DE102010016248A1 - Electric motor operated kitchen machine for cooking, refining and steaming food, has bolt elements engaged in rear grip formed at cover plate or stirring jar, where movement of bolt elements is effected by actuator arranged outside of jar - Google Patents

Abstract

The machine (1) has a stirring jar (7) locked by a cover plate (9). A gasket is arranged between the cover plate and an opening edge of the stirring jar. The cover plate is lockable by bolt elements, where the bolt elements are engaged in a rear grip formed at the cover plate or the stirring jar. Movement of the bolt elements is effected by an actuator provided at the machine, where the actuator is arranged outside of the stirring jar. The bolt elements are designed to be moveable hydraulically or pneumatically or mechanically.

Description

The invention initially relates to an electromotive-operated food processor with a mixing vessel which can be closed by a lid, the lid being locked against removal relative to the mixing vessel during operation of the food processor, wherein a seal is preferably further arranged between the lid and an associated opening edge of the mixing vessel is.

Food processors of the type in question are known. These are used, in particular, in the household sector for the preparation or preparation of food, for which purpose an electromotive drivable agitator is provided in the mixing vessel. The drive of the agitator is in this case provided in the food processor, for which purpose the mixing vessel has a corresponding coupling formation on the bottom side. To use the mixing vessel is to be used in accordance with a mixing vessel receptacle of the food processor, which is accompanied by a frictional coupling between the drive and the agitator is reached. Such stirring vessels are also lid-closed, in particular during operation, which lid closure position is locked in such a way that removal of the lid is prevented during operation, in particular during agitator operation. In order to prevent leakage of food or the like located in the mixing vessel, possibly via the agitator in motion, or the like, it is further known to provide a seal which is fastened to the lid and acts against the opening edge of the mixing vessel. Furthermore, kitchen machines are known in this context, in which the mixing vessel or the medium located in the mixing vessel is heated directly or indirectly, including, for example, the bottom side of the mixing vessel an electrical resistance heater is provided.

Next is, for example, on the EP 0 861 626 B1 directed. From this patent a food processor of the type in question is known, in which the lid is lockable according to a rotation lock on the mixing vessel. For this purpose, a swivel lever to be actuated by the user is provided on the mixing vessel side, which engages with an opening facing the lid for locking the lid in an associated lid groove. Opposite this locking region, the cover engages behind a Rührgefäßabschnitt. The example thumb-actuatable pivot lever or its locking portion pivots in the course of actuation about a nearly vertical axis of the mixing vessel or about an axis extending at an acute angle to the vertical axis. Next is from the EP 1 269 898 A1 a training in which the lid is placed in the mounted on the stirring vessel together with the mixing vessel in the mixing vessel receptacle of the food processor to the center axis of the mixing vessel, said in the course of this pivotal displacement provided on the cover, radially outwardly projecting radial projections in associated receptacles of a Engage the housing section of the food processor and so lock the lid against removal.

The invention further relates to a preparation vessel, for example for cooking, cooking or steaming food, which is closable by a lid, wherein the lid is locked in use relative to the preparation vessel against removal, wherein further between the lid and an associated opening edge of the preparation vessel preferably a seal is arranged.

For preparation in commercial kitchens, or, for example. In the form of pressure cooker, in which to build up an internal pressure of the lid under sealing contact with the opening edge of the pot to Sequence locking, in particular bayonet lock is fixed to the pot.

In view of the above-described prior art, a technical problem of the invention is seen in improving a food processor of the type in question, in particular with regard to the lid lock on. Next, the problem is a preparation vessel with respect to the lid lock to further improve.

This problem is initially and essentially solved with respect to a food processor by the subject of claim 1, wherein it is aimed that the lid by one or more movable locking elements can be locked, wherein the locking elements in a, formed on the lid or on the mixing vessel rear handle engage and the movement of the locking elements by a provided on the kitchen machine drive is effected, which is arranged outside of the mixing vessel. With regard to the preparation vessel this problem is solved first and foremost by the subject matter of claim 2, wherein it is stated that the cover can be locked by one or more movable locking elements, wherein the locking elements in a formed on the lid or on the preparation vessel rear handle engage and the movement of the locking elements by a drive is effected, which is arranged outside of the preparation vessel. According to this embodiment, a locking of the lid on the vessel can be achieved in handling technology favorable manner, wherein the vessel, as in the other text, either a mixing vessel for a food processor or a preparation vessel. The movement of the bar or elements in the locking position or to cancel the locking position in the opposite direction is preferably brought about and triggered by a drive device side, wherein further in the case of a food processor in particular the locking of the lid, for example. Is done automatically due to the insertion of the mixing vessel in a correspondingly formed Rührgefäßaufnahme the food processor, For what further, for example, appropriate detection means are provided which detect the stirring vessel used. Preferably, in this respect further that the lid lock in the inserted state of the mixing vessel, for example, is caused by a key operation by the user, whereupon a machine-side drive outside of the mixing vessel, according to preferred within the preferably designed as a table-top food processor for moving the or the locking elements is triggered. In the case of a preparation vessel this can be used in a correspondingly adapted recording of a, the drive having, basic device. With regard to the drive, it is preferably an electromotive drive, for example, in the form of a linearly displaceable, possibly acted upon by the drive with the interposition of a transmission piston or the like. Alternatively, an electromagnetic drive configuration in this regard is possible, for example. In the form of a solenoid. Preferably, both the locking position and the unlocking position of the one or more locking elements is brought about by corresponding activation or deactivation of the drive. Thus, according to a further preferred locking of the lid at the opening edge of the vessel only in the inserted into the recording of the food processor or the basic unit state of the vessel allows as preferred only in this position on the machine-side drive a radial displacement of the locking elements or in the locking position the lid is possible.

With particular reference to a vertical cross-section through the area of cooperation between the lid and the vessel, in particular the lid and the opening edge of the vessel, each locking element performs a linear movement in the radial direction (with respect to a central axis of the vessel) in the course of locking as well as more preferably in the course of unlocking. , The one or more locking elements are provided in a preferred embodiment of the vessel, for cooperation with a cover formed on the rear handle. Also preferred is an arrangement of the bar or the locking elements on the lid, in which case a cooperation with a vessel-side rear handle is provided. If the locking elements are arranged on the cover side, it is further preferred to actuate the same via device-side aids, more preferably via aids which are designed on the device side. The rear grip of the lid or of the vessel which is to be engaged behind by the locking element or locking elements is furthermore preferably designed such that the cover is secured in particular against an axial lifting or lifting, more preferably such that the locking elements form the axial displacement path of the section having the rear grip especially the lid lock. Preferably, the locking elements are provided on at least two circumferentially spaced areas, so that a corresponding blocking is achieved at these at least two areas.

The above-described solution lends itself in particular to a lid for a, a food processor zuordbares mixing vessel, but is also applicable in cover-like aufzusetzenden on the mixing vessel accessories share for the mixing vessel, which accessories are fixed directly or with the interposition of the lid on the mixing vessel. For example, the proposed solution for. For a cutting unit, further example. For cutting vegetables. In this regard is on the DE 10 2008 013 863 A1 directed. Also, a prescribed lock is, for example, useful for defining a, preferably a central filling / observation opening of the lid passing through tool, such as, for example, a citrus press, which further example. From the DE 10 2009 006 672 A1 is known. Even with a mixing vessel with a vertical conveyor, which vertical conveyor preferably passes through a central filling / observation opening of the lid, more preferably for the formation of a chocolate fountain or the like, the proposed solution proves advantageous. In this regard is on the DE 10 2009 037 229 A1 directed. Next, the proposed solution also offers conventional cooking vessels such as pots, possibly for commercial kitchens, or steam cookers.

Further features of the invention are explained below, also in the description of the figures, often in their preferred association with the subject matter of claim 1 or 2, or with features of further claims. But they can also be in an assignment to only individual features of claim 1 or 2 or the respective further claim or each independently of importance.

In the case of a particularly impermeable support of the cover on the vessel or on the opening edge of the vessel, the respective rear grip cooperating with the locking element is preferably formed solely in those areas which are provided for cooperation with the locking elements. Is, as further preferred, the cover with respect to its circumferential orientation indiscriminately placed on the vessel, so on, for example. In a circular shape in the outline of the cover, further example. In a square configuration of the lid, so is preferably the rear handle on the lid or on depending on the vessel Arrangement of the locking elements circumferentially formed so as to allow locking of the lid against removal in each lid support position. Accordingly, it is not necessary for the user to place the lid in a predetermined orientation on the vessel. The lid lock is given in each lid orientation.

In a further preferred embodiment of the subject invention, it is provided that the seal for locking engagement with the lid is movable, according to which the seal is the locking element according to the invention. The preferred Rührgefäßseitige, more preferably provided in the region of the opening edge of the vessel seal accordingly assumes a dual function, namely on the one hand in a conventional manner a sealing function and further the function of a locking element for locking the lid to the vessel. For this purpose, it is further preferred that the seal with respect to a vertical center axis of the vessel is radially movable, so from an unlocked position into a locking position and back. In particular, in a circumferentially cooperating with the opening edge of the vessel seal, the above-described radial mobility of the seal refers to a vertical cross section, so further with respect to the peripheral seal a radial movement thereof in the locking position by a radial movement of the seal in the direction of the vertical Center axis of the vessel is reached, further corresponding to a circular disc-shaped lid and corresponding annular configuration of the opening edge by reducing the inner diameter of the seal. In the unlocked position, however, the seal is extended to an inner diameter, which allows easy removal and placement of the lid on the opening edge. The portion of the cover which forms the rear grip is preferably movable freely past the seal which represents the locking element.

In a preferred embodiment, the seal is pneumatically or hydraulically or mechanically movable. In the case of a proposed mechanism acts, for example, a linear plunger on the locking element, including further, for example, an electric motor or an electromagnet is provided. In the case of a pneumatic movement of the seal, a compressor is preferably provided, which ensures the sealing movement for the necessary increase in air pressure. Preference is given to an embodiment in which the seal is moved hydraulically, in particular using a hydraulic oil, more preferably using a hydraulic fluid permissible for use in appliances for food preparation. If the transmission medium is a fluid, an incompressible medium is preferred in this regard.

In a further preferred embodiment, an enclosed hydraulic volume is provided within the vessel, which is acted upon by an outside of the vessel, namely preferably provided in the basic unit of the food processor actuator. The hydraulic volume provided in the vessel is enclosed in such a way that it can not escape even when the vessel is removed, for example, from the mixing vessel receptacle of the food processor, preferably also not using household articles, more particularly not in the course of cleaning the vessel. The amount of hydraulic fluid is in this case dimensioned such that, as a result of being acted upon by the device-side actuating part via the hydraulic fluid, a preferably radially inward displacement of the locking element, in particular the peripheral seal at the opening edge of the vessel can be brought about. The preferably continued in the locking position acting on the hydraulic volume control part keeps the pressure within the vessel-side hydraulic system at a preferably defined pressure, which is the locking of the lid on the vessel even when increasing the internal pressure - eg. When cooking a food in the vessel - is ensured. With a preferred return displacement of the control part and corresponding non-application of the hydraulic volume relaxation of the hydraulic system is achieved, according to the no longer existing hydraulic pressure, a preferred automatic reset of the locking element, in particular the seal is achieved in the unlocked position. The lid is hereafter preferably low-friction lifted off the vessel. In an alternative embodiment, a trapped air or gas volume is provided in the vessel, which is acted upon accordingly by an outside of the vessel provided actuating part.

The action on the hydraulic volume, alternatively on the volume of air or gas, takes place in a further preferred embodiment on the foot side of the vessel, more particularly in a region assigned to the seating area of the vessel in a correspondingly shaped vessel receptacle of the food processor or of the basic appliance. More preferably, the impact area in a lower quarter to a lower third - each viewed from a footprint of the vessel in the vertical height direction - formed. In a corresponding assignment position in the mixing bowl used in the food processor, the machine-side actuator is suitable for acting on the hydraulic volume, in a further preferred embodiment for acting in the food processor, a movable plunger is provided, further in particular a linearly movable plunger. This may be a linearly movable via an electric motor and optionally via an intermediate gear, more preferably with respect to a central center axis act of the stirring vessel used in the mixing vessel or the preparation vessel used in the base device radially movable plunger, further example. To an electromagnetically moving plunger, for example. In the form of a solenoid. The ram preferably has two defined end positions, namely a defined end position in the direction of loading of the rührgefäßseitigen hydraulic volume and a defined retraction position in which the hydraulic volume of the vessel is not acted upon. Both plunger end positions are more preferably detectable, for example, sensory detected.

A vascular-side transmission means is preferably formed pump-like, in one embodiment, a piston-cylinder arrangement, the piston radially outward offers an application surface for the machine-side ram and - with respect to a vertical center axis of the vessel - radially inwardly directed a piston surface to Has loading of the hydraulic volume. In a preferred embodiment, a bellows member is provided in this regard in connection with a food processor rührgefäßseitig, on the vessel side, preferably on the machine side ram or the like can be acted upon. In the preferred embodiment, the bellows element is a flexible soft plastic part or a bellows with an inelastic wall, which, according to the loading on the machine-side plunger, can be changed in terms of its volume, in particular in the case of being acted upon. With elimination of the application, the bellows element preferably automatically returns to its volume-increased initial position. Due to the possible change in volume of the bellows element is a corresponding effect on the hydraulic volume, further in particular for the displacement of the or the locking elements, further in particular for the displacement of the seal in the locking position and out of this allows. Further alternatively, a membrane housing or a rolling diaphragm is possible with regard to the transmission means.

In a further preferred embodiment of the subject invention, a line connection between a foot-side hydraulic fluid supply to an opening edge side hydraulic fluid reservoir is formed. The foot-side hydraulic fluid reservoir is in this case further preferably formed in or assigned to the loadable, vessel-side bellows element. The opening edge-side hydraulic fluid supply is associated with the displaceable locking element or the seal, to which further, as explained in more detail below, a preferably annular surrounding the seal cavity is provided. The further provided line connection of the hydraulic fluid reservoirs, preferably in the form of a hollow chamber channel, bridges the vertical distance between the foot-side, d. H. more preferably in a lower quarter or a lower third of the vessel provided for hydraulic fluid supply and the opening edge side provided stock for acting on the, preferably the locking of the lid serving seal. The line connection is pressure-stable, correspondingly non-elastic, for example in the form of a pressure-resistant hose or a rigid pipe connection. Alternatively, the line connection is designed as a hollow chamber of a double-walled mixing vessel wall. Both chambers (hydraulic fluid supply) and the line connection are preferably completely filled with the medium and are sealingly connected.

This line connection - in the simplest case a tube connecting the hydraulic fluid reservoirs - extends in an embodiment on the outside of the vessel wall along the same. In connection with a food processor, preference is given to an embodiment in which the mixing vessel has a handle which extends vertically and wherein furthermore the line connection is provided to pass through the handle. Accordingly, the line connection is preferably protected against external interference integrated in the Rührgefäßgriff. In this context, the bellows is more preferably arranged in a foot-side region of the handle, in particular in a foot-side root region of the handle on the mixing vessel. Advantageously, this, the bellows or the like having foot portion of the mixing vessel is not accessible to the user when used in the mixing vessel of the device mixing vessel, which is counteracted possible manipulation of the lid lock.

More preferably, the seal in a cross section, in particular in a with respect to the joining position of the lid vertical cross-section overall U-shaped, wherein the two U-legs are not necessarily parallel to each other, but possibly at an acute angle of 1 ° to Including 5 ° to a horizontal plane. Also connecting the U-legs, at least in an unloaded basic position approximately vertically in cross-section extending U-web does not necessarily include a right angle of 90 ° to the U-legs, wherein further the U-web also one of a cross-section elongated form may have different design.

The seal is supported on the mixing vessel via one or, as further preferred, via both U-legs, wherein the U-web is furthermore movable for locking and further for sealing against the lid, so further preferably from an unloaded basic position, in which the U-bar is movable. Footbridge extends at least approximately between the U-legs, out into a radially inward bulged locking position, in which locking position preferably at least a portion of the U-web from the space defined between the U-legs space passes radially inward, so as to achieve the locking of the lid and more preferably the seal. In the case of a preferred hydraulic actuation of the seal, the hydraulic fluid acts on the at least radially inwardly limited space through the U-legs and the U-web, corresponding to the U-legs facing back of the U-web.

The U-web formed in a further preferred embodiment, at least over a vertical portion of a blocking element, which preferably has a triangular or trapezoidal expression in the vertical cross-section, this further preferably with a considered in cross-section height-width ratio of <2, so for example 1.95: 1 or 1.15: 1.

In a preferred embodiment, the lid has a collar which engages in the vessel and, in the case of a further preferred circular-disk-shaped configuration of the lid, is further preferably designed and arranged in the form of a circular ring in plan view, concentric with a central axis of the vessel. The radially outwardly facing, circumferential collar surface cooperates in a preferred embodiment in the locked state with the locking element or with the active, displaceable in the locking position sealing portion, which is further provided in the region of the collar of the locking serving for rear grip. This engages in the locking position, the locking element or the locking active portion of the seal, so that a lifting of the lid is prevented in the locking position. Next, the collar is advantageously designed so that in a load case of the lid, for example. In the case of an increase in pressure in the vessel, the locking locking of the lid is supported, according to a self-reinforcing blocking. In the case of a hydraulic or pneumatic actuation of the locking element according to this embodiment, a backup is achieved in case of failure of the locking element pressurization. The self-locking is only canceled when the pressure in the vessel has fallen below a defined value.

Advantageously, the seal consists of a soft plastic, in particular of an elastic soft plastic, for example. Elastomers such as TPE (thermoplastic elastomers), NBR (nitrile-butadiene rubber) or silicone.

From the locked position, the section of the seal which is decisive for the locking, more preferably also for the sealing, preferably moves automatically back into the releasing basic orientation, this further after a corresponding reduction of the load acting on the seal in the event of locking. This resilience is preferably given by the elastic properties of the sealing material. In a further preferred embodiment, the provision is supported by the fact that the seal has an existing of a hard material, integrated spring. This spring is for example. In the course of the production of the seal encapsulated by the sealing material, is further preferred according to fully enclosed preferably in the seal. With regard to the selected hard material for the spring, a spring steel is preferably used, more preferably in the form of a helical spring or compression coil spring. The restoring force of the integrated spring is - preferably in addition to the self-restoring force of the seal - such that it can be overcome by the seal or the effective sealing portion displaceable into the locking position admission medium. Thus, in this context, it is preferred that when the pressure in the vessel during the preparation process drops from, for example, 0.5 bar to 0 bar, the embedded return spring returns the seal or the locking element formed thereby to the starting position. Due to the arrangement of a spring in the seal, the recovery capability is constant regardless of the temperature and / or the aging state of the seal.

In any case, the soft-plastic part of the seal is preferably at a distance from the vessel wall with the formation of a cavity, which cavity is preferably used to flow through a hydraulic fluid to act on the sealing and blocking-effective section of the seal or of the soft-plastic part.

In order to ensure in particular a controlled displacement of the locking element forming the sealing portion is provided in a development of the subject invention that the seal is composed of a hard and a soft plastic part, wherein the hard plastic part is arranged radially outward. In this case, the hard plastic part serves to support the seal, in particular in the region of the U-opening of the seal, which is preferably U-shaped in a vertical cross section, in such a way that, according to the support, a defined deflection of the relevant portion of the soft plastic part of the seal into the locking and preferably sealing position is reached. In addition, the hard plastic part is used in a preferred embodiment together with associated Gefäßwandungsabschnitten in a preferred U-shaped configuration of the soft plastic part of the holder of the U-legs.

In addition, it is preferred that the cavity is formed in a preferred vertical cross-section between the soft plastic part and the hard plastic part, so that further correspondingly preferred this cavity is formed independently of the vessel wall in the opening wall area. The hard plastic part is in this case in a configuration as a separate, in the course of the production of the seal assembly as a total annular Loseteil ago. Alternatively, a one-piece design of hard plastic part and soft plastic part is possible, so for example. According to injecting the soft plastic component to the hard plastic part.

According to the solution described above, in a preferred embodiment, the combined function of sealing and blocking synchronously, wherein a high-strength blocking in the axial direction of the lid is achieved independently of an internal pressure in the vessel. Preferably, the locking takes place uniformly over the entire circumference of the lid. In case of stress, d. H. at an internal pressure in the vessel, remains even at an operating pressure failure - d. H. in case of failure of the force acting on the locking element in the direction of the locking position - an automatic blocking obtained until the internal pressure in the vessel drops. Also, in particular, the holder of the seal on the vessel, these are not removed by external influences, such as, for example, when cleaning, or in case of misuse or overstress from the holder removable. In addition, the mounting seat of the seal is fixed so that penetration of food or foreign bodies is prevented, which foreign bodies could impair the function. Also, the recovery of the gasket is always constant regardless of the temperature and aging state of the gasket material due to the integrated spring.

In addition, the lid is preferably rotatorisch non-directional, force-free and added without additional manual locking operation, the locking operation is preferably carried out without friction. The sealing and blocking function takes place here preferably combined, wherein in a further preferred embodiment, the activation of the machine-side actuating part, for example. In the case of a food processor of the plunger is feasible only in a stirred vessel used in the machine side Rührgefäßaufnahme. Further, in particular, the activation of the provided in the mixing vessel agitator, more preferably also a possibly provided on the bottom side of the mixing vessel heater only feasible if the lid is properly placed on the mixing vessel and locked according to this. Accordingly, preferably detectors, more particularly sensors are provided which detect the proper lid lock and allow activation of the agitator and possibly the heating of the mixing vessel.

The invention is explained in more detail below with reference to the attached drawing, which represents only one exemplary embodiment. It shows:

1 in perspective view of an electric motor driven food processor with an associated, lid-closed mixing vessel;

2 the mixing vessel in a vertical sectional view without attached lid;

3 the enlarged area III in 2 ;

4 the enlarged area IV in 2 ;

5 the in 3 designated area V in an enlarged view with attached and locked lid;

6 one opposite 5 offset in the circumferential direction sectional view.

Shown and described is first with reference to 1 an electrically powered food processor 1 , This first has a control panel 2 on with a regulator 3 and buttons 4 and preferably a display 5 to display the particular on the controller 3 or the buttons 4 parameters to be set.

Furthermore, the food processor has 1 via a mixing vessel receptacle 6 , In this is a mixing vessel 7 , in particular in the foot region of the same preferably receiving and retainable in a form-fitting manner.

The stirring vessel 7 is preferably formed substantially rotationally symmetrical, with a central vertical axis x.

In the bottom area shows the mixing vessel 7 an only schematically illustrated agitator 36 on. This is in the assignment position of the mixing vessel 7 in the mixing vessel receptacle 6 positively coupled with one in the food processor 1 provided agitator drive.

The electrical supply of the agitator drive and possibly a container bottom side provided heating 37 and also the electronic control of the entire food processor 1 is via a power cord 8th reached.

The container 7 is more particularly in the operation of the agitator 36 through a lid 9 locked. This preferably has central, the vertical axis x of the mixing vessel 7 absorbing, a filling opening 38 on, this further preferred in total substantially circular disk-shaped outline of the lid 9 ,

The lid 9 rests on its peripheral edge area 10 on the circumference of the upwards pointing vessel opening 11 extending opening edge 12 from.

The lid 9 is on the underside, ie facing in allocation position, the vessel interior, with a substantially coaxial with the vertical axis x extending collar 13 Mistake. This extends in a vertical cross-section according to 2 like a strip, forming a rear grip 14 in the free end area. This grip 14 is formed by a at the free end of the collar 13 molded, circumferential and radially outwardly facing shoulder 15 ,

In the area of the opening edge 12 is on the mixing vessel 7 provided a substantially radially inwardly directed sealing / locking arrangement DV. This serves in the lid assignment position of the locking of the same and the seal.

The sealing / locking arrangement DV initially has a seal 16 on, which in the area of the opening edge 12 is held. The seal 16 consists of a soft plastic part 17 and a hard plastic part 18 , wherein the soft plastic part 17 for sealing and locking in cooperation with the lid-side rear handle 14 is designed.

The soft plastic part 17 is substantially U-shaped with respect to a vertical cross-section, with two vertically spaced U-legs 19 . 20 and a U-leg connecting the U-legs 21 who is in a basic position according to the 2 and 3 extends substantially in cross-section vertically or aligned with a parallel to the vertical axis x.

The underground bridge 21 is in his vertical upper, the U-thighs 19 facing section (about half the vertical length of the U-web 21 ) opposite the vertically lower portion of the U-web 21 thickened, forming a solid locking element accordingly 22 with a matched to a trapezoidal cross-sectional area extension, wherein in the illustrated embodiment, viewed in the radial direction width dimension of the locking element 22 approximately 0.7 times the vertical extent. Approximately in the middle of the downward-pointing trapezoid leg of the locking element 22 grows the lower portion of the U-web 21 out, which opposite the locking element 22 is substantially thin-walled designed, so preferably with a material thickness which is about 0.3 times the width considered in the radial direction of the locking element 22 equivalent. In addition, the thus formed Anlenkungssteg 23 starting from the downwardly pointing leg of the locking element 22 designed pointing radially inward S-shaped, this further transient in the vertically lower U-leg 20 ,

As further illustrated, the Anlenkungssteg 23 over the U-thigh 20 in a in cross-section adapted to the inclination of the associated vessel wall lip portion 24 continued.

According to the above-described arrangement of U-legs 19 . 20 and underground jetty 21 is the thereby limited U-opening of the soft plastic part 17 pointing radially outwards. In this U-opening is the hard plastic part 18 used. This serves as a support profile 25 under the bottom support of the vertically upper U-leg 19 as well as top support and support of the vertically lower U-leg 20 , In an unloaded basic position of the soft plastic part 17 , in particular of the locking element 20 the latter is supported by the connection to the Anlenkungssteg 23 opposite leg on the support profile 25 from.

Between the support profile 25 or the hard plastic part 18 and the subway 21 of soft plastic part 17 is a cavity 26 leave, which is due to the rotationally symmetrical design of the sealing / locking arrangement DV as an annulus. This cavity 26 is due to the sealing attachment of the soft plastic part 17 on the legs of the vertical cross-section substantially C-shaped support profile 25 closed except for a radially outwardly guided access opening 27 , The latter enforces the profile 25 and one of the holder of the vertically upper U-leg 19 serving, the support profile 25 radially outside comprehensive wall section 28 of the vessel 7 , A cover-like fixed housing component 29 over the vertical upper U-leg 19 and is at the wall section 28 attached.

In the area of the locking element 22 is in the seal 16 or in the soft plastic part 17 a preferably made of a spring steel spring 30 arranged in the form of a compression coil spring, this further example. According to encapsulation with the soft plastic material for the production of the seal 16 , The feather 30 extends in a coaxial with the vertical axis x annular.

The U-thighs 19 and 20 are due to tension between the support profile 25 or hard plastic part 18 and the housing component 29 as well as the wall section 28 clamped, wherein the gaps are kept so low in the Einspannungsbereichen that foreign objects such as food can not penetrate during operation of the agitator side agitator.

Due to the rotationally symmetrical design of the mixing vessel 7 , in particular in the region of the opening edge 12 as well as the corresponding design of the lid 9 is an undirected, ie indiscriminate laying of the lid 9 on the mixing vessel 7 allows. This placement is done without overcoming a sealing bias. This is due to the fact that the outer diameter of the collar-side shoulder 15 equal, preferably smaller, is dimensioned as the smallest inner diameter of the seal 16 in the region of the locking element 22 in the in 2 illustrated basic position.

The stirring vessel 7 is further preferred for one-handed gripping the same with a vertically extending handle 39 Mistake. This lies here on the vessel wall 40 and extends substantially from a foot area 41 to the level of the vessel opening 11 in which area the handle 39 radially outward on the wall section 38 is attached.

The handle 39 forms a gripping area which is exempted for finger penetration 42 out, as well as on the vessel wall 40 leaning support area 43 , The latter is penetrated by a substantially vertically extending line connection 44 , preferably in the form of a rigid and thus pressure-resistant pipe connection. The line connection 44 is pressure-tight and tightly connected at one end to the hollow chamber-side access opening 27 and via this to the annular peripheral cavity 26 ,

Other end, ie in the foot area 41 is the line connection 44 pressure-tight and tightly connected to a bellows element 45 , In the illustrated embodiment, this is a bellows with non-elastic wall, which bellows due to its configuration in the axial direction against the given due to the wrinkling, resilient restoring force is compressible.

The bellows element 45 is in the foot area 41 of the mixing vessel 7 , more particularly below the gripping area 42 of the handle 39 arranged such that a central axis of the bellows element 45 is transverse to the vertical axis x of the mixing vessel 7 , further directed in particular in the horizontal direction.

The bellows element 45 lies in a receiving chamber 46 in the foot-side end of the handle 39 one. To the vessel outside is the bellows element 45 closed, with the corresponding bellows face 45 ' Accordingly exposed for applying radially outward. The bellows end face 45 ' opposite end face of the bellows element 45 is supported on an associated vertical wall of the receiving chamber 46 from, further from this end face a, the support wall of the receiving chamber 46 enforcing, in the exemplary embodiment circular cylindrical hollow chamber section 47 followed. The latter is open in the radial direction to the fluid connection of the in the bellows element 45 shaped space to the line connection 44 ,

The bellows element 45 forms together with the connected, preferably molded hollow chamber section 47 as well as with the line connection 44 and in the region of the seal annular circumferential cavity 26 a closed system, in particular a closed hydraulic system, which according to the above-described embodiment an integral part of the mixing vessel 7 is.

Accordingly, the system is preferably completely filled with an incompressible hydraulic fluid H. It adjusts accordingly a foot-side hydraulic fluid supply V, via the line connection 44 is connected to an opening edge side hydraulic fluid reservoir V '.

In the in the mixing vessel receptacle 6 the food processor 1 used utilization position of the mixing vessel 7 lies the pump-like acting bellows element 45 in assignment to one in the food processor 1 in the area of the mixing vessel receptacle 6 provided actuating part 48 , The latter is in the illustrated embodiment as linear in the horizontal direction, ie transverse to the vertical axis x of the mixing vessel 7 movable plunger 49 formed, preferably over one in the food processor 1 provided electric servomotor is moved. The pestle 49 is oriented so that its free, towards the foot area 41 of the mixing vessel 7 pointing end face is suitable, the, the bellows face 45 ' exposing opening 50 the receiving chamber 46 to pass through.

In the cover resting position is the lid edge area 10 plan on the assigned, through the housing component 29 formed opening edge 12 on. The collar-side radial shoulder 15 of the lid 19 is vertically below the locking element 22 positioned.

The locking of the lid 9 takes place by introducing the hydraulic fluid H through the access opening 27 in the cavity 26 , For this purpose, it is preferable to press the button further on in the control panel 2 provided button 51 the food processor 1 put into operation, according to a linear displacement of the plunger 49 in the direction of the bellows element 45 the latter within the receiving chamber 46 is compressed. As a result, the medium, here the hydraulic fluid H, through the line connection 44 in the annular circumferential cavity 26 in the field of sealing 16 pumped. In this pumping around as much hydraulic fluid H through the line connection 44 in the cavity 26 promoted that the seal, especially the soft plastic part 17 the seal, a forming movement performs to lock the lid 9 as well as for simultaneous sealing.

As a result of the pressurization, the U-web bulges 21 , in particular the locking element 22 forming portion thereof, radially inward with respect to the vertical axis x. This describes a downwardly and radially inwardly facing ratchet 31 of the locking element 22 a circular path around the transition area from the vertically upper U-leg 19 to the locking element 22 self-adjusting pivot point 32 , whereupon the ratchet tooth 31 in line sealing against the collar 13 of the lid 9 occurs (cf. 5 ). Here, the ratchet overruns 31 at the same time the radially outwardly pointing shoulder 15 , according to which by the shoulder 15 formed rear grip 14 the ratchet tooth 31 or undercuts the rotating in the direction of rotation locking tooth. In addition to the desired sealing is thereby at the same time a locking of the lid 9 achieved against lifting the same.

In the in the 5 and 6 shown load case, in which a pressure increase within the mixing vessel 7 the lid 9 is inclined to emigrate vertically above, the closing movement of the ratchet tooth 31 or the locking element 22 supports, so that sets itself a Selbstsperreffekt. This is due in particular to the fact that in the locked state, the circular line along the ratchet tooth 31 formed sealing edge, in which area at the same time the force attack acts at a Rührgefäß internal pressure, with respect to the vertical axis x smaller radius r describes as the circular line through the fulcrum 32 of the ratchet tooth 31 (Radius r '). This leaves on the ratchet 31 a self-closing torque with respect to the counterclockwise representations act. As a result of this configuration, the blockage in the lid lock position is maintained even with an operating pressure failure of the hydraulics. Only with a drop in the internal pressure of the stirring vessel to preferably 0 bar and reduced hydraulic pressure spends the embedded spring 30 the locking element 22 back to the starting position.

It is correspondingly given a seal with firmly assigned hinge points, which offers a particularly precise mode of operation, in particular a self-locking and reset option.

The on the seal or on the soft plastic part 17 acting hydraulic pressure is maintained throughout the service life, with appropriate loading of the bellows element 45 through the machine-side ram 49 , With switching off the food processor 1 moves the plunger 49 back to its original position, with the release of the bellows element 45 which, according to the fold-like configuration of the bellows wall, preferably automatically, if necessary supported by the automatic return movement of the soft plastic part 17 in the in 2 respectively. 4 resets the displayed basic position.

In a particularly advantageous manner, this is via the hydraulic fluid H to lock the lid 9 Serving, pump-like element - here the bellows element 45 - in the in the mixing vessel receptacle 6 the food processor 1 inserted position of the mixing vessel 7 not accessible from the outside, is held accordingly in a hiding position, so that manipulation of the lid locking mechanism is counteracted.

All disclosed features are essential to the invention. The disclosure of the associated / attached priority documents (copy of the prior application) is hereby also incorporated in full in the disclosure of the application, also for the purpose of including features of these documents in claims of the present application. The subclaims characterize in their optional sibling version independent inventive development of the prior art, in particular to make on the basis of these claims divisional applications.

LIST OF REFERENCE NUMBERS

1

food processor

2

Control panel

3

regulator

4

button

5

display

6

Rührgefäßaufnahme

7

mixing vessel

8th

Power cord

9

cover

10

border area

11

vessel opening

12

opening edge

13

collar

14

rear grip

15

shoulder

16

poetry

17

Soft plastic part

18

Hard plastic part

19

U-leg

20

U-leg

21

U-web

22

locking element

23

Anlenkungssteg

24

lip portion

25

support profile

26

cavity

27

access opening

28

wall section

29

housing component

30

feather

31

ratchet

32

pivot point

33

34

35

36

agitator

37

heater

38

fill opening

39

Handle

40

vessel wall

41

footer

42

Griffin area

43

support area

44

line connection

45

bellows

45 '

Balgstirnfläche

46

receiving chamber

47

Hollow chamber section

48

adjusting part

49

tappet

50

opening

51

button

r

radius

r '

radius

x

vertical axis

DV

Sealing / locking assembly

H

hydraulic fluid

V

Hydraulic fluid supply

V '

Hydraulic fluid supply

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

• EP 0861626 B1 [0003]
• EP 1269898 A1 [0003]
• DE 102008013863 A1 [0009]
• DE 102009006672 A1 [0009]
• DE 102009037229 A1 [0009]

Claims (10)

Electric motor driven food processor ( 1 ) with a mixing vessel ( 7 ), which by a cover ( 9 ) is closable, wherein the lid ( 9 ) when operating the food processor ( 1 ) relative to the stirring vessel ( 7 ) is locked against removal, wherein further between the lid ( 9 ) and an associated opening edge ( 12 ) of the mixing vessel ( 7 ) preferably a seal ( 16 ), characterized in that the lid ( 9 ) by one or more movable locking elements ( 22 ) is lockable, wherein the locking elements ( 22 ) in one, on the lid ( 9 ) or on the mixing vessel ( 7 ) trained rear handle ( 14 ) and the movement of the locking elements ( 22 ) by one on the food processor ( 1 ) provided drive, which outside of the mixing vessel ( 7 ) is arranged. Preparation vessel, for example for cooking, cooking or steaming food, which is closed by a lid, the lid is locked in use relative to the preparation vessel against removal, wherein further between the lid and an associated opening edge of the preparation vessel preferably a seal is arranged , characterized in that the lid can be locked by one or more movable locking elements, wherein the locking elements engage in a, formed on the lid or on the preparation vessel rear handle and the movement of the locking elements by a drive is effected, which is arranged outside the preparation vessel. Food processor or preparation vessel according to claim 1 or claim 2 or in particular according thereto, characterized in that the locking elements ( 22 ) are hydraulically or pneumatically or mechanically movable. Food processor or preparation vessel according to one or more of the preceding claims or in particular according thereto, characterized in that within the mixing vessel ( 7 ) or of the preparation vessel an enclosed hydraulic volume is provided, which by an outside of the mixing vessel ( 7 ) or preparation vessel provided actuating part ( 48 ) is acted upon. Food processor or preparation vessel according to one or more of the preceding claims or in particular according thereto, characterized in that the action on the foot side of the mixing vessel ( 7 ) or preparation vessel takes place. Food processor or preparation vessel according to one or more of the preceding claims or in particular according thereto, characterized in that for action in the food processor ( 1 ) a movable plunger ( 49 ) is provided. Food processor or preparation vessel according to one or more of the preceding claims or in particular according thereto, characterized in that the mixing vessel side or preparation vessel side a bellows element ( 45 ) is provided on the vessel side is acted upon. Food processor or preparation vessel according to one or more of the preceding claims or in particular according thereto, characterized in that a line connection ( 44 ) between a foot-side hydraulic fluid reservoir (V) and an opening edge-side hydraulic fluid reservoir (V ') is formed. Food processor or preparation vessel according to one or more of the preceding claims or in particular according thereto, characterized in that the mixing vessel ( 7 ) or the preparation vessel has a vertically extending handle ( 39 ) and that the line connection ( 44 ) the handle ( 39 ) is provided enforcing. Food processor or preparation vessel according to one or more of the preceding claims or in particular according thereto, characterized in that the bellows element ( 45 ) in a foot-side area of the handle ( 39 ) is arranged.

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