DE102009038311A1 - Device for controlling climate of vehicle seat, particularly air craft seat, has seat part or back rest part and cushioning element covered with seat cover - Google Patents

Abstract

The device has a seat part (2) or a back rest part (3) and a cushioning element (5) covered with a seat cover (4). The cushioning element has a heating foil (17) made of electrically activated material as electric planar heating element. The heating foil is provided with multiple perforation holes allowing air passage in a specified quantity. The holes extend over the seat part surface or the back rest part in a defined seat heating region.

Description

The Invention relates to a device for air conditioning a vehicle seat, in particular an aircraft seat, according to the preamble of the claim 1.

such Devices for conditioning, that is for heating and / or ventilating seats are already known, in particular in conjunction with seats from the automotive industry. In the area the aviation technology comfort such seats have no standard Entrance found, so that, especially for use in private jets or in the upper class of commercial aircraft There is a need for such comfort seats.

For example, relating to a motor vehicle seat DE 10 2005 035 116 B3 already a seat air conditioning known in which a seat cushion part and a backrest each comprise a ventilation device which is integrated into the respective pad. The seat cushion part and the backrest comprise a seat frame with a cushion support shell, on which a lower cushion layer rests as the lowermost layer of the cushion. The lower cushion layer is made of a foam and extends over the entire length and width of the cushion support shell. On the lower cushion layer is a ventilation layer of the ventilation device. On the ventilation layer is again on a pressure distribution layer, which may consist of a non-woven or an open-cell foam. The seat occupant facing surface of the pad of the seat cushion part is covered by a cushion cover, which is provided with a uniform perforation. The ventilation device is formed here by miniature fan, which are accommodated in a cylindrical recess of the lower cushion layer. Air is drawn in from below the seat cushion part via the fans and injected into the ventilation layer via air inlet ducts. The air blown in by means of the fan flows through the ventilation layer in the lateral direction and in the process flows through one or more so-called heating and / or cooling devices which are sandwiched by air-conducting tubes with heating layers. Each of these heating layers comprises a resistance heater which can be supplied with electric current and are designed as a thin-layered, deformable and elastic layer. If such a resistance heater is heated with electric current, the air flowing along it is heated and then subsequently reaches the seat part or backrest surface via corresponding air passage openings. For cooling, the heating layer should be designed with Peltier elements in order to cool the air.

One Such structure is obviously expensive and thus both manufacturing technology as well as manufacturing technology expensive.

Next is from the DE 10 2005 051 738 A1 a Flächenheizelement for a motor vehicle seat known, which surface heating element is constructed from a plurality of heating conductors, which are formed as a conductor knit or Leitergewirk. Such a structure is relatively expensive. In addition, in the case of a conductor structure, local damage may occur due to the mechanical stress in, for example, the seat part region of a vehicle seat, which, for example, can then form hot spots, so that a certain danger of operating is at least latently present.

In contrast, It is an object of the present invention to provide a device for Air conditioning of a vehicle seat, in particular an aircraft seat, too create, the manufacturing technology and manufacturing technology easy and is constructed inexpensively and / or with the ventilation and heating a vehicle seat in a simple manner with high reliability can be performed and / or with, in particular regardless of the ventilation, a uniform, targeted heat transfer over a desired Area can be achieved and / or with an unwanted Disturbance or impairment of the aircraft electronics avoided can be.

According to the invention the device for air conditioning a vehicle seat, in particular a Aircraft seat, a seat part and / or a backrest part with a, upholstered element covered with a seat cover, which Padding element at least one, a heating layer forming heating foil made of an electrically activatable material as an electric surface heating element having, in a defined degree with several, one Air passage permitting perforation holes is provided and in a defined Sitzheizbereich over a large area over the seat part surface and / or the backrest surface extends.

With the structure of the invention is a particularly advantageous and easy to implement coexistence of ventilation on the one hand and heating on the other hand possible. So can to an over the heating foil an advantageous Sitzteil- and / or Backrest heating done. On the other hand allows the perforation of the heating layer an unhindered passage of the generated or sucked by the ventilation device Air, so that a desired degree through the Heating device unobstructed ventilation of the vehicle seat is possible.

Particularly advantageous can with such, a resistance heating forming Heizfo lie as surface heating a uniform heat transfer over a closed area, which is not the case with the heating elements formed by individual tracks.

One Another particular advantage of such, a full-surface Heat transfer enabling heating foil resistance heating is that with this, unlike the heaters formed by conductors, some have an antenna function, no electrical Signals, radio waves, etc. are emitted as interference signals or can be received. Likewise, with such Heating foil resistance heating no relevant electrosmog generated. This ensures that the aircraft electronics are not disturbed or impaired.

The Conceptual heating foil is meant to express that This is a material web as a heating layer, the other way as a braid or knit a continuous, sheet-like solid material layer training, which is perforated later. This means, that the heating foil is a thin, coherent, continuous layer is. For example, this heating layer formed by a spreadable mass, in a predetermined manner Has quantitative proportions of carbon and / or graphite and subsequently dried, for example, to the film-like Form material web. For example, the heating layer can through formed a thin, carbon fibers having foil or mass be, with the carbon fibers here in a carrier material or a binder are included. That means it is So here at the heating foil to one, except for the later unitary for producing the heating foil introduced perforations, continuous coating, not by single threads or the like.

Especially preferred is a structure in which the cushioning element at least one, depending on the specific flow conditions arranged above and / or below the heating foil ventilation layer by means of an air flow, preferably one of at least a stream of air generated or drawn in by a fan element, in a defined extent over a large area distributable or collectible, in particular deliverable or suckable is. Specifically, with such a ventilation layer, an air flow for example, in the area below a seat cover to be there, for example, moisture targeted to dissipate and / or to cool the seat cover. Alternatively, a ventilation layer but also used be a blanket on this impinging airflow to bundle at a defined point to this more or less selectively. This at least one Ventilation layer can indirectly with the heating foil, for example with the interposition of a later explained in more detail Protective and / or comfort layer, or else directly coupled, in particular be connected. For example, the heating foil with a ventilation layer by sewing and / or lamination be connected.

The Ventilation layer itself is preferably by a per se known Spacer knit formed, which in particular with a variety is provided by spacer threads, which is the large-area distribution an air flowing into the spacer fabric effect the entire ventilation layer area.

Further can the seat cover directly or indirectly, for example, under Interposition of at least one air-permeable protective and / or comfort layer and / or ventilation layer with the heating foil be connected, in particular with this insoluble, preferably by sewing and / or lamination.

Especially preferred is a structure in which the heating foil on the top and / or Underside at least partially with an air-permeable protection and / or comfort layer and / or with a by a knitted fabric connected ventilation layer connected, in particular laminated is. According to a particularly preferred embodiment Here, a structure is provided in which the heating foil both is coated on the top as well as on the bottom and forms a separately manageable sandwich construction.

By the provision of at least one such protective and / or comfort layer and / or ventilation layer on at least one of the Heizfolienseiten On the one hand, the heating foil is damaged, for example protected against mechanical damage. To the others can with such a protective and / or comfort layer, formed for example of a soft elastic material is, the seating comfort significantly increased. So can for example, by sandwiching the Heating foil in an upper and lower protective and / or comfort layer a particularly haptic pleasant seating comfort can be achieved since for example, with an appropriate dimensioning of the protection and / or comfort layers a relatively thick soft layer, for example be arranged in the range of about 6 mm, below the seat cover can.

In particular, in conjunction with the protective and / or comfort layers, which can be arranged either on both sides or else only on one side of the heating foil, it is particularly advantageous if this protective and / or comfort layer completely off the heating foil or above covers. Furthermore, it can be provided, for example, in conjunction with an upper and a lower protective and / or comfort layer, that the upper and lower protective and / or comfort layer project beyond the heating film in defined regions at the edge and are connected to one another there. As a result, a particularly reliable protection of the heating foil is achieved.

Especially Preference is further given to a structure in which the heating foil substantially over the entire seat area and / or substantially over the entire backrest surface extends. This will be a Seat heating and / or backrest heating distributed over a large area possible. Basically, there is also the possibility in the area of the seat part and / or the backrest part only individual areas to be provided with the heating foil, which surface areas for Example heating fields form, which are more or less from each other are spaced.

To the Operating the heating foil is preferably provided that the heating foil spaced apart, preferably opposite edge and / or preferably substantially parallel to each other, conductor strips, in particular flat conductor strips, for example of a stainless steel or copper material, by means of which the heating foil electrically is contactable. Particularly preferred is the electrically activatable Heating foil electrically operated with a low voltage, wherein the low voltage in the aircraft area is about 28 V.

The Perforation of the heating foil itself can basically up be formed different ways. However, it is preferred the heating foil at least partially a uniform Perforation pattern with substantially equal and / or uniform spaced perforation holes on. These Perforation holes can, for example, a Have diameter of between 0.5 to 3 mm and / or a minimum distance from about 5 mm to adjacent perforation holes. With the perforation pattern, for example, the air passage amount be set. Basically, however, there is also the Possibility of individual areas with different perforation patterns equip.

Of Further, it is preferably provided that the seat cover in defined Areas having air passage openings, for example to allow ventilation or even to Moisture, sweat etc. from the occupants away into the seat interior to lead, where then this for example from one through the Heating foil flowing air stream are transported away. This seat cover can in the usual way of leather and / or Textile materials may be formed.

Further is in the cushion member preferably at least one fan element integrated, with the depending on the arrangement and operation of an air flow selectively generated and / or can be specifically sucked. That at least a fan element is preferably in a cushion layer integrated the pad element, in turn, the heating foil directly or indirectly, for example with interposition at least one protective and / or comfort layer and / or ventilation layer is connected and / or rests It goes without saying that itself substantially all of the aforementioned layers described above extend the entire seat part surface or backrest surface can provide adequate heating and / or ventilation of the Seat part and / or to allow the backrest. In principle, however, this can only be done in sections or by field, if this is the particular seat construction should bring with it.

The The invention will be described in greater detail below with reference to a drawing explained.

It demonstrate:

1 schematically a cross section through a vehicle seat,

2 schematically an enlarged detail of the detail A of 1 in the intake state ( 2a ) and in the blow-out state ( 2 B )

3 schematic and perspective different partial views with a heating foil according to the invention with a uniform perforation pattern, in a plan view ( 3a ) and a perspective view ( 3b ), and

4 schematically an inventive, separately handled sandwich construction.

In the 1 is a vehicle seat 1 represented, which is preferably an aircraft seat, but in principle could also be a vehicle seat of a motor vehicle or even another seating. This vehicle seat 1 has a seat part 2 and a backrest forming backrest part 3 on, each one with a seat cover 4 covered upholstery element 5 have, which cushioning element a ventilation layer 6 by, for example, a spacer fabric having a plurality of spacer threads 7 is formed ( 2a . 2 B ).

The ventilation layer 6 lies here on a cushion layer 8th of the upholstery element 5 for example, and is firmly connected to this, for example by sewing or by lamination. This upholstery layer 8th has, as is shown only schematically in the detail A, one or more recesses 9 on, in which an example here fan element 10 is included.

As this particular from the 2a is apparent, is above the ventilation layer 6 a first, lower protective and comfort layer 16 arranged, for example, has a thickness of 2 mm, which in turn with a heating foil 17 connected on the turn a second upper layer of protection and comfort 15 , for example, with a material thickness of 4 mm, rests. The first and second protective and comfort layer 15 and 16 can do this with the heating foil 17 inextricably linked by, for example, laminating, so that the first layer of protection and comfort 16 and the second layer of protection and comfort 15 the heating foil 17 preferably over the entire area of the heating foil 17 Cover from above and below or, as in the 3a shown as a plan view, at least partially overlap edge so that the two protective and comfort layers 15 . 16 can be connected to each other at the edge. This can be done for example by gluing or sewing.

The two layers of protection and comfort 15 . 16 are preferably formed of a same material, but in principle may also be made of different materials. Essential for these protective and comfort layers 15 . 16 is that they are permeable to air, so these layers of protection and comfort 15 . 16 For example, from a porous or air passage openings having foam or plastic material are formed. According to one essential aspect of the invention, the upper and lower protective and / or comfort layers, together with the heating foil arranged between them, form a sandwich structure ( 4 ), which as a separate component is easy to install in ventilated seats, as the air permeability of the sandwich allows the coexistence of the heater with any type of ventilation equipment.

From the 2a is in connection with the local air flow arrows 18 an air flow through air passage openings 19 the seat cover 4 evident, which continues through the upper protective and comfort layer 15 , continue through the perforation holes 20 the heating foil 17 and on through the lower protective and comfort layer 16 flows before passing through the ventilation layer 6 flows where the air flow is collected and over the recess 9 flows into the area of the seat underframe.

The 2 B shows schematically the reverse variant, in which the air flows upwards and, for example, even over the seat and / or backrest surface, if desired, can be discharged.

The heating foil 17 itself, as this particular from the 3a and 3b can be seen formed as a thin heating foil, which has a plurality of a uniform perforation pattern perforations 20 has, so that, as already described, the air flow 18 not just the first layer of protection and comfort 15 and the second layer of protection and comfort 16 but also unhindered by the heating foil 17 can flow.

The 3a and 3b show different representations of the multilayer pad element structure, wherein from the 3a in particular the layered composition of the first protective and comfort layer 15 starting, while the 3b the layered structure below the heating foil 17 shows.

How this particular the 3a and 3b can be further removed, has the heating foil at opposite edge regions of the seat part here, for example 2 parallel conductor strips 21 on, which, as shown here only very schematically, can be connected to a voltage source to the heating foil 17 to activate.

In conjunction with the backrest 3 However, here is shown a variant in which in the area below the seat cover 4 another ventilation layer 22 is trained in, as with the arrows 23 represented, for example, moisture, such as sweat, can penetrate. The one of the fan element 10 through the ventilation layer 6 and further through the sandwich construction of protective and comfort layers 15 . 16 or heating foil 17 guided airflow 18 then meets here on this moisture and directs them, for example, not shown here, in the further ventilation layer 22 trained channels, for example, according to the arrow 24 from. By the arrival or along the flow of air 22 In addition, a ventilation or cooling effect on the backrest side is achieved on the seat cover underside.

The Just shown example shows that there are a variety of different There are possibilities to specifically form a ventilation system.

In any case, it is shown by this further embodiment, that with the perforated heating foil according to the invention 17 Even with such a structure no obstruction of the air flows takes place, as these through the perforation holes 20 the heating foil 17 can pass through.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 102005035116 B3 [0003]
• DE 102005051738 A1 [0005]

Claims (17)

Device for conditioning a vehicle seat, in particular an aircraft seat, with a seat part ( 2 ) and / or a backrest part ( 3 ) with one, with a seat cover ( 4 ) coated cushioning element ( 5 ), which upholstery element ( 5 ) at least one heating film forming a heating layer ( 17 ) of an electrically activatable material as an electric surface heating element, which in a defined extent with a plurality, an air passage enabling perforation holes ( 20 ) is provided and which extends in a defined Sitzheizbereich over a large area over the seat part surface and / or the backrest surface. Device according to claim 1, characterized in that the cushion element ( 5 ) at least one, above and / or below the heating foil ( 17 ) arranged ventilation layer ( 6 ) by means of which an air flow, preferably one of at least one fan element ( 10 ) produced or sucked air flow, in a defined extent extensible distributed or collectable, in particular can be discharged or sucked. Device according to claim 2, characterized in that the heating foil ( 17 ) directly or indirectly, with the interposition of at least one air-permeable protective and / or comfort layer ( 16 ), with a ventilation layer ( 6 ), in particular with this insoluble, preferably by sewing and / or lamination, is connected. Device according to one of claims 1 to 3, characterized in that the seat cover ( 4 ) directly or indirectly, with the interposition of at least one air-permeable protective and / or comfort layer ( 15 ), with the heating foil ( 17 ), in particular with this insoluble, preferably by sewing and / or lamination, is connected. Device according to one of claims 1 to 4, characterized in that the heating foil ( 17 ) on the top and / or bottom at least partially an air-permeable protective and / or comfort layer ( 15 . 16 ) and / or a ventilation layer formed by a spacer knitted fabric. Device according to claim 5, characterized in that the heating foil ( 17 ) is coated on both the top and on the bottom and forms a separately handled sandwich construction. Apparatus according to claim 5 or 6, characterized in that the at least one protective and / or comfort layer ( 15 . 16 ) the heating foil ( 17 ) completely covers and / or covers, wherein the at least one protective and / or comfort layer ( 15 . 16 ) is formed from a porous or air passage openings comprising material, in particular of a foam and / or plastic material is formed. Device according to one of claims 1 to 7, characterized in that the heating foil ( 17 ) spaced apart, preferably opposite edge and / or preferably substantially parallel to each other, conductor strips ( 21 ), in particular flat conductor strips, by means of which the heating foil ( 17 ) is electrically contacted, in particular electrically operable with a low-voltage. Device according to one of claims 1 to 8, characterized in that the heating foil ( 17 ) at least in sections, preferably over substantially the entire surface, a uniform perforation pattern with substantially equal and / or equally spaced perforation holes (US Pat. 20 ) having. Device according to one of claims 1 to 9, characterized in that the perforation holes ( 20 ) have a diameter of between 0.5 to 3 mm and / or a minimum distance of 1 cm to adjacent perforation holes ( 20 ) exhibit. Device according to one of claims 1 to 10, characterized in that the heating foil ( 17 ) is formed on the basis of carbon and / or graphite, in particular by a carbon fiber-containing, thin film is formed, and / or that the heating foil ( 17 ) has a material thickness of less than 0.5 mm. Device according to one of claims 1 to 11, characterized in that the heating foil ( 17 ) extends substantially over the entire seat part surface and / or the entire backrest surface. Device according to one of claims 1 to 12, characterized gekennzzeichnet that the heating foil ( 17 ) is designed as a flexible, dimensionally stable heating layer. Device according to one of claims 1 to 13, characterized in that the heating foil ( 17 ) as a continuous heating layer, preferably made of a brushable and / or viscous heating mass with molar proportions of carbon and / or graphite, in which the perforation holes ( 20 ) are subsequently introduced. Device according to one of claims 2 to 14, characterized in that the at least a ventilation layer ( 6 ) is formed by a spacer knitted fabric, preferably by a spacer knitted fabric having a multiplicity of spacer threads (US Pat. 7 ). Device according to one of claims 1 to 15, characterized in that the seat cover ( 4 ) is formed of leather and / or textile and in defined areas air passage openings ( 19 ) having. Device according to one of claims 2 to 16, characterized in that the at least one fan element ( 10 ) in a cushion layer ( 8th ) of the padding element ( 5 ) is integrated, on which the heating foil ( 17 ) and / or a ventilation layer ( 6 ) is directly or indirectly connected or connected to this.

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