SI26406A - A water-carrying household appliance with a heating element - Google Patents

Abstract

Gospodinjski aparat, ki prenaša vodo, kot je pomivalni stroj, ki obsega pomivalno komoro, v kateri so med delovanjem stroja nameščeni kosi posode, ki naj se pomijejo, kad, ki s spodnjo stranico, stranskima stranicama, zadnjo stranico in zgornjo stranico ograjuje pomivalno komoro, sistem za kroženje tekočine, s katero se obdeluje posoda, in vsaj en grelni element, pri čemer je grelni element ploščati grelni element (7), izveden na način, daje njegova debelina bistveno manjša od njegove dolžine in širine, pri čemer je ploščati grelni element (7) razporejen na vsaj eni stranici kadi na strani, kije obrnjena proč od pomivalne komore, to je na zunanji strani stranice kadi.A household appliance that transports water, such as a dishwasher, comprising a washing chamber in which the pieces of dishes to be washed are placed during operation of the machine, a tub that encloses the washing chamber with its bottom, sides, back and top , a system for circulating the liquid with which the vessel is treated, and at least one heating element, wherein the heating element is a flat heating element (7), designed in such a way that its thickness is significantly smaller than its length and width, wherein the flat heating element is element (7) arranged on at least one side of the tub on the side facing away from the washing chamber, i.e. on the outside of the side of the tub.

Description

Gospodinjski aparat, ki prenaša vodo, z grelnim elementomA water-carrying household appliance with a heating element

Predmet izumaThe subject of the invention

Predmet izuma je gospodinjski aparat, ki prenaša vodo, kot je pomivalni stroj, ki obsega pomivalno komoro, v kateri so med delovanjem stroja nameščeni kosi posode, ki naj se pomijejo, kad, ki s spodnjo stranico, stranskima stranicama, zadnjo stranico in zgornjo stranico ograjuje pomivalno komoro, sistem za kroženje tekočine, s katero se obdeluje posoda, in vsaj en grelni element.The subject of the invention is a household appliance that transports water, such as a washing machine, which comprises a washing chamber in which the pieces of dishes to be washed are placed during the operation of the machine, a tub with a bottom side, side sides, back side and top side encloses the washing chamber, the system for circulating the liquid used to process the dish, and at least one heating element.

Tehnični problemTechnical problem

Tehnični problem je zasnovati gospodinjski aparat, ki prenaša vodo, kot je pomivalni stroj, z grelnim elementom, ki gaje mogoče razporediti tako, da ne zavzema prostora vodnih poti in ki bo zagotavljal visoko grelno sposobnost, da bo z njim moč učinkovito greti tekočino, ki kroži znotraj pomivalnega stroja, kot tudi zrak, ki kroži znotraj pomivalnega stroja in suši ter greje pomito posodo.The technical problem is to design a household appliance that transports water, such as a dishwasher, with a heating element that can be arranged in such a way that it does not take up the space of the waterways and that will provide a high heating capacity, so that it can be used to efficiently heat a liquid that circulates inside the dishwasher, as well as the air that circulates inside the dishwasher and dries and heats the washed dishes.

Stanje tehnikeState of the art

Pomivalni stroj ima za namen gretja vode, s katero se pomiva in splakuje posoda, ki jo je treba pomiti, vgrajen vsaj en grelni element. V enostavnih izvedbah pomivalnega stroja je grelni element v obliki cevastega elementa, ki je razporejen na spodnji stranici kadi pomivalnega stroja. Najenostavnejša izvedba cevastega grelnega elementa je v obliki klasičnega uporovnega grelca, kije priključen na vir električnega toka in neposredno greje tekočino v pomivalnem stroju. Cevasti grelni element je lahko zasnovan tudi kot vod z dvema koncema, ki sta fluidno povezana s toplotnim virom za segrevanje grelnega medija, ki kroži po cevastem elementu. Voda za pomivanje in/ali splakovanje, ki kroži znotraj pomivalnega stroja, se posredno segreva preko cevastega elementa. Taka rešitev je sicer preprosta, vendar mora biti za zadovoljivo segrevanje vode cevasti element dovolj velik, da v zahtevanem kratkem času segreje zadostno količino vode na zahtevano temperaturo. Ker je tak cevasti element razporejen znotraj kadi, obstaja nevarnost, da cevasti element med delovanjem stroja pride v stik z elementi, ki jih je treba pomiti, ki se zaradi visoke temperature uničijo, ali z ostanki hrane, kar povzroča neprijeten vonj. Vse to pa zmanjša učinek segrevanja. Ker je cevasti element potopljen v tekočini in mora biti njegova temperatura visoka, da se doseže ustrezno segrevanje, se iz vode na njegovo površino pospešeno izloča vodni kamen, kar še dodatno poslabša njegov izkoristek.The dishwasher has at least one heating element built in for the purpose of heating the water used to wash and rinse the dishes to be washed. In simple versions of the washing machine, the heating element is in the form of a tubular element, which is arranged on the lower side of the tub of the washing machine. The simplest version of the tubular heating element is in the form of a classic resistance heater, which is connected to an electric current source and directly heats the liquid in the dishwasher. The tubular heating element can also be designed as a conduit with two ends that are fluidly connected to a heat source for heating the heating medium that circulates around the tubular element. The water for washing and/or rinsing, which circulates inside the dishwasher, is heated indirectly via the tubular element. Such a solution is simple, but in order to heat the water satisfactorily, the tubular element must be large enough to heat a sufficient amount of water to the required temperature in the required short time. Since such a tubular element is arranged inside the tub, there is a risk that the tubular element may come into contact with the elements to be washed, which are destroyed by the high temperature, or with food residues during the operation of the machine, causing an unpleasant smell. All this reduces the heating effect. Since the tubular element is immersed in the liquid and its temperature must be high to achieve adequate heating, limescale is rapidly released from the water onto its surface, which further deteriorates its efficiency.

Da bi se izognili zgoraj navedenim slabostim, obstajajo pomivalni stroji, ki imajo grelni element nameščen izven kadi, kot je opisano v EP 0720830 A2 (Milocco et al). Med dnom kadi in spodnjo stranico ohišja pomivalnega stroja je prostor, v katerem so namaščeni elementi, ki so potrebni za delovanje pomivalnega stroja. Del tega prostora, običajno v bližini odprtine v dnu kadi in v njej razporejene zbiralne posode, katere del je tvorjen kot vsebnik, v katerega doteka krožeča voda. V vsebniku je razporejen cevasti element, po katerem kroži grelni medij. Da se zagotovi zadostna toplotna učinkovitost grelnega elementa, mora biti le- ta zadosti velik. Velikost grelnega elementa predstavlja problem, ker je prostor, ki je na voljo zelo omejen.In order to avoid the disadvantages mentioned above, there are dishwashers which have a heating element located outside the tub, as described in EP 0720830 A2 (Milocco et al). Between the bottom of the tub and the underside of the dishwasher housing, there is a space in which the elements necessary for the operation of the dishwasher are lubricated. A part of this space, usually near the opening in the bottom of the bathtub and the collection container arranged in it, part of which is formed as a container into which the circulating water reaches. A tubular element is arranged in the container, along which the heating medium circulates. To ensure sufficient thermal efficiency of the heating element, the opening must be large enough. The size of the heating element is a problem because the space available is very limited.

Grelni element je lahko razmeščen tudi v področju črpalke, ki je razporejena pod dnom kadi pomivalnega stroja v območju zbiralne posode. V WO 2013/117603 (Kobrich) je opisana črpalka, ki ima soosno razporejeno dodatno kovinsko cev, tako da tekočina, ki jo potiska črpalka, kroži po obodu te cevi. Na zunanji strani kovinske cevi je razporejen grelni element v obliki folije ali filma in segreva steno te dodatno nameščene kovinske cevi po kateri kroži tekočina, ko potuje proti izhodu iz črpalke. Vsi sestavni elementi so zaradi majhnega prostora, ki je na voljo pod dnom kadi, prilagojeni, tudi črpalka. Posledično je tudi dodatna kovinska cev relativno majhnega premera in dolžine, zato je površina, ki je na voljo za pritrditev grelnega elementa v obliki folije, relativno majhna. Da se doseže ustrezno segrevanje tekočine, mora biti temperatura zunanje površine grelnih elementov visoka. Zaradi visoke temperature prihaja do okvar grelnih elementov in s tem do krajšanja življenjske dobe grelnih elementov. Slabost tovrstne rešitve je tudi v tem, da mora biti črpalka prirejena za dodatno vgradnjo kovinske cevi.The heating element can also be placed in the area of the pump, which is arranged under the bottom of the tub of the dishwasher in the area of the collection container. WO 2013/117603 (Kobrich) describes a pump which has an additional metal tube arranged coaxially so that the liquid pushed by the pump circulates around the circumference of this tube. A heating element in the form of a foil or film is arranged on the outside of the metal pipe and heats the wall of this additionally installed metal pipe along which the liquid circulates as it travels towards the exit from the pump. Due to the small space available under the bottom of the bathtub, all components are adapted, including the pump. As a result, the additional metal tube is also relatively small in diameter and length, so the area available for attaching the heating element in the form of foil is relatively small. In order to achieve adequate heating of the liquid, the temperature of the outer surface of the heating elements must be high. Due to the high temperature, the heating elements fail and thus shorten the life of the heating elements. The disadvantage of this type of solution is that the pump must be adapted for the additional installation of a metal pipe.

Rešitev tehničnega problemaSolving a technical problem

Tehnični problem je rešen z gospodinjskim aparatom, ki prenaša vodo, kot je pomivalni stroj, ki obsega vsaj en grelni element, ki je v bistvu uporovni grelni element, izveden na način, daje njegova debelina bistveno manjša od njegove dolžine in širine. Grelni element je v bistvu izveden v obliki filma ali folije, ki je razporejen na vsaj eni stranici kadi na strani, ki je obrnjena proč od pomivalne komore, to je na zunanji strani stranic kadi. Stranica kadi ali del stranice kadi, na kateri je pritrjen ploščati grelni element, je izdelan iz kovinskega materiala ali materiala, ki dobro prevaja toploto.The technical problem is solved by a household appliance that transports water, such as a washing machine, which comprises at least one heating element, which is essentially a resistance heating element, designed in such a way that its thickness is significantly smaller than its length and width. The heating element is basically made in the form of a film or foil, which is arranged on at least one side of the tub on the side facing away from the washing chamber, i.e. on the outside of the sides of the tub. The side of the tub or part of the side of the tub to which the flat heating element is attached is made of a metal material or a material that conducts heat well.

Segrevanje tekočine z oblivanjem in prehajanjem preko stranice kadi poteka po veliki površini, posledično je tekočina daljši čas v stiku s toplo površino, zato je moč grelnega elementa lahko bistveno manjša kot pri grelnih telesih z manjšo površino. Zaradi manjše moči grelnega elementa je njegova temperatura nižja in posledično tudi nižja temperatura stranice kadi. Zato je izločanje vodnega kamna iz tekočine na stenah kadi manjše ali celo odpravljeno, ker se eventualno izločen vodni kamen odstrani z brizganjem tekočine med procesom pranja po stenah.The heating of the liquid by pouring and passing over the side of the tub takes place over a large surface, as a result, the liquid is in contact with the warm surface for a longer time, so the power of the heating element can be significantly lower than with heating elements with a smaller surface. Due to the lower power of the heating element, its temperature is lower and, consequently, the temperature of the side of the tub is also lower. Therefore, the release of limescale from the liquid on the walls of the tub is reduced or even eliminated, because any limescale that may have been removed is removed by spraying the liquid during the washing process on the walls.

Ploščati grelni element je zaradi manjše dimenzije v debelini, moč namestiti na kateri koli del vsakokratne stranice kadi ne da bi bilo zato treba kakorkoli spreminjati ali prilagajati zasnovo pomivalnega stroja.Due to its smaller dimensions and thickness, the flat heating element can be installed on any part of the side of the tub without having to change or adjust the design of the dishwasher in any way.

Ploščati grelni element je moč uporabljati tudi za gretje zraka za sušenje posode znotraj pomivalne komore. Zrak, ki se dovaja v pomivalno komoro, ob neprestanem kroženju znotraj pomivalne komore prihaja v stik s stranicami kadi ali deli stranic kadi, ki jih greje eden ali več ploščatih grelnih elementov. Zato v pomivalni stroj po izumu ni treba nameščati dodatnih grelnih elementov za gretje zraka oziroma se zaradi segretih stranic, ki so grete s ploščatimi grelnimi elementi, skrajša čas sušenja. Gretje pomivalne komore s ploščatimi grelnimi elementi je še posebej ugodno za segrevanje posode, zlasti krožnikov, pred serviranjem.The flat heating element can also be used to heat the air for drying dishes inside the washing chamber. The air supplied to the washing chamber, while continuously circulating inside the washing chamber, comes into contact with the sides of the tub or parts of the sides of the tub, which are heated by one or more flat heating elements. Therefore, it is not necessary to install additional heating elements for heating the air in the washing machine according to the invention, or the drying time is shortened due to the heated sides, which are heated by flat heating elements. Heating the washing chamber with flat heating elements is particularly advantageous for heating dishes, especially plates, before serving.

Pomivalni stroj z grelnim elementom po izumu bo v nadaljevanju podrobneje opisan z izvedbenim primerom in skicami, ki prikazujejoThe dishwasher with a heating element according to the invention will be described in more detail in the following with an exemplary embodiment and sketches showing

SL 1 kad pomivalnega strojaEN 1 dishwasher tub

SL 2 kad pomivalnega stroja z grelnim elementom, razporejenim na dnuEN 2 dishwasher tub with heating element arranged at the bottom

Sl. 3 kad pomivalnega stroja z grelnim elementom, razporejenim na stenifig. 3 tub dishwasher with heating element arranged on the wall

Relativni izrazi, kot so prednji, zadnji, gornji, spodnji ipd. so v opisu definirani z gledišča uporabnika gospodinjskega aparata, ko je le-ta v funkcionalnem stanju.Relative terms such as front, back, top, bottom, etc. are defined in the description from the point of view of the user of the household appliance when it is in a functional state.

Gospodinjski aparat , ki prenaša vodo, kot je pomivalni stroj 100, obsega pomivalno komoro 1, v kateri so med delovanjem stroja v posebnih košarah nameščeni kosi posode, ki naj se pomijejo. Nadalje obsega kad 2, ki s spodnjo stranico 3, stranskima stranicama 4, zadnjo stranico 5 in zgornjo stranico 6 ograjuje pomivalno komoro 1. Spodnja stranica 3 je izvedena po principu lijaka tako, da se z določenim naklonom steka od zunanjega roba proti odprtini 9, ki je razporejena v bistvu na sredini spodnje stranice 3. Vsaj del kadi 2, prednostno celotna kad 2, je izdelana iz nerjavne pločevine, ki je dober toplotni prevodnik. V spodnjem delu pomivalnega stroja, pod spodnjo stranico 3 kadi je razporejen sistem za kroženje tekočine. Sistem za kroženje tekočine obsega črpalna sredstva, ki potiskajo tekočino iz zbiralne posode proti brizgalnim ročicam in so razporejena v prostoru pod spodnjo stranico 3 kadi, eno ali več brizgalnih ročic z odprtinami, skozi katere brizga tekočina in obliva posodo, ki jo je treba pomiti, in so razporejena znotraj pomivalne komore 1, zbiralno posodo (ang. sump cup) za zbiranje in zadrževanje tekočine, s katero se obdeluje posodo, zbiralna posoda je razporejena v odprtini spodnje stranice 3 in sega v prostor pod spodnjo stranico 3 kadi, vode, ki medsebojno fluidno povezujejo elemente sistema za kroženje tekočine. Pomivalni stroj 100 in s tem pomivalna komora 1 je s sprednje strani zaprt z vrati, ki na slikah niso prikazana.A household appliance that transports water, such as a dishwasher 100, comprises a washing chamber 1 in which, during operation of the machine, pieces of dishes to be washed are placed in special baskets. Furthermore, it includes a bathtub 2, which encloses the washing chamber 1 with the bottom side 3, side sides 4, rear side 5 and upper side 6. The bottom side 3 is made according to the principle of a funnel, so that it flows with a certain slope from the outer edge towards the opening 9, which is arranged essentially in the middle of the lower side 3. At least part of the tub 2, preferably the entire tub 2, is made of stainless steel sheet, which is a good heat conductor. In the lower part of the dishwasher, under the lower side 3 of the tub, there is a liquid circulation system. The liquid circulation system comprises pumping means that push the liquid from the collection container towards the spray arms and are arranged in the space under the underside 3 of the tub, one or more spray arms with openings through which the liquid sprays and covers the dishes to be washed, and are arranged inside the washing chamber 1, a sump cup for collecting and holding the liquid used to process the dishes, the sump cup is arranged in the opening of the lower side 3 and extends into the space under the lower side 3 of the tub, the water that they fluidly connect the elements of the fluid circulation system to each other. The dishwasher 100 and thus the washing chamber 1 is closed from the front by a door that is not shown in the pictures.

Tekočina, s katero se obdeluje posoda, ki jo je treba pomiti, se v določenih korakih postopka segreva z vsaj enim grelnim elementom 7, ki je izveden na način, da je njegova debelina bistveno manjša od njegove dolžine in širine. Grelni element 7 je v bistvu izveden v obliki filma ali folije. Grelni element 7 obsega grelno telo, ki je v bistvu uporovno grelno telo. Ploščati grelni element 7 je razporejen na vsaj eni stranici 3, 4, 5, 6 kadi 2, na strani, ki je obrnjena proč od pomivalne komore 1, to je na zunanji strani stranic 3, 4, 5, 6 kadi 2. V primeru razporeditve samo enega ploščatega grelnega elementa 7 v pomivalnem stroju, je ta nameščen na zunanji strani spodnje stranice 3. Ploščatih grelnih elementov 7 je v pomivalnem stroju lahko tudi več kot eden. Odvisno od njegove velikosti, je moč namestiti en večji ploščati grelni element 7 v rangu velikosti stranice kadi na posamezno stranico ali več manjših ploščatih grelnih elementov 7 na posamezno stranico kadi. Ne glede na velikost ploščatega grelnega elementa 7 je njegova dimenzija debeline bistveno manjša od njegove dolžine in širine. Ploščati grelni element 7 je na posamezno stranico pritrjen v delu stranice, ki je izdelana iz toplotno prevodnega materiala.The liquid with which the dish to be washed is treated is heated in certain steps of the process by at least one heating element 7, which is designed in such a way that its thickness is significantly smaller than its length and width. The heating element 7 is basically made in the form of a film or foil. The heating element 7 comprises a heating body, which is basically a resistance heating body. The flat heating element 7 is arranged on at least one side 3, 4, 5, 6 of the tub 2, on the side facing away from the washing chamber 1, i.e. on the outside of the sides 3, 4, 5, 6 of the tub 2. In the case arrangement of only one flat heating element 7 in the dishwasher, this is installed on the outside of the bottom side 3. There can be more than one flat heating element 7 in the dishwasher. Depending on its size, it is possible to install one larger flat heating element 7 in the range of the size of the side of the tub on each side or several smaller flat heating elements 7 on each side of the tub. Regardless of the size of the flat heating element 7, its thickness dimension is significantly smaller than its length and width. The flat heating element 7 is attached to the individual side in the part of the side that is made of thermally conductive material.

Ploščati grelni element 7 je na vsakokratno stranico kadi pritrjen neposredno brez kakršnega koli vmesnega elementa na način lepljenja, vijačenja ali drugačnega načina pritrditve znane vrste, ki omogoča neposredno pritrditev oziroma zagotovi dober toplotni stik med grelnim telesom grelnega elementa in stranico aparata, na katero je pritrjen. Še posebej ugodno je, če je grelni element izveden tako, da je grelno telo pritrjeno na nosilno folijo, na primer na način lepljenja, in je nato nosilna folija pritrjena na način lepljenja na stranico aparata tako, da pokriva grelno telo na tisti njegovi strani, ki je obrnjena proč od pomivalne komore 1. Z namenom doseganja čim manjše porabe energije, ima folija na strani, obrnjeni proč od grelnega telesa, toplotno izolacijske lastnostiThe flat heating element 7 is attached to each side of the tub directly without any intermediate element by means of gluing, screwing or another known method of attachment, which enables direct attachment or ensures good thermal contact between the heating body of the heating element and the side of the appliance to which it is attached . It is particularly advantageous if the heating element is designed in such a way that the heating body is attached to the carrier film, for example by gluing, and then the carrier film is attached by gluing to the side of the device in such a way that it covers the heating body on that side, which is facing away from the washing chamber 1. In order to achieve the lowest possible energy consumption, the foil on the side facing away from the heating body has thermal insulation properties

Vsakokratni ploščati grelni element 7, ki je razporejen na zunanji strani posamezne stranice 3, 4, 5, 6 ima z namenom zagotoviti čim bolj smotrno porabo energije na svoji zunanji strani 7.1, to je strani, ki je obrnjena proč od pomivalne komore 1, nameščen toplotno izolacijsko oblogo 8 v obliki filma ali folije. Izolacijska obloga 8 je na ploščati grelni element 7 pritrjena neposredno brez kakršnega koli vmesnega elementa na način lepljenja, vijačenja ali drugačnega načina pritrditve znane vrste, ki omogoča neposredno pritrditev.Each flat heating element 7, which is arranged on the outside of each side 3, 4, 5, 6, has the purpose of ensuring the most efficient energy consumption on its outside side 7.1, i.e. the side facing away from the washing chamber 1, installed thermal insulation coating 8 in the form of film or foil. The insulating coating 8 is attached to the flat heating element 7 directly without any intermediate element by means of gluing, screwing or another known type of attachment method that enables direct attachment.

Krmilna naprava, ki krmili postopek pomivanja, odvisno od koraka programa vključi ploščati grelni element 7. Ploščati grelni element 7 segreva stranico 3, 4, 5, 6 kadi, na kateri je razmeščen in posledično se preko stranice segreva tekočina, ki obliva stranico. Ploščati grelni element 7, kije nameščen na zunanji strani spodnje stranice 3, lahko segreva tekočino že v času, ko ta doteka in se zbira v kadi 2, kar skrajšuje čas pomivanja. V primeru, da je nameščenih več ploščatih grelnih elementov 7, krmilna naprava v odvisnosti od delovnega procesa lahko vključi vse ali zgolj posamezne ploščate grelne elemente 7. Vsi ali zgolj posamezni ploščati grelni elementi 7 so lahko vključeni v procesu, ko v stroju kroži voda ali v procesu, ko v stroju kroži zrak.The control device that controls the washing process, depending on the step of the program, turns on the flat heating element 7. The flat heating element 7 heats the side 3, 4, 5, 6 of the tub, on which it is placed, and as a result, the liquid that pours over the side is heated over the side. The flat heating element 7, which is installed on the outside of the bottom side 3, can heat the liquid already at the time when it reaches and collects in the tub 2, which shortens the washing time. In the event that several flat heating elements 7 are installed, the control device, depending on the work process, can include all or only individual flat heating elements 7. All or only individual flat heating elements 7 can be included in the process when water circulates in the machine or in the process when air circulates in the machine.

Gretje pomivalne komore s ploščatim grelnim elementom 7 ali z več njimi je še zlasti primemo v postopku gretja posode, zlasti krožnikov, pred serviranjem hrane.Heating the washing chamber with a flat heating element 7 or with several of them is especially useful in the process of heating dishes, especially plates, before serving food.

Posoda, ki je razporejena v pomivalni komori 1 in jo je treba pomiti, se obliva s tekočino, ki je prednostno voda za pomivanje ali splakovanje, preko vsaj ene, lahko tudi več, brizgalnih ročic, ki so del sistema za kroženje tekočine in se nahajajo v pomivalni komori.The container, which is arranged in the washing chamber 1 and is to be washed, is poured with a liquid, which is preferably water for washing or rinsing, through at least one, possibly several, spray arms that are part of the liquid circulation system and are located in the washing chamber.

Voda, ki se dovede v pomivalni stroj, se zbere v zbiralni posodi, od koder jo črpalna sredstva potiskajo v brizgalne ročice. Glede na korak programa, ki se izvaja, so v vodi lahko raztopljeni tudi različni dodatki. Tekočina iz brizgalnih ročic pod tlakom obliva posodo, ki jo je treba pomiti, razporejeno v pomivalni komori 1, teče po posodi, ki jo je treba pomiti, in stranicah 4, 5, 6 kadi, ki so obrnjene proti notranjosti kadi, in se zbira na dnu kadi 2, na njeni spodnji stranici 3. Spodnja stranica 3 ima zaradi delovanja ploščatega grelnega elementa 7 povišano temperaturo, ki je vsaj enaka temperaturi, prednostno višja vendar ne bistveno, ki jo mora doseči tekočina v določenem delovnem koraku. Segrevanje tekočine z oblivanjem in prehajanjem preko spodnje stranice 3 poteka po veliki površini, zato je tekočina daljši čas v stiku s toplo površino in je posledično moč ploščatega grelnega elementa 7 lahko bistveno manjša kot pri grelnih telesih z manjšo površino. Posledično je tudi temperatura ploščatega grelnega elementa 7 nižja. Zaradi nižje temperature ploščatega grelnega elementa 7 in s tem tudi nižje temperature spodnje stranice 3 kadi, je izločanje vodnega kamna iz tekočine na stenah kadi manjše ali celo odpravljeno, ker je eventualno izločen vodni kamen z brizganjem tekočine po stenah istočasno odstranjen.The water that is supplied to the dishwasher is collected in the collection tank, from where the pumping means push it into the spray arms. Depending on the step of the program being carried out, various additives may also be dissolved in the water. The liquid from the spray arms under pressure covers the dishes to be washed, arranged in the washing chamber 1, flows over the dishes to be washed and the sides 4, 5, 6 of the tub facing the inside of the tub, and collects at the bottom of the tub 2, on its lower side 3. Due to the operation of the flat heating element 7, the lower side 3 has an elevated temperature that is at least equal to the temperature, preferably higher but not significantly higher, that the liquid must reach in a certain work step. The heating of the liquid by pouring and passing over the lower side 3 takes place over a large surface, so the liquid is in contact with the warm surface for a longer time and, as a result, the power of the flat heating element 7 can be significantly lower than in the case of heating elements with a smaller surface. As a result, the temperature of the flat heating element 7 is also lower. Due to the lower temperature of the flat heating element 7 and thus also the lower temperature of the bottom side 3 of the tub, the removal of limescale from the liquid on the walls of the tub is reduced or even eliminated, because any limescale removed by splashing the liquid on the walls is simultaneously removed.

Največja prednost gretja tekočine s ploščatim grelnim elementom 7 je v njegovi velikosti oziroma majhnosti. Zaradi izvedbe v obliki filma ali folije, je moč tak grelni element namestiti na kateri koli del vsakokratne stranice kadi.The biggest advantage of heating the liquid with the flat heating element 7 is its size or small size. Due to the implementation in the form of a film or foil, such a heating element can be installed on any part of each side of the tub.

Claims (8)

Patentni zahtevkiPatent claims 1. Gospodinjski aparat, ki prenaša vodo, kot je pomivalni stroj, ki obsega pomivalno komoro, v kateri so med delovanjem stroja nameščeni kosi posode, ki naj se pomijejo, kad, ki s spodnjo stranico, stranskima stranicama, zadnjo stranico in zgornjo stranico ograjuje pomivalno komoro, sistem za kroženje tekočine, s katero se obdeluje posoda, in vsaj en grelni element, značilen po tem, da je grelni element ploščati grelni element (7), izveden na način, da je njegova debelina bistveno manjša od njegove dolžine in širine, pri čemer je ploščati grelni element (7) razporejen na vsaj eni stranici (3, 4, 5, 6) kadi na strani, kije obrnjena proč od pomivalne komore (1), to je na zunanji strani stranice kadi.1. A household appliance that transports water, such as a washing machine, which comprises a washing chamber in which the pieces of dishes to be washed are placed during the operation of the machine, a tub that encloses the bottom side, the side sides, the back side and the top side a washing chamber, a system for circulating the liquid with which the container is treated, and at least one heating element, characterized in that the heating element is a flat heating element (7), designed in such a way that its thickness is significantly smaller than its length and width , whereby the flat heating element (7) is arranged on at least one side (3, 4, 5, 6) of the tub on the side facing away from the washing chamber (1), i.e. on the outside of the side of the tub. 2. Gospodinjski aparat po zahtevku 1, značilen po tem, da je grelni element (7) izveden v obliki filma ali folije.2. Household appliance according to claim 1, characterized in that the heating element (7) is made in the form of a film or foil. 3. Gospodinjski aparat po kateremkoli predhodnem zahtevku, značilen po tem, da je ploščati grelni element (7) razporejen na stranici (3, 4, 5, 6) na strani, ki je obrnjena proč od pomivalne komore (1), to je na zunanji strani stranice (3, 4, 5, 6), in pretežno v delu, kije izdelana iz toplotno prevodnega materiala.3. Household appliance according to any preceding claim, characterized in that the flat heating element (7) is arranged on the side (3, 4, 5, 6) on the side facing away from the washing chamber (1), i.e. on on the outside of the sides (3, 4, 5, 6), and mainly in the part made of thermally conductive material. 4. Gospodinjski aparat po kateremkoli predhodnem zahtevku, značilen po tem, da je vsaj en ploščati grelni element (7) razporejen na spodnji stranici (3) kadi, na strani, ki je obrnjena proč od pomivalne komore (1), to je na zunanji strani stranice (3).4. Household appliance according to any preceding claim, characterized in that at least one flat heating element (7) is arranged on the bottom side (3) of the tub, on the side facing away from the washing chamber (1), i.e. on the outside side of the side (3). 5. Gospodinjski aparat po kateremkoli predhodnem zahtevku, značilen po tem, da je na strani stranice (3, 4, 5, 6), ki je obrnjena proč od pomivalne komore (1), razporejen en ploščati grelni element (7) ali več manjših ploščatih grelnih elementov (7).5. Household appliance according to any preceding claim, characterized in that one flat heating element (7) or several smaller ones are arranged on the side (3, 4, 5, 6) facing away from the washing chamber (1) flat heating elements (7). 6. Gospodinjski aparat po kateremkoli predhodnem zahtevku, značilen po tem, da je ploščati grelni element (7) na strani, kije obrnjena proč od pomivalne komore 1, toplotno izoliran toplotno izolacijsko oblogo (8).6. A household appliance according to any preceding claim, characterized in that the flat heating element (7) is thermally insulated by a thermal insulation coating (8) on the side facing away from the washing chamber 1. 7. Gospodinjski aparat po kateremkoli predhodnem zahtevku, značilen po tem, da ploščati grelni element (7) segreva tekočino v pomivalni komori.7. Household appliance according to any preceding claim, characterized in that the flat heating element (7) heats the liquid in the washing chamber. 8. Gospodinjski aparat po kateremkoli predhodnem zahtevku, značilen po tem, da ploščati grelni element (7) segreva zrak, ki kroži v pomivalni komori.8. Household appliance according to any preceding claim, characterized in that the flat heating element (7) heats the air circulating in the washing chamber.