EP2538144A1 - Cooking device with telescopic rail - Google Patents

Abstract

The device has a carrier moved on an extension (100) i.e. telescopic extension (120), between insertion position and drawing position (102). The telescopic extension comprises a rail (103) attached to a cooking chamber, and another rail (104) movably arranged toward the former rail, and an automatic feeding device (105). The automatic feeding device comprises a spring (106) i.e. tension spring (108), and another spring (107) such as damping spring (109) i.e. wire rope pressure spring (110), where force effects of the springs are aligned opposite to each other.

Description

The present invention relates to a cooking appliance having a cooking chamber, a door closing the cooking chamber and an extractor for use in a heatable cooking chamber.

In the field of household appliances, especially in cooking appliances, great importance is attached to the greatest possible comfort for a user in the development. In this case, a user should be supported as well as possible in the preparation of food by the cooking appliance, for example. For this purpose, among other things, automatic programs may be provided which allow easy operation of the device. But the ergonomic arrangement of a cooking appliance can be taken into account when planning a kitchen to make the cooking or loading a cooking appliance as pleasant as possible.

In order to further facilitate a user, for example, the loading of the cooking chamber of a cooking appliance, various systems have become known, for example, to easily and safely transport a baking sheet into the cooking chamber.

For this purpose, for example, the insertion system for the baking trays may be attached to a door that is designed similar to a drawer. In this design, a user can simply open the door like a drawer by pulling it out, place the sheet metal in the desired level and close the drawer door again.

Telescopic rail systems for easy loading of the cooking chamber have become known. In this case, the left and the right rail of a cooking plane can be pulled out to a certain extent from the cooking chamber, whereby, for example, a sheet can be easily placed on these rails. The telescopic rails can then be easily reinserted with the sheet in the oven.

A disadvantage of the systems described above, however, is that the insertion of the sheet may take place so quickly or uncontrollably that food can spill over, for example, or in the worst case, damage to the device may occur. Also, the baking sheet can be pushed by a very rough insertion of the rear wall of the cooking chamber, which can cause unpleasant noise.

To avoid this, the use of self-closing may be advantageous. In some embodiments, it is then sufficient to insert the drawer or a telescopic rail only to a certain extent by hand in the cooking chamber. The complete collection takes place, as with drawers or doors of, for example, kitchen furniture already known automatically. Such a self-closing increases the ease of use for a user.

However, it also makes sense here to dampen the retraction, in order to avoid over-sloshing or too rough pulling. For this damping system with oil pressure dampers have become known, which can reliably and effectively dampen a self-closing.

For the field of cooking appliances, however, these dampers must be designed for the temperatures prevailing when cooking food. Since very high temperatures are already present in normal cooking operation and, for example, temperatures of around 500 ° C. can be reached in a pyrolysis operation, the known oil pressure dampers are not suitable for cooking appliances, in particular not for cooking appliances with a pyrolysis function. A self-feeder with a conventional oil pressure damper is often no longer suitable even at temperatures above 100 ° C, since the necessary seals and the plastics used are usually not temperature-resistant.

It is therefore the object of the present invention to provide a cooking appliance which provides an extension system for easy loading of the cooking space, in which a damping of the self-closing is ensured effectively and permanently, even at high temperatures.

This object is achieved by a cooking appliance with the features of claim 1 and an extract with the features of claim 10. Further embodiments will be apparent from the dependent claims and the embodiment.

The cooking appliance according to the invention comprises at least one heatable cooking chamber and at least one door closing the cooking chamber. Furthermore, at least one drawer is provided on which at least one support, such as a grate, a sheet or a tub, can be moved between at least one inserted and at least one extended position. In this case, the drawer has at least one first rail fastened to the cooking chamber and at least one second rail movably arranged relative to the first rail. Further, at least one Selbsteinzugeinrichtung is provided, which comprises at least a first and at least one second spring whose force effects are aligned substantially opposite.

The cooking appliance according to the invention can be designed in particular as an oven, stove, microwave, steamer or combi appliance. In general, however, any other cooking appliance with a heated cooking chamber includes.

The extract can in particular be designed as a telescopic extension. It may also be advantageous to use more than two rails. In particular, to achieve a long extension distance, a plurality of telescopic rails may be provided. The design of the drawer as a drawer door can be useful and appropriate in certain embodiments.

The rails can communicate in different ways. A particularly suitable method is the use of a guide rail, which causes a mobility of the two rails to each other via balls.

Such ausgestaltetes cooking appliance offers many advantages. A significant advantage is that the self-closing device with two oppositely acting springs provides self-closing with reliable damping thanks to the special design of the self-closing device. In particular, this type of damping with the two springs is particularly well suited for use in cooking appliances, since the damping is ensured reliably and permanently, even at very high temperatures. Especially in the pyrolysis is achieved in the cooking a very high temperature level, which may be up to 500 ° C. The self-retraction device described above works well even at such temperatures.

In known damping systems with, for example, an oil pressure cylinder, in particular such a heat resistance is often not given, whereby a reliable damping in a hot cooking space - if any - can not be guaranteed permanently. This results for example from seals on the printing cylinder, which can become porous, whereby the necessary pressure is lost.

When pulling out the extract from the cooking chamber, the first spring is tensioned. When pushing back the extract in the oven this spring pulls the second rail back completely into the cooking chamber. Therefore, the first spring is preferably designed as a tension spring. Since the second spring is intended to dampen the force effect of the first spring in order to avoid too rapid or rough pulling in, the second spring is particularly preferably designed as a damping spring. It is expedient that the tension spring is selected so strong that it can overcome the force of the damping spring. Depending on the force difference between the two springs, there is a gradation in the damping.

The damping spring is formed in preferred embodiments as a wire rope compression spring. The design as a multi-wire spring, an effective damping effect can be achieved, the damping effect of the length and the strength of the wire rope spring depends.

The Selbsteinzugeinrichtung is preferably attached to the first rail. It is particularly expedient to arrange the Selbsteinzugeinrichtung in the first rail.

As a result, the retraction device can be installed in a space-saving manner and is accommodated against contamination of, for example, fumes or other contaminants. The second rail would cover the Selbsteinggeinrichtung from above in such embodiments.

For tensioning the first spring, the self-retraction device in preferred embodiments comprises a guide device. This can be moved in particular along the pull-in or extension direction of the second rail.

It is further preferred that the first spring is connected at a first end to a stationary part of the self-closing device and at a second end to the guide device. As a result, the guide device, when this is moved, tension the first spring.

The method of the guide device and thus the tensioning of the first spring takes place automatically when the second rail is pulled out of the cooking chamber. For this purpose, a driver is preferably associated with the second rail, which is suitable and adapted to engage in the guide device.

When the first spring is sufficiently tensioned, or when the guide device has reached a predetermined position, the driver is released from the engagement point on the guide device and the guide device engages in a latching device of the self-retraction device. This kept the first spring in the tensioned state.

If the movable rail is pushed back into the cooking chamber, the driver engages again after a predetermined distance in the point of engagement with the guide means, whereby the guide means is released again from the locking device. The tensioned first spring contracts and thereby pulls the movable rail back into the cooking chamber.

In order to dampen the tensile effect of the tensioned first spring, a contact device is provided in further preferred embodiments on the guide device. This is at least in the retracted position of the second rail with the second spring in operative connection. As a result, the retraction movement of the first spring is effectively damped by the opposite action of the second spring.

The extract according to the invention is intended in particular for use in a heated cooking chamber of a cooking appliance and serves to at least one carrier take. The carrier, for example a grate or a sheet, can be moved on the extension between at least one inserted and at least one extended position. In the mounted state, the drawer comprises at least one first stationary rail and at least one second rail movably arranged relative to the first rail. At least one self-retraction device is provided, which comprises at least one first and at least one second spring whose force effects are aligned substantially opposite.

The extract of the invention also offers many advantages. A significant advantage is that a comfortable way to load the cooking chamber is provided by the extract with self-retracting means a user. A carrier can be easily and safely placed on the pulled-out. By a slight insertion of the extract in the oven, the Selbsteingegeinrichtung is activated, which moves the extended rail in the retracted position. Too rough feeding, which can cause unpleasant noise, contamination by overflowing food or even damage to the cooking appliance is realized by the use of special damping system.

Through the use of two springs whose force is directed substantially opposite, a self-closing with damping is provided, which works reliably and permanently even at very high temperatures.

In preferred embodiments, the first spring is designed as a tension spring and the second spring as a damping spring.

Further advantages and features of the present invention will become apparent from the embodiment, which will be explained below with reference to the accompanying figures.

Fig. 1

eine perspektivische Ansicht eines Gargeräts als Einzelgerät in einer stark schematischen Darstellung;

Fig. 2

eine perspektivische Ansicht eines Gargeräts als Einbaugerät in einer stark schematischen Ansicht;

Fig. 3

ein Teleskopauszug im eingeschobenen Zustand mit einer erfindungsgemäßen Selbsteinzugeinrichtung in stark schematischer Darstellung;

Fig. 4

ein Teleskopauszug im ausgezogenen Zustand mit einer erfindungsgemäßen Selbsteinzugeinrichtung in stark schematischer Darstellung;

Fig. 5

ein Teleskopauszug im eingeschobenen Zustand mit einer schematischen Darstellung der erfindungsgemäßen Selbsteinzugeinrichtung im Inneren des Teleskopauszugs;

Fig. 6

ein Teleskopauszug gemäß Figur 5 im ausgezogenen Zustand;

Fig. 7

ein Teleskopauszug im eingeschobenen Zustand mit einer schematischen Darstellung einer anderen Ausführungsform einer erfindungsgemäßen Selbsteinzugeinrichtung im Inneren des Teleskopauszugs;

Fig. 8

ein Teleskopauszug gemäß Figur 7 im ausgezogenen Zustand.

In the figures show:

Fig. 1

a perspective view of a cooking appliance as a single unit in a highly schematic representation;

Fig. 2

a perspective view of a cooking appliance as a built-in appliance in a highly schematic view;

Fig. 3

a telescopic extension in the inserted state with a Selbsteinzugeinrichtung invention in a highly schematic representation;

Fig. 4

a telescopic extension in the extended state with a Selbsteinzugeinrichtung invention in a highly schematic representation;

Fig. 5

a telescopic extension in the inserted state with a schematic representation of the invention Selbsteinzugeinrichtung inside the telescopic extension;

Fig. 6

a telescopic extension according to FIG. 5 in the extended state;

Fig. 7

a telescopic extension in the inserted state with a schematic representation of another embodiment of a Selbsteinzugeinrichtung invention inside the telescopic extension;

Fig. 8

a telescopic extension according to FIG. 7 in the extended state.

In FIG. 1 a cooking appliance 1 according to the invention is shown very schematically in a perspective view, which is designed here as a hearth 50 or as a standalone unit. The cooking appliance 1 has a housing 5, on which a cooking chamber 2 is provided, which can be closed by a door 3. When the door 3 is open, a food can be introduced into the cooking chamber 2. In the cooking chamber 2, the food can then be cooked by means of a heating source 6. For this purpose, in particular the use of, for example, top and / or bottom heat, a convection or a grill function is suitable. A heating source 6 is in FIG. 1 but not shown.

On the stove 50, a hob 7 is arranged, which is divided into several cooking zones 8. You can make the desired settings for cooking over some controls 9 on a control panel 10. The control panel 10 may also include a display device 11 such as a display 12, on which the current state of the cooking appliance 1 and the set values can be displayed.

Through the viewing window 13 in the door 3 can be seen a receiving device 14 for receiving from a support 4. The receiving device 14 is disposed on the left side wall 16 of the cooking chamber 2 and formed in the embodiment shown here as a telescopic extension 120. Other receiving devices 14, in particular movable receiving devices 14, can be used meaningfully.

Of the four existing garden levels 15 only three levels 15 are visible through the viewing window 13. When the door 3 is opened, it is possible to extend the drawer 100 in the desired cooking plane 15 in order to place a carrier, for example a sheet metal, a grate or a pan, easily and comfortably on the receiving device 14. The carrier 4 can then simply be pushed back into the cooking chamber 2 on the telescopic extension 120. This ensures a comfortable and also a very safe introduction of a carrier 4 in the cooking chamber 2.

In FIG. 2 is a cooking appliance 1 shown in a perspective view, which is designed here as a built-in oven 60 and is shown very schematically. On the housing 5 again a cooking chamber 2 is arranged, which is closed by a door 3. On the left side wall 16 of the cooking chamber 2 can be seen the receiving device 14, which is provided here by a telescopic extension 120 on four cooking levels 15 available.

The schematic view of an extract 100 according to the invention in the inserted position 101 is shown in FIG FIG. 3 shown. Such an extract 100 may, as in the embodiment shown here, comprise a first rail 103, which is received in a stationary manner on the cooking chamber 2. Movably arranged to the first rail 103, a second rail 104 is provided, which is movable for example on balls, which are not shown here, on the first rail 103. Also arrangements with more rails and other types of interaction between the rails can be used advantageously depending on the application.

For introducing a carrier into the cooking chamber 2 of a cooking appliance 1, such an extract 100 or at least the rail 104 can be pulled out of the cooking chamber 2. The carrier 4 is then placed on the solid rails 104 and can then be easily inserted into the cooking chamber 2.

So that a user can not push the carrier 4 on the telescopic extension 120 too quickly and / or too roughly into the cooking space 2, the use of a self-closing device 105 is advantageous. A user then has to insert the carrier 4 only a certain distance into the cooking chamber 2 until the self-closing 105 is activated and the carrier moves completely into the cooking chamber 2. In this type of collection then the use of a damper is provided to cushion the last piece. Thus, for example, a striking of the carrier 4 on the rear wall of the cooking chamber 2 can be avoided.

Part of the self-induction 105 is in FIG. 4 to see. In the figure, the telescopic extension 120 is shown in the extended position 102. At the right end of the first rail 103, a part of the self-closing device 105 can be seen. This is fastened to the lower rail 103 in the exemplary embodiment shown here. More specifically, the self-feeding device 105 is disposed in the lower rail 103. However, only a part of the housing 121 of the self-closing device 105 and a part of the first spring 106 can be seen. Other arrangements of the self-closing device 105 may also be advantageous, depending on the embodiment. When using more than two rails 103, 104, the use of multiple self-closing devices 105 may also be provided.

A more detailed illustration of the Selbsteinggeinrichtung 105 is in the Figures 5 and 6 shown. In this case, the entire device 105 is arranged in advantageous embodiments in a separate housing 121. Thus, the self-feeding device 105 can be easily mounted and even under certain circumstances can be easily retrofitted. The Selbsteinggeinrichtung 105 is included in the example shown here in the lower rail 103 and is also covered by the upper rail 104 when it is in the retracted position 101.

The mechanism of action of the self-closing device 105 consists of a first spring 106, which is designed as a tension spring 108. On a stationary part 115 of the self-closing device 105, a first end 114 of this spring 106 is attached. The spring 106 extends to the guide means 111 and is connected at a second end 116 thereto.

The first spring 106 is in FIG. 5 shown in a relaxed state. In a recess 122 on the guide device 111 engages the second rail 104 associated driver. If the rail 104 is pulled out, the driver 117 pulls the guide device 111, whereby the first spring 106 of the self-closing device 105 is tensioned. At a predetermined position, the guide device 111 engages in a latching device 118 on the self-closing device 105 and the driver 117 leaves the recess 122. The rail 104 can then be pulled out completely.

In FIG. 6 the tensioned state of Selbsteinggeinrichtung 105 is shown. To retract the rail 104, this is pushed in the direction of the cooking chamber 2. As soon as the driver 117 engages again in the recess 122 of the guide device, it releases from the latching device 118, whereby the preloaded spring 106, which is designed as a tension spring 108, contracts. By the engagement of the driver 117 in the Selbsteinzugeinrichtung 105, the rail 104 is automatically retracted by the tension spring 108 in the cooking chamber 2.

In order to avoid a too rapid and / or rough insertion or retraction of the rail 104, a damping device 123 is provided, which is designed here as a damping spring 109 and the second spring 107 of the Selbsteinzugeinrichtung 105 represents. In this case, the damping spring 109 is preferably configured as a wire rope compression spring 110 or a multi-wire spring.

When the guide device 111 retracts, a contact device 119 assigned to the guide device 111 comes into contact with the second spring 107, as a result of which the retraction of the rail 104 is cushioned by the force of the first spring 106 by means of the damping spring 109. As a result, a damped self-closing 105 is provided. It is advantageous that the tension spring 108 has at least a slightly greater tensile force than the damping effect caused by the second spring 107. Otherwise, a complete retraction of the rail 104 could be prevented.

The FIGS. 7 and 8 show that already to the Figures 5 and 6 described mechanism of the attenuated Selbstbsteizugs a telescopic rail in a slightly modified embodiment.

It is further within the skill of one skilled in the art to modify the described embodiments in a manner not shown in order to achieve the effects described, without departing from the scope of the invention.

LIST OF REFERENCE NUMBERS

1

Cooking appliance

2

oven

3

door

4

carrier

5

casing

6

heating source

7

hob

8th

cooking zone

9

operating element

10

control panel

11

display

12

display

13

window

14

recording device

15

Garebene

16

Side wall

50

stove

60

oven

100

abstract

101

inserted position

102

extended position

103

first rail

104

second rail

105

Self-closing device

106

first spring

107

second spring

108

mainspring

109

damping spring

110

Cable compression spring

111

guide means

112

Feeding direction

113

extraction direction

114

first end

115

stationary part of the self-closing device

116

second end

117

takeaway

118

locking device

119

contactor

120

telescopic extension

121

casing

122

recess

123

attenuator

Claims (11)

Cooking appliance (1) with at least one heatable cooking chamber (2), with at least one door (3) closing the cooking chamber (2) and with at least one drawer (100) on which at least one carrier (4) is inserted between at least one inserted (101) and at least one extended position (102) is movable, wherein the extract (100) comprises at least one of the cooking chamber (2) fixed first rail (103) and at least one to the first rail (103) movably arranged second rail (104) and has at least one self-feeding device (105),
characterized,
in that the self-retraction device (105) comprises at least one first spring (106) and at least one second spring (107), the force effects of which are oriented essentially in the opposite direction. Cooking appliance (1) according to claim 1,
characterized,
that the first spring (106) is designed as a tension spring (108) and the second spring (107) as a damping spring (109). Cooking appliance (1) according to claim 2,
characterized,
in that the damping spring (109) is designed as a wire-rope compression spring (110) (multi-wire spring). Cooking appliance (1) according to one of the preceding claims,
characterized,
in that the self-feeding device (105) is fastened to the first rail (103). Cooking appliance (1) according to one of the preceding claims,
characterized,
in that the self-retraction device (105) comprises a guide device (111) which can be moved along the feed direction (112) or the pull-out direction (113) of the second rail (104). Cooking appliance (1) according to claim 5,
characterized,
in that the first spring (103) is connected to a first end (114) on a fixed part (115) of the self-closing device (105) and to a second end (116) on the guide device (111). Cooking appliance (1) according to one of the preceding claims,
characterized,
that the second rail (104) is associated with a driver (117) which is suitable and adapted to engage in the guide device (111). Cooking appliance (1) according to one of claims 5 to 7,
characterized,
in that the self-retraction device (105) comprises a locking device (118) in which the guide device (111) engages. Cooking appliance (1) according to one of claims 5 to 8,
characterized,
that a contact means (119) is provided on the guide device (111), at least in the inserted position (101) of the second rail (104) with the second spring (107) is in operative connection. Extractor (100), in particular for use in a heated cooking chamber (2) of a cooking appliance (1), on which at least one carrier (4) is movable between at least one inserted position (101) and at least one extended position (102), wherein the Extract (100) at least one first rail (103) and at least one to the first rail (103) movably arranged second rail (104) and at least one Selbsteinzugeinrichtung (105), characterized
in that the self-retraction device (105) comprises at least one first spring (106) and at least one second spring (107), the force effects of which are oriented essentially in the opposite direction. An extract (100) according to claim 10,
characterized,
that the first spring (106) is designed as a tension spring (108) and the second spring (107) as a damping spring (109).

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