorrichtung is already known, which has a spindle shaft which is rotatably mounted. In addition, the Gasgarvorrichtung includes a control knob which is rotatably supported by the spindle shaft. The control knob is coupled to a magnet which is moved during a rotational movement of the control knob on a surface of a magnetically actuated switching element. Trained as a reed switch switching element changes depending on a movement of the magnet its switching state.

The object of the invention is in particular to provide a generic device with an advantageous construction. The object is achieved by the features of claim 1, while advantageous embodiments and modifications of the invention can be taken from the dependent claims. The invention is based on a Gasgarvorrichtung, in particular a

Gas cooking device, with at least one spindle shaft, which is rotatably mounted and / or axially displaceable between at least two end positions, and with at least one magnet which is provided, at least one magnetically actuated

To operate switching element. It is proposed that the at least one magnet in a mounted state at least in the axial direction of the at least one spindle shaft fixed in particular fixed to the at least one spindle shaft and is intended to actuate the at least one switching element in at least one of the at least two end positions of the at least one spindle shaft , A "gas cooking device" should be understood as meaning, in particular, at least one part, in particular a subassembly, of a gas cooking device, in particular a gas hob

Element, which is intended to be understood in at least one

Operating state, a movement of at least a first element, in particular at least one control knob, which is fastened in particular in an assembled state on the at least one spindle shaft, preferably by a material and / or positive and / or adhesion, at least one further element, in particular to the at least one magnet to transmit. A "magnet" should be understood to mean, in particular, an element which, in at least one operating state, becomes one

Generation of a magnetic field is provided. Various embodiments of the at least one magnet which appear expedient to a person skilled in the art are conceivable.

For example, the at least one magnet could comprise at least one electrically conductive material, which in particular flows through electrical current in the at least one operating state and advantageously generates a magnetic field as a function of the electric current. However, the at least one magnet preferably has at least one ferromagnetic and / or ferrimagnetic material. Particularly advantageously, the at least one magnet is designed as a permanent magnet. By the phrase that the at least one magnet is intended to "actuate" the at least one magnetically actuable switching element, it should be understood in particular that the at least one magnet is intended to change a switching state of the at least one magnetically actuable switching element, in particular by at least one magnet is preferably coupled in the axial direction to a movement of the at least one spindle shaft, wherein an axial

Displacement of the at least one spindle shaft in particular a movement of the at least one magnet in the axial direction has the consequence, which is preferably at least proportionally and particularly preferably identical to the displacement of the at least one spindle shaft. In this case, the at least one magnet could in particular be rotatably mounted relative to the at least one spindle shaft. Alternatively, it is conceivable that the at least one magnet is arranged at least essentially, in particular completely, immovably relative to the at least one spindle shaft. A "switching element" is to be understood in particular to mean an element which is intended to produce and / or to separate an electrically conductive connection between at least two points, in particular contact points of the switching element at least one control signal, which is advantageously generated by the at least one magnet, to change at least one switching state, in particular to switch between the at least two contact points provided to switch reversibly between at least two switching states. Advantageously, a switching operation of the at least one switching element reversible, advantageously as often executable, in particular repeatable. A "magnetically actuable" switching element should be understood as meaning, in particular, a switching element which is intended to change the switching state as a function of at least one magnetic parameter. An "axial direction" of the at least one spindle shaft is to be understood in particular to mean a direction which is aligned at least substantially parallel to a longitudinal extension direction of the at least one spindle shaft. A "longitudinal extension direction" of the at least one spindle shaft is to be understood in particular as meaning a direction parallel to a longest side of a smallest imaginary cuboid just enclosing at least one spindle shaft be understood. The fact that an object is intended for a specific function should in particular mean that the object fulfills and / or executes this specific function in at least one application and / or operating state.

Due to the embodiment of the invention, a generic device can be provided with an advantageous construction. In particular, a compact design can be achieved. In addition, advantageously, a stable and / or durable design can be achieved. Particularly advantageously, a switching operation can be caused and / or triggered by a mechanical movement, in particular by displacement in the axial direction, of the at least one spindle shaft.

It is also proposed that the Gasgarvorrichtung comprises at least one magnetically actuated switching element, which in particular a high degree of flexibility can be achieved. In addition, advantageously by varying a magnetic field strength of the at least one magnet, in particular in a production, the Gasgarvorrichtung can be flexibly adapted to different needs. In addition, in particular mechanical tolerances can be compensated. There are various, a skilled person appear reasonable embodiments of at least one magnetically actuated switching element conceivable. For example, the at least one switching element could have at least one Hall sensor.

However, the at least one switching element preferably has at least one reed switch. A "reed switch" is to be understood in particular a switching element having at least one, in particular elongated and preferably magnetically actuable switching tongue, which is intended to be an electrically conductive contact with at least one further switching part, in particular another, in particular elongated and preferably In particular, the at least one switching element additionally comprises at least one container in which the at least one switching tongue and in particular the at least one further switching part are arranged in a hermetically sealed state in an assembled state, thereby enabling a compact and / or space-saving design can be achieved

temperature resistant and / or fast responding switching element can be achieved.

It is also proposed that the at least one magnet is provided to switch the at least one switching element contactless, in particular while avoiding contact between a surface of the at least one magnet and a surface of the at least one switching element. The at least one magnet and the at least one switching element are advantageously arranged independently of one another by a distance of at least 0.2 mm, in particular of at least 0.5 mm, advantageously of at least 0.7 mm and preferably of at least 1 mm. As a result, in particular a high degree of flexibility and / or high operational reliability can be achieved. It is also proposed that the at least one magnet is provided for actuating the at least one switching element preferably in the axial direction by a distance of not more than 3 mm, in particular not more than 2.5 mm, advantageously not more than 2 mm and preferably not more than 1 mm to be moved, in particular relative to the at least one switching element. An "actuation" of the at least one switching element is to be understood in particular as switching of the at least one switching element induced from the outside, advantageously by the magnet, which in particular allows a small space requirement to be achieved. For example, when viewed in a plan view, the at least one magnet could in particular exclusively comprise an overlap region of the at least one

Switching tongue and the at least one further switching part of the at least one

Cover switching element, wherein in the overlap region advantageous the

Switching operation of the at least one switching element takes place. In particular conceals and / or veiled, preferably covers the at least one magnet, in particular in an assembled state, the at least one switching element, however, when viewed in a plan view, at least substantially. By the phrase that the at least one magnet "at least substantially covers" the at least one switching element when viewed in a top view, it should be understood in particular that the at least one magnet has a proportion of at least 80 when viewed in the top view and in the mounted state %, in particular of at least 90%, and advantageously of at least 98%, of a surface of the at least one switching element facing the at least one magnet, thereby making it possible in particular to achieve a reliable and / or functional gas cooking device.

Furthermore, it is proposed that the Gasgarvorrichtung comprises at least one control knob, which is provided in particular in at least one operating state to a movement of the at least one spindle shaft at least in the axial direction. A "control knob" should in particular be understood to mean an element which is provided to receive an input quantity from an operator during an operating procedure and in particular to be contacted directly by an operator, a touch of the operating knob being detected and / or a force being exerted on the control knob

Actuating force detected and / or mechanically to actuate a unit

is forwarded. This can be achieved in particular a high level of comfort for an operator.

It is also proposed that the gas cooking device comprises at least one ignition unit, which is provided, upon actuation of the at least one

Switching element to ignite at least one gas flame. In this case, the ignition unit can in particular at least partially in a control and / or regulating unit of a

Gasgargeräts be integrated. This can in particular a functional

Design and / or a high level of comfort for an operator can be achieved. Advantageous may have a short reaction time between an actuation of the at least one

Control knob and ignition of the gas flame can be achieved.

Further advantages emerge from the following description of the drawing. In the

Drawing is an embodiment of the invention shown. The drawing, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations.

Show it:

1 is a Gasgargerät with a Gasgarvorrichtung invention in a schematic plan view,

Fig. 2, the Gasgarvorrichtung of FIG. 1 in a first operating position in a schematic sectional view along the line II-II, wherein a

Control knob is not shown,

Fig. 3, the Gasgarvorrichtung of FIG. 2 in a second operating position in a schematic sectional view and

Fig. 4 is a switching element of the Gasgarvorrichtung of FIG. 1 in a

Individual representation.

Fig. 1 shows a Gasgargerät 24, which is designed as a gas hob, with a

Gas cooking device 10, which is designed as a gas cooking device. As an alternative to a design as a gas hob, it is conceivable that the gas cooking appliance is designed as a gas grill and / or gas cooker, in particular as a gas camping cooker. Also conceivable are further embodiments of the gas cooking appliance that appear appropriate to a person skilled in the art. The Gasgarvorrichtung 10 includes a burner 26, which is for generating a

Gas flame is provided. To a set up of cookware includes the

Gasgarvorrichtung 10 a pot carrier 28. The pot carrier 28 surrounds the burner 26 when viewed in a plan view substantially, the burner 26 is disposed substantially at a center of the pot carrier 28. The Gasgarvorrichtung 10 comprises a base body 30, on which the pot carrier 28 is arranged in an assembled state.

For an operation of the burner 26, the gas cooking device 10 comprises a

Control knob 20 and a spindle shaft 12 to which the control knob 20 is attached (see Fig. 2). The spindle shaft 12 pierces the base body 30. The control knob 20 is provided for movement of the spindle shaft 12 and fixed in the mounted state on the spindle shaft 12. For attachment of the control knob 20, the spindle shaft 12 has a mounting portion 32. In the assembled state of the control knob 20 is positively and / or non-positively attached to the spindle shaft 12. For example, the control knob by means of a clamping connection on the

Be fixed spindle shaft. Alternatively or additionally, the control knob could be attached by means of an adhesive connection to the spindle shaft. Also conceivable is a latching connection and / or a clip connection and / or a lock. Alternatively, further compounds that appear appropriate to a person skilled in the art are conceivable.

The control knob 20 and the spindle shaft 12, the rotatable and between two

End positions is mounted axially displaceable, are immovably fixed relative to each other. In a starting position, the spindle shaft 12 is arranged in a first of the end positions. Upon movement of the spindle shaft 12 in the axial direction 18 - for example, by operating the control knob 20 by an operator - the spindle shaft 12 is moved in the axial direction 18 in a second of the end positions. A distance by which the spindle shaft 12 is movable in the axial direction 18 is limited by a spring of a mechanical valve (not shown). This also defines a distance between the two end positions. The control knob 20 is provided for rotation of the spindle shaft 12 about a rotation axis 34 of the spindle shaft 12. The rotation axis 34 is substantially in

Axial direction 18 of the spindle shaft 12 aligned. By rotation of the spindle shaft 12, the control knob 20 is provided for setting a heating stage. Depending on a set heating level, a gas flow supplied to the burner 26 is regulated to generate the gas flame. This could be done, for example, electrically, for example by means of a control unit that regulates a passage of an electric valve. In the present embodiment, the gas flow is controlled by the mechanical valve. In an alternative embodiment, it is conceivable that the

Gasgarvorrichtung has two control knob and two spindle shafts, wherein a first of the control knob attached to a rotatably mounted first of the spindle shafts and a second of the control knob could be attached to an axially displaceable between two end positions mounted second of the spindle shafts. The control knob 20 is provided for an input of an ignition request, depending on which an ignition of the gas flame generated by the burner 26 takes place. For this purpose, the control knob 20 to a movement of the spindle shaft 12 in

Axial direction 18 is provided. For detection of the ignition request, the gas cooking device 10 comprises a magnetically operable switching element 16, a magnet 14 provided to actuate the magnetically actuable switching element 16, and an igniting unit 22. In the assembled state, the magnet 14 is in the axial direction 18 of the spindle shaft 12 attached to the spindle shaft 12. The magnet 14 is fixed in the assembled state positively and / or non-positively to the spindle shaft 12. In this case, the magnet 14 is fastened to the spindle shaft 12 by means of a clamping connection.

Alternatively or additionally, it is conceivable that at least one projection is provided on the spindle shaft in order to secure a position of the magnet relative to the spindle shaft. Also conceivable is a latching connection and / or a clip connection and / or a connection made by means of a lock. Alternatively, there are more, one

Professional conceivable connections appear reasonable.

The Gasgarvorrichtung 10 includes an electronic circuit board 36, on which in the mounted state, the switching element 16 is arranged. In the present embodiment, the switching element 16 is soldered to the electronic circuit board 36. Here is one

Longitudinal extent of the switching element 16 is aligned substantially parallel to a surface of the electronic circuit board 36. In the mounted state, the switching element 16 protrudes with respect to the axial direction 18 by a maximum of 2 mm over a surface of the

Electronics board 36 addition. The switching element 16 is formed temperature resistant. Here, the switching element 16 is up to temperatures of at least 125 ° C in a functional state. The switching element 16 has a reed switch, which is designed as a "normally-open" switch (see Fig. 4). Here, a commercially available reed switch is used, which has a temperature resistance of at least 125 ° C. Das Switching element 16 has two elongated switching tongues 38, which are arranged overlapping and spaced apart in an initial position of switching element 16 in axial direction 18. Moreover, switching element 16 has a container 40 in which the switching tongues 38 are arranged airtight.

The gas cooking device 10 comprises a supply unit 42 (see Figures 2 and 3). The supply unit 42 is as a voltage source, in particular as a DC voltage source, educated. The supply unit 42 acts on the switching element 16 with a voltage. Here, the supply unit 42 and a first of the switching tabs 38 are electrically connected together. A second of the switching tabs 38 is connected to the

Ignition unit 22 connected. It is conceivable that between the second

Switching and the ignition unit one or more matching components, such as filters and / or amplifiers are arranged. Alternatively, the

Adaptation components integrated in the ignition unit.

The electronic circuit board 36 has a recess through which the spindle shaft 12 engages in the mounted state (compare FIGS. 2 and 3). On a first side, namely an upper side, the electronic board 36 is in the mounted state

Switching element 16 attached. On a second, the switching element 16 side facing away, namely a bottom, the electronic circuit board 36 is arranged in the assembled state, the valve. The spindle shaft 12 extends, starting from the first side, through the recess to the second side. There, the spindle shaft 12 is supported in the mounted state on the valve, namely on the spring of the valve from.

In the mounted state, the magnet 14 on the first side of the electronic board 36 is fixed to the spindle shaft 12. In this case, the switching element 16 is arranged in the axial direction 18 between the magnet 14 and the electronic circuit board 36. When viewed in a plan view, in which the axial direction 18 is aligned substantially parallel to a viewing direction, the magnet 14 covers the switching element 16 in FIG

Essential. The magnet 14 has a substantially cylindrical shape, wherein a thickness aligned in the axial direction 18 is substantially smaller than a diameter of the magnet 14.

In the first end position-and thus in the starting position-of the spindle shaft 12 (see Fig. 2) is a distance between the magnet 14 and the switching element sixteenth

chosen sufficiently large to achieve an open state of the switching element 16. Upon movement of the spindle shaft 12 in the axial direction 18 of the first

End position in the second end position of the magnet 14 is moved. As a result, a distance between the magnet 14 and the switching element 16 is reduced. In the second end position of the spindle shaft 12 (see Fig. 3), a magnetic field generated by the magnet 14 at the location of the switching element 16 is sufficiently large to cause switching of the switching element 16. The magnet 14 operates in the second end position of Spindle shaft 12, the switching element 16. In a movement of the magnet 14 in

Axial direction 18 occur the switching tabs 38, triggered by the magnetic field of the

Magnet 14, in an overlap area in contact. As a result, a switching of the switching element 16 is effected. In the second end position of the magnet 14, the magnet 14 and the switching element 16 are arranged spaced apart in the axial direction 18. Thus, the magnet 14 switches the switching element 16 contactless. A distance between the magnet 14 and the switching element 16 in the second end position is substantially 0.5 mm. For actuation of the switching element 16, the magnet 14 is moved in the axial direction 18 by a distance of substantially 2 mm. Upon actuation and thus switching of the switching element 16, electric current flows through the switching element 16 between the supply unit 42 and the ignition unit 22 (an electrical return from the ignition unit 22 to the

Supply unit 42 is not shown in the figures for the sake of clarity). In an operating state, the ignition unit 22 registers an actuation of the

Switching element 16. The ignition unit 22 ignites upon actuation of the

Switching element 16, the gas flame. This allows a cooking process. Between an output of the ignition unit and an input of an ignition unit, which is provided for ignition of the gas flame, for example, could

Electronic component, which converts a DC signal into a

AC signal is provided, be arranged.

reference numeral

10 Gasgar device

12 spindle shaft

14 magnet

16 switching element

18 axial direction

20 control knob

22 ignition unit

24 gas cooking appliance

26 burners

28 pot carrier

30 basic body

32 mounting area

34 rotation axis

36 electronic board

38 tongue

40 containers

42 supply unit

Claims

Patent claims

1. Gas cooking device, in particular gas cooking device, with at least one spindle shaft (12), which is rotatably mounted and / or axially displaceable between at least two end positions, and with at least one magnet (14), which is provided for at least one magnetically actuated switching element (16 ), characterized in that the at least one magnet (14) is fastened to the at least one spindle shaft (12) in a mounted state at least in the axial direction (18) of the at least one spindle shaft (12) and is intended to be in at least one of the at least two end positions of the at least one spindle shaft (12) to actuate the at least one switching element (16).

2. Gas cooking device according to claim 1, characterized by the at least one magnetically actuated switching element (16).

3. Gas cooking device according to claim 2, characterized in that

at least one switching element (16) has at least one reed switch.

4. Gas cooking device according to one of claims 2 or 3, characterized

characterized in that the at least one magnet (14) is intended to switch the at least one switching element (16) in a contactless manner.

5. Gas cooking device according to one of the preceding claims, characterized

characterized in that the at least one magnet (14) is intended to be moved by a maximum distance of 3 mm to actuate the at least one switching element (16).

6. Gas cooking device at least according to claim 2, characterized in that the at least one magnet (14) at least substantially covers the at least one switching element (16) when viewed in a top view. Gas cooking device according to one of the preceding claims, characterized by at least one control knob (20) which is provided for moving the at least one spindle shaft (12) at least in the axial direction (18).

Gas cooking device according to one of the preceding claims,

characterized by at least one ignition unit (22), which is intended to ignite at least one gas flame when the at least one switching element (16) is actuated.

9. Gas cooking device, in particular gas hob, with at least one gas cooking device (10) according to one of the preceding claims.