• 专利附录
  • 专利说明
  • 权利要求
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    • 专利摘要:
    The invention relates to a domestic appliance component (3), which comprises a base element, wherein at least one surface of the base element is partially or completely covered with a functional coating. The coating comprises at least one organically modified silicate (ormosil). Furthermore, the invention relates to a method for coating a domestic appliance component (3), a household appliance comprising at least one household appliance component (3), and the use of at least one organically modified silicate (ormosil) for partially or completely coating a surface of a base element of a household appliance component (3). (Machine-translation by Google Translate, not legally binding)
    公开号:ES2597749A1
    申请号:ES201531061
    申请日:2015-07-20
    公开日:2017-01-20
    发明作者:María Carmen Artal Lahoz；Mehmet Bayindir；Miguel Ángel BUNUEL MAGDALENA；Cristina CASTRO LAPETRA；Bihter DAGLAR；Tugba DISPINAR；Elena MARTÍNEZ SOLANAS；Javier Sanz Naval；Adem YILDIRIM；Murat YÜCEL；Dilara ÖKSÜZ
    申请人:BSH Hausgeraete GmbH；BSH Electrodomesticos Espana SA；
    IPC主号:
    专利说明:

     COMPONENT OF DOMESTIC APPLIANCE THAT INCLUDES A BASE ELEMENT WITH A FUNCTIONAL COATING DESCRIPTION The invention refers to a household appliance component, which comprises a base element, where at least one surface of the base element is partially or completely covered with a coating functional. In addition, the invention relates to a method for coating a household appliance component, and a household appliance. Energy efficiency and the possibility of cleaning are issues that are becoming increasingly important in all household appliances. In particular, the drying capacity 10 is a key factor that consists in the elimination of water present in the domestic appliance due to the condensation of the water on different components of the domestic appliance during the use of the domestic appliance. The household appliance components normally comprise a base element, where at least one surface of the base element is partially or completely covered with a functional coating to reduce or promote water condensation and to improve the possibility of cleaning the household appliance. Problems related to condensation, which are described as "perspiration" by customers, are present, for example, in domestic refrigerators. This problem is caused by several reasons, such as storing products without a lid. 20 Mainly in the humid areas of a refrigerator, small drops of condensed water can form and drip on food, causing shorter expiration times. The condensation of small drops of water on the surface of components such as linings and interior walls can also affect the performance of a refrigerator. In dishwashing machines, complaints focus on the 25 water stains that form on the dishes after the washing process. In contrast to this, low wettability can impair the possibility of cleaning household appliances such as cooking fields. However, the functional coatings known at present still show a fairly low yield with respect to the avoidance of such problems related to condensation in household appliances. 30The present invention solves the technical problem of providing a household appliance component with better water condensation properties. Another technical problem that the invention solves is to provide a method for coating a household appliance component with a coating that has better condensation properties. Also, the present invention also solves the technical problem of providing a household appliance comprising at least one household appliance component with better condensation properties. These problems are solved by a household appliance component, a method for coating a household appliance component, a domestic appliance, and a use according to the independent claims. Advantageous developments of the invention are specified in the respective dependent claims 10, wherein the advantageous developments of the household appliance component are to be considered advantageous developments of the household method and apparatus, and vice versa. A first aspect of the invention refers to a household appliance component, which comprises a base element, where at least one surface of the base element is partially or completely covered with a functional coating. According to the invention, better condensation properties of the household appliance component are achieved when the coating comprises at least one organically modified silicate (ormosil). Organically modified silicate coatings show unique properties, being between organic polymers and silica, since they can be resistant against atmospheric conditions such as silicas and flexible as polymers, and are not as fragile as silica coatings thanks to their flexibility, and they are very important for the production of durable coatings due to their exceptional mechanical properties. Another characteristic of ormosil coatings is their good adhesion to many different materials, so they can be applied on various surfaces, such as plastic materials (for example, polystyrene or polypropylene), metals, glasses, silicon, paper, cardboard, stones, and wood without an additional binder. Ormosiles can have a very high water repellency and, therefore, effectively prevent water condensation on the coated areas of the base element, for example, on walls of a refrigerator. This improvement of the condensation properties leads to the reduction of the temperature necessary for drying household appliances such as dryers, washing machines, and dishwashing machines, as well as the reduction of the time required for the drying process. Consequently, the energy consumption necessary to effect such a drying process is reduced, for example, in dishwashing machines and in dryers. Alternatively or additionally, the ormosiles may have a 35Very high affinity with water to effectively prevent water condensation on uncoated areas, for example, on dishes placed inside a dishwasher. Thus, the coating effectively repels hydrophobic components such as oil and food debris, thus simplifying the cleaning process of the different components of the household appliance. Generally, the wettability or non-wettability of such coated surfaces is not affected by the underlying substrate material or by the pH of the water. In addition, ormosil coatings are durable and stable, both mechanically and chemically. In general, the base element coating may be composed of one or more ormosiles, and may also comprise one or more additional components. The surface of the base element may be only partially coated, although it is also possible that the entire surface of the base element is coated. Also, the base element may comprise different coatings on different surface areas, where at least one of the coatings comprises or is composed of at least one organically modified silicate (ormosil). In an advantageous development of the invention, ormosil is expected to be superhydrophobic. Being the ormosil superhydrophobic, the condensation of water on the coating can be reduced or even avoided completely. According to the present invention, the term "superhydrophobic" includes the concept of ormosiles having contact angles with water of at least 120 ° and, preferably, 140 ° or more. Alternatively or additionally, ormosil is expected to be superhydrophilic. The superhydrophilic ormosyl can act as a sink or receiver for water, thus helping to remove water from other less hydrophilic surfaces of the household appliance component. According to the present invention, the term "superhydrophilic" includes the concept of ormosiles having angles of contact with water below 25 ° and, preferably, 2 ° or less. In another advantageous development of the invention, it is envisioned that the coating is arranged in one layer or in multiple layers. This allows a precise adjustment of the mechanical and chemical properties of the coating. In another advantageous development of the invention, it is envisioned that the coating comprises cavities, in particular, nanocavities and / or microcavities. This 30 nano / microstructured topography offers the advantage of improved thermal stability and better mechanical properties. In another advantageous development of the invention, it is envisioned that the household appliance component is configured as a lining or wall element of an appliancedomestic. This embodiment allows water contact with such interior and / or exterior walls of surfaces of the domestic appliance to be avoided and / or improved. Alternatively or additionally, it is envisaged that the household appliance component is configured as a cooking field plate, in particular, as a cooking field plate of at least one induction cooker. In the case of the cooking field plates such as the 5 induction cookers, the ceramic hob cooking plates, and the like, a coating on the glass of the induction cooker reduces the adhesion of oil and food waste , so that the cleaning process of such cooking field plates is simplified, providing them with a property related to easy cleaning. Alternatively or additionally, it is envisioned that the household appliance component is configured as a tray or basket of a dishwasher. In dishwashing machines, user complaints focus on water stains that form on the dishes after the washing process. The formation of such spots may be mainly related to water hardness. To remove such water stains, coating a tray and / or basket of the dishwasher can help the 15 water droplets adhere to the tray / basket, since these small drops of water are fixed to a greater extent on a tray or basket covered and to a lesser extent on common tableware materials (glass, steel, ceramics, etc.). Another aspect of the invention refers to a method for coating a household appliance component, in which at least one surface of a base element of household appliance component 20 is partially or completely coated with at least one organically modified silicate (ormosil ). Ormosiles can have a very high water repellency and, therefore, effectively prevent water condensation on the coated areas of the base element, for example, on walls of a refrigerator. This improvement of the condensation properties leads to the reduction of the temperature necessary for the drying of household appliances such as dryers, washing machines, and dishwashing machines, as well as the reduction of the time required for the drying process. Consequently, the energy consumption necessary to effect such a drying process is reduced, for example, in dishwashing machines and in dryers. Alternatively or additionally, the ormosiles may have a very high affinity with water to thereby effectively prevent condensation of water on uncoated areas, for example, on dishes placed inside a dishwasher. Thus, the coating effectively repels hydrophobic components such as oil and food debris, thus simplifying the cleaning process of the different components of the household appliance. Also, ormosiles can be applied directly over 35any material that is usually used for the surface of the base elements of the household appliance components, for example, on plastic materials (for example, polystyrene or polypropylene), metals, glass, silicon, paper, cardboard, and stones. Generally, the wettability or non-wettability of such coated surfaces is not affected by the underlying substrate material or by the pH of the water. In addition, 5 ormosil coatings are durable and stable, both mechanically and chemically. In general, the coating of the base element may be composed of one or more ormosiles. The surface of a base element may be coated with a composition comprising ormosil together with one or more additional components. In addition, the surface of the base element can only be partially coated, although alternatively it is also possible that the entire surface of the base element is coated. Also, the base element can be coated with different coatings on different surface areas, where at least one of the coatings comprises or is composed of at least one organically modified silicate (ormosil). In another advantageous development of the invention, it is envisioned that the ormosil is applied by spray coating on the base element. In other words, it is envisaged that at least one section of a surface of the household appliance component is coated with the ormosil by a spray coating process. Coatings generated by spray coating have excellent mechanical and chemical properties and can be easily applied to all base materials and commonly used forms. In addition, spray coating makes it possible for production costs to be low. In another advantageous development of the invention, it is envisioned that the ormosil is first mixed with at least one plastic material and / or with at least one solvent, and then the mixture is applied by spray coating on the surface. surface. The coatings must be mechanically stable and must adhere securely to the base element during the life of the household appliance component. Therefore, the ormosil (s) must be mixed with plastic materials such as granulated polystyrene, which functions as a binder. Alternatively or additionally, the ormosyl (s) must be mixed with one or more solvents such as ethanol and / or tetrahydrofuran to facilitate the coating of the base element, for example, by spray coating. In another advantageous development of the invention, it is envisioned that the ormosil employed is synthesized through a sol-gel process. The sol-gel process is a method to producesolid materials from small molecules, and involves the conversion of monomers into a colloidal solution (sol) that acts as the precursor for an integrated network (or gel) of discrete particles or crosslinked polymers. In this chemical process, the "sun" (or solution) gradually evolves towards the formation of a jelly-like diphasic system that contains both a liquid phase and a solid phase, whose morphologies oscillate between the 5 discrete particles and networks of continuous polymers. The gels according to the present invention can be produced, for example, using methyltrimethoxysilane (MTMS) and phenyltrimethoxysilane (PhTES) for superhydrophobic coatings and / or using tetraethylorthosilicate for superhydrophilic coatings. Naturally, different monomers and / or mixtures of monomers can also be used. The respective monomers 10 can be dissolved in a solvent such as ethanol and hydrolyzed at room temperature with an acid catalyst (eg oxalic acid). The resulting compounds can then be polymerized using an alkaline catalyst (for example, ammonium hydroxide), thus forming a gel. In another advantageous development of the invention, it is provided that the formed ormosil gel hardens for a predetermined period at a predetermined temperature before coating the surface of the household appliance component. The hardening causes a change in the physical and chemical properties of the ormosil gel. The hardening process can be accelerated or slowed down by physical and / or chemical influences such as temperature and / or pressure, oxygen, inert gas, humidity, light, reduced or increased ultraviolet radiation, and the like. Gels formed with ormosil content can be, for example, hardened at room temperature for 1 to 3 days to improve their mechanical and chemical properties. In another advantageous development of the invention, ultrasonic vibrations are applied to the ormosil before coating the surface of the household appliance component. Due to the cavitation shear forces 25 by the application of ultrasonic vibrations, the molecular weight of the ormosil (s) is reduced by reducing the size of the particles, resulting in a polydispersed colloidal solution. The multiphase systems are dispersed and emulsified very efficiently, so that very fine mixtures are prepared. The resulting "sono-ormosil (s)" (s) show a higher density and better thermal stability compared to the ormosiles that are produced without the application of ultrasonic vibrations. In another advantageous development of the invention, it is envisioned that the coating be brought into contact with an organic solvent. This improves the adhesion of the coating it containsOrmosil with the surface of the base element. The coating can be, for example, immersed for several seconds in an organic solvent such as acetone. Alternatively or additionally, the organic solvent may be sprayed on the coating. A third aspect of the invention refers to a household appliance, which comprises at least one household appliance component according to the first aspect of the invention and / or at least one household appliance component that is partially or completely covered by a method according to the second aspect of the invention. The domestic appliance is provided with custom-made ormosil-containing coatings and, therefore, with controlled wettability and / or non-wettability. Other features and their advantages can be drawn from the description of the first and second aspects of the invention. A fourth aspect of the invention refers to the use of at least one organically modified silicate (ormosil) to partially or completely coat a surface of a base element of a household appliance component. The characteristics and their resulting advantages can be drawn from the description of the first, the second, and the third aspect of the invention. Other features of the invention are drawn from the claims and the following embodiments. The features and combinations of features mentioned above in the description, as well as the features and combinations of features mentioned below in the embodiments, are usable not only in the combination indicated in each case, but also in other combinations without abandoning the scope of the invention. Therefore, variations of the invention are also possible that are not explicitly shown and described in the embodiments but which, however, can be formulated through different combinations of features separate from the described embodiments. Variations and combinations of features that do not contain all the features of an independent claim originally formulated are also possible. Next, the embodiments of the invention are described in more detail with reference to the schematic drawings. Here, they show: Fig. 1 a conventional household appliance component without coating after being treated for 10 minutes with water; and Fig. 2 a household appliance component according to the invention after being treated for 10 minutes with water.1. Synthesis of ormosil gels Ormosil gels with nanocavities that can be used in the context of the present invention are obtained by a sol-gel method. The gels are formed using methyltrimethoxysilane (MTMS) and phenyltrimethoxysilane (PhTES) for superhydrophobic coatings, or using tetraethylorthosilicate for superhydrophilic coatings. The respective monomer (s) is / are dissolved in ethanol (a solvent for safe use) and hydrolyzed at room temperature with an acid catalyst (oxalic acid). The resulting compounds are then polymerized at room temperature using an alkaline catalyst (ammonium hydroxide), thus forming a gel. 2. Preparation of ormosil colloids 10 Gels formed in this way harden at room temperature for 1 to 3 days. The hardened gels are diluted with ethanol and then disintegrated by sonication using ultrasonic vibrations, which results in a colloidal solution. Ultrasonic vibrations can be produced by an ultrasound bath or by an ultrasound probe. 15 3. Preparation and characterization of the coatings The organically modified silicate coatings show unique properties, being between organic polymers and silica, since they are resistant against atmospheric conditions such as silicas and flexible as polymers, and are not as fragile like silica coatings thanks to its flexibility, and are ideal for the production of durable coatings thanks to its exceptional mechanical and chemical properties. Another characteristic of ormosil coatings is their good adhesion to many different surfaces, so they can be applied on various surfaces, such as plastics, metals, glass, or wood, without an additional binder. The coatings should generally be mechanically stable to adhere securely to the respective base element. Ormosil gels that are prepared according to the method described above are mixed with granulated polystyrene and tetrahydrofuran and then applied to a household appliance component by spray coating. The household appliance component may be an inner lining for a refrigerator and comprise a base element made of polystyrene or other suitable plastic material. The coated household appliance component is then immersed in acetone to improve the adhesion of the coating.It contains ormosil. Following these steps, several tests are carried out to examine the adhesion and mechanical properties of the coating. 3.1 Examination of adhesion and mechanical properties of coatings  Band test: 5 Adhesion properties are examined by a band. In this test, the band is applied on the surface of the household appliance component with a specific pressure. The properties of the coating are examined after the band has been removed.  Scratch test: 10 The resistance of the coating against scratching is tested by a metal stick. The effect of scratching is examined by measuring the angle of contact with water in the area where the stick has been used to scratch the coating.  Abrasion test: This test is used to determine the resistance of the coating against scanning and pressure. A test device, weighing 120 grams, is wrapped in a wet cloth and moved on the surface of the coating with a predetermined speed and time. After the test, the properties and morphology of the coating are examined.  Chemical stability test: 20 To test the stability of the coating against aggressive chemicals, various solutions with different concentrations are prepared and applied on the coating. The solutions are designed to mimic the chemical properties of common foods such as vinegar, lemon, milk, etc. In addition, to test the resistance against commonly used cleaning products, 25 compounds such as dishwashing soap, grease solvent, and caustic soda have been used. The angles of contact with water within the areas of the coating that have been subjected to these solutions are measured to determine chemical stability. 4. Examination of anti-condensation propertiesTo examine the anti-condensation property of a superhydrophobic coating, the coated household appliance component is treated with water vapor for a predetermined time (for example, 10 minutes). Then, the amount of water that remains on the coating is measured. In addition, the performance of the coating is determined by measuring the angles of contact with water if 5 small drops remain. Figure 1 shows a conventional household appliance component 1 without coating after being treated for 10 minutes with water. The household appliance component 1 is made of polystyrene and is completely covered by drops of water 2. Figure 2 shows a household appliance component 3 according to the invention. The household appliance component 3 comprises a base element made of polystyrene, which is completely coated with a superhydrophobic coating containing ormosil (MTMS-PhTES). Even after being treated for 10 minutes with water, there are no 2 drops of water attached to the coating. Therefore, condensation problems in household refrigerators, described as "perspiration" by the 15 users, can be completely avoided. Mainly in the humid areas of the refrigerator, small drops of water 2 cannot be formed on the surface of the coated household appliance component 3. In dishwashing machines, customer complaints focus on water stains that form on the dishes after the washing process. To remove these water stains, household appliance components such as polypropylene trays and baskets comprising superhydrophilic ormosyl coatings can be used. In this way, water droplets will be formed to a greater extent on the superhydrophilic ormosil coating than on the less hydrophilic material of the dishes (glass, steel, ceramics, etc.). 25 In the case of induction cookers or other cooking fields, a superhydrophilic coating on the cover glass of the cooking field simplifies the cleaning process. Those skilled in the art will understand that, while the present invention has been set forth with reference to the preferred embodiments, various modifications, changes and additions to the previous invention may be made without abandoning the spirit and scope thereof. The values of the parameters used in the claims and in the description to define the process and measurement conditionsto characterize the specific properties of the invention, they are also included within the framework of deviations, for example, as a result of measurement errors, system errors, weight errors, DIN tolerances, and the like.LIST OF REFERENCE SYMBOLS 1 Conventional household appliance component 2 Water drop 3 Domestic appliance component according to the invention 
    权利要求:
    Claims (1)
    [1]
    CLAIMS 1. Household appliance component (3), which comprises a base element, where at least one surface of the base element is partially or completely covered with a functional coating, characterized in that the coating comprises at least one organically modified silicate (ormosil ). 2. Household appliance component (3) according to claim 1, wherein the ormosyl is superhydrophobic and / or superhydrophilic. Household appliance component (3) according to claim 1 or 2, wherein the coating is arranged in one layer or in multiple layers. 4. Household appliance component (3) according to any of claims 1 to 3, wherein the coating comprises cavities, in particular nanocavities and / or microcavities. Household appliance component (3) according to any one of claims 1 to 4, which is configured as a lining or wall element of a domestic appliance, as a cooktop plate, or as a tray or basket of a dishwasher. . 6. Method for coating a household appliance component (3), characterized in that at least one surface of a base element of the household appliance component (3) is partially or completely coated with at least one organically modified silicate (ormosyl). Method according to claim 6, wherein the ormosil is applied by spray coating on the base element. Method according to claim 7, wherein the ormosil is first mixed with at least one plastic material and / or with at least one solvent, and where the mixture is then applied by spray coating on the surface.9. Method according to any of claims 6 to 8, wherein the ormosil used is synthesized through a sol-gel process. A method according to claim 9, wherein the formed ormosil gel hardens for a predetermined period at a predetermined temperature before coating the surface of the household appliance component (3). Method according to any of claims 6 to 10, wherein ultrasonic vibrations are applied to the ormosil before coating the surface of the household appliance component (3). A method according to any one of claims 6 to 11, wherein the coating is contacted with an organic solvent. Household appliance, which comprises at least one household appliance component (3) according to any one of claims 1 to 5 and / or at least one household appliance component (3) which is partially or completely coated by a method according to any one of claims 6 to 12. 14. Use of at least one organically modified silicate (ormosyl) to partially or completely coat a surface of a base element of a household appliance component (3).
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    同族专利:
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    ES2597749B1|2017-12-26|
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    引用文献:
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    ES201531061A|ES2597749B1|2015-07-20|2015-07-20|Home appliance component comprising a base element with a functional coating|ES201531061A| ES2597749B1|2015-07-20|2015-07-20|Home appliance component comprising a base element with a functional coating|
    EP16741279.0A| EP3324816B1|2015-07-20|2016-07-14|Household appliance component comprising a base element with a functional coating|
    PCT/EP2016/066733| WO2017012968A1|2015-07-20|2016-07-14|Household appliance component comprising a base element with a functional coating|
    PL16741279T| PL3324816T3|2015-07-20|2016-07-14|Household appliance component comprising a base element with a functional coating|
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