US20220404035A1 - Oven for baking food products - Google Patents
Oven for baking food products Download PDFInfo
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- US20220404035A1 US20220404035A1 US17/896,307 US202217896307A US2022404035A1 US 20220404035 A1 US20220404035 A1 US 20220404035A1 US 202217896307 A US202217896307 A US 202217896307A US 2022404035 A1 US2022404035 A1 US 2022404035A1
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- Prior art keywords
- steam
- water
- separation chamber
- outlet
- inlet
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/32—Arrangements of ducts for hot gases, e.g. in or around baking ovens
- F24C15/322—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation
- F24C15/327—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation with air moisturising
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/04—Cooking-vessels for cooking food in steam; Devices for extracting fruit juice by means of steam ; Vacuum cooking vessels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/28—Methods of steam generation characterised by form of heating method in boilers heated electrically
- F22B1/284—Methods of steam generation characterised by form of heating method in boilers heated electrically with water in reservoirs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/003—Details moisturising of air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/32—Arrangements of ducts for hot gases, e.g. in or around baking ovens
- F24C15/322—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation
- F24C15/325—Arrangements of ducts for hot gases, e.g. in or around baking ovens with forced circulation electrically-heated
Definitions
- the present invention refers to an oven for baking food products.
- the present invention is relative to an oven of the type comprising a baking chamber provided with a door for the introduction of the food products to be baked; a support frame, which extends around the baking chamber, and is thermally insulated from the baking chamber itself; a heating device, which is arranged inside the baking chamber, so as to provide the heat needed to bake the food products; and a feeding device for feeding steam into the baking chamber itself.
- a feeding device of known type comprises a water tank, which is fitted to the support frame, a tank filling duct, to which the user has access from a front wall of the oven, a discharge duct for discharging the water contained in the tank outside of the oven, a steam generator, which communicates with the tank, and a feeding circuit for feeding the steam produced by the steam generator into the baking chamber.
- the feeding device comprises, furthermore, a separation chamber, which is separate from the tank, is arranged between the steam generator and the feeding circuit, and is suitable to separate the water from the steam and to recirculate the water again to the inlet of the steam generator.
- the tank normally comprises a cup-shaped container, and a closing lid, which is mounted on the cup-shaped container in a removable manner and is coupled in a fluid-tight manner to the cup-shaped container itself by means of the interposition of a plurality of gaskets.
- the feeding device presents, furthermore, a filter, which is normally mounted inside the tank, so as to filter the water fed to the aforementioned discharge duct, and a level sensor for controlling the water level inside the tank itself.
- the known ovens for baking food products of the type described above present some drawbacks, which are mainly caused by the fact that the tank is relatively complex and expensive to be produced due to the presence of the cup-shaped container, of the closing lid, and of the gaskets, i.e. of a relatively high number of components.
- the assembling of the cup-shaped container, of the closing lid, and of the gaskets has to be performed along the assembly line of the oven and leads, therefore, to a relatively long assembling cycle and to the possibility of assembling mistakes.
- FIG. 1 shows a first schematic rear view in perspective of a preferred embodiment of the oven according to the present invention
- FIG. 2 shows a second schematic rear view in perspective, with parts removed for clarity, of the oven of FIG. 1 ;
- FIG. 3 shows a schematic view in perspective, with sectioned parts and parts removed for clarity, of a first detail of the oven of FIGS. 1 and 2 ;
- FIG. 4 shows an exploded view in perspective of a second detail of the oven of FIGS. 1 and 2 .
- Number 1 in FIGS. 1 and 2 indicates as a whole an oven for baking food products comprising a support frame 2 and a baking chamber 3 , which is housed inside the frame 2 and is thermally insulated from the frame 2 itself by means of the interposition of a known insulating material, which is not shown.
- the chamber 3 presents an opening (not shown), which allows the food products to be introduced inside the chamber 3 , it is formed in correspondence to a front wall 4 of the oven 1 , it extends in a substantially vertical containing plane, and is closed by a door (not shown), which is hinged to the frame 2 so as to rotate, with respect to the frame 2 itself, around a fulcrum axis (not shown), which may be parallel or perpendicular to a substantially horizontal direction 5 .
- the oven 1 is provided, furthermore, with a heating device 51 , which is arranged inside the chamber 3 , so as to provide the heat needed to bake the food products present inside the chamber 3 itself.
- the oven 1 comprises, furthermore, a feeding unit 6 , which is suited to feed steam into the chamber 3 , and comprises, in turn, a tank 7 for containing water, a steam generator 8 communicating with the tank 7 , and a feeding circuit 9 for feeding the steam produced by the generator 8 itself into the chamber 3 .
- a feeding unit 6 which is suited to feed steam into the chamber 3 , and comprises, in turn, a tank 7 for containing water, a steam generator 8 communicating with the tank 7 , and a feeding circuit 9 for feeding the steam produced by the generator 8 itself into the chamber 3 .
- the tank 7 comprises two shells 10 , each of which preferably presents a substantially U-shaped form, is cup-shaped, presents a concavity facing the other shell 10 , and is made of a polymeric material, in particular an injection-moulded polymeric material.
- the U-shaped form of each shells 10 allows the tank 7 to be mounted on a back wall of an oven surrounding a motor device (not shown in the figures) arranged on a seat 50 formed on said back wall.
- One of the shells 10 (hereinafter referred to as 10 a ) preferably presents a coupling rib 11 , which extends along a peripheral edge 12 of the shell 10 a , presents an annular shape, and, when the shells are coupled, it is housed inside an annular coupling seat 13 , which is obtained along a peripheral edge 14 of the other shell (hereinafter referred to as 10 b ).
- the two shells 10 a , 10 b are coupled to each other along a junction line 15 ( FIG. 1 ), which extends in a containing plane that is substantially parallel to the opening (not shown) of the chamber 3 .
- the shells 10 a , 10 b are permanently connected to each other along the line 15 without the interposition of gaskets, in particular by means of welding, preferably but not necessarily by means of vibration welding.
- the tank 7 presents a first sleeve 16 , which is manufactured as one single piece together with the shell 10 a , is preferably obtained substantially in correspondence to one lateral end of an upper section of the edge 12 , projects upwards from the shell 10 a , and is connected to a filling duct 17 for filling the tank 7 itself.
- the duct 17 extends between the wall 4 and the sleeve 16 , and comprises an inlet section 18 inclined downwards and a substantially vertical outlet section 19 , which are suited to allow the tank 7 to be filled with water by gravity.
- the tank 7 is provided, furthermore, with an air trap 20 , which is manufactured partly on the shell 10 a and partly on the shell 10 b , and is obtained at the inlet of the sleeve 16 , so as to prevent the steam from flowing along the duct 17 and from leaving the oven 1 through the wall 4 .
- the tank 7 presents, furthermore, a second sleeve 21 , which is manufactured as one single piece together with the shell 10 a , is preferably obtained in correspondence to an intermediate point of the upper section of the edge 12 , projects upwards from the shell 10 a , and is threaded on the outside, so as to allow the screwing of a level sensor 22 .
- the sensor 22 comprises a support rod 23 projecting inside the tank 7 , and a float 24 , which is coupled to the rod 23 in a sliding manner, so as to move between a lowered position corresponding to the minimum water level in the tank 7 and a raised position corresponding to the maximum water level in he tank 7 itself.
- the position of the float along the rod 23 can be sensed by a sensing device, known per se, that outputs a signal to a display device indicating intelligibly to a user, in one case, the emptying of the tank 7 and, in the other case, the complete filling of the tank 7 itself.
- the tank 7 is provided, furthermore, with a third sleeve 25 , which is manufactured as one single piece together with the shell lea, is preferably obtained in correspondence to a lateral end of a lower section of the edge 12 , projects downwards from the shell 10 a , and allows an overflow duct 26 to be connected to the tank 7 .
- a third sleeve 25 which is manufactured as one single piece together with the shell lea, is preferably obtained in correspondence to a lateral end of a lower section of the edge 12 , projects downwards from the shell 10 a , and allows an overflow duct 26 to be connected to the tank 7 .
- the duct 26 comprises an inlet section 27 , which is substantially vertical and projects inside the tank 7 , and an outlet section 28 , which communicates with the chamber 3 , and is inclined downwards, so as to discharge into the chamber 3 , by gravity, the excess water introduced by a user into the tank 7 .
- the tank 7 presents, furthermore, a fourth sleeve 29 , which is manufactured as one single piece together with the shell 10 a , is preferably obtained in correspondence to a lateral end of the lower section of the edge 12 opposite to the sleeve 25 , projects downwards from the shell 10 a , and allows the tank 7 to be connected to the upper end of a substantially vertical duct 30 , which defines part of the steam generator 8 , and is associated to a heating device 31 , which is mounted on the duct 30 itself.
- the generator 8 feeds through the sleeve 29 a mixture, which consists partly of steam and partly of water, and is caused to move forward into a separation chamber 32 , which is shaped so as to allow the separation of water from the steam.
- the chamber 32 is preferably obtained in correspondence to an upper lateral portion of the tank 7 , extends both above the level defined by the inlet of the overflow duct 26 and above the level defined by the raised position of the float 24 , and is limited on the upper side by a substantially horizontal inner deflector 33 , which is manufactured as one single piece together with the shell 10 a , and projects inside the tank 7 perpendicular to a bottom wall 34 of the shell 10 a , so as to deviate downwards and into the tank 7 the water fed through the sleeve 29 .
- the chamber 32 communicates with the feeding circuit 9 by means of a fifth sleeve 35 , which is manufactured as one single piece together with the shell 10 a , is preferably obtained in correspondence to a lateral end of the upper section of the edge 12 opposite to the sleeve 16 , projects horizontally from the wall 34 along a direction which is perpendicular to the horizontal direction 5 and to the opening provided for introducing food products inside the chamber 3 .
- Said fifth sleeve 35 allows the tank 7 to be connected to a feeding duct 36 , which defines part of the feeding circuit 9 , and feeds the steam to at least one delivery nozzle (not shown), which is mounted inside the chamber 3 .
- the tank 7 presents, furthermore, a sixth sleeve 37 , which is manufactured as one single piece together with the shell 10 a , is preferably obtained in correspondence to an intermediate point of the lower section of the edge 12 , and projects downwards from the shell 10 a itself.
- the tank 7 is associated, furthermore, to a filtering device 38 , which is mounted outside and beneath the shells 10 a , lab, and comprises an upper cup-shaped body 39 , which is arranged with its concavity facing downwards, is hooked in a removable manner to the sixth sleeve 37 and to the lower end of the steam generator duct 30 , and is closed by a lower lid 40 , which is mounted in a removable manner on the body 39 itself.
- a filtering device 38 which is mounted outside and beneath the shells 10 a , lab, and comprises an upper cup-shaped body 39 , which is arranged with its concavity facing downwards, is hooked in a removable manner to the sixth sleeve 37 and to the lower end of the steam generator duct 30 , and is closed by a lower lid 40 , which is mounted in a removable manner on the body 39 itself.
- the device 38 presents two ports 41 , which are obtained through a bottom wall of the body 39 and are respectively coupled to the sixth sleeve 37 , so as to admit water inside body 39 , and to the steam generator duct 30 to supply the latter with water and is provided with an outlet 42 , which is obtained through the lid 40 .
- the outlet 42 is preferably interposed between the two ports 41 such that water passing from a port 41 to the other port 41 passes also over outlet 42 .
- the outlet 42 communicates with ports 41 through a perforated annular collar 43 , which projects from the lid 40 into the body 39 , and extends around the outlet 42 , so as to prevent the limescale present in the water to reach the outlet 42 itself.
- the outlet 42 furthermore, is connected to a discharge duct 44 , which extends between the device 38 and the wall 4 , and allows the user to empty the tank 7 .
- the tank 7 is provided with a plurality of substantially vertical dividing baffles 45 (in particular four baffles 45 ), which are manufactured as one single piece together with the shell 10 a , project inside the tank 7 perpendicular to the wall 34 , and are arranged at a given distance from the edge 12 .
- the tank 7 is provided, furthermore, with a plurality of fixing brackets 46 , which are manufactured as one single piece together with the shell 10 a , so a to allow the tank 7 to be fitted to the frame 2 .
- said plurality of fixing brackets 46 may be formed as a single piece part on one of the two shells 10 a , 10 b and part on the other shell.
- each sleeve 16 and/or 21 and/or 25 and/or 29 and/or 35 and/or 37 is manufactured as one single piece together with the shell 10 b;
- each sleeve 16 and/or 21 and/or 25 and/or 29 and/or 35 and/or 37 is obtained partly on the shell 10 a and partly on the shell 10 h ; in this way an inlet/outlet opening formed by each of said sleeve is divided by the tank shell junction line 15 .
- each dividing baffle 45 is manufactured as one single piece together with the shell 10 b ;
- each dividing baffle 45 is obtained partly on the shell 10 a and partly on the shell 10 b.
- the tank 7 and the duct 30 of the steam generator 8 are filled with water by the user through the filling duct 17 .
- the heating device 31 is activated, so as to cause the evaporation of a water amount present in the duct 30 .
- the mixture of water and steam generated by the heating of the water present in the duct 30 is fed through the sleeve 29 into the separation chamber 32 , where the water bounces against the deflector 33 , so as to be recirculated again in the tank 7 , while the steam is fed, first of all, through the sleeve 35 , then along the duct 36 of the feeding circuit 9 , and, finally, into the baking chamber 3 .
- the tank 7 may be emptied by the user through the discharge duct 44 ;
- the position and the shape of the filtering device 38 allow an easy maintenance and cleaning of the filtering device 38 itself by simply removing the lid 40 from the body 39 ;
- the permanent connection of the shells 10 a , 10 b does not require the use of gaskets and allows the whole tank 7 to be inserted in the assembly line of the oven 1 ; and the fact that the separation chamber 32 is built-in in the tank 7 allows a reduction of the number of components used while assembling the oven 1 itself.
- a tank 7 made according to the invention allows an easy installation of a water level sensor device 22 that may be inspected/removed by the tank 7 at any time.
- the provision of one or more sleeve 16 , 21 , 25 , 29 , 35 , 37 formed partly on the shell 10 a and partly on the shell 10 b simplify the manufacture process of the tank 7 because reduces the number of runners to be installed in a mould when forming each of the two shells 10 a , 10 b .
- the joining direction of the shells 10 a , 10 b of the tank 7 is the same as the demoulding direction of each of the shells in the injection-moulding machine, and it is perpendicular to the tank shells assembly plane.
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- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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Abstract
The present invention relates to a steam system for a steam cooking appliance. The steam system includes a steam generator and a precipitator. The precipitator is arranged above the steam generator. The steam generator comprises two vertical heating pipe sections. Upper ends of the heating pipe sections are connected to a bottom side of the precipitator. Lower ends of the heating pipe sections are connected by a transverse pipe section. At least the heating pipe sections are at least partially enclosed by one of more heating elements. An inlet pipe is connected to the transverse pipe section at one end and connected or connectable to a water reservoir or water pump at another end. A return pipe is interconnected between the bottom side of the precipitator and the transverse pipe section. Further, the present invention relates to a corresponding steam cooking appliance.
Description
- This application is a continuation of U.S. application Ser. No. 16/434,315 filed on Jun. 7, 2019, which is a continuation of U.S. application Ser. No. 14/375,666 filed Jul. 30, 2014, which is a US National Phase of PCT/EP2013/054958 filed on Mar. 12, 2013, the contents of all of which are incorporated herein by reference.
- The present invention refers to an oven for baking food products.
- In particular, the present invention is relative to an oven of the type comprising a baking chamber provided with a door for the introduction of the food products to be baked; a support frame, which extends around the baking chamber, and is thermally insulated from the baking chamber itself; a heating device, which is arranged inside the baking chamber, so as to provide the heat needed to bake the food products; and a feeding device for feeding steam into the baking chamber itself.
- Generally, a feeding device of known type comprises a water tank, which is fitted to the support frame, a tank filling duct, to which the user has access from a front wall of the oven, a discharge duct for discharging the water contained in the tank outside of the oven, a steam generator, which communicates with the tank, and a feeding circuit for feeding the steam produced by the steam generator into the baking chamber.
- In order to prevent water from being fed into the feeding circuit and, thus, into the baking chamber, the feeding device comprises, furthermore, a separation chamber, which is separate from the tank, is arranged between the steam generator and the feeding circuit, and is suitable to separate the water from the steam and to recirculate the water again to the inlet of the steam generator.
- The tank normally comprises a cup-shaped container, and a closing lid, which is mounted on the cup-shaped container in a removable manner and is coupled in a fluid-tight manner to the cup-shaped container itself by means of the interposition of a plurality of gaskets.
- The feeding device presents, furthermore, a filter, which is normally mounted inside the tank, so as to filter the water fed to the aforementioned discharge duct, and a level sensor for controlling the water level inside the tank itself.
- The known ovens for baking food products of the type described above present some drawbacks, which are mainly caused by the fact that the tank is relatively complex and expensive to be produced due to the presence of the cup-shaped container, of the closing lid, and of the gaskets, i.e. of a relatively high number of components.
- Furthermore, the assembling of the cup-shaped container, of the closing lid, and of the gaskets has to be performed along the assembly line of the oven and leads, therefore, to a relatively long assembling cycle and to the possibility of assembling mistakes.
- The drawbacks described above are further increased by the fact that the aforementioned separation chamber is distinct and separate from the tank and has to be connected to the tank itself by means of the interposition of a feeding duct.
- It is an object of the present invention to provide an oven for baking food products designed to eliminate the aforementioned drawbacks in a straightforward, relatively low-cost manner.
- According to the present invention, there is provided an oven for baking food products as claimed in any of the following claims.
- The present invention will now be described with reference to the accompanying drawings, which show a non-limiting embodiment, wherein:
-
FIG. 1 shows a first schematic rear view in perspective of a preferred embodiment of the oven according to the present invention; -
FIG. 2 shows a second schematic rear view in perspective, with parts removed for clarity, of the oven ofFIG. 1 ; -
FIG. 3 shows a schematic view in perspective, with sectioned parts and parts removed for clarity, of a first detail of the oven ofFIGS. 1 and 2 ; and -
FIG. 4 shows an exploded view in perspective of a second detail of the oven ofFIGS. 1 and 2 . -
Number 1 inFIGS. 1 and 2 indicates as a whole an oven for baking food products comprising asupport frame 2 and abaking chamber 3, which is housed inside theframe 2 and is thermally insulated from theframe 2 itself by means of the interposition of a known insulating material, which is not shown. - The
chamber 3 presents an opening (not shown), which allows the food products to be introduced inside thechamber 3, it is formed in correspondence to afront wall 4 of theoven 1, it extends in a substantially vertical containing plane, and is closed by a door (not shown), which is hinged to theframe 2 so as to rotate, with respect to theframe 2 itself, around a fulcrum axis (not shown), which may be parallel or perpendicular to a substantiallyhorizontal direction 5. - The
oven 1 is provided, furthermore, with aheating device 51, which is arranged inside thechamber 3, so as to provide the heat needed to bake the food products present inside thechamber 3 itself. - The
oven 1 comprises, furthermore, afeeding unit 6, which is suited to feed steam into thechamber 3, and comprises, in turn, atank 7 for containing water, asteam generator 8 communicating with thetank 7, and afeeding circuit 9 for feeding the steam produced by thegenerator 8 itself into thechamber 3. - As shown in
FIG. 4 , thetank 7 comprises two shells 10, each of which preferably presents a substantially U-shaped form, is cup-shaped, presents a concavity facing the other shell 10, and is made of a polymeric material, in particular an injection-moulded polymeric material. The U-shaped form of each shells 10 allows thetank 7 to be mounted on a back wall of an oven surrounding a motor device (not shown in the figures) arranged on aseat 50 formed on said back wall. - One of the shells 10 (hereinafter referred to as 10 a) preferably presents a
coupling rib 11, which extends along aperipheral edge 12 of theshell 10 a, presents an annular shape, and, when the shells are coupled, it is housed inside anannular coupling seat 13, which is obtained along aperipheral edge 14 of the other shell (hereinafter referred to as 10 b). - After the
rib 11 has been inserted into theseat 13, the twoshells FIG. 1 ), which extends in a containing plane that is substantially parallel to the opening (not shown) of thechamber 3. Theshells line 15 without the interposition of gaskets, in particular by means of welding, preferably but not necessarily by means of vibration welding. - With reference to
FIGS. 1, 2, and 4 , thetank 7 presents afirst sleeve 16, which is manufactured as one single piece together with theshell 10 a, is preferably obtained substantially in correspondence to one lateral end of an upper section of theedge 12, projects upwards from theshell 10 a, and is connected to afilling duct 17 for filling thetank 7 itself. - The
duct 17 extends between thewall 4 and thesleeve 16, and comprises aninlet section 18 inclined downwards and a substantiallyvertical outlet section 19, which are suited to allow thetank 7 to be filled with water by gravity. - The
tank 7 is provided, furthermore, with anair trap 20, which is manufactured partly on theshell 10 a and partly on theshell 10 b, and is obtained at the inlet of thesleeve 16, so as to prevent the steam from flowing along theduct 17 and from leaving theoven 1 through thewall 4. - The
tank 7 presents, furthermore, asecond sleeve 21, which is manufactured as one single piece together with theshell 10 a, is preferably obtained in correspondence to an intermediate point of the upper section of theedge 12, projects upwards from theshell 10 a, and is threaded on the outside, so as to allow the screwing of alevel sensor 22. - The
sensor 22 comprises asupport rod 23 projecting inside thetank 7, and afloat 24, which is coupled to therod 23 in a sliding manner, so as to move between a lowered position corresponding to the minimum water level in thetank 7 and a raised position corresponding to the maximum water level in he tank 7 itself. The position of the float along therod 23 can be sensed by a sensing device, known per se, that outputs a signal to a display device indicating intelligibly to a user, in one case, the emptying of thetank 7 and, in the other case, the complete filling of thetank 7 itself. - The
tank 7 is provided, furthermore, with athird sleeve 25, which is manufactured as one single piece together with the shell lea, is preferably obtained in correspondence to a lateral end of a lower section of theedge 12, projects downwards from theshell 10 a, and allows anoverflow duct 26 to be connected to thetank 7. - The
duct 26 comprises aninlet section 27, which is substantially vertical and projects inside thetank 7, and anoutlet section 28, which communicates with thechamber 3, and is inclined downwards, so as to discharge into thechamber 3, by gravity, the excess water introduced by a user into thetank 7. - The
tank 7 presents, furthermore, afourth sleeve 29, which is manufactured as one single piece together with theshell 10 a, is preferably obtained in correspondence to a lateral end of the lower section of theedge 12 opposite to thesleeve 25, projects downwards from theshell 10 a, and allows thetank 7 to be connected to the upper end of a substantiallyvertical duct 30, which defines part of thesteam generator 8, and is associated to aheating device 31, which is mounted on theduct 30 itself. - Due to the water evaporation in the
duct 30, thegenerator 8 feeds through the sleeve 29 a mixture, which consists partly of steam and partly of water, and is caused to move forward into aseparation chamber 32, which is shaped so as to allow the separation of water from the steam. - The
chamber 32 is preferably obtained in correspondence to an upper lateral portion of thetank 7, extends both above the level defined by the inlet of theoverflow duct 26 and above the level defined by the raised position of thefloat 24, and is limited on the upper side by a substantially horizontalinner deflector 33, which is manufactured as one single piece together with theshell 10 a, and projects inside thetank 7 perpendicular to abottom wall 34 of theshell 10 a, so as to deviate downwards and into thetank 7 the water fed through thesleeve 29. - The
chamber 32 communicates with thefeeding circuit 9 by means of afifth sleeve 35, which is manufactured as one single piece together with theshell 10 a, is preferably obtained in correspondence to a lateral end of the upper section of theedge 12 opposite to thesleeve 16, projects horizontally from thewall 34 along a direction which is perpendicular to thehorizontal direction 5 and to the opening provided for introducing food products inside thechamber 3. Saidfifth sleeve 35 allows thetank 7 to be connected to afeeding duct 36, which defines part of thefeeding circuit 9, and feeds the steam to at least one delivery nozzle (not shown), which is mounted inside thechamber 3. - The
tank 7 presents, furthermore, asixth sleeve 37, which is manufactured as one single piece together with theshell 10 a, is preferably obtained in correspondence to an intermediate point of the lower section of theedge 12, and projects downwards from theshell 10 a itself. - With reference to
FIGS. 3 and 4 , thetank 7 is associated, furthermore, to afiltering device 38, which is mounted outside and beneath theshells 10 a, lab, and comprises an upper cup-shaped body 39, which is arranged with its concavity facing downwards, is hooked in a removable manner to thesixth sleeve 37 and to the lower end of thesteam generator duct 30, and is closed by alower lid 40, which is mounted in a removable manner on thebody 39 itself. - The
device 38 presents twoports 41, which are obtained through a bottom wall of thebody 39 and are respectively coupled to thesixth sleeve 37, so as to admit water insidebody 39, and to thesteam generator duct 30 to supply the latter with water and is provided with anoutlet 42, which is obtained through thelid 40. Theoutlet 42 is preferably interposed between the twoports 41 such that water passing from aport 41 to theother port 41 passes also overoutlet 42. - The
outlet 42 communicates withports 41 through a perforatedannular collar 43, which projects from thelid 40 into thebody 39, and extends around theoutlet 42, so as to prevent the limescale present in the water to reach theoutlet 42 itself. Theoutlet 42, furthermore, is connected to adischarge duct 44, which extends between thedevice 38 and thewall 4, and allows the user to empty thetank 7. - In order to limit the heat exchange between the part of the
tank 7 corresponding to thesleeve 16 and to theair trap 20 and the part of thetank 7 corresponding to theseparation chamber 32 and in order to guarantee a correct operation of thesensor 22, thetank 7 is provided with a plurality of substantially vertical dividing baffles 45 (in particular four baffles 45), which are manufactured as one single piece together with theshell 10 a, project inside thetank 7 perpendicular to thewall 34, and are arranged at a given distance from theedge 12. - The
tank 7 is provided, furthermore, with a plurality offixing brackets 46, which are manufactured as one single piece together with theshell 10 a, so a to allow thetank 7 to be fitted to theframe 2. If preferred, said plurality offixing brackets 46 may be formed as a single piece part on one of the twoshells - According to some variants that are not shown:
- each
sleeve 16 and/or 21 and/or 25 and/or 29 and/or 35 and/or 37 is manufactured as one single piece together with theshell 10 b; - each
sleeve 16 and/or 21 and/or 25 and/or 29 and/or 35 and/or 37 is obtained partly on theshell 10 a and partly on the shell 10 h; in this way an inlet/outlet opening formed by each of said sleeve is divided by the tankshell junction line 15. - each dividing
baffle 45 is manufactured as one single piece together with theshell 10 b; and - each dividing
baffle 45 is obtained partly on theshell 10 a and partly on theshell 10 b. - In use, the
tank 7 and theduct 30 of thesteam generator 8 are filled with water by the user through thefilling duct 17. - Once the
float 24 of thelevel sensor 22 has reached a position comprised between its lowered position and its raised position, or a position equal the latter, the food products to be baked have been inserted into thebaking chamber 3, and a steam cooking mode of operation has been selected, theheating device 31 is activated, so as to cause the evaporation of a water amount present in theduct 30. - The mixture of water and steam generated by the heating of the water present in the
duct 30 is fed through thesleeve 29 into theseparation chamber 32, where the water bounces against thedeflector 33, so as to be recirculated again in thetank 7, while the steam is fed, first of all, through thesleeve 35, then along theduct 36 of thefeeding circuit 9, and, finally, into thebaking chamber 3. - With reference to what has been described above, it should be pointed out that:
- the excess water introduced by the user into the
tank 7 through theduct 17 is discharged into thebaking chamber 3 through theoverflow duct 26; - at the end of one or more baking cycles, the
tank 7 may be emptied by the user through thedischarge duct 44; - the position and the shape of the
filtering device 38 allow an easy maintenance and cleaning of thefiltering device 38 itself by simply removing thelid 40 from thebody 39; - the permanent connection of the
shells whole tank 7 to be inserted in the assembly line of theoven 1; and the fact that theseparation chamber 32 is built-in in thetank 7 allows a reduction of the number of components used while assembling theoven 1 itself. - In addition, a
tank 7 made according to the invention allows an easy installation of a waterlevel sensor device 22 that may be inspected/removed by thetank 7 at any time. Furthermore, the provision of one ormore sleeve shell 10 a and partly on theshell 10 b simplify the manufacture process of thetank 7 because reduces the number of runners to be installed in a mould when forming each of the twoshells more sleeve shells tank 7 is the same as the demoulding direction of each of the shells in the injection-moulding machine, and it is perpendicular to the tank shells assembly plane.
Claims (20)
1. A steam feeding unit for feeding steam into a baking chamber of an oven, comprising:
a water tank for storing water;
a steam generator having an inlet and an outlet, said inlet being in fluid communication with said water tank for receiving=water therefrom, said steam generator comprising a heater to heat water therein to convert at least a portion of said water therein to steam; and
a separation chamber having an inlet in fluid communication with said outlet of said steam generator for receiving a mixture of steam and water therefrom, said separation chamber being configured to separate steam and water from said mixture, a first outlet of said separation chamber being in fluid communication with said baking chamber for delivering separated steam thereto, and a second outlet of said separation chamber being in fluid communication with a location upstream of said inlet of said steam generator for recirculating separated water thereto,
wherein said separation chamber is arranged above a maximum fillable water level of said steam feeding unit.
2. The steam feeding unit of claim 1 , further comprising an overflow duct having an inlet section arranged within the water tank, the inlet section defining the maximum fillable water level of the steam feeding unit.
3. The steam feeding unit of claim 1 , said steam generator comprising a duct and a heater configured such that said heater converts liquid water that enters said duct via said inlet of said steam generator to steam as said water proceeds through said duct toward said outlet.
4. The steam feeding unit of claim 3 , said inlet of said steam generator being arranged at a first end of said duct and said outlet of said steam generator being arranged at a second end of said duct.
5. The steam feeding unit of claim 1 , said water tank comprising an outlet in fluid communication with said inlet of said steam generator, said water tank and said steam generator being arranged such that water flows from said outlet of said water tank to said inlet of said steam generator via gravity.
6. The steam feeding unit of claim 1 , said separation chamber configured such that water received at said inlet of said separation chamber flows to said second outlet of said separation chamber via gravity.
7. The steam feeding unit of claim 1 , said first outlet of said separation chamber being arranged above said inlet of said separation chamber.
8. The steam feeding unit of claim 1 , said second outlet of said separation chamber configured such that water exits said separation chamber through said second outlet via gravity.
9. The steam feeding unit of claim 1 , said second outlet of said separation chamber being arranged above said location upstream of said inlet of said steam generator such that water that exits said second outlet of said separation chamber flows to said inlet of said steam generator via gravity.
10. The steam feeding unit of claim 1 , said inlet of said separation chamber being arranged above said outlet of said steam generator.
11. The steam feeding unit of claim 1 , further comprising a discharge duct fluidly connected to both the water reservoir and the steam generator, such that the discharge duct can drain both the water reservoir and the steam generator.
12. The steam feeding unit of claim 11 , said discharge duct being connected to a filtering device configured to filter water reserved therein from said water reservoir, the filtering device being connected in fluid communication between the water reservoir and the steam generator.
13. The steam feeding unit of claim 1 , further comprising a feeding duct having a first end connected to said first outlet of said separation chamber and a second end connected to said baking chamber.
14. A method of operating the steam feeding unit of claim 1 , said method comprising the steps of:
delivering said water from said water tank to said steam generator,
heating said water in said steam generator to produce the mixture of water and steam,
delivering said mixture of water and steam to said separation chamber,
within said separation chamber, separating said mixture into a water component and a steam component,
recirculating said water component to the location upstream of said steam generator, and
delivering said steam component to said baking chamber.
15. The method of claim 14 , wherein:
the steam component is fed from the separation chamber to a feeding duct having a first end connected to said separation chamber and a second end connected to said baking chamber, and then
the steam component is delivered from said feeding duct to said baking chamber
16. The method of claim 14 , wherein said step of delivering water from said water tank to said steam generator is carried out by gravity.
17. The method of claim 14 , wherein said step of delivering said mixture of water and steam to said separation chamber occurs via upward flow.
18. The method of claim 14 , wherein said steam component separated from said mixture in said separation chamber flows upward therein to said first outlet of said separation chamber en route to said baking chamber, and said water component separated from said mixture in said separation chamber flows downward therein by gravity to said second outlet of said separation chamber en route to said inlet of said steam generator.
19. An oven comprising:
a baking chamber; and
a steam feeding unit for feeding steam into the baking chamber, the steam feeding unit comprising:
a water tank for storing water;
a steam generator having an inlet and an outlet, said inlet being in fluid communication with said water tank for receiving water therefrom, said steam generator configured to heat water therein to convert at least a portion of said water therein to steam; and
a separation chamber having an inlet being in fluid communication with said outlet of said steam generator for receiving a mixture of steam and water therefrom, said separation chamber being configured to separate steam and water from said mixture, a first outlet of said separation chamber being in fluid communication with said baking chamber for delivering separated steam thereto, and a second outlet of said separation chamber being in fluid communication with a location upstream of said inlet of said steam generator for recirculating separated water thereto,
wherein said separation chamber is arranged above a maximum fillable water level of said steam feeding unit.
20. A steam feeding unit for feeding steam into a baking chamber of an oven, comprising:
a water tank for storing water;
a steam generator having an inlet and an outlet, said inlet being in fluid communication with said water tank for receiving water therefrom, said steam generator comprising a heater to heat water therein to convert at least a portion of said water therein to steam; and
a separation chamber having only one inlet for moisture, said inlet being in fluid communication with said outlet of said steam generator for receiving a mixture of steam and water therefrom, said separation chamber being configured to separate steam and water from said mixture, a first outlet of said separation chamber being in fluid communication with said baking chamber for delivering separated steam thereto, and a second outlet of said separation chamber being in fluid communication with a location upstream of said inlet of said steam generator for recirculating separated water thereto,
wherein said separation chamber is arranged above a maximum fillable water level of said steam feeding unit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17/896,307 US20220404035A1 (en) | 2012-04-11 | 2022-08-26 | Oven for baking food products |
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP12163668.2 | 2012-04-11 | ||
EP12163668.2A EP2650615B2 (en) | 2012-04-11 | 2012-04-11 | Oven for baking food products |
PCT/EP2013/054958 WO2013152912A1 (en) | 2012-04-11 | 2013-03-12 | Oven for baking food products |
US201414375666A | 2014-07-30 | 2014-07-30 | |
US16/434,315 US11466868B2 (en) | 2012-04-11 | 2019-06-07 | Oven for baking food products |
US17/896,307 US20220404035A1 (en) | 2012-04-11 | 2022-08-26 | Oven for baking food products |
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US16/434,315 Continuation US11466868B2 (en) | 2012-04-11 | 2019-06-07 | Oven for baking food products |
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US20220404035A1 true US20220404035A1 (en) | 2022-12-22 |
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US14/375,666 Active 2034-04-09 US10344988B2 (en) | 2012-04-11 | 2013-03-12 | Oven for baking food products |
US16/434,315 Active 2033-09-13 US11466868B2 (en) | 2012-04-11 | 2019-06-07 | Oven for baking food products |
US17/896,307 Pending US20220404035A1 (en) | 2012-04-11 | 2022-08-26 | Oven for baking food products |
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US14/375,666 Active 2034-04-09 US10344988B2 (en) | 2012-04-11 | 2013-03-12 | Oven for baking food products |
US16/434,315 Active 2033-09-13 US11466868B2 (en) | 2012-04-11 | 2019-06-07 | Oven for baking food products |
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US (3) | US10344988B2 (en) |
EP (1) | EP2650615B2 (en) |
AU (1) | AU2013247086B2 (en) |
WO (1) | WO2013152912A1 (en) |
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EP2705779B1 (en) | 2012-09-10 | 2014-09-03 | Electrolux Home Products Corporation N.V. | A steam system for a steam cooking appliance |
EP2896882B1 (en) | 2014-01-15 | 2022-06-01 | Electrolux Appliances Aktiebolag | Steam generator and household appliance |
DE102014112521A1 (en) * | 2014-09-01 | 2016-03-03 | Miele & Cie. Kg | Cooking appliance |
EP3865028A1 (en) | 2017-08-09 | 2021-08-18 | SharkNinja Operating LLC | Cooking device and components thereof |
US11608988B2 (en) * | 2018-04-09 | 2023-03-21 | Whirlpool Corporation | Steam generating system |
US11051654B2 (en) | 2019-02-25 | 2021-07-06 | Sharkninja Operating Llc | Cooking device and components thereof |
WO2020176477A1 (en) | 2019-02-25 | 2020-09-03 | Sharkninja Operating Llc | Cooking system with guard |
DE102019111796A1 (en) * | 2019-05-07 | 2020-11-12 | Rational Aktiengesellschaft | Assembly with a steam generator and a water connection tank |
US11678765B2 (en) | 2020-03-30 | 2023-06-20 | Sharkninja Operating Llc | Cooking device and components thereof |
EP4050267A1 (en) | 2021-02-25 | 2022-08-31 | Electrolux Appliances Aktiebolag | Cooking oven |
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-
2012
- 2012-04-11 EP EP12163668.2A patent/EP2650615B2/en active Active
-
2013
- 2013-03-12 AU AU2013247086A patent/AU2013247086B2/en active Active
- 2013-03-12 US US14/375,666 patent/US10344988B2/en active Active
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2019
- 2019-06-07 US US16/434,315 patent/US11466868B2/en active Active
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2022
- 2022-08-26 US US17/896,307 patent/US20220404035A1/en active Pending
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AU2013247086B2 (en) | 2017-04-20 |
US20150300654A1 (en) | 2015-10-22 |
US10344988B2 (en) | 2019-07-09 |
EP2650615A1 (en) | 2013-10-16 |
AU2013247086A1 (en) | 2014-08-07 |
EP2650615B2 (en) | 2024-05-15 |
WO2013152912A1 (en) | 2013-10-17 |
EP2650615B1 (en) | 2018-01-10 |
US20190285285A1 (en) | 2019-09-19 |
US11466868B2 (en) | 2022-10-11 |
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