EP1626229A2 - Domestic electric product - Google Patents

Abstract

Electric oven with pyrolytic drive has interior space with opening and door (10) opening and closing on this opening and closing stop too limit the closing motion of the door. The closing stop has a adjusting part (44) in order to seal off the gap between the door and closing edge of the oven. It also has a buffer part (52) and sensor, typically a pressure sensor. It is mounted outside the normal door seal.

Description

The invention relates to a household electric appliance according to the preamble of claim 1.

In a household appliance that generates heat, in particular an oven, the energy consumption of the household electric appliance depends to a considerable extent on how tightly closed an opening of a heated interior of the domestic appliance is. In case of poor or uneven sealing of a gap between a door of the oven and an oven flange, heat from the interior undesirably escapes. This is particularly problematic when the oven is provided for a pyrolysis, in which the interior is heated to temperatures above 400 ° C and thereby food particles are burned in the interior. In a pyrolysis operation from the interior undesirable heat exiting can lead to a hazard to an operator caused by burns.

It is therefore an object of the present invention to provide a household electric appliance in which a gap between a door and a closing surface of the household electric appliance, in particular in a pyrolysis operation, is reliably and uniformly sealed. This object is achieved by the features of claim 1, while advantageous embodiments and modifications of the invention can be taken from the dependent claims.

The invention is based on a domestic electric appliance, in particular an oven, with an interior having an opening, a door closing the opening and having a closed position and a closing stop limiting a closing movement of the door.

It is proposed that the closing stop comprises an adjusting element. It can be achieved a uniform adjacent to the door gap and thus a uniform load on a door seal. After mounting the door, the closed position can be adjusted so that the gap is even. In addition, the adjustability offers the adjustment of the ability to reliably detect a closed position of the door. This is particularly advantageous in a pyrolysis operation, which should only be bootable for safety reasons when the door is completely closed. With the closing stop an element is present, on which the door rests reliably in its closed position. As a result, for example, with the aid of an element of the closing stop a release signal can be generated. With the adjustment can be achieved that the door rests reliably in its closed position, even with an inaccurately made hinge on the closing stop. As a result, reliable starting of the pyrolysis operation can be ensured.

Advantageously, the closing stop is arranged in the upper quarter of the door, whereby - in a hinge holder of the door in the lower region of the door acting on the closing stop forces can be kept low. A soft closing of the door can be achieved if the closing stop comprises a buffer element.

In an advantageous embodiment of the invention, the closing stop comprises a sensor element. In conjunction with the closing stop and the adjusting element, a reliable detection of the closing position of the door can be achieved. Conveniently, the sensor element is a pressure sensor. Pressing the door on the adjustment or the closing stop is indicative of a closed position of the door. Such pressure can be detected with a pressure sensor and a corresponding signal sent to a control unit. As a sensor element, for example, a piezoelectric element can be used. In an alternative embodiment, the sensor is an induction sensor. An induction sensor is quite insensitive to mechanical loads, for example, when slamming the door. Due to the always-defined distance between the closing stop and the door, positioning of an induction sensor on the closing stop is particularly advantageous, as this enables reliable recognition of the closed position of the door.

Conveniently, the household electrical appliance comprises a guided around the opening door seal, wherein the closing stop is arranged outside the door seal. Through the door seal the closing stop is protected against contamination, in particular by leakage of grease from a cooking chamber, whereby loads on the closing stop can be kept low. A special advantage arises with a Oven with pyrolysis function, since the closing stop is subject to a low thermal load when the closing stop is arranged outside the door seal.

A perfect visual impression - even with years of operation of household electrical appliance - can be achieved if the door is aligned by the adjustment in alignment with a control element. Even with an age-related reduction in elasticity of the door seal, the door pushes no further than in a new device, but always remains aligned with the edge. In addition to protecting the door seal, the optically perfect impression of the household electrical appliance is maintained. It is sufficient in this case if outer surfaces of the door and the operating element are arranged in alignment.

Advantageously, the household electrical appliance comprises a frame element, on which a bearing part of the closing stopper is arranged. It is the closed position of the door relative to the frame element adjustable, on which in particular the door seal is held. It can be achieved a straight gap with a uniform load on the door seal and a good appearance. Conveniently, the frame member on a Lisene on which the bearing part is arranged.

A household appliance intended for installation usually requires a fastening unit in which a fastening element, for example a furniture screw, is mounted and in particular concealed outwardly. If the bearing part encompasses a fastening element for fastening the frame element to a furniture element, then the bearing part can assume the function of a fastening unit. It can be saved components and thus manufacturing and assembly costs.

By attaching the bearing part on the frame member by means of the fastener can be dispensed with a separate attachment of the closing stop and additional components.

In addition, it is proposed that the household electrical appliance has a covering element which visually covers the fastening element and a buffer element fastened to the adjusting element to bear against the door, the covering element and the buffer element being made in one piece. A usual optical reasons cover the Fastener can be achieved with the buffer element, whereby an additional component can be saved.

In particular, in a pyrolysis stove, it is advantageous if there is a gap between the frame element and the furniture element. A transfer of heat in the furniture element can be counteracted. An integration of a thermal barrier in the closing stop can be achieved if the bearing part comprises a spacer element for spacing at least a part of the frame element from a furniture element. The bearing part can be used as a spacer element, which components can be saved.

Reliable holding a proposed closed position and thereby reliable operation of the household electrical appliance can be achieved by a locking means for locking the adjusting element. An unintentional adjustment of the adjustment can be prevented.

Further advantages emerge from the following description of the drawing. In the drawings, embodiments of the invention are shown. The drawing, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations.

Fig. 1

einen Backofen von vorn,

Fig. 2

ein Rahmenelement des Backofens aus Figur 1 mit zwei seitlichen Lisenen, an denen jeweils ein Schließanschlag befestigt ist,

Fig. 3

einen Ausschnitt des Backofens aus Figur 1 in einer Seitenansicht,

Fig. 4

eine perspektivische Schnittdarstellung durch eine Lisene aus Figur 2 mit einem durch eine Tür verdeckten Schließanschlag,

Fig. 5

eine Explosionsdarstellung des Schließanschlags aus Figur 4 an der Lisene,

Fig. 6

eine Schnittdarstellung durch das Rahmenelement aus Figur 2,

Fig. 7

einen vergrößerter Ausschnitt aus Figur 6,

Fig. 8

eine Schnittdarstellung durch den Schließanschlag aus Figur 7,

Fig. 9

eine Seitenansicht auf ein Lagerteil des Schließanschlags und

Fig. 10

eine Schnittdarstellung durch einen weiteren Schließanschlag.

Show it:

Fig. 1

an oven from the front,

Fig. 2

a frame element of the oven of Figure 1 with two lateral pilaster strips, to each of which a closing stop is attached,

Fig. 3

1 a detail of the oven from FIG. 1 in a side view,

Fig. 4

3 shows a perspective sectional view through a slat of FIG. 2 with a closing stop concealed by a door,

Fig. 5

an exploded view of the closure stop of Figure 4 on the Lisene,

Fig. 6

a sectional view through the frame member of Figure 2,

Fig. 7

an enlarged detail of Figure 6,

Fig. 8

a sectional view through the closing stop of Figure 7,

Fig. 9

a side view of a bearing part of the closing stop and

Fig. 10

a sectional view through a further closing stop.

1 shows a domestic electric appliance 2 embodied as an oven with a pyrolysis function from the front with a baking muffle 6 arranged in a housing 4, which delimits a cooking space as interior, the opening 8 (FIG. 2) of which is closed at the front by a door 10. Behind the door 10, a frame member 12 is arranged, which is shown in Figure 2. The frame member 12 includes a flange 13 and two pilaster strips 14, which are welded as side covers of the flange 13 with the flange 13. Guided around the opening 8 is a door seal 16, which partially projects laterally beyond the pilasters 14. Arranged on the pilasters 14 and outside the door seal 16 are two closing stops 18, which are positioned in a top eighth of the flange 13. At its lower end, the flange 13 comprises two openings 20 for each hinge 22, one of which is shown in FIG.

Figure 3 shows the household appliance 2 fragmentary from the side, with a gap 24 between the door 10 and a curtain 14 is visible. Arranged in the gap 24 are both the door seal 16 and the closing stops 18. Above the door 10 is an operating element 26 with buttons 28 for setting an operation of the household electrical appliance 2. At the bottom of the control element 26 has an edge 30, which is aligned a door edge 32 of the door 10 is arranged. Due to the adjustability of the gap 24 by the closing stop 18, the door 10 can be aligned so that outer surfaces of the door 10 and the operating element 26 are aligned.

Figure 4 shows a part of the Lisene 14 and a section of the door 10 in a perspective view. Behind a glass of the door 10, the closing stop 18 is shown arranged on the Lisene 14. The closing stop 18 holds the door 10 at a distance 34 of 6 mm from the ledge 14, which is equal over the length of the gap 24.

The closing stop 18 is shown in FIG. 5 in an exploded view without the door 10 in front of it. The closing stop 18 comprises a bearing part 36 which is inserted into a not visible in Figure 5 opening in the Lisene 14. The bearing member 36 is designed as a cylindrical tube made of plastic with a collar 38 which prevents complete passage of the bearing part 36 through the opening in the Lisene 14.

With the collar 38, the bearing part 36 is located on the Lisene 14. The bearing part 36 surrounds a fastening element 40 embodied as a furniture screw, which, as shown in FIG. 6, connects the bearing part 36 to a furniture element 42, for example a side wall of a built-in closet. An adjustment member 44 is inserted into an opening 46 of the bearing member 36 and can be adjusted by means of a spiral groove 48 in the opening 46 by a rotational movement of the adjusting member 44. For easy implementation of such a rotational movement, the adjusting member 44 includes a slot 50 into which a screwdriver can be inserted. A plug-shaped buffer member 52 is inserted into an opening 54 of the adjustment member 44 and thus closes this opening 54 and may optionally additionally cover the slot 50.

Figure 6 shows the closing stop 18 on the Lisene 14 in the assembled state. With the help of the fastener 40, the bearing part 36 of the closing stopper 18 is screwed to the furniture element 42 and in turn holds by the collar 38, the Lisene 14 on the furniture element 42. The Lisene 14 is welded to a cool first portion 56 of the flange 13, by a slot executed heat decoupling region 58 is thermally decoupled from a hot region 60 of the flange 13 to a considerable extent. The hot region 60 is part of an interior 62 enclosing baking muffle 6. For further thermal decoupling of the flange 13 and the Lisene 14 from the furniture element 42, the bearing part 36 is designed as a spacer and spaced most of the Lisene 14 from the furniture element 42, so that between the Lisene 14 and the furniture element 42, an air flow can flow.

Inserted into the heat decoupling region 58 is a strip-shaped part 64 of a glass-fiber seal which bears against the hot region 60. The glass-fiber seal also includes a tubular member 66 to which another portion 68 of the silicone gasket 16 is attached. This third part 68 of silicone abuts the door 10 and the cool area 56 and thus seals a gap between the flange 13 and the door 10.

The part 68 of the door seal 16 made of silicone is made very soft and can be compressed by the door by the force applied by the hinges 22 on the door 10 force further than in Figure 6 in the direction of the flange 13. Such further compression is prevented by the closing stop 18, which also bears against the door 10 with its buffer element 52. For this purpose, the adjusting member 44 so far from the bearing part Turned out 36 that the distance 34 of the gap 24 between the door 10 and the Lisene 14 over the entire length of the gap 24 is the same.

In Figure 7, the closing stopper 18 is shown enlarged. In an inner groove-shaped recess of the bearing part 36 two metallic guide elements 70 are attached. These two guide elements 70 can be designed separately and held separately in the bearing part 36 or, for example, integrally formed on a snap ring 72 (FIG. 8), which is introduced in the recess of the bearing part 36. Between the open ends of the snap ring 72 an integrally formed with the bearing member 36 blocking element 74 is arranged, which prevents rotation of the snap ring 72 and with it the guide elements 70 within the bearing part 36. The two guide elements 70 each engage in one of the grooves 48 of the adjustment member 44, wherein the two grooves 48 are each guided to a lower end 76 of the adjustment member 44. After inserting the guide elements 70 into the bearing part 36, the adjusting element 44 can thus be introduced into the bearing part 36 and the guide elements 70 are inserted into the grooves 48. With the help of the slot 50 for a screwdriver now the adjustment 44 can be screwed into the bearing part 36. By turning the adjusting element 44 with a screwdriver or with an already inserted buffer element 52 by hand, the distance 34 between the door 10 and the Lisene 14 can be adjusted. In this case, the guide elements 70 travel along the groove 48 and cause a screwing in or unscrewing of the adjusting element 44 in the bearing part 36th

If a desired position of the adjusting element 44 is achieved in the bearing part 36, then a web-shaped locking means 78, which also has a small slot 80 for a screwdriver, can be inserted into one of eight grooves 82 in an outer surface of the adjusting element 44. The grooves 82 extend parallel to one another and parallel to an axial direction of the largely cylindrical adjusting element 44.

The grooves 82 are shown in FIG. 8 in the adjustment element 44 shown in cut form. The grooves 82 intersect the helical grooves 48, which are made slightly larger and deeper than the rectilinear grooves 82. Upon insertion of the locking means 78, shown in plan view in FIG. 8, into one of the grooves 82, the locking means 78 locks Turning the adjusting member 44 within the bearing part 36. The locking means 78 in turn - as shown in Figure 9 - in a trapezoidal groove of the collar 38 of the bearing part 36 is supported. The trapezoidal groove is designed so that the locking means 78th can only be moved back and forth within the trapezoidal groove with a certain amount of force. As a result, an unintentional falling out of the locking means 78 is prevented from the groove.

FIG. 7 shows a sensor element 84 which is arranged directly adjacent to the guide elements 70. The sensor element 84 can be either annular or divided into two or more elements, which are arranged on the guide elements 70 or on the snap ring 72. The sensor element 84 comprises one or more piezo crystals and is designed as a pressure sensor. When the door 10 rests on the buffer element 52, a pressure force applied by the hinges 22 acts through the door 10 on the buffer element 52 and further on the adjustment element 44. This pressure force is transmitted to the guide elements 70, which adjust the adjustment element 44 within the bearing part 36 hold. Furthermore, the pressure force is transmitted via the sensor element 84 to the bearing part 36 and can thus be registered by the sensor element 84. The sensor element 84 supplies via signal lines 86 a signal in the form of a voltage or a resistance to a control unit, not shown, of the household electrical appliance 2.
Also shown in a sectional view in FIG. 7 is a further sensor element 88, which is designed as an induction sensor. The sensor element 88 is preferably designed as an alternative to the sensor element 84 in the closing stop 18 and is additionally shown in FIG. 7 only for the sake of clarity. Within the sensor element 88, a small coil may be arranged, which is connected via signal lines 90 to the adjusting element 44. The adjusting member 44 is suitably at least partially made of a metal in such a design, so that an electrical line between the two signal lines 90 and the likewise metallic guide elements 70 is present. Via the signal lines 86, the sensor element 88 may be connected to the control unit, not shown. In this case, the door 10 advantageously has a metallic element on or in the vicinity of the location of contact of the buffer element 52 with the door 10, whose proximity to the sensor element 88 influences the inductance of the sensor element 88. Due to the proximity of such a metallic element to the sensor element 88, the closed position of the door 10 can be detected by the sensor element 88 or the control unit.

Another embodiment of the invention is shown in FIG. With regard to features and functions that remain the same, reference may be made to the description of the exemplary embodiment in FIGS. 1 to 9. A very easy to install closing stop 18 'comprises a bearing part 36', which is carried out separately by a fastening element, not shown in Figure 10. The fastening element is arranged by the closing stop 18 'separately and a few centimeters lower than the closing stop 18' at a cool region 56 'of a flange 13'. The bearing part 36 'has an internal thread into which an adjusting element 44' is screwed. To adjust the width of the gap 24, the adjustment member 44 'has a slot to both sides of which a buffer member 52' is sprayed onto the adjustment member 44 '. On the buffer member 52 'is the door 10', which compresses a door seal 92 for sealing. The bearing part 36 'is held by wing-shaped locking means 94 in the cool region 56' of the flange 13 ', which are formed by two slots in the bearing part 36' and a folding out of the arranged between the slots plastic.

reference numeral

2

Household electrical appliance

4

casing

6

baking muffle

8th

opening

10, 10 '

door

12

frame element

13, 13 '

flange

14

Lisene

16

door seal

18, 18 '

closing stop

20

opening

22

hinge

24

gap

26

operating element

28

stud

30

edge

32

door edge

34

distance

36, 36 '

bearing part

38

collar

40

fastener

42

furniture element

44, 44 '

adjustment

46

opening

48

groove

50

slot

52, 52 '

buffer element

54

opening

56, 56 '

Area

58

Heat decoupling region

60

Area

62

inner space

64

part

66

part

68

part

70

guide element

72

snap ring

74

blocking element

76

The End

78

locking

80

slot

82

groove

84

sensor element

86

signal line

88

sensor element

90

signal line

92

door seal

94

latching means

Claims (12)

Domestic electrical appliance (2), in particular oven, with an opening (8) having interior (62), a the opening (8) closing and a closed position having door (10, 10 ') and a closing movement of the door (10, 10' ) limiting closing stop (18, 18 '), characterized in that the closing stop (18, 18') comprises an adjusting element (44, 44 '). Domestic electrical appliance (2) according to claim 1, characterized in that the closing stop (18, 18 ') comprises a buffer element (52, 52'). Domestic electrical appliance (2) according to claim 1 or 2, characterized in that the closing stop (18) comprises a sensor element (84, 88). Domestic electrical appliance (2) according to claim 3, characterized in that the sensor element (84, 88) is a pressure sensor. Domestic electrical appliance (2) according to one of the preceding claims, characterized by a door seal (16) guided around the opening (8), the closing stop (18, 18 ') being arranged outside the door seal (16). Domestic electrical appliance (2) according to one of the preceding claims, characterized by an operating element (26), wherein the door (10, 10 ') by the adjusting element (44, 44') in alignment with the operating element (26) is alignable. Domestic electrical appliance (2) according to one of the preceding claims, characterized by a frame element (12) on which a bearing part (36, 36 ') of the closing stop (18, 18') is arranged. Domestic electrical appliance (2) according to claim 7, characterized in that the bearing part (36) engages around a fastening element (40) for fastening the frame element (12) to a furniture element (42). Domestic electrical appliance (2) according to claim 8, characterized in that the bearing part (36) by the fastening element (40) on the frame member (12) is fixed. Domestic electrical appliance (2) according to claim 8 or 9, characterized by a fastening element (40) optically concealing cover and a fixing element (44) fixed buffer element (52) for abutment with the door (10), wherein the cover and the buffer element (52 ) are made in one piece. Domestic electrical appliance (2) according to one of claims 7 to 10, characterized in that the bearing part (36) comprises a spacer element for spacing at least a part of the frame element (12) from a furniture element (42). Domestic electrical appliance (2) according to one of the preceding claims, characterized by a locking means (78) for locking the adjusting element (44).

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