Multi-purpose kitchen appliance with vacuum device, adapter unit and method

Abstract

The present invention relates to a multi-purpose kitchen appliance (1), more particularly to a multi-purpose kitchen appliance having a base device (3) and a preparation container (2) connectable to the base device wherein the preparation container (2) has at least one pot (4) and a lid (5) closing a pot opening of the pot (4), wherein an evacuating device (6) integrated in the base device (3) or connected to the base device (3) has at least one evacuating unit (7) and a connecting element (8) wherein a first through-hole (9) is formed in the pot (4) or the lid (5) and the connecting element (8) is designed to fluidly connect the evacuating unit (7) to the through-hole (9) in order to evacuate the pot (4). The invention also relates to an adapter unit and to a method.

Description

Technical Field

[0001] The present invention relates to a multi - purpose kitchen appliance and method with a vacuum device. Background Art

[0002] Multi - purpose kitchen appliances are known. For example, documents DE 10 2014 112 959 A1 and DE102014113552A1 disclose multi - purpose kitchen appliances designed as combined cooking and mixing devices.

[0003] For example, a multi - purpose kitchen appliance has a removable pot, and a blender for preparing food, for example, is arranged in the pot. The blender can be driven by an electric motor on the kitchen appliance side, and for this purpose, the receiving area and the pot have corresponding coupling elements. In addition, it is known to provide a heating mechanism for the pot. For this purpose, the bottom of the pot has, for example, an electrically controlled heating element. Additionally, the pot can also be provided with electrical measuring equipment to measure temperature, pressure, etc.

[0004] Furthermore, methods for operating kitchen appliances are known from the prior art. For example, from DE 102016110715A1, a method is known, especially a method for operating a food processor, in which at least one processing device of the food processor is controlled to at least partially automatically prepare at least one food item during a preparation operation. The method includes the following steps:

[0005] - Determining at least one control value by initially acquiring at least one control parameter during the preparation process, where the control parameter is specific to the preparation,

[0006] - Determining at least one result value by secondarily acquiring at least one result parameter, where the result parameter is specific to the result of the preparation,

[0007] - Recording the control quality value and the result value in a preparation record such that they are assigned to the preparation as the recorded preparation. Summary of the Invention

[0008] The object of the present invention is to provide an alternative multi - purpose kitchen appliance. In addition, the object of the present invention is to provide an adapter unit for a pot lid. Finally, the object of the present invention is to provide a method for operating a multi - purpose kitchen appliance.

[0009] These objects are achieved by the features of independent claims 1, 17, and 19 respectively. Preferred embodiments are set forth in the dependent claims.

[0010] According to a first aspect of the present invention, there is provided a multi-purpose kitchen appliance, in particular a food processor having a base unit and a preparation container that can be connected to the base unit, the preparation container having at least one pot and a lid for closing the pot opening. In addition, a vacuum device is provided, which is integrated into the base unit or connected to the base unit. The vacuum equipment has at least one evacuation unit and a connection element, wherein a first penetration part is formed in the pot or in the lid, and the connection element is arranged to fluidly connect the evacuation unit to the penetration part for evacuating the pot. For example, the connection element can be designed as a vacuum hose.

[0011] The evacuation equipment is preferably adapted and provided for pumping fluid, in particular gas, and most preferably air, out of the pot. For this purpose, the evacuation equipment can be designed as, for example, a vacuum pump or other suitable compression equipment. The evacuation equipment can also be provided separately. In this case, the evacuation equipment can be fluidly connected to the pot via a connection element, for example, to evacuate the pot or pump out the fluid present in the pot.

[0012] For example, the fluid connection to the pot can be achieved via an opening in the lid or an opening in the side wall of the pot. Preferably, the first penetration part is formed by an opening in the lid.

[0013] Thus, the present invention provides a multi-purpose kitchen appliance equipped with a vacuum equipment. This means that the pot can be evacuated before preparing food. In this way, the oxidation process in the food to be processed can be reduced, and thus the destruction of beneficial enzymes and the undesired discoloration of the food can be prevented or at least reduced. This measure also enables vacuum cooking or vacuum cooking of meat, fish or vegetables at a relatively low temperature below 100 °C, and thus gentle preparation. There is no longer a need for additional mandatory plastic bags for encapsulating food.

[0014] In particular, the multi-purpose kitchen appliance is provided with a heating element for heating the food in the pot, so that the food can be boiled, steamed, cooked, etc. under vacuum by using the heating element.

[0015] The multi-purpose kitchen appliance 1 can particularly have a sensor device, wherein the sensor device is provided to sense pressure data related to the position of the pot. The control unit can be arranged to operate the vacuum equipment based on the pressure data. The control unit can be arranged to determine the initial pressure based on the pressure data and operate the vacuum equipment to adjust the pressure to a set point.

[0016] In an embodiment of the present invention, the penetration part is formed by an opening in the lid, and an adapter unit is inserted into the opening of the lid, wherein the adapter unit is arranged to be connected to the connection element. The adapter unit can be, for example, a plug that can be connected to the connection element on the one hand and placed on the adapter on the other hand.

[0017] The adapter unit may in particular comprise:

[0018] a base body, which is preferably rotationally symmetrically designed and is inserted through a lower open end into a first penetration part formed by a cover opening of a cover;

[0019] a first termination element, which terminates the base body at an upper axial end, and a receiving section for receiving a connecting element is formed on an upper side of the first termination element;

[0020] wherein the first termination element in the receiving part has a second penetration part and an elastic element arranged in the second penetration part, and the elastic element is configured to seal the second penetration part in at least a first use state and to open the second penetration part in at least a second use state.

[0021] Preferably, the elastic element is a rubber seal designed as a one-way valve. The rubber seal may in particular be inserted into the second penetration part. For example, when the rubber seal is enclosed by the connecting element and a vacuum is applied to the rubber seal, the rubber seal opens the second penetration part so that the pot can be evacuated. For example, when the evacuation is complete, the rubber seal closes and maintains the vacuum in the pot. In order to let air into the pot, for example, a force can be applied to the rubber seal by the user pressing down with a finger, thereby opening the penetration part and creating pressure equilibrium.

[0022] The adapter unit may in particular have protrusions extending radially outwards and arranged circumferentially on a circumferential section, and the protrusions form an axially downward-facing contact surface, which is configured to contact a corresponding contact surface of the cover.

[0023] In particular, the receiving section may have a protrusion extending axially upwards and circumferentially, and the protrusion forms a radial boundary of the receiving section.

[0024] Advantageously, a first sealing mechanism is arranged and designed to seal the adapter unit relative to the first penetration part of the cover. For example, this may be a rubber coating arranged around the circumference below the protrusion, which may contact a part of the cover extending axially downwards.

[0025] In a further embodiment of the invention, the adapter unit further comprises a connecting part. The connecting part is in particular rotationally symmetric and has a second upper termination element with a third penetration part, wherein the third opening can be connected to the connecting part via a connecting piece. The connecting piece that can be connected or is to be connected to the connecting element makes it easier to connect the connecting element to the first penetration part, in particular to an opening in the cover. For example, the connecting part can be designed as a plug. The connecting part can be integrally designed with the connecting element. In an alternative embodiment, the connecting element and the connecting part can be designed as separate parts, in particular two parts.

[0026] Preferably, the connecting part has a second sealing mechanism which can contact the receiving section and circumferentially enclose the elastic element. When the connecting part is placed on the receiving section, it encloses the elastic element and fluidly connects the second penetration part to the air inlet of the connecting element during evacuation. In other words, during the operation of the evacuation unit, the connecting part is tightly pressed against the top of the adapter unit, and the elastic element releases the second penetration part. Once the evacuation is completed, the connecting part can be removed while the elastic element of the adapter unit maintains the vacuum in the pot.

[0027] In this way, a connecting part that does not require a mechanical lock for evacuation can be advantageously provided. The sealed connection between the adapter unit and the connecting part is achieved by negative pressure. In this way, the connecting element can be further quickly deployed.

[0028] In an embodiment of the present invention, the lid closes the pot, and the connecting part connected to the connecting element is inserted into the receiving section such that the second sealing mechanism contacts the top of the first termination element, such that during evacuation of the pot by the evacuation unit,

[0029] the sealing mechanism of the connecting part is sucked or pressed into the receiving section, whereby the connecting part is tightly closed; and

[0030] the elastic element opens the penetration part such that a flow channel is formed which fluidly connects the space of the pot to the connecting element, such that the fluid present in the pot can be pumped out, and

[0031] when the evacuation is completed, the elastic element seals the second penetration part to maintain the vacuum in the pot and releases the connecting part for removal from the receiving section.

[0032] According to a second aspect of the present invention, there is provided an adapter unit for a lid of a multi-purpose kitchen appliance, the adapter unit comprising:

[0033] a base body, in particular a base body with a rotationally symmetric design, which can be inserted into the first penetration part of the lid of the pot by means of its lower open end,

[0034] a termination element which terminates the base body at its upper axial end and has a receiving section for receiving the connecting element formed on the upper side of the termination element;

[0035] wherein the termination element in the receiving part has a second penetration part and an elastic element arranged in the second penetration part, the elastic element being arranged to seal the penetration part in at least a first use state and to open the penetration part in at least a second use state.

[0036] The adapter unit according to the second aspect of the present invention may further be formed with the features of the adapter unit of the multi-purpose kitchen appliance according to the first aspect.

[0037] For the avoidance of repetition, reference is made to the above explanation.

[0038] According to a third aspect of the present invention, there is provided a method, namely a method of operating a multi-purpose kitchen appliance, the multi-purpose kitchen appliance including a preparation container having a pot and a lid, a base unit, and vacuum equipment arranged to evacuate the pot, wherein the method includes:

[0039] - Obtaining pressure data related to the position in the pot,

[0040] - Operating the vacuum equipment according to the pressure data in the pot to evacuate fluid from the pot.

[0041] The method is particularly intended to operate a food processor. Accordingly, preferably there is provided a method for operating a food processor with vacuum equipment to enable the preparation of food under vacuum conditions. A pressure sensor may particularly be used to obtain the pressure data. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Exemplary embodiments of the present invention are explained below with reference to the drawings.

[0043] In the drawings:

[0044] Figure 1 is a schematic view of a multi-purpose kitchen appliance in a preferred embodiment;

[0045] Figure 2 is in another preferred embodiment Figure 1 cross-sectional view of the multi-purpose kitchen appliance;

[0046] Figure 3 is Figure 1 another view and cross-sectional view of the multi-purpose kitchen appliance;

[0047] Figure 4 is Figure 1 , Figure 2 and Figure 3 several views of the lid of the pot of the multi-purpose kitchen appliance;

[0048] Figure 5 is for Figure 5 several views of the adapter in a preferred embodiment of the lid;

[0049] Figure 6 shows a connecting part in a preferred embodiment;

[0050] Figure 7 shows a container lid used with a vacuum hose;

[0051] Figure 8 shows a container for use with a Figure 8 container lid;

[0052] Figure 9 shows a method of operation. DETAILED DESCRIPTION

[0053] The design and function of the multi - purpose kitchen appliance and the adapter unit will now be explained with reference to the accompanying drawings. The drawings show preferred embodiments of the invention.

[0054] Figure 1 An exemplary multi - purpose kitchen appliance 1 is shown, which is in the form of a food processor that can be driven by an electric motor. The food processor 1 includes a component preparation container 2, a base unit 3, a pot 4, and a lid 5 with an opening 9.

[0055] The food processor 1 also has a stirrer or blade for preparing food. The blade is actively driven and connected to the drive unit via a coupling element. The food processor 1 can also be provided with a heating element. In addition, sensors can be provided, each sensor being arranged in different areas of, for example, the food processor 1, inside or outside the food processor 1, for collecting different acquisition variables.

[0056] Furthermore, the food processor 1 can include a control panel 30, which includes, for example, a display, preferably a touch screen. In particular, the control panel 30 serves as an input device. In particular, the display acts as both an input mechanism and an output mechanism. In particular, the control panel enables the user of the food processor 1 to set and / or activate and / or deactivate preparation parameters and / or recipes and / or operating parameters, such as stirrer speed, heating temperature, and / or duration of preparation or mixing, and / or various programs of the food processor. The display can also be used to output recipe - related instructions and / or tips and / or graphical operating elements.

[0057] The food processor 1 has a switch 40, which is particularly used to turn the food processor on and off. However, the switch 70 can also be used to confirm input commands or similar commands.

[0058] According to the invention, Figure 1 the shown food processor is provided with a vacuum device, by means of which, on the one hand, the pot 5 can be evacuated in order to prepare food in an evacuated state, and on the other hand, an external container (such as the shown container 50) can be evacuated in order to preserve the prepared food for a longer time.

[0059] A sensing device is arranged in the base unit 3 and is configured to sense pressure data related to the position of the pot 4, and to operate the vacuum device 6 based on the pressure data. The control unit can determine an initial pressure based on the pressure data and operate the vacuum device to adjust the pressure to a set point.

[0060] At different points in time during the evacuation process, the pressure measurement values can preferably be processed into control-relevant data. This allows an accurate statement to be made about the current state of the system.

[0061] Preferably, it is selected from a plurality of vacuum levels. The vacuum level is understood here as a measure of negative pressure. It has proven advantageous if three or four different vacuum levels can be selected. For example, in one embodiment, the following vacuum modes can be selected: 0 bar, 0.3 bar, and 0.7 bar. In another embodiment, the following vacuum modes can be selected: 0 bar, 0.25 bar, 0.5 bar, and 0.75 bar.

[0062] The vacuum equipment 6 can be operated via a control panel 30, which for example includes a display, preferably a touch screen. In particular, the control panel allows the user to set a specific vacuum level.

[0063] The advantage of providing different vacuum conditions is the ability to react flexibly to the preparation requirements of the food or the type of preparation. Thus, it can be envisaged that for each food and each cooking temperature, an absolute vacuum is not desired.

[0064] The vacuum equipment 6 is integrated into the base unit 3 and has at least one evacuation unit 7 in the form of a vacuum pump and a connection element 20. The connection element is preferably a vacuum hose 8. The vacuum hose 8 is connected to a device-side connection piece 81, which in turn fluidly connects the end of the vacuum hose 8 connected to it to the vacuum pump. The other end of the vacuum hose 8 is provided with a connection part 20, which is placed in the receiving area of the container 50. The receiving area of the container 50 has an opening, and a rubber element is inserted into the opening, which serves as a non-return valve. In this way, fluid (especially air) can be sucked out of the container 50, while the non-return valve maintains the vacuum in the container.

[0065] Additional details of the container and the container lid can be found in Figure 7 and Figure 8

[0066] Figure 2 It shows how the vacuum hose 8 fluidly connects the vacuum pump to the opening 9 of the lid 5. The detailed view A shows an enlarged cross-sectional view of the connection of the lid 5, the adapter unit 10, and the connection part 20.

[0067] To improve the connection of the vacuum hose 8, an adapter unit 10 is first provided, which is inserted into the opening 9 of the lid 5.

[0068] ​The adapter unit includes a rotationally symmetric base body 11 which is inserted into the opening 9 by means of its lower open end 12. Furthermore, the adapter unit includes a termination element 13 which terminates the base body 11 at its upper axial end, and a receiving section 14 for receiving the vacuum hose 8 is formed on the upper side of the termination element.

[0069] The termination element 13 has a second penetration part 15 in the receiving section 14 and an elastic element 16 arranged in the second penetration part 15, which elastic element is configured to seal the penetration part 15 in at least a first use state and to open the penetration part 15 in at least a second use state.

[0070] The elastic element 16 is a rubber seal which is inserted into a hole-shaped penetration part and is designed as a one-way valve. When a vacuum is applied, the rubber seal 16 releases the opening 15 so that air can be evacuated, and the vacuum in the pot is maintained when the evacuation is complete. By manually pressing the center of the rubber seal 16, the opening 15 is opened and pressure equalization can be achieved.

[0071] The adapter unit 10 further has on its circumferential section radially outwardly extending and circumferentially arranged protrusions 17 which form an axially downward-facing contact surface which is configured to contact a corresponding contact surface of the lid 5. This prevents the adapter unit 10 from falling into the pot.

[0072] The receiving section 14 has axially upwardly and circumferentially extending protrusions which form the radial boundary of the receiving section 14. Furthermore, a rubber coating 18 is arranged and designed to seal the adapter unit 10 relative to the first penetration part 9 of the lid. This abuts against the insertion section of the lid 5.

[0073] In order to better connect the other end of the vacuum hose to the adapter unit 10, this other end of the vacuum hose is connected to a connecting part 20 which can be inserted into the adapter unit 10.

[0074] The connecting part 20 is rotationally symmetric 21 with respect to the adapter unit 10 and has an upper second termination element 22 with a third penetration part 23, wherein the third penetration part 23 is fluidly connected to the vacuum hose 8 via a tubular connection 24. The penetration part 23 has a funnel-shaped profile in cross-section and effectively forms the suction opening of the vacuum hose 8.

[0075] The connecting part 20 has a sealing mechanism 25 which contacts the receiving section 14 and circumferentially encloses the elastic element 16. The sealing mechanism is preferably rubber-like and is arranged at at least one axial end of the connecting part 20 such that the sealing mechanism contacts the top of the adapter unit and surrounds the elastic element 16.

[0076] Regarding the function:

[0077] Insert the pot into the receiving area of the base unit and close it with a lid, where the lid is preferably locked by locking means. The lid 5 seals the pot 4 with a circumferential seal 35.

[0078] The adapter unit 10 is inserted into the opening 9 of the lid 5. The connecting part 20 is then inserted or placed on the receiving section of the adapter unit.

[0079] When the vacuum pump is switched on, the rubber-coated section 25 is firmly pressed into the receiving section by the resulting vacuum, so that the connecting part 20 is closely located on the termination element 13 of the adapter unit 10.

[0080] The negative pressure causes the elastic element 16 to open the penetration part 15, thereby forming a flow channel that fluidly connects the space of the pot 4 with the vacuum hose 8, so that the fluid, especially air, in the pot 4 can be pumped out.

[0081] When the evacuation is completed, the elastic element 16 keeps the second penetration part 15 sealed to maintain the vacuum in the pot 4. Once the evacuation is completed, the connecting part 20 is released and can be removed.

[0082] Now the food processor 1 can be operated to prepare food under vacuum or at a vacuum level. After the food has been prepared, the pressure can be equalized, i.e., the pot can be ventilated by pressing the elastic element.

[0083] Figure 2 The adapter unit described in can also be used for the container 50 in a similar manner. The function of evacuating the fluid is the same.

[0084] Figure 3 Is shown Figure 1 A cross-sectional view and other views of the food processor 1. In particular, it shows how the vacuum equipment 6 and the evacuation unit 7 are integrated into the base unit.

[0085] The detailed view B shows an enlarged cross-sectional view of the connection of the container lid 60, the adapter unit for the container lid, and the connecting part 20. The adapter unit 10 can be integrated into the container lid and has the same features as the above-mentioned adapter unit 10, so reference can be made to Figure 2 The design in.

[0086] The detailed view C shows an enlarged cross-sectional view of the sealing area between the container 50 and the container lid 60. The container lid 60 is sealed relative to the container 50 with a circumferential sealing ring that extends in a circumferential groove of the lid section.

[0087] Figure 4Another view of the lid 5 is shown. A ring-shaped catch is provided on the lower side of the lid handle, which catch corresponds, for example, to a locking device integrated in the handle.

[0088] Figure 5 shows Figure 2 a cross-sectional view and other views of the adapter unit 10. Reference may also be made in particular to the explanation in Figure 2 .

[0089] Figure 6 shows Figure 1 , Figure 2 and Figure 3 a cross-sectional view and other views of the connecting part. The tapered section 26 is particularly easily recognizable. The tapered section 26 facilitates insertion into the adapter unit 10 and enlarges the adjacent outer surface in order to increase the sealing effect. The connecting part 20 is preferably designed as a plug, the outer surface of which is preferably coated with rubber on the inside and outside. Reference may also be made in particular to the explanation in Figure 2 .

[0090] Figure 7 and Figure 8 Another view of the container 50 and the container lid 60 is shown. Figure 7 The elastic element 62 is also shown in , which elastic element has the same function as the elastic element 16. Reference may also be made to the explanations in Figure 1 and Figure 3 .

[0091] FIG. 13 schematically shows a method 100 for operating a Figure 1 multi-purpose kitchen appliance 1. The method comprises the following steps:

[0092] - obtaining 101 pressure data related to the position in the pan 4; and

[0093] - operating 102 the vacuum equipment to evacuate fluid from the pan 4 based on the pressure data in the pan 4.

[0094] Within the scope of the appended claims and the drawings, other embodiments of the invention will become apparent to those skilled in the art.

Claims

1. A multi-purpose kitchen appliance (1), in particular a multi-purpose kitchen appliance having a base unit (3) and a preparation container (2) which can be connected to the base unit, wherein, The preparation container (2) has at least one pot (4) and a lid (5) closing the opening of the pot (4), wherein the vacuum equipment (6) integrated in the base unit (3) or connected to the base unit (3) has at least one evacuation unit (7) and a connection element (8), wherein a first penetration part (9) is formed in the pot (4) or in the lid (5), and the connection element (8) is arranged to fluidly connect the evacuation unit (7) to the penetration part (9) to evacuate the pot (4).

2. The multi-purpose kitchen utensil (1) according to claim 1, wherein, The connection element is designed as a vacuum hose (8).

3. The multi-purpose kitchen utensil (1) according to claim 1 or 2, wherein, The sensing device is arranged and configured to sense pressure data with respect to the position of the pot (4).

4. The multi-purpose kitchen appliance (1) according to claims 1 to 3, wherein, The control unit is arranged to operate the vacuum equipment (6) based on the pressure data.

5. The multi-purpose kitchen appliance (1) according to any one of claims 3 or 4, wherein, The control unit is arranged to determine an output pressure based on the pressure data (211) and operate the vacuum equipment (6) to adjust the pressure to a set point.

6. The multi-purpose kitchen utensil (1) according to any one of claims 1 to 5, wherein, The penetration part (9) is formed by an opening in the lid (5), and an adapter unit (10) is inserted into the opening of the lid (4), wherein the adapter unit (10) is arranged to be connected to the connection element (8).

7. The multi-purpose kitchen appliance (1) according to claim 6, wherein the adapter unit comprises: - a base body (11) which is inserted into the first penetration part (9) formed by the opening of the lid (5) by means of a lower opening end (12), - a first termination element (13) which terminates the base body (11) at its upper axial end, and a receiving section (14) for receiving the connection element (8) is formed on the upper side of the first termination element; - wherein the first termination element (13) has a second penetration part (15) in the receiving section (14) and an elastic element (16) arranged in the second penetration part (15), the elastic element being arranged to seal the second penetration part (15) in at least a first use state and to open the second penetration part (15) in at least a second use state.

8. The multi-purpose kitchen appliance according to claim 5, wherein, The elastic element (16) is a rubber seal which is designed as a one-way valve, and the one-way valve preferably allows a ventilation process by manually applying a force by the user.

9. The multi-purpose kitchen appliance according to claim 7 or 8, wherein the adapter unit (10) has a protrusion (17) which extends radially outwards at a circumferential section and is arranged in the circumferential direction, and forms an axially downward-facing contact surface which is arranged to contact a corresponding contact surface of the lid (5).

10. The multi-purpose kitchen utensil according to any one of claims 7 to 9, wherein, The receiving part (14) comprises a protrusion extending axially upwards and circumferentially surrounding, and the protrusion forms a radial boundary of the receiving part (14).

11. The multi-purpose kitchen utensil according to any one of claims 7 to 9, wherein, A first sealing mechanism (18) is arranged and configured to seal the adapter unit (10) with respect to the first penetration part (9) of the lid.

12. The multi-purpose kitchen appliance according to one of claims 7 to 11, wherein, The adapter unit (10) further includes a connection member (20), wherein the connection member (20) is in particular rotationally symmetric (21) and has an upper second termination element (22) with a third penetration (23), and the third penetration (23) can be connected to the connection element (8) via a connection piece (24).

13. The multi-purpose kitchen utensil according to claim 12, wherein, The connection member (20) includes a second sealing mechanism (25), which can come into contact with the receiving portion (14) and enclose the elastic element (16) in the circumferential direction.

14. The multi-purpose kitchen utensil according to claim 13, wherein, The lid (5) closes the pot (4), and the connection member (20) connected to the connection element (8) is inserted into the receiving portion (14) such that the second sealing mechanism (25) contacts the upper side of the first termination element (13), so that during evacuation of the pot (4) by the evacuation unit, - the sealing mechanism (25) of the connection member (20) is sucked or pressed into the receiving section (14), whereby the connection member (20) is tightly closed, and - the elastic element (16) opens the penetration (15) such that a flow channel is formed that fluidly connects the space of the pot (4) to the connection element (8), so that the fluid present in the pot (4) can be pumped out.

15. The multi-purpose kitchen utensil according to claim 14, wherein, When the evacuation is completed, the elastic element (16) seals the second penetration (15) to maintain the vacuum in the pot (4).

16. The multi-purpose kitchen appliance according to claim 14 or 15, wherein, The termination of the evacuation releases the connection member (20) for removal from the receiving section (14).

17. An adapter unit (10) for a lid (5) of a multi-purpose kitchen appliance (1), the adapter unit comprising: - a base body (11) that can be inserted into a first penetration (9) of a lid (5) of a pot (4) using a lower open end (12), - a termination element (13) that terminates the base body (11) at its upper axial end, and a receiving section (14) for receiving a connection element (8) is formed on the upper side of the termination element; - wherein the termination element (13) has a second penetration (15) in the receiving section (14) and an elastic element (16) arranged in the second penetration (15), and the elastic element is arranged to seal the penetration (15) in at least a first use state and to open the penetration (15) in at least a second use state.

18. The adapter unit according to claim 17, wherein, The adapter unit (10) further forms at least one of the features according to claims 8 to 13.

19. A method of operating a multi-purpose kitchen appliance (100), the multi-purpose kitchen appliance comprising a preparation container having a pot and a lid, a base unit, and vacuum equipment configured to evacuate the pot, wherein, The method includes: - acquiring (101) pressure data related to a position in the pot (4), - operating (102) the vacuum equipment according to the pressure data in the pot (4) to evacuate fluid from the pot (4).

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