DE202012104006U1 - Cooking appliance with filling opening for cleaning fluid and system consisting of container and cooking appliance - Google Patents

Abstract

Cooking appliance with at least one filling opening for filling cleaning liquid into the interior of the cooking appliance or into a tank (22) via a first line (20), the filling opening (18) being designed such that at least part of a container can be inserted into the filling opening (18) characterized in that at least one piercing element is arranged within the filling opening (18) such that when the at least part of the container is introduced into the filling opening (18), a closure element arranged on the container can be pierced in such a way that cleaning liquid located in the container flows into the interior of the cooking appliance or into the tank (22) immediately after being punctured.

Description

The invention relates to a cooking appliance with filling opening for cleaning fluid and a system comprising a container for cleaning fluid and cooking appliance. It also allows the implementation of a method for filling a cooking appliance with cleaning fluid. Cooking appliances are in particular ovens, proofing cabinets and other devices suitable for bakery operations for storing and treating foodstuffs.

From the EP 1 478 886 B1 For example, a method for cleaning the interior of a cooking appliance is known in which tabs are used as cleaning agents. Before each cleaning process, a cleaning rod must be placed in a designated container. A disadvantage of the use of cleaning rod is that before each cleaning process, a separate operation is required to position the detergent in the cooking appliance. Furthermore, cleaning bars have the disadvantage that their degree of dissolution depends on several factors, in particular on the water temperature, time and the water flow acting on the cleaning bar. If only one of these factors varies, this can lead to the cleaning bar not dissolving completely and residues remaining in the cooking chamber. This must be avoided, especially in the commercial sector.

From the EP 2 229 852 B1 a system for cleaning a cooking device is known, in which water from a water distribution network via a first supply circuit and detergent from a tank via a second supply circuit are first fed to a mixing unit, wherein the mixture of water and detergent is then added via a supply line into the cooking chamber , To fill the tank are the EP 2 229 852 B1 no specific information can be found.

From the pamphlets DE 10 2010 017 177 A1 and EP 2 389 808 A1 are means for heat treatment of food with a mobile tank device known. The refueling device comprises a wastewater tank mounted on a movable floor support, which is positioned in a sub-cabinet and easily moved. In the facilities also detergent tanks are provided, which can be refilled via lines. As the filling of the detergent tank runs in detail, the pamphlets can not be found.

The invention has for its object to provide a cooking appliance with a filling opening for cleaning fluid and a system of a cooking appliance with a container for cleaning fluid available that allow a clean and secure filling.

The object is achieved according to the invention by the features of claims 1 and 10, respectively.

An inventive cooking appliance has at least one filling opening for filling cleaning liquid via a first line into the cooking appliance interior or into a tank. The filling opening is designed such that at least part of a container is insertable into the filling opening, wherein within the filling at least one piercing element is arranged such that upon insertion of the at least one part of the container into the filling opening a closure element arranged on the container is pierceable in that the cleaning liquid present in the container flows into the cooking appliance interior or into the tank immediately after piercing. In the context of the invention, a closure element is understood as meaning membranes, films and other pierceable elements which, on the one hand, are suitable for tightly sealing a container and, on the other hand, being severed by a piercing element arranged in a filling opening. The dimensioning of the closure element may vary, in particular depending on the design of the piercing element and of the force normally applied during insertion of the container into the filling opening. This force, in turn, depends inter alia on the size and the resulting dead weight of the full container and the angle of the filling, in which the container is introduced. The greater the weight of the container and the farther the filling opening is oriented in the direction of gravitational force, the greater the force that a container filled with cleaning liquid already exerts on the piercing element due to its own weight. In the present case, cleaning liquids are understood to mean all cleaning liquids, including descaler, rinse aid and other liquids suitable for cleaning cooking appliances.

The cooking appliance according to the invention has the advantage that a container closed with a closure element with cleaning liquid can be introduced into the filling opening so that the cleaning liquid in the container exits only and only from the container when the piercing element has pierced the closure element. In this case, the piercing element is preferably arranged so that escaping cleaning liquid runs exclusively through the filling opening into the cooking appliance. This ensures that no cleaning liquid is spilled before filling the cleaning liquid and In particular, no cleaning liquid undesirably comes into direct contact with filling personnel, food or with the food interior.

In a practical embodiment, the push-through element has at least one element for detachable fastening in the region of the filling opening and / or at least one element for releasably fastening the piercing element is arranged on the cooking device in the region of the filling opening.

Suitable are all known non-positive and / or positive connection techniques, in particular a screw, a plug connection or a bayonet closure. The above-mentioned connection form has the advantage that the piercing element can be easily removed from the filling opening for cleaning or replacement purposes and can be connected to it again. This ensures a long-term functionality.

In a further practical embodiment, a filter element is arranged in the region of the filling opening to ensure that no dirt particles or other solids pass through the filling opening into the cooking appliance interior or the tank of the cooking appliance. The filter element is preferably arranged in the piercing element or below the piercing element. It may also be integrally formed on the piercing element.

In a particularly secure embodiment, the filling opening, the piercing element and / or the filter element are designed such that the filter element can be fixed in the filling opening by means of the piercing element. For this purpose, a geometric design can be provided on the piercing element itself, which makes it possible to fit the filter element in this. Such a geometric configuration may for example be a recess into which the complementarily formed filter element is inserted from above or from below or inserted from the side. Alternatively, a geometric configuration can also be provided on the housing in order to fit the filter element as described above. Finally, the filter element can also be positioned on a stop in the region of the filling opening in order to clamp it by means of the puncturing element arranged above it. This can be done for example by screwing the piercing element into the filling opening.

In a further practical embodiment, the piercing element is designed as an annular mandrel. As an annular mandrel in the present invention, both those designs are referred to, in which the ring is closed, as well as those in which a plurality of piercing elements on a round, d. H. circular, oval or otherwise shaped, in particular arcuate, web are arranged, even if there is a free space between the individual piercing elements. Also possible, for example, designs with polygonal geometry. It is important that the mandrel is adapted to open the closure element over a large area, so that the cleaning liquid can flow out of the container quickly after piercing as possible without further action. Preferably, a closed ring (eg, a circular or polygonal ring) is used because in this case the membrane displaces outwardly from the mandrel during piercing. The mandrel is preferably designed in a further practical embodiment so that the closure element is torn, but not completely separated from the container.

If the piercing element or the piercing elements have or have a distance of at least 1 mm from the inner boundary wall of the filling opening on their outer sides, enough space remains to be positioned around the wall of a container between the inner wall of the filling opening and the piercing elements for filling. Preferably, the distance is 1 mm to 10 mm, more preferably 2 mm to 5 mm.

In a further preferred embodiment, the filling opening has at least one compensating opening leading through the piercing element. This may be, for example, one or more compensation openings arranged in the peripheral wall of the piercing element, which - possibly via one or more channels - lead to a second line (bypass). With such a compensating opening, the risk can be reduced that, in the case of a container positioned on a push-through element, such a high pressure forms in the short term that a return flow of cleaning liquid forms and thus cleaning liquid can splash out or drip out of the filling opening. Compensation openings therefore favor a fast, continuous and safe inflow of cleaning fluid.

The piercing element can be produced in a particularly inexpensive and simple one-piece manner. Suitable materials are not only plastics, but in particular also metallic materials, since these are particularly temperature resistant and can be cleaned very good germicidal by exposure to high temperatures.

In a further practical embodiment, the piercing element has a sharp-edged design on the side facing the outside of the cooking appliance, in order to minimize the force required for the piercing process. In this case it is preferred for safety reasons, if the diameter of the filling opening is smaller than the width of a hand and sharp-edged elements are so worthwhile located away from the outer edge of the filling that they are not accessible by hand from the outside. For example, for this purpose, a dimension smaller than 5 cm (preferably smaller than 3 cm) and the distance to the outer edge of the filling opening greater than 5 cm (preferably greater than 10 cm) can be selected as the diameter of the filling opening.

Preferably, the level of the tank is monitored by a sensor. This sensor ensures that always at least one Nachfüllbehältervolumen can be filled, z. B by a display, LED, via a control of a flap etc. Thus, it can be ensured that - in compliance with the instructions of the display, LED, etc. - the tank is not overfilled or a not completely emptied container must be removed again from the filling.

The invention also relates to a system comprising a cooking appliance and a container, according to which the container in the region of the closure element is adapted to the geometry of the filling opening of the cooking appliance such that the internal dimensions (eg the diameter or the length and the width) a deviation of not more than 20 percent, preferably not more than 15 percent and more preferably not more than 10 percent, of the outer dimensions of the piercing element, so that the container is guided during the piercing of the closure element and during filling of the piercing element. In such a system, the container can simply be pushed so far into the filling opening until the closure element is pierced. Then, the container is positioned due to the geometric configuration of the piercing element. It can then be released, for example, to perform other activities. After emptying the container, it can be easily removed from the piercing element and recycled.

In a further practical embodiment, the tank of a cooking appliance according to the invention is provided with a venting device. As a result, the time for the inflow of cleaning fluid can be considerably shortened.

• a) mindestens teilweises Einführen eines Flaschenhalses oder eines sonstigen Behältnisses in eine Befüllöffnung eines Gargerätes nach einem der vorstehenden Ansprüche, bis das Durchstoßelement das Verschlusselement durchstoßen hat,
• b) Entleeren des Behältnisses, vorzugsweise vollständig.

The invention also makes it possible to carry out a method for filling cleaning liquid in a tank of a cooking appliance or a cooking appliance interior with the following method steps:

• a) at least partially inserting a bottle neck or other container into a filling opening of a cooking appliance according to one of the preceding claims, until the piercing element has pierced the closure element,
• b) emptying the container, preferably completely.

The advantages already described in connection with the cooking appliance according to the invention are hereby referred to.

Unless stated otherwise and not technically excluded, all technical features described above can be combined with one another as desired.

Further practical embodiments and advantages of the invention are described below in conjunction with the drawings. Show it:

1 a part of an oven housing with covered filling opening in a front view,

2 this in 1 shown oven cabinet with the side wall removed in a view from the right,

3 one in the in the 1 and 2 shown oven element usable element for forming a filling opening according to the invention in a side view,

4 one in the in 3 element shown screwed puncture element in a view obliquely from above

5 this in 3 element shown with the in 4 shown inserted piercing element in a view from above,

6 the elements off 5 in a view diagonally from the side,

7 this in 3 shown, with the front panel of in 1 shown baking oven housing screwed element,

8th the in 2 marked with VIII area in an enlarged view of obliquely behind and

9 a part of an oven housing with a filling opening and a bottle inserted in the filling opening.

The 1 and 2 show a part of a baking oven 10 with a front plate 12 , With the front panel 12 is a cover plate 14 screwed. At the cover sheet 14 is a cap 16 attached, the release of a filling opening 18 is laterally pivotable. Neither the cover sheet 14 still the cap 16 are mandatory.

As in 2 can be seen leads the filling opening 18 via a first line 20 to a tank arranged in the area of the floor 22 , As a leader 20 is used in the embodiment shown, a hose, with the help of hose clamps at pipe ends of the filling 18 and the tank 22 is attached.

A second line 24 with a much smaller diameter also leads from the filler opening 18 to the tank 22 , The function of the second line 24 will be explained in more detail below.

Behind it is another line 25 (here: also a hose) arranged, which leads for venting from the tank vertically upwards. It has at its upper end at least one opening, which allows an air inlet and outlet at any time. It is further dimensioned so that leakage of the liquid from the tank in a conventional moving or moving or transport of the system is very unlikely or impossible. In the embodiment shown, the length of the further line 25 greater than 50 cm. The further line 25 can therefore be considered as a venting device.

The filling opening 18 is essentially formed by a primitive element 26 ( 3 ) that has a section 28 with an annular cross-section and a second section 30 having an annular cross-section, wherein the first section 28 has a larger outer diameter than the second portion 30 , To form the filling opening becomes the basic element 26 with the front of the case 12 of the oven 10 screwed. The basic element 26 can also have a different geometry inside and outside.

The inner area of the first section 28 serves to accommodate the in 4 shown piercing element 32 and the inclusion of a container, not shown in this figure, in particular a bottle or canister neck. The outer area of the second section 30 serves - as in 8th shown - as connection section for the first line 20 ,

That in the 4 and 7 Piercing element shown in detail 32 consists of a first section 34 with an annular cross-section and a second section 36 with circular cross-section.

As can be seen, the second section points 36 the piercing element 32 a larger outer diameter. Further, on the second section 36 an external thread 38 educated. About this external thread 38 becomes the puncture element 32 in the basic element 26 screwed. The corresponding internal thread in the basic element 26 starts at the in 7 to be recognized paragraph 40 within the filling opening 18 , Preferably, between the piercing element 32 and the primitive 26 arranged a filter element, not shown, for example by such a filter element by screwing the piercing element 32 in the basic element 26 is trapped. To screw in and unscrew the piercing element 32 To facilitate and to enable by means of a tool are two cutouts 54 in the transition area from the first section 34 the piercing element 32 to the second section 36 the piercing element 32 educated.

The first paragraph 34 the piercing element 32 has immediately adjacent to the transition region to the second section 36 distributed over the circumference several equalization holes 42 in the peripheral wall. These compensation holes 42 serve on the one hand, with a strong increase in pressure of the detergent in the container, not shown, and in the first line 20 to create a possibility for pressure equalization. This possibility will be discussed in detail below.

The 5 and 6 show the basic element 26 with screwed-in piercing element 32 , The four openings 44 with internal thread in the area of the front end serve to screw the basic element 26 with the front housing 12 of the oven 10 ,

As in 5 can be seen, the outside of the piercing element 32 in the first section from the inside 46 of the primitive at the top of the first section at a distance d. This distance d is dimensioned so that a container, in particular the neck of a bottle like the one in 9 illustrated bottle 48 , between the piercing element 32 and the inner wall of the filling opening 18 dips. Preferably, the inner diameter of the bottle neck is equal to or slightly larger than the outer diameter of the piercing element 32 , making the bottle smooth on the puncture element 32 postponed and fixed in deferred state in this position.

In 8th It is good to see that the transition area between the first section 28 and the second section 30 of the primitive 26 as a sharp-edged heel 50 is trained. At the in the installed state of the basic element 26 deepest Place of the paragraph is the second line 24 connected.

Before describing in detail how the above-mentioned elements interact in a functional manner, it is still the design of the outside of the filling opening 18 facing end face of the piercing element 32 Referenced. As in 4 can be seen, the end face is an annular mandrel 52 educated. In the present case, this is a closed ring whose outside is sharp-edged, by the connecting surface formed between the outer circumference and the inner circumference of the ring and the outer circumferential surface of the first section 34 the piercing element is formed an acute angle. This angle is preferably less than 45 °, particularly preferably less than 30 ° and more preferably less than 20 °.

The following describes how cleaning fluid comes out of a bottle 48 safely with a cooking appliance according to the invention in the tank 22 can be filled. Here comes a bottle 48 used, the opening in the region of the bottle neck with a pierceable closure element (not shown) is closed. The bottle 48 This is done first in the filling opening 18 introduced until the closure element to the annular mandrel 52 encounters. The bottle 48 is then - possibly under some increased application of force - moved further towards the filling, so that the annular mandrel 52 pierces the closure element. In this case, the closure element works over a large area to the side and makes it possible for the cleaning liquid in the bottle to pass through the inner peripheral wall of the piercing element 32 in the direction of the first line 20 to stream.

If the result of the outflow of the cleaning liquid pressure increase, which would lead to a recoil, this is counteracted in the short term by the fact that the cleaning fluid partially through the compensation openings 42 through the peripheral wall of the piercing element 32 in the area between the outer wall of the piercing element 32 and the inner wall of the base member 26 reach. From there, the fluid can continue to flow through unrecognizable channels to the second conduit 24 and about this too in the tank 22 reach.

LIST OF REFERENCE NUMBERS

10

oven

12

Frontblech

14

cover sheet

16

cap

18

filling

20

first line

22

tank

24

second line

25

another line

26

basic element

28

first section of the primitive

30

second section of the primitive

32

Piercing element

34

first section of the piercing element

36

second section of the piercing element

38

external thread

40

paragraph

42

compensation opening

44

openings

46

inside

48

bottle

50

paragraph

52

annular thorn

54

countersink

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 1478886 B1 [0002]
• EP 2229852 B1 [0003, 0003]
• DE 102010017177 A1 [0004]
• EP 2389808 A1 [0004]

Claims (10)

Cooking appliance with at least one filling opening for filling cleaning liquid via a first line ( 20 ) in the cooking appliance interior or in a tank ( 22 ), wherein the filling opening ( 18 ) is designed such that at least a part of a container in the filling opening ( 18 ) is insertable, characterized in that within the filling opening ( 18 ) at least one piercing element is arranged such that upon insertion of the at least one part of the container into the filling opening ( 18 ) a closure element arranged on the container is pierceable in such a way that cleaning liquid located in the container is immediately after being pierced into the cooking appliance interior or into the tank ( 22 ) flows in. Cooking appliance according to claim 1, characterized in that the piercing element ( 32 ) at least one element for releasable attachment in the region of the filling opening ( 18 ) and / or on the cooking appliance in the region of the filling opening ( 18 ) at least one element for releasable attachment of the piercing element ( 32 ) is arranged. Cooking appliance according to one or more of the preceding claims, characterized in that in the region of the filling opening ( 18 ) A filter element is arranged. Cooking appliance according to claim 3, characterized in that the filling opening ( 18 ), the puncture element ( 32 ) and / or the filter element are designed so that the filter element by means of the piercing element ( 32 ) in the filling opening ( 18 ) is fixable. Cooking appliance according to one or more of the preceding claims, characterized in that the piercing element ( 32 ) as an annular mandrel ( 52 ) is trained. Cooking appliance according to one or more of the preceding claims, characterized in that the piercing element ( 32 ) or the puncture elements ( 32 ) a distance d of at least 1 mm to the inner boundary wall of the filling opening ( 18 ). Cooking appliance according to one or more of the preceding claims, characterized in that the filling opening ( 18 ) at least one through the piercing element ( 32 ) leading compensation opening ( 42 ) having. Cooking appliance according to one or more of the preceding claims, characterized in that the side facing the outside of the cooking appliance is sharp-edged. Cooking appliance according to one or more of the preceding claims, characterized in that the tank is provided with a venting device. System comprising a cooking appliance according to one or more of the preceding claims and a container, characterized in that the container in the region of the closure element to the geometry of the filling ( 18 ) of the cooking appliance is adapted such that the internal dimensions of a deviation of not more than 20 percent of the external dimensions of the piercing element ( 32 ), so that the container during the piercing of the closure element and during filling of the puncture element ( 32 ) is guided.

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