CH642157A5 - Baking oven - Google Patents

Description

642157 2

PATENT CLAIMS exist, with a first mouth (51) to the baking chamber

1. Oven, with armature (13) present on the front, a second mouth (53) leads to the intermediate space (43), the board (4), which leads directly above a swing door and the third mouth (44) to the back of the oven (55 ) of the oven, which swiveling door is at the bottom, for taking fresh air (61) with it from the oven flaps and about a horizontal swivel axis for opening the back by means of the one flowing out of the baking chamber (13) the steam (58).

Steam exhaust duct (34, 19, 8. Oven according to claim 1, characterized in that

15, 16) for the vapors occurring in the baking chamber (13), the pivoting door (55) hinged at the bottom

the device (37-39) for controlling the operation of the oven in the left and upper air outlets (57) is provided for the flow through a drawer (2-7, 17), which has a vent from the bottom to the top with fresh air.

direction (9,10,34,14) with fan (18-21) for extracting the vapors contains which extraction device on the lower

Side of the drawer, an inlet opening (9) for the vapors to be extracted and an outlet opening (14) for the steam. The invention relates to an oven with a front-fe, and that when the drawer is open, the inlet side has an existing dashboard there is an opening (9) immediately above the front edge of the above a swing door of the oven, the closed swing door (55) and also hinged in front of the loading swing door below and lying around a horizontal opening (69), so that when there are gaps The pivoting door (55 ') leads the flow of the vapors out of the loading opening and, with an opening (69) above the loading opening, directly to the inlet opening (9), so that the steam exhaust duct for the Baking chamber occurring characterized in that in the drawer a gyroscopic steam, the device for controlling the oven blower (18-21) with vertically standing axis of rotation (21) is stored in a drawer which is a trigger that the centrifugal fan is partially surrounded by an insert part (26-32) with a fan for extracting the vapors, the insert part (26-32) in which the extraction device is located on the underside of the drawer level of the centrifugal blower (18-21), that the insertion part 25 has an entry opening for the vapors to be extracted and one (26-32) in the drawer (2-7, 17) is pulled out, Has outlet opening for the vapors, and that when the slide-in part is open, the device (37-39) for controlling the drawer carries the inlet opening immediately above the oven operation, and that the slide-in part has one of the front edges of the closed swing door and fresh air inlet (25). and has outlets (67), which is located in front of the loading opening, so that in the case of gap outlets (67) with the blower suction side (34) in connection 30 When the swing door opens, the flow of the vapors leads to constant flushing of the insert part with the loading opening leading directly to the inlet opening. Fresh air (65-67) during oven operation. In particular, the oven should be used as a built-in oven.

2. Oven according to claim 1, wherein can be formed between the baking.

space (13) and the drawer (2-7, 17) a horizontal, above It is intended, the aforementioned, proven baking

the space (43) extending the drawer width should be further improved. The task is

is the one that opens out into the open at the front, so that from the front you have to design the oven so that the control

Fresh air (63) can penetrate, whereby the inlet opening (9) can be kept as cool as possible, although the drawer which receives the drawer is provided with a filter (10), thereby characterizing the control device as closely as possible, that the drawer is on the top (17) one should be placed above the baking chamber to make one

Fresh air inlet (25) has to get the lowest possible height of the oven for the interior of the insert 40. If partly leads. the task has been solved, any kind of

3. Baking oven according to claim 1, characterized, desirable control device in the oven provided that a hen to the outlet opening (14) of the drawer (2-7, 17), as seen from the temperature no loading bellows line (15) connected which is necessary for a limitation. Since nowadays more and more electric chimney (16) leads, and that the drawer rear wall is provided with 45 tronic components for programmed control, an opening (12) for the electrical supply line can be used. 26-32). electronic components even with a very compact

4. Oven according to claim 1, characterized in that the construction of the oven can be used.

that the insertion part (26-32) is U-shaped in plan view, where- the oven according to the invention is thereby characterized

When the slide-in 5 is inserted into the drawer (2-7, 17), a centrifugal blower with a vertical part of the blower (18-21) standing in the U-shaped area of the axis of rotation is mounted in the drawer, so that the centrifugal blower lies away . is partially surrounded by an insertion part, the insertion

5. Baking oven according to claim 4, characterized in that the thrust part lies in the plane of the centrifugal blower, that the control device (37-39) for the baking oven is held in the drawer, which can be pulled out and which has niche components, with niche components the one leg insertion part carries the device for controlling the oven loading (35) of the U-shaped insertion part, a computer (37) and a drive, and that the insertion part fresh air inlets and power supply unit (38) and on the other leg (36) of the U- has formal outlets, the outlets being connected to the blower suction plug-in part of the power section (39) of the control device side for constant flushing of the (37-39). Insert part with fresh air during oven operation.

6. Oven according to claim 1, characterized in that an embodiment of the invention is shown schematically in the drawing, that the dashboard (4) of the drawer (2-7, 17) with the subject of the caption. Show it:

cited touch switches is provided. Fig. 1 shows a horizontal section through the upper part of the

7. The oven according to claim 2, wherein the baking space (13) baking oven, wherein the drawer is cut,

a constantly open steam passage (46) in its upper Fig. 2 is a vertical section through the upper part of the

Wall (45) which opens into the space (43), oven, and characterized in that between the steam through- Fig. 3 another vertical section through the upper passage (46) and the space (43) as a jet pump part of Oven.

Acting channel (48-53) with three mouths (44, 51, 53) From Figure 1 it can be seen that the oven has a side

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lie, outer jacket 1, in which there is a drawer with the walls 2 to 5, the front drawer wall being designed as a dashboard 4. The drawer has a bottom 6 on which rollers 7 are located. With the latter, the drawer can be moved horizontally on a blanket 8 between the two positions A and B shown in FIG. The drawer is provided on the underside with an inlet opening 9 which is filled by a grease filter 10. Furthermore, the underside of the drawer in the region of the two side walls 3 and 5 is provided with two stops 11, which lie congruently one behind the other in FIG. 3. The drawer rear wall 2 is provided with an opening 12 for the electrical power supply line, not shown, into the interior of the drawer. The aforementioned inlet opening 9 serves as an inlet for vapors to be extracted from the baking chamber 13.

The drawer then has an outlet opening 14 on the rear wall 2 for these vapors. A bellows line 15 is connected to this outlet opening 14 and leads to a chimney 16. In an unusual manner, the drawer is also closed at the top by means of a wall 17. Inside the drawer there is a centrifugal fan which has an impeller 18 and a housing 19. The latter is connected with its pressure port to the outlet opening 14 of the drawer, and the suction side of the blower opens into an opening 20 in the housing 19, this opening 20 being provided on the underside of the housing 19. The vertical axis of rotation 21 of the impeller 18 is mounted in the drawer by means of bearings (not shown), so that when the drawer is pulled out of the position A into the position B the entire centrifugal fan is moved, this movement being permitted by the bellows 15. In the upper wall 17 of the drawer there is a fresh air inlet 25 at the front of the dashboard 4, below which there is a dust filter 23. An immovable wall 71 of the oven located above the drawer is provided with a plurality of slots 22 lying parallel to one another, for the access of the fresh air when the drawer is inserted. With the drawer fully pulled out to the position B, the two filters 10 and 23 are in the positions 10 'and 23'. The stop 11 is then in the position 11 '.

In the above-mentioned drawer there is now also an extendable insert part which, in the illustration according to FIG. 1, has the side walls 26 to 30. The insertion part has a bottom wall 31, with the impellers 32. With these, the insertion part sits on an intermediate floor 33 of the drawer. This intermediate floor has an opening which adjoins the opening 20 of the housing 19 from the centrifugal fan. As a result, the space 34 lying between the base 6 of the drawer and the intermediate base 33 is connected to the suction side of the centrifugal fan. From Fig. 1 it can be seen that the insertion part is U-shaped in plan view. This U-shape has a leg 35 and a leg 36. The insertion part carries the control device used to control the oven. Depending on how the control is carried out, the corresponding devices are used, which are thus mounted on the floor 31 of the insert part. If a malfunction occurs during oven operation and maintenance is necessary, the insert part fastened to the dashboard 4 by means of fastening elements (not shown) can be pulled out of the drawer. This insert part technology is already widely used in other technical devices. This plug-in part technology has proven itself particularly when the control device contains electronic components. In the event of a malfunction, a replacement slide-in part can be used to replace the replaced one. In the present case, the oven is designed so that electronic components such as e.g. Computer, power supply and power section can be provided. A computer 37 and a power supply unit 38 sit on the leg 35 of the U-shaped insert part. The power part 39, which e.g. Relay suppressors, buzzer, fuses, potentiometer, 5 trimming resistors and connectors can include. The insertion part also carries a clamping bracket 40 for clamping the electrical cable (not shown), which is passed through the opening 12, to the insertion part.

It can be seen from FIG. 1 that when the insert part is inserted into the drawer, the centrifugal blower 18 to 21 fixed to the drawer lies between the two legs 35 and 36 of the U-shape, so that the two side walls 27 and 29 of the insert part form the housing 19 of the fan between them. The oven has an insulation i5 space 41 and 42 at the top and rear, and between the insulation space 41 and the drawer above it there is a horizontal space 43 which extends across the width of the drawer. This space 43 opens out into the open at the front of the oven and also opens out onto the back of the oven via individual openings 44. The upper wall 45 of the baking chamber 13 has a constantly open steam passage 46, which is filled by a grease filter 47. In the space 43 and protruding beyond it to the rear, there is a relatively flat 25 channel, which, however, extends over a considerable part of the oven width, as can be seen from FIG. 1. This channel has an upper wall 48, side walls 49, 50 and a suction nozzle 51 projecting downwards. The latter is located directly above the grease filter 47 (FIG. 2). The individual openings 44 30 are present in the rear wall 52 of the channel. The channel has a front mouth edge 53.

When the drawer is inserted in the position towards A, the dashboard 4 is approximately flush with a stationary kitchen furniture 54. The oven has a 35 hinged door 55 with a handle 56, the upper front edge of the door being provided with several air outlets 57. Opposite these outlets 57, on the lower end face of the door, not shown, there are openings of the same design which serve as air inlets. In Fig. 2 a 40 intermediate position C of the dashboard 4 is shown.

In the oven explained, the electronic components 37, 38 and 39 are therefore used, which are used for the programmed control of the oven. In such an embodiment of the oven, the dashboard 4 of the 45 drawer can be provided with capacitive touch switches, not shown, as are known from sensor technology. These touch switches do not protrude beyond the dashboard 4 to the front. These capacitive touch switches are used to set different 50 baking times, baking temperatures, top heat, bottom heat, the same heat from above and below and for grilling. In addition to these touch switches, the dashboard 4 can also carry a clock, a signal lamp and an acoustic signal generator. There may also be a main switch 55 for the electrical power supply.

The method of operation with the oven described is described below. If the drawer is fully inserted in position A, the oven is switched off electrically, it cannot be baked and the centrifugal fan is also not switched on. In the intermediate position C (general operating position), all baking, cooking and grilling work can be done with the oven, but the door 55 cannot be kept open because there is no stop, and thus the door is always in the closed position according to FIG 2 is held. The centrifugal fan is switched on in drawer position C.

The steam generated in the baking chamber 13 flows continuously in the direction of the arrows 58 through the steam passage 46

60

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Interspace 43 through the inlet opening 9, then in the direction of arrow 59 to the impeller 18 and from here in the direction of arrows 60 to the outside through the chimney 16. The hot air flowing out of the baking chamber 13 entrains fresh air in the channels 48 to 53, which is sucked in at the rear of the oven in the direction of the arrow 61. This fresh air flows partly through the individual openings 44 and partly in the direction of arrow 62 into the intermediate space 43. A niche ventilation is thus achieved. In the space 43 there is then an air flow which has arisen from the steam and the fresh air drawn in, so that the air flow present in the space 43 has a reduced temperature. The channels 48 to 53 with their mouths 44, 53 and 51 act as jet pumps, fresh air being sucked in through the very hot exhaust air. At the upper edge of the door 55, fresh air is also drawn in by the blower in the direction of an arrow 63. Through the air outlets 57 and the aforementioned air inlets, not shown, in the door 55, fresh air also flows through the door from bottom to top. The door is therefore flooded with air, which results in cooling of the door, which usually has a glass pane on the outside. The door is no longer so hot. The fresh air in the direction of arrow 63 and the air flowing through the door also pass in the direction of arrow 64 through the filter 10 and then in the direction of arrow 59 to the fan. Fresh air is also sucked in in the direction of an arrow 65 into the insertion part of the drawer via the slots 25 and the filter 23 and flows past the electronic components 37, 38 and 39 in the direction of the arrows 66 and then goes down in the direction of the arrows 67 deflected and flows in the direction of arrow 68 to the blower.

If the drawer according to FIG. 3 is moved into the fully extended position B, the stops 11 come to rest against the closed door 55 and pivot it into the position 55 '. The stops are in position 11 '. The two filters 10 and 23 are in the positions 10 'and 23'. Now, more fresh air is drawn in in the direction of arrow 65 according to FIG. 3 than in the inserted position according to FIG. 2. This fresh air in turn flows in the direction of arrows 66 past the electronic components 37 to 39 and keeps them cool. As a result of the split opening

The steam now flows outward from the loading door 69 of the oven in the direction of the arrows 70, through the filter 10 'again to the suction chamber 34 of the fan. Fresh air is also sucked in in the direction of arrow 63 in this door 55 ', which is open in columns. The air flowing in the direction of the arrows 59 already has a significantly lower temperature than the exhaust air 70 at the loading opening 69, since the air flowing in the direction of the arrow 59 has been mixed with various fresh air flows.

In this way, the electronic components 37 to 39 carried by the insert part or also other components during oven operation, that is to say when the fan is running, are constantly flushed with fresh air and kept cool in this way so that they are not damaged.

It should be pointed out further advantages of the oven described. Since the fan is fixed to the drawer, that is to say it is not arranged in a fixed manner on the back of the oven as in other known ovens, the distance from the fan to the inlet opening 9 on the underside of the drawer remains unchanged. This distance can be optimally designed. This means that when the oven is operating with the drawer position B according to FIG. 3, the fan with the filter 10 is moved forward where most * 25 steam is generated, namely with the door 55 'opened in gaps. If, on the other hand, the oven is operated in the drawer position C, the fan and the filter 10 are moved to where the strongest steam flow now occurs, namely towards the rear to the opening 46 with the filter 47. In the drawer position B according to FIG. 3, a particularly large amount of fresh air flows in the direction of the arrows 65 and 66 past the heat-sensitive electronic components 37 to 39. In position C of the drawer according to FIG. 2, the upper filter 23 is protected from dust inside the living room furniture 54. When grilling with the door 55 closed in position C, the steam is constantly sucked off through the air passage 46 with filter 47 without as in known ovens, a second blower is provided for this. In the illustrated oven, both the Ni-40 ventilation, i.e. the air flow 61, and the baking space ventilation, i.e. the steam flow 58 and the front ventilation, that is the air flow 63 and the air flow through the door, are carried out.

C.

3 sheets of drawings