ES2653645T3 - Vapor extraction hood - Google Patents

Abstract

Fume extraction hood (1), in particular flat screen hood, with a vapor screen (3) and a spring-operated extraction system (4), which is installed to move the vapor screen (3) from a inserted state to an extended state, in which the extraction installation (4) has a spring installation (64), which presses the steam screen (3) in the direction of the extended state, characterized in that the extraction installation (4 ) has a guide rail (7) and a spring guide installation (33) movable along the guide rail (7) and because the spring guide installation (33) is coupled by means of the spring installation (64) with the guide rail (7).

Description

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DESCRIPTION

Vapor extraction hood

The present invention relates to a fume extraction hood, in particular a flat screen hood. Vapor hoods are used for the aspiration of vapors on an appliance such as a kitchen. The so-called flat screen bells have a housing fixed on a wall of the building and a mobile bell or steam screen in relation to the building. In the operation of such a flat panel hood, the vapor screen is moved relative to the housing of the vapor extraction hood from an inserted state to an extended state. In this case, the screen of vapors of the drawer type is moved along guide rails relative to the housing. To move the vapor screen between its inserted state and its extended state, it is grasped by hand and optionally inserted into the housing of the fume hood or extended outside it. Alternatively, a motor drive system may be provided for the displacement of the vapor screen.

US 2010/0200576 A1 is considered as the closest state of the art and describes a microwave apparatus with a roll-operated fume extraction hood, which is configured in accordance with the preamble of claim 1. EP 2 541 154 A1 describes a fume extraction hood for mounting in an upper cabinet with a blower space for housing a blower unit, with at least one filter element arranged connected in front of the blower unit and with a Vapor screen housed in a mobile manner, which is arranged covered in the upper cabinet in a non-functioning position of the fume hood mounted in the mounting position and is extensibly configured in its operating position on the lower side of the upper cabinet . EP 2 233 842 A2 describes an actuation arrangement for a vision screen of a smoke extraction device, on which the vision screen can be moved relative to a housing of the smoke extraction device and has at least a roll element, in which the drive arrangement has a lever unit, which is constituted by at least one lever and is fixed on the vision screen and in which the roll element is connected for activation of the unit lever with one end of at least one of the lever unit levers.

EP 2 581 670 A1 describes a fume hood, which has a fume extraction housing and an extendable screen movable in front of the fume extraction housing, in which the fume hood has at least one roll-up spring for the support of the extendable screen movement, whose spring force points in the direction of the roll-up spring roll.

WO 02/093079 A1 describes an extensible roll-operated installation for a kitchen appliance.

EP 2 581 669 A1 shows an home appliance, which has at least one home appliance and at least one height adjustment module for mobile fixing of at least a part of the home appliance in a housing device, in which The height adjustment module presents for the preparation of the activation force at least one roll element, which represents a roll-up spring.

Document DE 20 2005 004 307 U1 describes an insulated fume hood with a suction hole arranged in a suction housing, with a chimney section and a suspension device, in which the chimney section is movable locally with a movement from a normal position outside the suspension device to a deeper position against a force cumulator that opposes the direction of movement and that can be moored in an adjustment position.

EP 2 554 916 A2 shows a fume hood, which has at least one fan box and at least one cover piece for covering at least a part of a space in the area of the fan box, the covering piece being fixed by means of the fixing device in the fume hood in relation to the fume hood of the fume hood.

Given this background, a task of the present invention is to create an improved fume hood.

Accordingly, a fume extraction hood with a vapor screen and a roll-operated extraction installation is proposed. The extraction installation is installed to move the vapor screen from an inserted state to an extended state, in which the extraction installation has a roll installation, which presses the vapor screen in the direction of the extended state, in which The extraction installation has a guide rail and a movable spring guide installation along the guide rail and in which the spring guide installation is coupled by means of the spring installation with the guide rail. The fume extraction hood is in particular a flat screen hood.

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The extraction system is preferably coupled with a housing of the smoke extraction screen and the vapor screen. The vapor screen can be inserted from the drawer type into the housing and can be removed again from it. Since the extraction system is spring loaded, a motor drive can be dispensed with. In this way, a simpler and more economical structure of the fume hood is achieved.

The extraction installation features a spring installation, which presses the vapors screen in the direction of the extended state.

The vapor screen is inserted against the spring force of the spring installation in the housing. In this case, the spring installation is tensioned. Through the use of the spring installation, a constant insertion force is achieved above all of the vapors screen insertion path.

According to another embodiment, the spring installation is expanded in the extended state of the vapor screen and is tensioned in the inserted state of the vapor screen.

Since the spring installation is tensioned in the inserted state, the vapor screen can be moved through the spring force of the spring installation from the inserted state to the extended state.

According to another embodiment, the extraction installation has a damping installation, which dampens a movement of the vapor screen during its movement from the inserted state to the extended state.

In this way, a constant extraction speed of the vapor screen can be achieved over all its extent of movement. The damping installation is preferably arranged in a spring guide installation of the extraction installation. The damping installation preferably has a gear, which can be engaged with a gear provided in a guide rail of the extraction installation. The damping parameters of the damping system can be adjustable.

According to another embodiment, the damping installation is a damping installation by rotation.

The damping system may have a fixing section and a rotating section in relation to the fixing section. The rotating section preferably has a teeth. The rotating section can be operatively connected to the fixing section through a damping fluid, for example an oil. A rotating movement of the rotating section in front of the fixing section is damped by means of the damping fluid.

According to another embodiment, the fume hood has a removable locking installation, which locks the vapor screen in the state inserted in a fume hood hood.

The blocking installation preferably has a first blocking element, which is connected to the housing of the fume hood, and a second blocking element, which is connected to the vapor screen. By means of the manual insertion of the vapor screen in an insertion installation from the extended state to the inserted state, the spring installation is tensioned. Through the insertion of the second blocking element in the first blocking element the vapor screen is locked in the state inserted in the hood of the extractor hood.

According to another embodiment, the blocking installation is installed to unlock the vapors screen by moving it in the state inserted in an insertion direction.

By pressing the steam screen, that is, by means of an insignificant displacement of the same in the direction of insertion, the blocking installation is unlocked and the second blocking element is detached from the first blocking element. Since the roll installation is prestressed in the inserted state, it expands and moves the vapor screen from its inserted state to its extended state.

The extraction installation features a guide rail and a scrollable roll guide installation along the guide rail. The roll guide installation is coupled by means of the roll installation with the guide rail.

The guide rail preferably has a U-shape in the cross section. The roll guide installation is engaged with the guide rail and is movable along it. For the housing of the roll installation, the roll guide installation may have a roll cage. The roll installation can be connected to the guide rail through a housing section and can be operatively connected to

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The roll guide installation through the roll cage.

According to another embodiment, the roll guide installation has fencing sections, which surround the guide rail, at least by sections.

Preferably, the roll guide installation has several fencing sections, in particular six fencing sections. The fencing sections guide the roll guide installation along the guide rail during its movement along the guide rail. The fencing sections may surround lateral sections of the guide section at least by sections.

According to another embodiment, the roll installation has a flange section, which is housed by a corresponding housing section of the guide rail, and a roll-up spring section. The roll-up spring section is housed, at least in sections, in the roll cage of the roll guide installation.

The flange section of the roll installation is suspended in the housing section of the guide rail and is thus connected to it in positive connection. The roll roll section is housed, at least by sections, in the roll cage. In the expanded state of the roll installation, the roll roll section is preferably fully arranged in the roll cage. In the case of displacement of the vapor screen from the extended state to the inserted state, the roll-up spring section is unwound and extracted by sections outside the spring cage.

According to another embodiment, the roll-up spring section is distended in a rolled state and is tensioned in an unwound state.

The use of a spring installation with such a roll-up spring section enables a compact structure of the extraction installation. By means of the roll-up spring section, a constant insertion force can be achieved over the entire vapors screen insertion path. This raises command comfort.

According to another embodiment, the spring guide installation has an elastic snap hook, which fits into a connecting element. The vapor screen is coupled through the connecting element with the spring guide installation.

The connecting element has an opening, which corresponds to the spring guide installation, in which the elastic snap hook fits. This ensures a connection of the spring guide installation with the joint element. The element of union. The connecting element can have in the same way at least one elastic snap hook, which fits in at least one recess provided in the vapor screen.

According to another embodiment, the guide rail is connected through a fixing angle with a housing of the fume hood.

The fixing angle can be mounted on the guide rail so that it can be mounted either on a left marginal section or on a right marginal section of the vapor screen.

According to another embodiment, the guide rail has at least one socket leg, which fits positively in a corresponding opening of the fixing angle.

Preferably, the guide rail has two lace legs. The at least one lace leg has a T-shape and is made in such a way that a flange thereof can be driven through a corresponding opening of the fixing angle. The opening preferably has an entry section for the introduction of the lace leg and a blocking section. Through the displacement of the guide rail in relation to the fixing angle, the flange of the at least one lace leg engages behind the locking section of the opening of the fixing angle and is thus fixed thereon. To secure the guide rail in the fixing angle, it can be screwed with the guide rail. The angle of connection preferably has two openings, one of which is intended for mounting on the right and one is intended for mounting on the left of the extraction system on the steam screen.

According to another embodiment, the fume hood has two spring-operated extraction facilities, which are arranged on opposite sides of the vapor screen.

Preferably, each of the extraction facilities has a damping installation. Alternatively, only the extraction facility can present a damping installation.

Other configurations and advantageous aspects of the invention for the purpose of the dependent claims thus

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as of the embodiments of the invention described below. Furthermore, the invention is explained in detail with the help of preferred embodiments with reference to the attached figures.

Figure 1 shows a schematic side view of a preferred configuration of a fume extraction hood with a vapor screen in an inserted state.

Figure 2 shows a schematic side view of the fume extraction hood according to Figure 1 with the vapor screen in an extended state.

Figure 3 shows a schematic top plan view of the fume extraction hood with the display of vapors in the extended state according to Figure 2.

Figure 4 shows a schematic perspective view of a guide rail of a steam extraction hood extraction installation according to Figure 1.

Figure 5 shows a schematic perspective view of a vapor extraction hood extraction system according to Figure 1.

Figure 6 shows another schematic perspective view of the extraction installation according to Figure 5.

Figure 7 shows a schematic perspective view of a spring guide installation of the extraction installation according to Figure 5.

Figure 8 shows a schematic perspective view of a spring installation of the extraction installation according to Figure 5.

Figure 9 shows a schematic perspective view of a damping installation of the extraction installation according to Figure 5.

Figure 10 shows a schematic perspective view of a connecting element of the extraction installation according to Figure 5.

Figure 11 shows a schematic perspective view of a fixing angle of the extraction installation according to Figure 5.

Figure 12 shows a schematic perspective view of a locking installation of the extraction installation according to Figure 5.

Figure 13 schematically shows another view of the extraction installation according to Figure 5.

Figure 14 schematically shows a top plan view of the extraction installation according to Figure 5 in an inserted state; Y

Figure 15 schematically shows a top plan view of the extraction installation according to Figure 5 in an extended state.

In the figures, the same or functional elements have been provided with the same reference signs, if nothing else is indicated.

Figure 1 shows a fume hood 1, in particular a flat screen hood. The fume hood 1 has a housing 2 and a vapor screen 3. The vapor screen 3 is configured in a drawer shape and is mobile in relation to the housing 2. The vapor screen 3 can be removed according to Figure 3 outside the housing 2 in an extraction direction A or can be inserted therein in an insertion direction E. The housing 2 is mounted, for example, on a wall of the building.

The fume hood 1 has a spring-loaded extraction system 4, which is installed to move the vapor screen 3 from an inserted state shown in Figure 1 to an extended state shown in Figures 2 and 3. Preferably , the fume hood 1 has two spring-loaded extraction systems 4, which are arranged on opposite sides of each other of the vapor screen 3.

The extraction installations 4 are covered according to Figure 3, preferably in each case by means of a cover 5. The cover 5 is made, for example, as a component of bent sheet. In Fig. 3, the fume hood 1 is shown with a single cover 5. The extraction system 4 arranged

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on the right side of the vapor screen 3 is shown without the cover 5 mounted. A control and / or display element 6 may be provided on the vapor screen 3. In the inserted state, the vapor screen 3 is removed outside the housing 2.

The extraction installation 4 has a guide rail 7 shown in Figures 4 to 6, which are referred to at the same time below. The guide rail 7 has in the cross section a U-shape with a base section 8 and two side sections 9, 10. Each of the side sections 9, 10 has a first wall section 11, which extends perpendicularly from the base section 8, a second wall section 12 that extends parallel to the base section 8 outwards and a third wall section 13 that extends perpendicularly from the second wall section 12. Perpendicular is understood in this case preferably an angle of 90 ° + 20 °, more preferably 90 ° + 10 °, still more preferably 90 ° + 5 ° and still more preferably 90 ° + 1 °.

In the second lateral section 10 a tooth 14 is provided that penetrates the lower side of the U-shape of the guide rail 7. The tooth 14 has a length 14. The length l14 is preferably less than a length l7 of the guide rail 7. The jagged 14 begins at a first end section 15 and extends in the direction of a second end section 16 of the guide rail 7. The jagged 14 ends at the front of the second extreme section 16.

On a lower side 17 of the base section 8, the guide rail 7 has at least one insertion leg 18. Preferably, the guide rail 7 has two insertion legs 18, 19. At each end section 15, 16 of the guide rail 7, in this case an insertion leg 18, 19 is associated. The insertion legs 18, 19 are arranged spaced, respectively, from the end sections 15, 16 associated therewith. The insertion legs 18, 19 extend outside the lower side 17 and have a T-shape. Each for insert 18, 19 has a flange 20 and a rib 21. The rib 21 connects the flange 20 with the bottom side 17 of the guide rail 7.

In each end section 15, 16 of the guide rail 7 there is provided in each case an opening 22, 23 in the base section 8. The openings 22, 23 are preferably configured as drills. On the lower side 17, preferably between the insertion legs 18, 19, a rectangular recess 24 is provided that opens the base section 8. The guide rail 7 has on the lower side 17, in addition, a previous curvature 25 in plate shape, in which the recess 24 extends in sections.

In the second end section 16 a housing section 26 is provided. The teeth 14 ends shortly before the housing section 26. The housing section 26 is arranged on an upper side 27 of the guide rail 7. The housing section 26 it has a base section 28, which connects the side sections 9, 10 to each other and is disposed within the shape of the guide rail U 7. The housing section 26 extends beyond the upper side 27 of the guide rail 7 and has a rectangular slot 29 in the center. The groove 29 is configured such that two sections of the wall 30, 31 of the housing section 26 extend beyond the upper slab 27. The groove 29 extends in a longitudinal direction of the guide rail 7. The groove 29 it is made up to a height of the upper side 27 in the housing section 26. Perpendicularly to the slot 29, from the second end section 16 of the guide rail 7 a second slot 32 is made in the housing section 26. The rail Guide 7 preferably has a plastic material. In particular, the guide rail 7 has an injection molten component.

The extraction installation 5 also has a spring guide installation 33 shown in Fig. 7. The spring guide installation 33 has a base section 34 in the form of a plate, which is provided with a plurality of recesses 35. A spring cage 37 is provided in a first end section 36 of the base section 34. The spring cage 37 has a square surrounding wall 38. A ring-shaped roof section 40 is provided on an upper side 39 of the wall 38, which closes the spring cage 37 upwards. The spring cage 37 is open downwards. The ring-shaped roof section 40 preferably has a semicircular shape.

On the wall 3, in front of the base section 34, an elastic lace hook 41 is provided. The elastic lace hook 41 has a base section 42, which extends perpendicularly out of the wall 38. The base section 42 is configured in band form. From the base section 42, two elastically deformable spring legs 43, 44 extend laterally to both sides from this side. The spring legs 43, 44 extend at an angle of 45 ° from the base section 42. An angle of 45 ° in this case means an angle of 45 ° + 10 °, preferably 45 ° + 5 °, more preferably 45 ° + 1 °. The spring legs 43, 44 extend outside the wall 38. In the base section 42 there is also provided an elastic snap section 45. The elastic snap section 45 has two spring arms 46, 47 elastically deformable, which extend in the direction of the spring legs 43, 44.

In a second end section 48 of the base section 34 of the spring guide installation 33, a T-shaped groove 49 is provided. The T-shaped groove 49 extends perpendicular to an upper side 50 of the

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base section 34. The T-shaped groove 49 totally breaks the base section 34.

On the upper side 50 there is also provided a hook section 51, which extends perpendicularly from the upper side 50. The hook section 51 has a first section 52, which extends perpendicularly from the upper side 50, a second section 53, which presents the geometry of a hollow semi-cylinder and a third section 54 which extends back in the direction of the upper side 50. The first section 52 is connected through the second section 53 with the third section 54. In The hook section 51 connects a recess, which breaks the base section 34. The recess is arranged below the semi-cylindrical section 53 of the hook section 51. The spring guide installation 33 also has encirclement sections 55 to 60 (figure 5). The number of fence sections is optional. Preferably, the spring guide installation 33 has six fence sections 55 to 60. The spring guide installation 33 may also have only two or four fence sections. The fence sections 55 to 60 extend perpendicularly from a bottom side 61 of the spring guide installation 33. The fence sections 55 and 60 extend from the wall 38. The fence sections 56, 57, 58 and 59 are they extend from the base section 34. Each of the fence sections 55 to 60 is suitable for surrounding at least by sections the guide rail 7. Each fence section 55 to 60 has a base section 62 extending from the lower side 61, which has a rectangular cross section. From the base section 62 extends a grip section 63 inwards with respect to the spring guide installation 33. The grip section 63 is arranged at a 90 ° angle relative to the base section 62. The sections of grip 63 are installed in such a way that they surround the wall sections 12, 13 of the side sections 9, 10 of the guide rail 7. The guide installation of the spring 33 is preferably configured in one piece and is formed with a plastic material, in particular in an injection casting process.

The extraction installation 4 presents a spring installation 64 shown in Figure 8, which presses the vapor screen 3 in the direction of its extracted state. The spring installation 64 is distended in the state extracted from the vapor screen 3 and is tensioned in the inserted state of the vapor screen 3. The spring guide installation 33 is coupled through the spring installation 64 with the guide rail 7.

The spring installation 64 has a flange section 65 and a roll-up spring section 66. Figure 8 shows the spring installation 64 in a relaxed state. In a rolled state, the winding spring section 66 is distended and in an unwound state, the winding spring section 66 is tensioned. The flange section 65 is configured in a T-shape and has a flange 67 and a rib 68. The flange 67 is connected through the rib 68 with the coil spring section 66. The flange section 65 is formed because both of them A recess 69 is provided on the sides of the spring installation 64. The recess 69 is configured at a right angle in the direction of the flange 67 and angled in a direction outside the flange 67.

The spring installation 64 is preferably formed with a spring steel. The spring installation 64 is made in one piece. The tab section 65 is configured correspondingly to the housing section 26 of the guide rail 7.

The extraction installation 4 also has a damping installation 70 shown in Figure 9. The damping installation 70 is preferably configured as a rotation damping installation.

The damping system 70 has a first section 71 with a tooth 72 and a fixing section 73. The tooth 72 is configured correspondingly to the tooth 14 of the guide rail 7. The tooth 72 is rotatably configured in relation to the fixing section 73. The damping installation 70 also has a damping fluid, such as an oil, which is provided in the damping installation 70. During a rotating movement of the teeth 72 in relation to the fixing section 73 , the damping fluid dampens the rotating movement. The fixing section 73 preferably has a flat cylindrical shape with two lateral fixing flanges 74, 75. A fixing 76 is provided on the fixing flange 74. An extended bore 77 is provided on the fixing flange 75.

Preferably, the extraction installation 4 has a connecting element 78 shown in FIG. 10. The connecting element 78 has a base section 79 in the form of a plate and two elastic snap hooks 80, 81 extending from the section base 79. The elastic snap hooks 80, 81 extend perpendicularly from an upper side 82 of the base section 79.

Each elastic snap hook 80, 81 has a rib section 83 that extends perpendicularly from the upper side 82 and an elastic snap section 84 that connects to the rib section 83. The elastic snap section 84 extends laterally from the rib section 83. The elastic lace sections 84 of the elastic lace hooks 80, 81 point outwards. The connecting element 78 also has an opening 85 in the base section 79. The connecting element 78 is preferably formed in one piece and has a plastic material. In particular, it is made as a component cast by plastic injection.

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The extraction installation 4 also has a fixing angle 86 shown in Figure 11. The fixing angle 86 is preferably made as a bent sheet metal component. The fixing angle 86 has a base section 87 in the form of a plate, from which the wall section 88 extends laterally. The wall section 88 is arranged perpendicularly to the base section 87.

An opening 89 is provided in the wall section 88. In the wall section 88, an edging 90 is also provided. The edging 90 is arranged at an angle of 90 ° in relation to the wall section 88. The edging 90 , wall section 88 and base section 87 configure a C shape.

The base section 87 has, in a first end section 91 and a second end section 92, respectively, holes 93, 94. The holes 93, 94 are provided on an edge of the base section 87 that is far from the section wall 88. In addition, the base section 87 has a hole 95 associated with the first end section 91 and a hole 96 associated with the second end section 92. The holes 95, 96 are provided on an edge of the base section 87 which is adjacent to wall section 88.

In the base section 87, two openings 97, 98 are also provided. The openings 97, 98 are arranged between the holes 93, 94 and are associated with the edge of the base section 87, which is remote from the wall section 88. Each of the openings 97, 98 has an entrance section 99, which is rectangularly shaped, and a blocking section 100, which is connected to the input section 99. The blocking section 100 is made as a slot . The blocking sections 100 of the openings 97, 98 are arranged adjacent to each other. The input section 99 is sized such that one of the engaging legs 18, 19 of the guide rail 7 can be guided through it. The blocking section 100 is sized such that the rib 21 of the lace legs 18 or 19 can be displaced therein.

The extraction system 4 or the fume hood 1 also has a removable locking system 101 shown in figures 3 and 12, which locks the vapor screen 3 in the state inserted in the housing 2 of the fume hood. fume extraction 1. The blocking installation 101 has a first blocking element 102 associated with the housing 2 and a second blocking element 103 associated with the vapor screen 3.

The first locking element 102 is connected to the housing 2. For this purpose, the first locking element 101 has a rectangular base section 104, from which a fixing section 105 extends. In the fixing section 105 elastic snap hooks 106, 107 are provided on both sides. During insertion of the first locking element 102 into a corresponding recess of the housing 2, the elastic snap hooks 106, 107 elastically fit into the housing 2, whereby the first locking element 102 is fixed in the housing 2. In the fixing section 10, a housing section 108 is also provided for the accommodation of a corresponding fitting section 109 of the second locking element 103.

The second blocking element 103 is coupled by means of a bolt 110 with the vapor screen 3. For the blocking of the blocking installation 101 the second blocking element 103 is housed in the first blocking element 102. In this case, the housing section 108 of the first locking element 102 houses the fitting section 109 of the second locking element 103. For the unlocking of the locking installation, the second locking element 103 is moved further in the insertion direction E, thereby that the second blocking element 103 is released again. The blocking elements 102, 103 are preferably made as plastic injection molten components.

For installation of the extraction installation 4, the spring installation 64 is inserted in accordance with FIG. 13 first in the spring guide installation 33. In this case, the roll-up spring section 66 is positioned in the cage of spring 37 of the spring guide installation 33.

The damping installation 70 is inserted in a recess 111, provided on the lower side 61 of the spring guide installation 33, of the base section 34. In this case, an elastic snap hook 112, which is provided in the recess 111, elastically fits over the first fixing flange 74 of the fixing section 73 of the damping installation. The second fixing flange 75 is previously inserted behind a projection 113 provided in the recess 111.

Next, the guide installation of the spring 33 according to Figure 6 is coupled starting from the first end section 13 of the guide rail 7 thereon. The elastic snap hook 41 points in this case in the direction of the housing section 26. In this case, the fence sections 55 to 60 of the spring guide installation 33 surround, at least in sections, the side sections 9 , 10 of the guide rail 7. The teeth 72 of the damping system 70 fit into the teeth 14 of the guide rail 7.

The flange section 65 of the spring installation 64 is hung in the housing section 26 of the guide rail 7. In this case, the flange 67 of the flange section 65 is received by the groove 32 of the housing section

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26 of the guide rail 7. The flange 67 is in the groove 32. The flange section 65 is received in positive connection by the housing section 26.

The guide rail 7 is installed according to Figure 5 on the fixing angle 86. The fixing angle 86 is mounted on the first end section 15 of the guide rail 7. In this case, the insertion stop 18 associated with the first end section 15 of the guide rail 7 in one of the openings 97, 98 of the fixing angle 86. To this end, the flange 20 is guided through the corresponding inlet section 99 and the guide rail 7 is moved in the direction of the blocking section 100.

Depending on whether the extraction system 4 is mounted on a first left side or side L or on a second side or right side R of the vapor screen 3 (Figure 3), either the opening 98 or the opening 97 of the angle is used of fixing 86. Figure 5 shows the extraction installation 4 for the right side R of the vapors screen 3. To secure the guide rail 7 in the fixing angle 86, it is screwed onto the opening 22 of the guide rail 7 and one of the holes 93, 94 the fixing angle 86 with the guide rail 7. The fixing angle 86 is then connected to the housing 2.

A connection between the spring guide installation 33 and the vapor screen 3 is established, as shown in Figure 14, because the connecting element 78 is attached to the elastic snap hook 41 of the spring guide installation 33. In this case, the elastic lace section 45 fits into the opening 85 of the connecting element 78. The spring arms 43, 44 press in this case against the base section 79 of the connecting element 78. The elastic lace hooks 80, 81 of the connecting element 78 elastically fit into corresponding recesses in the vapor screen 3.

Figure 14 shows the extraction installation 4 in the inserted state. The coil spring section 66 of the spring installation 64 is almost completely unwound, that is, the spring installation 64 is tensioned. The flange section 65 is housed in the housing section 26 of the guide rail 7. The guide installation of the spring 33 is connected through the connecting element 78 with the vapor screen 3. The fixing angle 86 is connected to the housing 2 of the fume hood. The vapor screen 3 is retained by means of the locking installation 101 in the inserted state.

The second blocking element 103 connected to the vapor screen 3 from the first one is disengaged by moving the blocking installation 101 in the insertion installation E, that is, by pressing the inserted vapor screen 3 Locking element 102 connected to the housing 2. Through the pre-tension of the spring of the spring installation 64, the vapor screen 3 is moved from the state inserted in the extraction direction A to its extracted state. In this case, the roll-up spring section 66 is wound in the spring cage 37 of the spring guide installation 33. The movement of the vapor screen 3 is damped through the damping system 70. The characteristic curve of The damping of the damping system 70 can be adapted as desired. Through the use of the damping system 70, abrupt or too rapid movement of the vapors screen 3 is prevented. Furthermore, through the adjustable damping parameters of the damping system 70, a constant extraction speed of the steam screen 3. Preferably, the fume hood 1 has two extraction installations 4. The damping installation 70 can be provided in both extraction installations 4 or only in one extraction installation 4. For the displacement from the vapors screen 3 from its extracted state to the inserted state, this screen is manually inserted in the insertion direction E against the spring force of the spring installation 64. In this case, the winding spring section 66 is unwound of the spring installation 64. As soon as the second locking element 103, which is connected to the screen of vapors 3, fits in the second blocking element 102, which is connected to the housing 2, the vapors screen 3 is locked in the state inserted in the housing 2. Since the spring installation 64 has the roll-up spring section 66, a constant insertion force is achieved over the entire insertion path of the vapor screen 3. Although the invention has been described in this case with the help of preferred embodiments, it is not limited thereto, but can be modify in multiple ways, so that the scope of protection is defined by the claims.

Reference signs used

 one

 Fume extraction hood

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 Case

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 Vapor display

 4

 Extraction Installation

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 Cover

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 Command / Representation Element

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 Guide rail

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 Base section

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 Lateral section

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Side section Wall section Wall section Wall section Serrated

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For lace

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Eyelash

Rib

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Recess

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Accommodation section

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Spring guide installation

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Section

Section

Fence section Fence section Fence section Fence section Fence section Fence section Bottom side Base section Grip section Spring installation Flange section Roll-up spring section Tab Rib rib Notch

Damping Installation

Section

Jagged

Fixing section

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

89

90

91

92

93

94

95

96

97

98

99

100

101

102

103

104

105

106

107

108

109

110

111

112

113

TO

AND

17

114

L

R

Fixing tab Fixing tab Drill Drill

Binding element Base section Elastic lace hook Elastic lace hook Top side Rib section Elastic lace section Opening

Fixing angle

Base section

Wall section

Opening

Edged

Extreme section

Extreme section

Drill

Drill

Drill

Drill

Opening

Opening

Insertion section Blocking section Locking installation Locking element Locking element Base section Fixing section Elastic lace hook Elastic lace hook Housing section Lace section Bolt

Recess

Elastic lace hook Projection

Extraction Direction

Insertion address

Length

Length

Left side

Right side

Claims (11)

5 10 fifteen twenty 25 30 35 40 Four. Five fifty 1. - Fume extraction hood (1), in particular flat screen hood, with a vapor screen (3) and a spring-operated extraction system (4), which is installed to move the vapor screen (3 ) from an inserted state to an extended state, in which the extraction installation (4) has a spring installation (64), which presses the vapors screen (3) in the direction of the extended state, characterized in that the installation of extraction (4) has a guide rail (7) and a spring guide installation (33) that can be moved along the guide rail (7) and because the spring guide installation (33) is coupled by means of the spring installation (64) with the guide rail (7). 2. - Fume extraction installation (1) according to claim 1, characterized in that the spring installation (64) is distended in the extended state of the steam screen (3) and is tensioned in the inserted state of the Vapor screen (3). 3. - Fume extraction installation (1) according to claim 1 or 2, characterized in that the extraction installation (4) has a damping installation (70), which dampens a movement of the vapor screen (3) during the movement of the same from the inserted state to the extended state. 4. - Fume extraction installation (1) according to claim 3, characterized in that the damping installation (70) is a rotation damping installation. 5. - Fume extraction installation (1) according to one of claims 1 to 4, characterized by a removable locking installation (101), which locks the vapor screen (3) in the state inserted in a housing ( 2) of the fume hood (1). 6. - Fume extraction installation (1) according to claim 5, characterized in that the blocking installation (101) is installed to unlock the vapor screen (3) by moving it in the state inserted in an extraction address (E). 7. - Fume extraction installation (1) according to claim 1, characterized in that the spring guide installation (33) has fence sections (55 to 60), which surround the guide rail at least in sections ( 7). 8. - Fume extraction installation (1) according to claim 7, characterized in that the spring installation (64) has a flange section (65), which is received by a corresponding housing section (26) of the rail guide (7), and a roll-up spring section (66), which is received, at least by sections, in a spring cage (37) of the spring guide installation (33). 9. - Fume extraction installation (1) according to claim 8, characterized in that the spring guide section (66) is distended in a rolled state and is tensioned in an unwound state. 10. - Fume extraction installation (1) according to one of claims 1 to 89, characterized in that the spring guide installation (33) has an elastic snap hook (41), which fits into a connecting element (78), and because the vapor screen (3) is coupled by means of the connecting element (78) with the spring guide installation (33). 11. - Fume extraction installation (1) according to one of claims 1 to 10, characterized by two spring-operated extraction installations (4), which are arranged on opposite sides (L, R) of the Vapor screen (3).