WO2013126478A1 - Dishwashing machine of the hood movable type and associated method of hood manufacturing - Google Patents
Dishwashing machine of the hood movable type and associated method of hood manufacturing Download PDFInfo
- Publication number
- WO2013126478A1 WO2013126478A1 PCT/US2013/026977 US2013026977W WO2013126478A1 WO 2013126478 A1 WO2013126478 A1 WO 2013126478A1 US 2013026977 W US2013026977 W US 2013026977W WO 2013126478 A1 WO2013126478 A1 WO 2013126478A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- roof
- edge
- hood
- lateral wall
- edges
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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Classifications
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/0076—Washing or rinsing machines for crockery or tableware of non-domestic use type, e.g. commercial dishwashers for bars, hotels, restaurants, canteens or hospitals
- A47L15/0081—Washing or rinsing machines for crockery or tableware of non-domestic use type, e.g. commercial dishwashers for bars, hotels, restaurants, canteens or hospitals with vertical sliding closing doors, e.g. hood-type dishwashers
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- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4251—Details of the casing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/10—Spot welding; Stitch welding
- B23K11/11—Spot welding
- B23K11/115—Spot welding by means of two electrodes placed opposite one another on both sides of the welded parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/007—Spot arc welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/18—Sheet panels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
Definitions
- the object of the present invention is to provide a dishwashing machine for professional use of the above- described type, which overcomes the above-described drawbacks, in which the fluid-tight fixing of the lateral walls of the hood to the roof panel can be carried out in a simply and quick manner, even working at different times, with low energy consumptions and without producing solvent vapors, but still carrying out a reliable and long-lasting j oint .
- a dishwashing machine for professional use is thus provided according to the invention, as defined in claim 1.
- the dishwashing machine comprises a support casing provided at a lower part thereof with a tank, and a hood carried by the casing over the tank so as to vertically slide, with which tank the hood defines in use a washing chamber;
- the hood is made as a monocoque open at the bottom, delimited by respective lateral walls or lateral wall portions and by an upper roof or roof panel mechanically and fluid-tightly connected to the lateral walls or lateral wall portions;
- the roof is made as a single panel peripherally provided with a first edge folded upwards, at a right angle, which first edge is arranged facing a second upper edge defined by respective flat panels delimiting one face of the lateral walls or lateral wall portions .
- a self- leveling sealing adhesive consisting of a modified polysiloxanes-based MS polymer, which is totally free from solvents, as it is polymerized by oxidation obtained by exposure to ambient air, already at room temperature.
- FIG. 1 schematically shows a front elevation view of a movable hood dishwasher made according to the invention
- figure 3 shows a partially cutaway perspective view, on further enlarged scale, of a front detail of the hood in figure 2;
- FIG. 4 shows a perspective view, on further enlarged scale, cutaway according to a trace plane IV-IV of the detail of the hood according to the invention shown in figure 3;
- reference numeral 1 indicates as a whole a dishwashing machine, to which reference will be made hereinafter simply as "dishwasher 1", for shortness, comprising a support casing 2, known and only shown with a broken line and only schematically for simplicity, a tank 3 (figure 1), a vertical back support and guiding panel 4 belonging to casing 2, and a hood 5, carried by casing 2 so as to vertically slide over tank 3, in a known manner and not shown for simplicity, on panel 4.
- hood 5 defines a washing chamber 6 with tank 3, which in use is filled with vapor V, which must be contained within chamber 6.
- hood 5 is internally delimited at the top by a crossbar 29 defining only one portion 8 of a flat lateral wall, for example consisting of a part of a sheet panel facing the interior of hood 5; moreover, hood 5 is preferably open at the back, as in the example shown in figure 5, as it is delimited only by the lateral wall portion 8, which is made with an outer panel 13 of suitably sheared metal sheet, and in use is closed by the vertical guiding panel 4 of casing 2, on which hood 5 is slidingly mounted.
- a pipe 31 made of synthetic plastic material and terminating at crossbar 29 with an L-shaped joint 32 is fixed to crossbar 29, on the side opposite to roof 9, within which pipe at least one control cable 33 of the dishwashing machine 1 is arranged, adapted to allow an electric signals to be transported between hood 5 and casing 2, so that cable 33, referred to as "flat cable”, is insulated from the interior of hood 5.
- Pipe 31 is arranged between the crossbar 29 and the guiding panel 4 of casing 2 and has such a length as to extend into casing 2 (figure 1) when hood 5 defines the washing chamber 6 with tank 3.
- Roof 9 has a generally quadrangular profile in plan view and channel 20 peripherally extends all around roof 9, along four sides 34 (figure 2) of roof 9 defined by edge 11, which perpendicularly projects so as to protrude from roof 9, at the top of the same; moreover, the second edge 12 is seamlessly arranged all around roof 9, which second edge is defined and delimited by the upper edges of walls 7 (of panels 13) and by the possible crossbar 29 defined by the wall portion 8.
- the end portions 19 of edge 11 are coupled to each other at an angle in an abutting manner, as the side pitches of an house roof (figure 3), so that a concavity 36 of channel 20, facing the outside of hood 5 and filled with sealing adhesive 21, is continuous and seamless.
- the polymer sealing adhesive 21 which forms the sealing bead 22 of joint 18 consists, according to an aspect of the invention, of a modified polysiloxanes-based MS polymer available on the market, for example LOXEAL 59-42® is used.
- Such a method further includes the step of mechanically joining together the portions 16, proximal to roof 9, of edges 11 and 12 by means of electric welding spots 17, so as to create a mechanical joint 18 between roof 9 and the lateral walls 7 or lateral wall portions 8; and after the welding step, filling channel 20 with a self-leveling polymerizable sealing adhesive 21 and allowing the sealing adhesive to polymerize so as to form a continuous bead 22 of polymerized sealing adhesive within channel 20, which joins the first edge 11 to the second edge 12 in a fluid-tight manner, thus sealing joint 18.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Superstructure Of Vehicle (AREA)
- Washing And Drying Of Tableware (AREA)
Description
DISHWASHING MACHINE OF THE HOOD MOVABLE TYPE
AND ASSOCIATED METHOD OF HOOD MANUFACTURING
TECHNICAL FIELD
The present invention relates to a professional dishwashing machine, of the type in which the washing chamber is defined by a tank and by a hood, vertically movable with respect to the tank, for allowing the dishes arranged on a dedicated basket to be placed onto and be removed from the tank .
BACKGROUND ART
Such a type of dishwashing machine is known, for example, from US-A-4536043. The hood is defined by a box- shaped monocoque having a generally parallelepiped shape, made with welded sheet panels; the lateral walls are generally made with facing flat panels, between which an insulation is placed; the hood is open at the bottom, towards the tank, and may also be open at the back, being delimited on such a side only by an upper crossbar, the back side of the hood being closed, in use, by a supporting and guiding panel of the dishwasher, on which the hood slides for carrying out said vertical movement; at the top, the hood is closed by an upper roof or roof panel made as a single panel of press drawn metal sheet, which must be fluid-tightly fixed, along the whole periphery thereof, to the lateral walls and to the back crossbar.
In known dishwashers, such fixing is carried out by providing the upper roof or roof panel with L-shaped edges folded upwards, which are arranged facing the lateral walls and the possible back crossbar, and are then welded with a continuous bead, at the upper ends of the L-shaped edges and at the lateral walls. The continuous welding allows both the reciprocal fixing of the roof panel to the walls and to the crossbar to be carried out simultaneously, and a fluid-tight connection to be made upwards which in use prevents the vapor formed in the washing chamber from escaping. However, such a continuous welding must be usually carried out with the TIG method (the sheets being made of stainless steel), and thus by using specialized personnel and with high costs. The assembly time is also relatively long.
In order to overcome such a drawback, it is also known to join the L-shaped folded edges by means of spot welding carried out by sandwiching the opposite vertical faces of the L-shaped folded edges of the roof panel and of the lateral walls of the hood against each other, after interposing an electrically conductive acetate solvent- and silicone-based sealing adhesive between the L-shaped folded edges of the roof panel and of the lateral walls, which after the welding acts as continuous sealer. However, in this case, the welding must be carried out immediately after the adhesive laying and before it dries up, if not the electric spot welding is no
longer possible, since the adhesive loses the electric conductivity which is linked to the presence of solvents.
Moreover, both the use of solvents that are vaporized by the welding operation and the use of continuous TIG welding, produce pollution and high energy waste.
DISCLOSURE OF INVENTION
The object of the present invention is to provide a dishwashing machine for professional use of the above- described type, which overcomes the above-described drawbacks, in which the fluid-tight fixing of the lateral walls of the hood to the roof panel can be carried out in a simply and quick manner, even working at different times, with low energy consumptions and without producing solvent vapors, but still carrying out a reliable and long-lasting j oint .
A dishwashing machine for professional use is thus provided according to the invention, as defined in claim 1.
In particular, the dishwashing machine according to the invention comprises a support casing provided at a lower part thereof with a tank, and a hood carried by the casing over the tank so as to vertically slide, with which tank the hood defines in use a washing chamber; the hood is made as a monocoque open at the bottom, delimited by respective lateral walls or lateral wall portions and by an upper roof or roof panel mechanically and fluid-tightly connected to the lateral
walls or lateral wall portions; the roof is made as a single panel peripherally provided with a first edge folded upwards, at a right angle, which first edge is arranged facing a second upper edge defined by respective flat panels delimiting one face of the lateral walls or lateral wall portions .
According to a first aspect of the invention, the first and second edges comprise respective first flat portions, immediately adjacent to the roof, which are arranged in direct contact with each other and are mechanically joined to each other by means of electric welding spots, so as to define a mechanical head-to-head joint therebetween; in combination, at least one of said first and second edges is provided with a second portion, distal from the roof, folded in such a direction to move away from the edge facing thereof and to delimit a channel open at the top between the first and second edges, which channel is filled with a polymer sealing adhesive which forms a continuous bead within the channel, which joins the first and second edges together in a fluid-tight manner so as to seal said joint.
Moreover, the second portion, distal from the roof, folded in a direction so as to move away from the edge facing thereof, is an end portion of the first edge, which is folded at an acute angle on the side facing the roof and faces a second portion of the second edge, distal from the roof,
which is flat and coplanar to the first portion, so that the transversal width of the channel, measured perpendicularly to the first portions, gradually narrows towards the joint.
Thereby, a safe mechanical joint is created between the roof edge and the edge defined by the lateral walls or lateral wall portions, using little energy since the spot welding is carried out on metal parts placed directly in contact, without the interposition of adhesives. Moreover, no solvent vapors are produced during the operation of welding, and especially the welding operation can be carried out by non specialized operators or even automatically and separate from the laying of the sealing adhesive, which may be carried out even at a long distance in time from the operation of welding, thus allowing the two operations to be optionally carried out at different plants.
The channel that is formed by the folded edge further aids the laying of the adhesive, acting as a guide, and allows a safe sealing of the joint to be obtained.
According to a further aspect of the invention, a self- leveling sealing adhesive is used, consisting of a modified polysiloxanes-based MS polymer, which is totally free from solvents, as it is polymerized by oxidation obtained by exposure to ambient air, already at room temperature.
Finally, due to the above-described structure of the joint, the back wall of the hood can be made open and shaped
as a crossbar, to which a pipe made of synthetic plastic material and terminating at the crossbar with an L-shaped joint is fixed, on the side opposite to the roof, within which pipe at least one control cable of the dishwashing machine is arranged, adapted to allow electric signals to be transported between hood and casing, so that the at least one electric cable is insulated from the interior of the hood.
Finally, the invention relates to a method of manufacturing a hood of a dishwashing machine of the vertically movable hood type according to claim 10.
BRIEF DESCRIPTION OF THE DRAWINGS
Further objects and advantages of the invention will become apparent from the following description of a non- limiting embodiment thereof, provided by way of mere example and with reference to the figures of the accompanying drawings, in which:
- figure 1 schematically shows a front elevation view of a movable hood dishwasher made according to the invention;
- figure 2 shows a perspective three-quarter front view, on enlarged scale, of the movable hood of the dishwasher in figure 1;
- figure 3 shows a partially cutaway perspective view, on further enlarged scale, of a front detail of the hood in figure 2;
- figure 4 shows a perspective view, on further enlarged
scale, cutaway according to a trace plane IV-IV of the detail of the hood according to the invention shown in figure 3; and
- figure 5 shows a perspective three-quarter back view, on further enlarged scale, of the hood in figure 2.
BEST MODE FOR CARRYING OUT THE INVENTION
With particular reference to figures 1 to 5, reference numeral 1 indicates as a whole a dishwashing machine, to which reference will be made hereinafter simply as "dishwasher 1", for shortness, comprising a support casing 2, known and only shown with a broken line and only schematically for simplicity, a tank 3 (figure 1), a vertical back support and guiding panel 4 belonging to casing 2, and a hood 5, carried by casing 2 so as to vertically slide over tank 3, in a known manner and not shown for simplicity, on panel 4. In the position shown in figure 1, hood 5 defines a washing chamber 6 with tank 3, which in use is filled with vapor V, which must be contained within chamber 6.
Hood 5 is made as a monocoque open at the bottom, in the example shown having a substantially parallelepiped shape, delimited by respective lateral walls 7 or by lateral wall portions 8 (figure 5) and by a roof or upper roof panel 9 mechanically and fluid-tightly connected to the lateral walls 7 or lateral wall portions 8.
Roof 9 is made as a single sheet panel 10 peripherally provided with a first edge 11 folded upwards, at a right
angle, which first edge is arranged facing a second upper edge 12 defined as a whole by respective flat panels 13 made of metal sheet, preferably of stainless steel, like panel 10 as well, each delimiting a face of the lateral walls 7 or lateral wall portions 8.
In the embodiment shown, each lateral wall 7 is formed by coupling a flat panel 14 of stainless steel sheet (figure 4) which defines an inner face of the lateral wall 7 of hood 5 to a panel 13 defining an outer face of the lateral wall 7, arranged mutually facing, between which an insulation 15 is arranged .
The first edge 11 and the second edge 12 comprise respective first flat portions 16, immediately adjacent to roof 9, and which according to an aspect of the invention are arranged in direct contact with each other (thus, without the interposition of adhesives, as it happens in the prior art) and are mechanically joined to each other by means of electric welding spots 17 (figure 4) so as to define a mechanical head-to-head joint 18 therebetween; in combination, at least one of edges 11, 12 is provided with a second portion 19, distal from roof 9, folded in such a direction to move away from the edge facing portion 19 and to delimit a channel 20 open at the top between edges 11 and 12, which channel 20 is filled with a polymer sealing adhesive 21 which forms a continuous bead 22 within channel 20, which
joins edges 11 and 12 together in a fluid-tight manner so as to seal joint 18.
In the preferred embodiment shown, portion 19 which is distal from roof 9 and folded in a direction so as to move away from the edge facing thereof, is an end portion of edge 11, which is that integrally obtained with roof 9; in particular, the portion 19 of edge 11 is folded at an acute angle on the side facing roof 9 (i.e. so as to move away from edge 12) and faces a second end portion 23 of edge 12, also distal from roof 9, which is flat and coplanar to the portion 16 of edge 12, so that the transversal width of channel 20, measured perpendicularly to portions 16, gradually narrows towards joint 18. On the one hand, this embodiment aids the laying of the sealing adhesive 21 and the filling of channel 20, and on the other hand reduces the overall dimensions of the connection between edges 11 and 12.
Again in order to optimize the overall dimensions and the performance of the connection between edges 11 and 12, edge 12 is defined by the upper edge of panels 13 of the lateral walls 7, i.e. by the edge of the outermost panels farthest from roof 9, which define the outer faces of hood 5. Moreover, edge 12 has a first L-shaped fold 24 (figure 4) facing the innermost panel 14 facing the same and which defines a first flat wing 25 of edge 12 arranged so as to be substantially horizontal and parallel to roof 9,
substantially flushed with the same; edge 12 also has a second L-shaped fold 26, subsequent to the first fold and defining a second flat wing 27 of edge 12 arranged so as to be substantially vertical and flushed with the inner panel 14 and which forms both portion 16 and portion 23 of edge 12; according to such a construction, panels 14 have an upper Infolded edge 28 immediately under roof 9 and on which roof 9 rests in direct contact.
As schematically shown in figure 5, at the back, hood 5 is internally delimited at the top by a crossbar 29 defining only one portion 8 of a flat lateral wall, for example consisting of a part of a sheet panel facing the interior of hood 5; moreover, hood 5 is preferably open at the back, as in the example shown in figure 5, as it is delimited only by the lateral wall portion 8, which is made with an outer panel 13 of suitably sheared metal sheet, and in use is closed by the vertical guiding panel 4 of casing 2, on which hood 5 is slidingly mounted.
In any case, edge 12 is delimited at the back by an upper edge 30 of crossbar 29, which also has a first flat portion identical to portion 16 shown in figure 4, arranged facing and in direct contact with the flat portion 16 of edge 11 (not shown in figure 5, as it is covered by edge 30) to which it is mechanically jointed by means of electric welding spots 17, so as to also define joint 18 at the back; at the
back as well, portion 19 of edge 11, distal from roof 9, is folded at an acute angle on the side facing roof 9, and faces portion 23 of edge 12 defined by a portion of the upper edge 30, so as to also form channel 20 at the back.
By virtue of to such a structure, a pipe 31 made of synthetic plastic material and terminating at crossbar 29 with an L-shaped joint 32 is fixed to crossbar 29, on the side opposite to roof 9, within which pipe at least one control cable 33 of the dishwashing machine 1 is arranged, adapted to allow an electric signals to be transported between hood 5 and casing 2, so that cable 33, referred to as "flat cable", is insulated from the interior of hood 5. Pipe 31 is arranged between the crossbar 29 and the guiding panel 4 of casing 2 and has such a length as to extend into casing 2 (figure 1) when hood 5 defines the washing chamber 6 with tank 3.
Roof 9 has a generally quadrangular profile in plan view and channel 20 peripherally extends all around roof 9, along four sides 34 (figure 2) of roof 9 defined by edge 11, which perpendicularly projects so as to protrude from roof 9, at the top of the same; moreover, the second edge 12 is seamlessly arranged all around roof 9, which second edge is defined and delimited by the upper edges of walls 7 (of panels 13) and by the possible crossbar 29 defined by the wall portion 8. At respective vertical edges 35 of hood 5,
the end portions 19 of edge 11 are coupled to each other at an angle in an abutting manner, as the side pitches of an house roof (figure 3), so that a concavity 36 of channel 20, facing the outside of hood 5 and filled with sealing adhesive 21, is continuous and seamless.
The polymer sealing adhesive 21 which forms the sealing bead 22 of joint 18 consists, according to an aspect of the invention, of a modified polysiloxanes-based MS polymer available on the market, for example LOXEAL 59-42® is used.
As described, it is apparent that the present invention also relates to a method of manufacturing a hood 5 of a dishwashing machine 1 of the vertically movable hood type, where hood 5 consists of a monocoque open at the bottom, delimited by respective lateral walls 7 or lateral wall portions 8 and by a roof or upper roof panel 9 mechanically and fluid-tightly connected to the lateral walls 7 or lateral wall portions 8, which comprises the steps of:
manufacturing roof 9 as a single sheet panel peripherally provided with a first edge 11 folded upwards at a right angle;
- manufacturing the lateral walls 7 or lateral wall portions 8 as flat sheet panels 13 or sheet crossbars 29 defining at the top a second edge 12 all around roof 9;
- arranging the first edge 11 in a position facing the second edge 12; and
- mechanically and fluid-tightly connecting the first edge 11 to the second edge 12; where:
- a portion 19 of edge 11, distal from roof 9, is folded at an acute angle towards roof 9 and corresponding facing flat portions 16 of the first edge 11 and second edge 12, proximal to roof 9, are arranged in reciprocal direct contact so as to arrange the distal portion 19 of the first edge 11, folded at an angle, facing a corresponding portion 23, distal from roof 9, of the second edge 12, so as to form a channel 20 open at the top and delimited between the distal portions 19 and 23 of the first edge 11 and second edge 12 between the first edge 11 and second edge 12, seamlessly all around roof 9.
Such a method further includes the step of mechanically joining together the portions 16, proximal to roof 9, of edges 11 and 12 by means of electric welding spots 17, so as to create a mechanical joint 18 between roof 9 and the lateral walls 7 or lateral wall portions 8; and after the welding step, filling channel 20 with a self-leveling polymerizable sealing adhesive 21 and allowing the sealing adhesive to polymerize so as to form a continuous bead 22 of polymerized sealing adhesive within channel 20, which joins the first edge 11 to the second edge 12 in a fluid-tight manner, thus sealing joint 18.
A modified polysiloxanes-based (MS) sealing adhesive is
used in such a step of filling channel 20 with a sealing adhesive 21, so as to obtain the self-leveling effect, also due to the shape of channel 20, and prevent the emission of any solvent vapor.
Claims
1. A dishwashing machine (1) of the type comprising a support casing (2) provided at a lower part thereof with a tank (3), and a hood (5) carried by the casing over the tank so as to vertically slide, with which tank the hood defines a washing chamber (6) in use; wherein the hood (5) is made as a monocoque open at the bottom, delimited by respective lateral walls (7) or lateral wall portions (8) and by an upper roof or roof panel (9) mechanically and fluid-tightly connected to the lateral walls or lateral wall portions; the roof (9) being made as a single panel (10) peripherally provided with a first edge (11) folded upwards, at a right angle, which first edge is arranged facing a second, upper, edge (12) defined by respective flat panels (13) delimiting one face of the lateral walls or lateral wall portions (8); the first and second edges comprising respective first flat portions (16), immediately adjacent to the roof; characterized in that the first flat portions (16) of the first and second edges are arranged in direct contact with each other and are mechanically joined to each other together by means of electric welding spots (17), so as to define a mechanical head-to-head joint (18) therebetween; and in that, in combination, at least one (11) of said first and second edges is provided with a second portion (19) , distal from the roof, folded in such a direction to move away from the edge facing it and to delimit a channel (20) open at the top between the first and second edges, which channel is filled with a polymeric sealing adhesive (21) which forms a continuous bead (22) within the channel, which joins in fluid-tight manner the first and second edges together so as to seal said joint (18) .
2. A dishwashing machine according to claim 1, characterized in that said second portion (19) , distal from the roof of one of said edges, folded in a direction so as to move away from the edge facing it, is an end portion of the first edge (11), which is folded at an acute angle on the side facing the roof (9) and faces a second portion (23) of the second edge (12), distal from the roof, which is flat and coplanar to the first portion (16), so that the transversal width of said channel (20), measured perpendicularly to the first portions, gradually narrows towards said joint (18) .
3. A dishwashing machine according to claim 1 or 2, characterized in that each lateral wall (7) is formed by first (14) and second (13) mutually facing flat panels coupled together, between which an insulation (15) is arranged, the first panel defining an inner face of the lateral wall (7) of the hood and the second panel defining an outer face of the lateral wall of the hood; said second edge (12) being defined, at least at said lateral walls (7), by the second panels (13) of the lateral walls, and having: a first L-shaped fold (24) facing the first panel and defining a first flat wing (25) of the second edge arranged so as to be substantially horizontal and parallel to the roof, substantially flushed with the same; and a second L-shaped fold (26), subsequent to the first and defining a second flat wing (27) of the second edge arranged so as to be substantially vertical and flushed with the first panel and forming said first portion (16) of the second edge (12), arranged facing and adjacent in direct contact with said first portion (16) of the first edge (11), belonging to the roof (9); the first panels having an upper L-folded edge (28) immediately under the roof and on which the roof rests in direct contact.
4. A dishwashing machine according to one of the preceding claims, characterized in that, at the back, the hood is internally delimited at the top by a crossbar (29) defining only one flat lateral wall portion (8); an upper edge (30) of said crossbar delimiting at the back said second edge (12), which has a first flat portion (16), again at said crossbar (29) , arranged facing and in direct contact with a corresponding first flat portion (16) of the first edge to which it is mechanically joined by means of electric welding spots (17) , so as to also define said joint (18) at the back; said second portion (19) of the first edge, distal from the roof, being folded at an acute angle on the side facing the roof and facing a second portion (23) of the second edge (12), defined by a portion of the upper edge of the crossbar (29) distal from the roof, so as to also form said channel (20) at the back.
5. A dishwashing machine according to claim 4, characterized in that a pipe (31) made of synthetic plastic material and terminating at said crossbar with an L-shaped joint (32) is fixed to said crossbar (29) , on the side opposite to the roof, within which pipe at least one control cable (33) of the dishwashing machine is arranged, being adapted to allow an electric signals to be transported between hood and casing, so that said at least one electric cable (33) is insulated from the interior of the hood.
6. A dishwashing machine according to claim 5, characterized in that said hood (5) is open at the back and, in use, is closed by a vertical guiding panel (4) of the casing, on which guiding panel the hood is slidingly mounted; said pipe (31) made of synthetic plastic material being arranged between the crossbar (29) and said guiding panel (4) of the casing and having a length such as to extend into the casing (2) when said hood defines said washing chamber (6) with the tank.
7. A dishwashing machine according to any one of the preceding claims, characterized in that said roof (9) has a quadrangular profile in plan view and in that said channel peripherally extends all around the roof, along four sides (34) of the roof defined by said first edge (11), which perpendicularly projects so as to protrude from the roof, at the top of the same; said second edge (12) being seamlessly arranged all around the roof, which second edge is delimited by a lateral wall or lateral wall portion of the hood.
8. A dishwashing machine according to claim 7, characterized in that an end portion (19) of the first edge, defining the second portion thereof, distal from the roof, is folded at an acute angle on the side facing the roof so as to define said channel (20) along with said second edge; at respective vertical edges (35) of the hood, the end portions (19) of the first edge (11) being coupled to each other at an angle in a head-to-head manner as the side pitches of an house roof, so that a concavity (36) of said channel, filled with said sealing adhesive, is continuous and seamless.
9. A dishwashing machine according to any one of the preceding claims, characterized in that said polymeric sealing adhesive (21) which forms said sealing bead of the joint consists of a modified polysiloxanes-based MS polymer.
10. A method for manufacturing a hood (5) of a dishwashing machine of the vertically movable hood type, wherein the hood consists of a monocoque open at the bottom, delimited by respective lateral walls or lateral wall portions and by an upper roof (9) or roof panel mechanically and fluid-tightly connected to the lateral walls or lateral wall portions; the method comprising the steps of:
- manufacturing the roof (9) as a single sheet panel (10) peripherally provided with a first edge (11) folded upwards at a right angle;
- manufacturing the lateral walls (7) or lateral wall portions (8) as flat sheet panels (13) or sheet crossbars (29) defining at the top a second edge (12) all around the roof;
- arranging the first edge (11) in a position facing the second edge (12); and
- mechanically and fluid-tightly connecting the first edge to the second edge; characterized in that, in combination :
i) a portion (19) of the first edge (11), distal from the roof, is folded at an acute angle towards the roof;
ii) corresponding facing flat portions (16) of the first and second edges, proximal to the roof, are arranged in reciprocal direct contact so as to arrange the distal portion (19) of the first edge, folded at an angle, facing a corresponding portion (23) , distal from the roof, of the second edge, so as to form a channel (20) open at the top and delimited between the distal portions of the first and second bodies between the first and second edges, seamlessly all around the roof; iii) mechanically joining together the portions (16) proximal to the roof of the first and second edges by means of electric welding spots (17), so as to create a mechanical joint (18) between the roof and the lateral walls or lateral wall portions; and
iv) after the step of welding, filling said channel with a self-leveling, polymerizable sealing adhesive (21) and allowing the sealing adhesive to polymerize so as to form a continuous bead (22) of polymerized sealing adhesive within the channel, which joins the first and second edges in a fluid-tight manner, thus sealing said joint.
11. A method according to claim 10, characterized in that a modified siloxanes-based sealing adhesive (MS) is used at step iv) .
12. A method for manufacturing a hood (5) of a dishwashing machine of the vertically movable hood type, wherein the hood is open at the bottom, delimited by respective lateral walls or lateral wall portions and by an upper roof (9) or roof panel mechanically and fluid-tightly connected to the lateral walls or lateral wall portions; the method comprising the steps of:
- manufacturing the roof (9) as a single sheet panel (10) peripherally provided with a first edge (11) folded upwards at a right angle;
- manufacturing the lateral walls (7) or lateral wall portions (8) as flat sheet panels (13) or sheet crossbars (29) defining at the top a second edge (12) all around the roof;
- arranging the first edge (11) in a position facing the second edge (12); and
- mechanically and fluid-tightly connecting the first edge to the second edge; characterized in that, in combination :
i) a portion (19) of the first edge (11), distal from the roof, is folded at an acute angle towards the roof;
ii) corresponding facing flat portions (16) of the first and second edges, proximal to the roof, are arranged in reciprocal direct contact so as to arrange the distal portion (19) of the first edge, folded at an angle, facing a corresponding portion (23) , distal from the roof, of the second edge, so as to form a channel (20) open at the top and delimited between the distal portions of the first and second bodies between the first and second edges, seamlessly all around the roof;
iii) mechanically joining together the portions (16) proximal to the roof of the first and second edges by means of electric welding spots (17), so as to create a mechanical joint (18) between the roof and the lateral walls or lateral wall portions; and
iv) after the step of welding, filling said channel with a self-leveling, polymerizable sealing adhesive (21) and allowing the sealing adhesive to polymerize so as to form a continuous bead (22) of polymerized sealing adhesive within the channel, which joins the first and second edges in a fluid-tight manner, thus sealing said joint.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ITTO2012A000166 | 2012-02-24 | ||
| IT000166A ITTO20120166A1 (en) | 2012-02-24 | 2012-02-24 | DISHWASHER MACHINE OF THE MOBILE HOOD TYPE AND ASSOCIATED METHOD OF REALIZING THE HOOD |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2013126478A1 true WO2013126478A1 (en) | 2013-08-29 |
Family
ID=46001487
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US2013/026977 Ceased WO2013126478A1 (en) | 2012-02-24 | 2013-02-21 | Dishwashing machine of the hood movable type and associated method of hood manufacturing |
Country Status (2)
| Country | Link |
|---|---|
| IT (1) | ITTO20120166A1 (en) |
| WO (1) | WO2013126478A1 (en) |
Cited By (4)
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|---|---|---|---|---|
| WO2015166149A1 (en) * | 2014-04-30 | 2015-11-05 | Peugeot Citroen Automobiles Sa | Method of assembly by discontinuous thermal welding along the join of a steel sheet with an aluminium sheet, with deposition of a clean material to form a sealed joint on the join |
| WO2017046493A1 (en) * | 2015-09-18 | 2017-03-23 | Peugeot Citroen Automobiles Sa | Assembly of sheet-metal elements comprising a rabbet |
| CN108078521A (en) * | 2017-12-27 | 2018-05-29 | 泰州浩邦科技发展有限公司 | Commercial dish-washing machine upper outlet body |
| CN111436877A (en) * | 2020-04-20 | 2020-07-24 | 上海明略人工智能(集团)有限公司 | Dish washing machine |
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| JPH01107974A (en) * | 1987-10-21 | 1989-04-25 | Hitachi Ltd | Seal structure in sample shop |
| DE3815069A1 (en) * | 1988-05-04 | 1989-11-16 | Dornier Gmbh | Method of producing a corrosion-resistant joint between metallic structural elements by spot welding |
| JP2002253466A (en) * | 2001-03-02 | 2002-09-10 | Sanyo Electric Co Ltd | Tool washer |
| EP1782908A1 (en) * | 2005-11-05 | 2007-05-09 | Audi Ag | Joining by means of adhesive and spot welding in combination |
| US20090205689A1 (en) * | 2008-02-19 | 2009-08-20 | Hoshizaki Denki Kabushiki Kaisha | Dishwasher |
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| US4536043A (en) | 1982-07-19 | 1985-08-20 | Aktiebolaget Electrolux | Operating device in a dish-washing machine |
| JPH01107974A (en) * | 1987-10-21 | 1989-04-25 | Hitachi Ltd | Seal structure in sample shop |
| DE3815069A1 (en) * | 1988-05-04 | 1989-11-16 | Dornier Gmbh | Method of producing a corrosion-resistant joint between metallic structural elements by spot welding |
| JP2002253466A (en) * | 2001-03-02 | 2002-09-10 | Sanyo Electric Co Ltd | Tool washer |
| EP1782908A1 (en) * | 2005-11-05 | 2007-05-09 | Audi Ag | Joining by means of adhesive and spot welding in combination |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015166149A1 (en) * | 2014-04-30 | 2015-11-05 | Peugeot Citroen Automobiles Sa | Method of assembly by discontinuous thermal welding along the join of a steel sheet with an aluminium sheet, with deposition of a clean material to form a sealed joint on the join |
| FR3020583A1 (en) * | 2014-04-30 | 2015-11-06 | Peugeot Citroen Automobiles Sa | METHOD FOR ASSEMBLING SHEETS IN DIFFERENT MATERIALS |
| CN106470788A (en) * | 2014-04-30 | 2017-03-01 | 标致雪铁龙集团 | The assemble method of the thermal weld being interrupted by the interface along steel sheet metal component and aluminum sheet metal component using the deposition being suitable to the material that sealed interface is formed on interface |
| WO2017046493A1 (en) * | 2015-09-18 | 2017-03-23 | Peugeot Citroen Automobiles Sa | Assembly of sheet-metal elements comprising a rabbet |
| FR3041318A1 (en) * | 2015-09-18 | 2017-03-24 | Peugeot Citroen Automobiles Sa | ASSEMBLY OF METAL SHEET ELEMENTS INCLUDING FOLDING |
| CN108026952A (en) * | 2015-09-18 | 2018-05-11 | 标致雪铁龙汽车股份有限公司 | Assemblies of elements made of sheet metal including flanges |
| EP3350458B1 (en) * | 2015-09-18 | 2021-08-11 | PSA Automobiles SA | Assembly of sheet-metal elements comprising a rabbet |
| CN108078521A (en) * | 2017-12-27 | 2018-05-29 | 泰州浩邦科技发展有限公司 | Commercial dish-washing machine upper outlet body |
| CN108078521B (en) * | 2017-12-27 | 2023-10-31 | 泰州浩邦科技发展有限公司 | Commercial dish washer upper cover body |
| CN111436877A (en) * | 2020-04-20 | 2020-07-24 | 上海明略人工智能(集团)有限公司 | Dish washing machine |
| CN111436877B (en) * | 2020-04-20 | 2022-10-18 | 上海明略人工智能(集团)有限公司 | Dish-washing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| ITTO20120166A1 (en) | 2013-08-25 |
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