Patent Publication Number: US-2021162899-A1

Title: Surface temperature-controlling device

Description:
The invention relates to a surface temperature-controlling device, in particular for use in vehicles, comprising a first air-distributing layer which has multiple air inlets extending through the first air-distributing layer and multiple air outlets extending through the first air-distributing layer, and a second air-distributing layer which fluidically connects air inlets and air outlets of the first air-distributing layer. 
     The invention also relates to a resting area, in particular for use in the interior of a vehicle, with a temperature-adjustable resting surface and a surface temperature-controlling device configured to adjust the temperature of the resting surface. 
     Increasing expectations with regard to the interior comfort of vehicles have led to more and more temperature-controlled surfaces being installed in the area of the vehicle seats. Temperature-controlling devices are used for controlling the temperature of surfaces which are in contact with the driver or other occupants of the vehicle during the use of the vehicle. Temperature-controlled surfaces thus significantly increase the climate comfort within a vehicle. 
     However, it has been shown that the solutions known so far are only of limited suitability for practical use or result in certain comfort impairments. Surface temperature-controlling devices are known, for example, in which preheated air is introduced into a temperature-controlled area through a single inlet and is discharged out of the temperature-controlled area through a single outlet. The resulting unidirectional flow direction of the preheated air results in practice in an uneven temperature distribution within the temperature range, which the user perceives as having a negative impact on comfort. 
     In addition, surface temperature-controlling devices are known in which temperature control lines or tubes, for example made of plastic or metal, are used below the surface to be temperature-controlled in order to implement a surface temperature control. The respective solutions regularly lead to comparatively high costs and a high weight. 
     In addition, heat-conducting inserts and heat distribution devices are known, which are arranged below the surface to be temperature-controlled and are connected to a temperature-controlling device. However, the area of application of the corresponding solutions is extremely limited, so they cannot be used in a large number of areas of application. 
     The object on which the invention is based is to at least partially overcome the disadvantages of the surface temperature-controlling devices known from prior art. In particular the temperature distribution is to be improved and the temperature control time is to be shortened. 
     The object on which the invention is based is achieved by a surface temperature-controlling device of the type mentioned at the outset in which the air inlets of the surface temperature-controlling device according to the invention are configured to introduce preheated air into the second air-distributing layer and in which the air outlets are configured to discharge air from the second air-distributing layer. 
     The invention makes use of the knowledge that the fluidic connection of multiple air inlets and multiple air outlets produces a multidirectional flow of the preheated air within the second air-distributing layer, which results in an extremely uniform temperature distribution. As a result of the considerably shortened flow paths for the preheated air, the time it takes to reach the set target temperature is shortened as well. Furthermore, the surface temperature-controlling device according to the invention allows the use of comparatively thin material layers as the top material layer. Due to the distribution of the air flow to multiple air inlets and multiple air outlets, a back pressure is generated that is lower compared to the known solutions, so the design is simplified and the susceptibility to damage is reduced. 
     The second air-distributing layer can fluidically connect individual, several or all air inlets to individual, several or all air outlets. The air inlets and air outlets are preferably arranged adjacent to each other and/or extend in the same direction. The surface temperature-controlling device can be designed as a cooling device or a heating device or a combined cooling/heating device. The surface temperature-controlling device thus allows for comprehensive air conditioning. 
     In a preferred embodiment of the surface temperature-controlling device according to the invention, the second air-distributing layer is designed in such a way that air flows that run transversely to the air inlets and/or air outlets are created inside the second air-distributing layer. The flow directions resulting in the second air-distributing layer are preferably arranged in a flow plane that is orthogonal to the flow direction within the air inlets and/or air outlets. 
     In a further embodiment of the surface temperature-controlling device according to the invention, the first air-distributing layer has a surface which faces the second air-distributing layer and which comprises a plurality of air inlet openings and air outlet openings. The air inlet openings are part of the air inlets. The air outlet openings are part of the air outlets. The surface of the first air-distributing layer facing the second air-distributing layer preferably runs parallel to the flow plane in which the flow directions of the preheated air lie within the second air-distributing layer. 
     In addition, a surface temperature-controlling device according to the invention is preferred in which the cross section of several or all of the air inlets and/or air outlets and/or several or all of the air inlet openings and/or air outlet openings have different sizes, in particular different diameters. The different sizes make it possible to influence the flow intensity and the flow direction within the second air-distributing layer. Furthermore, this allows the implementation of specific flow patterns or the generation of local flow areas that have an increased or a reduced air throughput. Alternatively, the cross section of several or all of the air inlets and/or air outlets and/or several or all of the air inlet openings and/or air outlet openings can have the same size, in particular the same diameter. A uniform flow pattern can thus be achieved by a corresponding arrangement of the air inlets and air outlets. 
     A surface temperature-controlling device according to the invention in which the cross section of several or all of the air inlets and/or air outlets and/or several or all of the air inlet openings and/or air outlet openings have different shapes is advantageous as well. The cross sections of the air inlets and/or the air outlets and/or the air inlet openings and/or the air outlet openings may be round or oval or oblong, triangular, square, pentagonal or polygonal. Alternatively, the cross section of several or all of the air inlets and/or air outlets and/or several or all of the air inlet openings and/or air outlet openings may also have the same shape. 
     In another embodiment of the surface temperature-controlling device according to the invention, the number of air inlets differs from the number of air outlets. The number of air inlets is greater than the number of air outlets, for example. Alternatively, the number of air outlets is greater than the number of air inlets. The flow pattern within the second air-distributing layer can also be influenced by the number and arrangement of the air inlets and air outlets. Alternatively, the number of air inlets and the number of air outlets can also be the same. 
     In a further development of the surface temperature-controlling device according to the invention, the air inlets, the air outlets, the air inlet openings and/or the air outlet openings are arranged evenly or unevenly. Preferably, several or all of the air inlets and/or air inlet openings are arranged in one or more rows. The rows of air inlets and/or air inlet openings preferably run parallel to one another. The air outlets and/or the air outlet openings are preferably arranged in one or more rows. The rows of air outlets and/or air outlet openings preferably run parallel to one another. An embodiment is particularly preferred in which the one or more rows of air inlets and/or air inlet openings run parallel to the one or more rows of air outlets and/or the air outlet openings. 
     In another preferred embodiment of the surface temperature-controlling device according to the invention, the first air-distributing layer and/or the second air-distributing layer comprise flow constrictions which are configured to influence the air flow and to cause a change in pressure. The flow restrictions create flow resistances that change the air flow. This results in a change in the flow rate and/or the pressure. 
     In another embodiment of the surface temperature-controlling device according to the invention, a group of air outlets is assigned to several or all of the air inlets, the air outlets of a group being evenly spaced apart and/or evenly distributed around the air inlet to which the group of air outlets is assigned. The individual groups of air outlets preferably have the same number of air outlets that are assigned to an air inlet. 
     In addition, a surface temperature-controlling device according to the invention in which a group of air inlets is assigned to several or all of the air outlets, wherein the air inlets of a group are evenly spaced apart and/or evenly distributed around the air outlet to which the group of air inlets is assigned is advantageous. The individual groups of air inlets preferably have the same number of air inlets that are assigned to an air outlet. 
     Air inlets and/or air outlets arranged in series preferably have the same shape and/or size, but the air inlets and/or air outlets of different rows can differ in size and/or shape. individual rows preferably have a larger number of air outlet openings or air inlet openings than other rows. Alternatively, air inlets and/or air outlets arranged in series have different shapes and/or sizes. 
     In addition, a surface temperature-controlling device according to the invention in which several or all of the external adjacent air inlets, air outlets, air inlet openings and/or air outlet openings have a smaller distance from one another and/or a different size, in particular a different diameter, than the internal air inlets, air outlets, air inlet openings and/or air outlet openings is preferred. The smaller distance from each other increases the number of outer air inlets, air outlets, air inlet openings and/or air outlet openings. The outer air inlets, air outlets, air inlet openings and/or air outlet openings can be larger or smaller than the inner air inlets, air outlets, air inlet openings and/or air outlet openings. 
     In another embodiment of the surface temperature-controlling device according to the invention, several or all of the air inlets within the first air-distributing layer and/or on the side of the first air-distributing layer facing away from the second air-distributing layer are fluidically connected to one another. Alternatively or additionally, several or all of the air outlets within the first air-distributing layer and/or on the side of the first air-distributing layer facing away from the second air-distributing layer can be fluidically connected to one another. The air inlets can be connected to one another via bypass lines within the first air-distributing layer. The air outlets within the first air-distributing layer can be connected to one another via bypass lines. One or more air inlet ports and/or one or more air outlet ports can be arranged on the side of the first air-distributing layer facing away from the second air-distributing layer. Several or ail of the air inlets can be connected to the air inlet ports. Several or all of the air outlets can be connected to the air outlet ports. The provision of bypass lines or corresponding air inlet and/or air outlet ports leads to a redistribution of the air flow when individual air inlets or air outlets are closed, for example due to a deformation. This way, a uniform temperature control of the surface can also be ensured if no air flow forms within individual air inlets and/or air outlets. 
     In particular, groups of air inlets are fluidically connected to an air inlet port. The air inlets of a group of air inlets thus supply air to the second air-distributing layer in parallel from the air inlet port assigned to the respective group of air inlets. In particular, groups of air outlets are fluidically connected to an air outlet port. The air outlets of a group of air outlets thus discharge air in parallel from the second air-distributing layer in the direction of the air outlet port assigned to the respective group of air outlets. The parallel air supply to the second air-distributing layer via several air inlets and the parallel air removal from the second air-distributing layer via several air outlets allow the supply of the second air-distributing layer with heated or cooled air to be maintained even if individual air inlets and/or air outlets are temporarily or permanently closed, for example due to a deformation. Such deformation can occur, for example, due to mechanical stress or contamination. 
     In a further development of the surface temperature-controlling device according to the invention, air-permeable material is arranged in or in front of the air inlet openings and/or the air outlet openings. The air-permeable material prevents the formation of depressions on the surface and/or any local sagging of the surface. The material arranged in or in front of the air inlet openings and/or the air outlet openings is preferably non-elastic or can have a fiber structure, for example made of plastic or fiberglass fibers. The material can be glued or welded on. The material arranged in or in front of the air inlet openings and/or the air outlet openings can also be an integral part of an air distribution body of the first air-distributing layer. In addition, the air inlets and/or air outlets can be arranged below stiffening elements. The stiffening elements can be formed by an additional film heating system, in particular a graphite film heating system. 
     In another embodiment of the surface temperature-controlling device according to the invention, the first air-distributing layer and the second air-distributing layer are integrated in a flow circuit. Air circulates within the flow circuit so that the temperature-controlled air is used repeatedly. A corresponding flow circuit is advantageous, in particular, if the ambient temperature and the target temperature of the surface to be temperature-controlled deviate greatly from one another, i.e., if a larger temperature difference has to be bridged. When using air-controlled air several times, a comparatively fast temperature adjustment of surfaces can be implemented. Furthermore, the use of a flow circuit reduces the energy required for the corresponding temperature control processes. 
     The surface temperature-controlling device according to the invention is further advantageously developed in that the flow circuit has a condensation removal device which is configured to remove condensation from the air circulating in the flow circuit. The condensation removal device can comprise, for example, nonwoven fabric through which the air flows and reduces the air humidity. A corresponding condensation removal device prevents or at least reduces the freezing or clogging of heat exchange surfaces, heat pump devices or thermoelectric devices, which comprise Peltier elements, for example. 
     In addition, a surface temperature-controlling device according to the invention in which the first air-distributing layer and/or the second air-distributing layer is formed from an air-permeable material or which have an air-permeable material in some areas is advantageous. The air-permeable material can be spacer fabric. The air-permeable material can be a nonwoven fabric as well. It can also be a porous material. The first air-distributing layer and/or the second air-distributing layer can be formed from a soft, in particular elastically deformable, material or, in some areas, comprise a soft, in particular elastically deformable, material. 
     A surface temperature-controlling device according to the invention in which the first air-distributing layer is formed by an air distribution body which is formed from a hard shell material, in particular from plastic, is also preferred. The air distribution body forms each of the air inlets and/or air outlets. The air distribution body is preferably formed in one piece. By using an appropriate air distribution body, the number of parts is considerably reduced, and the manufacture of the surface temperature-controlling device is significantly simplified. The reduced number of parts also reduces the susceptibility to damage and increases the service life. 
     In addition, a surface temperature-controlling device according to the invention in which a separating layer is arranged between the first air-distributing layer and the second air-distributing layer, which preferably has a higher rigidity than the first air-distributing layer and/or the second air-distributing layer is advantageous. In particular, the separating layer comprises air passages which are fluidically connected to the air inlets and/or air outlets of the first air-distributing layer. The separation layer increases the level of stiffness, so that comparatively soft materials can also be used for the first air-distributing layer and/or the second air-distributing layer. The use of a comparatively rigid separation layer also prevents the air supply to the first air-distributing layer from being cut off by local pressure. The rigid separating layer effectively avoids a deformation and thus a closing of the air inlets and air outlets. 
     In a further embodiment of the surface temperature-controlling device according to the invention, the first air-distributing layer, the second air-distributing layer and/or the separating layer is designed to be light-permeable, transparent, translucent, light-impermeable and/or opaque. If the first air-distributing layer, the second air-distributing layer and/or the separating layer is designed to be light-permeable or transparent, the air inlets and air outlets can be checked visually. In particular, display elements such as LEDs can be arranged in, on or under the first air-distributing layer, the second air-distributing layer and/or the separation layer. By making these layers light-permeable, translucent and/or transparent, the display elements can be seen from the outside, in particular on a resting surface. Furthermore, it can be advantageous to optically hide the first air-distributing layer, the second air-distributing layer, the separating layer and/or other components of the surface temperature-controlling device so that they cannot be seen from the outside. In particular, display elements such as LEDs can be positioned under the first air-distributing layer or in the separation layer, which are visible through the cover of the resting surface over the second air-distributing layer. If the first air-distributing layer, the second air-distributing layer and/or the separating layer is translucent, a dispersion of punctiform light sources can be implemented. 
     In addition, a surface temperature-controlling device according to the invention in which the first air-distributing layer, the second air-distributing layer and/or the separating layer is designed to be sound-absorbing and/or vibration-absorbing is advantageous. The noise level in the interior of the vehicle can be reduced by an appropriate sound absorption, which further increases the comfort a use of the vehicle. The vibration absorption can reduce vibrations that are caused, for example, by the air currents. Corresponding vibrations are no longer perceived by a user or at least perceived as non-disturbing, so this also increases the convenience of use. 
     A surface temperature-controlling device according to the invention in which the first air-distributing layer, the second air-distributing layer and/or the separating layer has a defined capacity and/or comprise electronic devices is also advantageous. The electronic devices can be electrical conductors, printed circuit boards and/or electrical detection devices. The electrical detection devices can, for example, be temperature, pressure and/or light detection devices or sensors. 
     A surface temperature-controlling device according to the invention is also preferred if it has a temperature-controlling surface to be temperature-controlled, which is coupled to the second air-distributing layer in a heat-transferring manner. The surface to be temperature-controlled and the second air-distributing layer are thus in thermal contact. The heat-transferring coupling allows for a heat exchange between the second air-distributing layer and the surface to be temperature-controlled. The air flow preferably forms in the second air-distributing layer directly below control surface to be temperature-controlled. The air flow mainly has directions of flow which lie in a flow plane that runs parallel to the surface to be temperature-controlled. As a result, a uniform surface temperature is achieved on the surface to be temperature-controlled. Alternatively, temperature patterns, such as temperature gradients or local temperature differences, can also be generated on the surface. 
     In another embodiment of the surface temperature-controlling device according to the invention, the material layer supporting the surface to be temperature-controlled is made of silicone or graphite. The surface of the surface temperature-controlling device can then be covered with leather or fabric in which case the leather or fabric cover then serves as the resting surface. 
     In addition, a surface temperature-controlling device in which an electric heating device is arranged between the second distribution layer and the material layer to be temperature-controlled is preferred. Alternatively, an electric heating device is integrated into the material layer supporting the surface to be temperature-controlled. The electric heating device can be, for example, a film heating system, in particular a graphite film heating system. The heating power of the surface temperature-controlling device can be further increased by the electric heating device. in addition, the electrical heading device can reduce the required heating times. 
     The surface temperature-controlling device according to the invention is further developed by a temperature control system which is configured to temperature-control air before it is introduced into the air inlets of the first air-distributing layer. As an alternative or in addition, the surface temperature-controlling device has a flow generator which is configured to initiate the flow of the temperature-controlled air. The temperature control system can comprise one or more thermoelectric devices. The thermoelectric devices can be designed as Peltier elements or comprise Peltier elements. The flow generator can be designed as a fan. The one or more thermoelectric devices preferably have a service side and an exhaust air side. The service side is used to temperature-control the air to be introduced into the first air-distributing layer and the second air-distributing layer. The exhaust air side of the one or more thermoelectric devices can be equipped with an additional temperature control. if the temperature control system comprises a plurality of thermoelectric devices, the temperature-controlling areas of the thermoelectric devices are preferably connected in series so that the air flows sequentially through the temperature-controlling areas of the thermoelectric devices. The exhaust air areas of the thermoelectric devices are preferably connected in parallel. Because the air flows sequentially through the temperature-controlled area of the thermoelectric devices and because the exhaust air areas of the thermoelectric devices are connected in parallel. the temperature level on the exhaust air side of the thermoelectric devices is lower during cooling operation, as a result of which it is possible to cool the service air of the thermoelectric devices to even lower temperatures. In addition, the parallelization of the exhaust air areas of the thermoelectric devices reduces the back pressure compared to an alternative sequential flow through the exhaust air areas of the thermoelectric devices. This allows for a larger air flow and/or quieter operation because the flow generator(s) can then work at a lower speed. The parallelization of the exhaust air areas of the thermoelectric devices also allows the use of only one flow generator instead of two individual flow generators to generate an exhaust air flow. By separating the service air and the exhaust air flow, different flow generators can be used, which can be operated in an optimized manner, for example with regard to the respective back pressure and/or volume flow. Furthermore, both flow generators can be controlled independently, which facilitates a more precise control or regulation of the overall thermal system. As an alternative to the exhaust air flow, a liquid can also flow through the exhaust air side. 
     In a further embodiment of the surface temperature-controlling device according to the invention, this device comprises a control device which is configured to control the temperature-controlling system and/or the flow generator. The control device makes it possible, for example, to set a target temperature on the surface to be temperature controlled. 
     The temperature-controlling device and/or the flow generator can be controlled on the basis of the temperature difference between the target temperature and the ambient temperature. The control device also allows a suitable volume flow and/or a suitable flow rate by setting the flow generator. 
     The problem addressed by the invention is further solved by a rest of the type described above, wherein the surface temperature-controlling device of the vehicle seat according to the invention is designed in accordance with one of the embodiments described above. With regard to the advantages and modifications of the rest according to the invention, reference is made to the advantages and modifications of the surface temperature-controlling device according to the invention. The rest can, in particular, be an armrest of a vehicle. 
    
    
     
       Below, preferred embodiments of the invention are explained and described in more detail with reference to the attached drawings. 
         FIG. 1  shows parts of a rest according to the invention in a perspective view; 
         FIG. 2  shows an air distribution body of a surface temperature-controlling device according to the invention in a plan view; 
         FIG. 3  shows a further air distribution body of a surface temperature-controlling device according to the invention in a plan view; 
         FIG. 4  shows a further air distribution body of a surface temperature-controlling device according to the invention in a plan view; 
         FIG. 5  shows an exemplary embodiment of a surface temperature-controlling device according to the invention in a schematic representation; 
         FIG. 6  shows a heating device of a surface temperature-controlling device according to the invention in a plan view; 
         FIG. 7  shows the heating device shown in  FIG. 6  with an air-distributing layer in a plan view; 
         FIG. 8  shows the parts of the surface temperature-controlling device shown in  FIG. 7  with a further air-distributing layer in a plan view; 
         FIG. 9  shows the parts of the surface temperature-controlling device shown in  FIG. 8  with air inlet ports and air outlet ports in a plan view; 
         FIG. 10  shows a rest according to the invention, which comprises the parts of the surface temperature-controlling device shown in  FIG. 9 ; 
         FIG. 11  shows a temperature control system of a surface temperature-controlling device according to the invention in a schematic representation; 
         FIG. 12  shows an alternative temperature control system of a surface temperature-controlling device according to the invention in a schematic representation; 
         FIG. 13  shows an exemplary embodiment of a surface temperature-controlling device according to the invention in a schematic representation; and 
         FIG. 14  shows an air-distributing layer of a surface temperature-controlling device according to the invention in a plan view. 
     
    
    
       FIG. 1  shows a rest  100  designed as an armrest, which is installed in the interior of a vehicle. The rest  100  comprises a surface temperature-controlling device  10 , which is partially shown. The surface temperature-controlling device  10  is used to temperature-control a surface of the rest, not shown. 
     The surface temperature-controlling device  10  has a temperature control system  48 , wherein the temperature control system  48  pre-heats or pre-cools air and makes the pre-heated or pre-cooled air available to the air-distributing layer  14  shown. The air-distributing layer  14  has multiple air inlets  18  extending through the air-distributing layer  14  and multiple air outlets  22  extending through the air-distributing layer  14 . The air-distributing layer  14  has a surface  12  facing the surface of the rest, not shown, which comprises a plurality of air inlet openings  16  and air outlet openings  20 . The air inlet openings  16  are components of the respective air inlets  18 . The air outlet openings  20  are components of the respective air outlets  22 . 
     A further, not shown, air-distributing layer  34  is arranged above the air-distributing layer  14  and fluidically connects the air inlets  18  and the air outlets  22  of the air-distributing layer  14  to one another. Pre-heated or pre-cooled air can thus be introduced into the air-distributing layer  34  through the air inlets  18  and discharged again from the air-distributing layer  34  through the air outlets  22 . 
       FIG. 2  shows an air distribution body  24 , which comprises a first air-distributing layer  14 . Thee air distribution body  24  is formed from a hard shell material, namely from plastic. The air distribution body  24  forms each of the air inlets  18  and/or air outlets  22  as air ports. In the area of the surface  12 , the air inlets  18  and the air outlets  22  have corresponding air inlet openings  16   a - 16   n  and air outlet openings  20   a - 20   n.  The air inlet openings  16   a - 16   n  and the air outlet openings  20   a - 20   n  are distributed in a substantially uniform manner. A group of air outlet openings  20   a - 20   n  is assigned to each of the air inlet openings  16   a - 16   n,  the air outlet openings  20   a - 20   n  being arranged in a group evenly spaced apart from each other and evenly distributed around the air inlet opening  16   a - 16   n,  which is assigned to the group of air outlet openings  20   a - 20   n.  The air outlet openings  20   a,    20   b,    20   h,    20   i  are evenly arranged around the air inlet opening  16   a  and spaced at an equal distance from the same. 
     Furthermore. a group of air inlet openings  16   a - 16   n  is assigned to each of the air outlet openings  20   a - 20   n,  wherein the air inlet openings  16   a - 16   n  are arranged in a group that is evenly spaced from and evenly distributed around the air outlet opening  20   a - 20   n,  which is assigned to the group of air inlet openings  16   a - 16   n.  The air inlet openings  16   b,    16   c,    16   i,    16   j,  for example, are evenly arranged around the air inlet opening  20   j  and are at an equal distance from the same. 
       FIG. 3  also shows an air distribution body  24  which comprises a plurality of air inlets  18  and a plurality of air outlets  22  which have corresponding air inlet openings  16  or air outlet openings  20  in the area of the surface  12 . 
     To adapt the back pressure and the air flow, the air inlets  18  and the air outlets  22  are arranged in four rows that run essentially parallel to one another. The lower three rows each have an identical number of air inlets  18  and/or air outlets  22 . The upper row has approximately twice the number of air inlets  18  or air outlets  22 . Thus, the in-row distance between the openings in the lower three rows is greater than the in-row distance between the openings in the top row. 
     In addition, the air inlet openings  16  and air outlet openings  20  have different sizes or more specifically different diameters. The diameter changes along the respective row arrangement with the diameter decreasing in the present case from left to right. This configuration allows the precise setting of an intended surface temperature or heat flow distribution. 
       FIG. 4  shows that the air inlets  18  and air outlets  22  are assigned to the rows  26   a,    26   b,    28   a,    28   b,  which run essentially parallel to one another. The rows  26   a,    26   b  comprise the air inlets  18 . The rows  28   a,    28   b  comprise the air outlets  22 . The arrows between the rows  26   a,    26   b,    28   a,    28   b  show that air flows transversely to the air inlets  18  and the air outlets  22  within the air-distributing layer  34  adjoining the surface  12 . The air inlets  18  and the air outlets  22  of the respective rows  26   a,    26   b,    28   a,    28   b  are fluidically connected to corresponding air inlet ports or air outlet ports on the underside of the air distribution body  24 , via which air is made available to the air inlets  18 , and air is discharged from the air outlets  22 . 
       FIG. 5  shows a surface temperature-controlling device  10  with a first distribution layer  14 , which has multiple air inlets  18   a,    18   b  extending through the air-distributing layer  14  and multiple air outlets  22   a,    22   b  extending through the first air-distributing layer  14 . Furthermore, the surface temperature-controlling device  10  comprises a second air-distributing layer  34 , which fluidically connects the air inlets  18   a,    18   b  and the air outlets  22   a,    22   b  of the first air-distributing layer  14 . 
     The air inlets  18   a,    18   b  introduce the pre-heated or pre-cooled air into the second air-distributing layer  34 , with the air outlets  22   a,    22   b  discharging air from the second air-distributing layer  34 . 
     The pre-heated or pre-cooled air is made available to the air inlets  18   a,    18   b  via the air inlet ports  30   a,    30   b.  The air discharged through the air outlets  22   a,    22   b  is transported away through the air outlet ports  32   a,    32   b.    
     A separating layer  36  is arranged between the first air-distributing layer  14  and the second air-distributing layer  34  and has a higher rigidity than the air-distributing layers  14 ,  34 . The separating layer  36  has corresponding air passages in the area of the air inlets  18   a,    18   b  and air outlets  22   a,    22   b.    
     The surface temperature-controlling device  10  comprises a material layer  40  made of silicone, which supports the surface  38  to be temperature-controlled. The surface  38  to be temperature-controlled is coupled to the second air-distributing layer  34  in a heat-transferring manner. The surface  38  of the surface temperature-controlling device  10  is covered with a rest cover  102 , with the rest cover  102  of the rest  100  comprising the resting surface  104 . 
     An electric heating device  42  is integrated in the material layer  40 , which is designed as a film heating system and via which the heating power of the surface temperature-controlling device  10  is increased even further. 
       FIG. 6  shows a corresponding electric heating device  42 , which is designed as a film heating system. The heating device  42  has flat heating tracks which can be supplied with current via the connecting cables  445 ,  44   b.  The heating tracks form a heating circuit. They are bent several times, and some have a meandering structure. 
     The heating device  42  is integrated in a transparent material layer  40 . 
       FIG. 7  shows the transparent material layer  40  and the heating device  42  in combination with an air-distributing layer  34 . in the course of the proportion of the surface temperature-controlling device  10 , the air-distributing layer  34  is glued to the material layer  40 , which comprises the heating device  42 . 
       FIG. 8  shows a further step in the manufacturing process of the surface temperature-controlling device  10 . A further air-distributing layer  14  has now been applied to the air-distributing layer  34  and has a multiplicity of air inlets  18  and air outlets  22 . The air-distributing layer  34  shown in  FIG. 7  is air-permeable so that the air-distributing layer  34  fluidically connects the air inlets  18  and the air outlets  22  of the air-distributing layer  14 . 
       FIG. 9  shows air inlet ports  30   a,    30   b  and air outlet ports  32   a,    32   b,  via which pre-heated or pre-cooled air can be made available to the air inlets  18 , and air can be removed from the air outlets  22 . A flow resistance  46  is shown by way of example, via which the air flow within the air inlet ports  30   a,    30   b  or the air outlet ports  32   a,    32   b  can be influenced. 
       FIG. 10  shows a rest  100  which comprises a surface temperature-controlling device  10 . The surface temperature-controlling device  10  of the rest  100  corresponds to the surface temperature-controlling device  10 , the configuration of which was shown in  FIG. 6 - FIG. 9 . The rest  100  accordingly comprises a rest cover  102  with a temperature-adjustable resting surface  104 . 
       FIG. 11  shows a temperature control system  48  of a surface temperature-controlling device  10  according to the invention. The temperature control system  48  is used for heating or cooling air before it is introduced into the air inlets  18  of the air-distributing layer  14 . 
     The temperature control system  48  has a service air flow  66  and an exhaust air flow  64 . 
     The service air flow  66  is generated by a flow generator  58 , which draws in air from the environment  108 . The flow generator  58  is designed as a fan. Furthermore, the temperature control system  48  has a plurality of thermoelectric devices  50   a,    50   b,  each of which has a service side  52   a,    52   b  and an exhaust air side  54   a,    54   b,  With regard to the service air flow  66 , the thermoelectric devices  50   a,    50   b  are connected in series so that the air to be temperature-controlled first flows through the temperature-control area of the thermoelectric device  50   a  and then through the temperature-controlled area of the thermoelectric device  50   b  before the air temperature-controlled in this way is brought to the air-distributing layers  14 ,  34 . 
     The exhaust air flow  64  is generated by the flow generator  68 , which is also designed as a fan. The flow generator  68  draws in air from the environment  108 . The exhaust air flow is divided upstream of the thermoelectric devices  50   a,    50   b  so that the thermoelectric devices  50   a,    50   b  are connected in parallel with respect to the exhaust air flow  64 . The exhaust air flow  64  removes waste heat from the thermoelectric devices  50   a,    50   b.  The exhaust air is finally brought to an exhaust air outlet  70 . 
       FIG. 12  shows an alternative temperature control system  48  in which the first air-distributing layer  14  and the second air-distributing layer  34  are integrated in a flow circuit  62 . The air circulation within the flow circuit  62  is generated by the flow generator  58 , which is designed as a fan. Arranged in front of the flow generator  58  is a condensation removal device  56  which extracts moisture from the circulating air with a non-woven fabric. Furthermore, the temperature control system  48  comprises two thermoelectric devices  50   a,    50   b,  the service sides  52   a,    52   b  of which are also integrated in the flow circuit  62 . The exhaust air sides  54   a,    54   b  are connected in a heat-transferring manner to a heat exchanger  60  through which a flow of liquid  64  is guided in order to remove waste heat. 
     Seals  106   a,    106   b  are provided in the transition to the rest  100  so that an unintentional escape of air from the flow circuit  62  is prevented. 
       FIG. 13  shows a further exemplary embodiment of a surface temperature-controlling device  10 , which likewise has a first air-distributing layer  14  and a second air-distributing layer  34 . The second air-distributing layer  34  is designed as spacer fabric so that the second air-distributing layer  34  fluidically connects the air inlets  18   a,    18   b  and the air outlets  22   a,    22   b  of the first air-distributing layer  14  to one another. 
     The pre-heated or pre-cooled air is supplied to the air inlets  18   a,    18   b  via the air inlet ports  30   a,    30   b,  The air discharged through the air outlets  22   a,    22   b  is discharged via the air outlet ports  32   a,    32   b.    
       FIG. 14  shows an air-distributing layer  14  with three groups  72   a - 72   c  of air inlets and two groups  74   a,    74   b  of air outlets. The air inlets of the groups  72   a,    72   b  are located outside and are arranged in an L-shape. The groups  74   a,    74   b  each have a number of air outlets. Group  72   c  has a series of air inlets. The air inlets and air outlets of groups  74   a,    74   b,    72   c  run substantially parallel to one another. 
     REFERENCE SIGNS 
     
         
           10  Surface temperature-controlling device 
           12  Surface 
           14  First air-distributing layer 
           16 ,  16   a - 16   n  Air inlet openings 
           18 ,  18   a,    18   b  Air inlets 
           20 ,  20   a - 20   n  Air outlet openings 
           22 ,  22   a,    22   b  Air outlets 
           24  Air distribution body 
           26   a,    26   b  Rows of air inlets 
           28   a,    28   b  Rows of air outlets 
           30   a,    30   b  Air inlet ports 
           32   a,    32   b  Air outlet ports 
           34  Second air-distributing layer 
           36  Separating layer 
           38  Surface to be temperature controlled 
           40  Material layer 
           42  Heating device 
           44   a,    44   b  Connection cable 
           46  Flow resistance 
           48  Temperature control system 
           50   a,    50   b  Thermoelectric devices 
           52   a,    52   b  Use sides 
           54   a,    54   b  Exhaust air sides 
           56  Condensation removal device 
           58  Flow generator 
           60  Heat exchanger 
           62  Flow circuit 
           64  Exhaust air flow or liquid flow 
           66  Service air flow 
           68  Flow generator 
           70  Exhaust air outlet 
           72   a - 72   c  Groups of air inlets 
           74   a,    74   b  Groups of air outlets 
           100  Rest 
           102  Rest cover 
           104  Rest surface 
           106   a,    106   b  Seats 
           108  Environment