The present invention relates to a refrigerator, in particular a domestic refrigerator, with a dispenser for ice and/or water.
Ice/water dispensers traditionally contain a dispenser housing, which is flush-mounted behind an opening in the outer shell in a heat-insulating wall of the refrigerator, usually a door, and delimits a dispenser recess in which a receptacle can be placed in order to be filled with ice and/or liquid. Passages, via which ice and/or liquid pass into the dispenser housing, are located in an upper area of the dispenser housing.
To protect fittings such as valves or flaps, which are accommodated in the upper area of the dispenser housing to control the delivery of ice or liquid and/or to prevent unnecessary air circulation between the dispenser recess and the interior of the refrigerator via the passages, it is expedient to cover this upper area. T his may be done expediently by mounting an operating component at this location, via which the functioning of the dispenser can be controlled.
The minimum number of buttons or other operating elements, which are required on the operating component in order to control the functions of the dispenser, is small and easily accommodated on an operating element, the height of which is less than that of the fittings of the upper area, and in particular less than the height of a flap on the output of an ice chute.
If the height of the operating element varies in different models of refrigerators, yet at the same time, regardless of the height of the operating element, it shall be possible to place a receptacle just below an outlet such as the output of the ice chute or the end of a water conduit, in order to limit the dropping height of the ice or water and minimize the risk of splattering, then different versions of the dispenser housing are required depending on the height of the operating element. The manufacture of several refrigerator models, which vary in the appearance of their dispenser, is thus expensive.
An object of the invention is to create a refrigerator with a dispenser, which enables different refrigerator models to be produced cost-effectively.
The object is achieved in that, in a refrigerator with a dispenser for ice and/or liquid, in which a dispenser housing covers an opening in an outer shell of the refrigerator and delimits a dispenser recess that extends upward beyond an upper edge of the opening, the dispenser housing is assembled from at least one main part, which extends from a lower edge of the opening over a rear wall to a front edge of a ceiling of the dispenser housing, and a filling part, which extends behind the outer shell from the front edge to an upper edge of the opening.
Since the filling part is provided with varying heights in different versions, a variable height of the operating component can be compensated so that the distance between a lower edge of the opening and the operating component or between the lower edge of the opening and an outlet of the dispenser can remain the same. Therefore only one identical model of main part, which can be produced cost-effectively in large quantities, is required for different models. The different models of filling components entail only relatively low costs due to their smaller dimensions and simpler construction.
The operating component may be mountable in the dispenser housing adjacent to an upper edge of the opening.
The filling part may contain a wall panel, which delimits the dispenser recess and is separated from the outer shell by a gap.
The filling part may contain ridges, which extend to the outer shell. These ridges can be used for various purposes. Ridges on the edges of the wall panel can be used for fixing the filling part on the main part or delimiting the gap from the dispenser recess; ridges may be provided away from the edges in order to attenuate vibrations in the outer shell by contact therewith or to control the penetration of foam into the gap when the housing of the refrigerator is filled with foam.
To prevent the outer shell sounding hollow when someone knocks on it at the level of the filling part, possibly causing a user to suspect an absence of insulation, the gap may be at least partially filled with expanded foam.
To ensure that the foam penetrating into the gap from outside when foam is expanded is not prevented from advancing by counter pressure from air enclosed therein, the filling part may have a ventilation passage leading into the dispenser recess.
Such a ventilation passage should be sufficiently long and narrow so that, as soon as the foam has reached it and starts to be forced into it, the foam is held for long enough until it is set hard and solidified. Such a passage may expediently be located in a mandrel, which projects into the gap from the wall panel.
The sidewalls of the main part may have a cutout in an upper front region, so that an upper region is not in direct contact with the front panel, but expanding foam can reach the gap through the cutouts.
Since according to this design, air can escape upwards from the gap while foam is penetrating into it from the sides, the ventilation passage can be dispensed with.
Further, visibly inhomogeneous deformation of the outer shell by pressure from the expanded foam can be minimized since a pressure gradient between foam in the gap and foam located around the dispenser is reduced. This is particularly important if the outer shell is made from a specular reflecting material, such as unpainted stainless steel.
In order to reduce the pressure gradient, it is further expedient if the gap is flared towards the edges, so as to facilitate propagation of high pressure of the foam surrounding the dispenser into the gap. To this effect, the outer shell being substantially flat, the wall panel should have a convex side facing the gap.
The wall panel can expediently carry holding brackets for attaching it to the sidewalls of the main part.
At least one of the aforementioned ridges may extend over the entire width of the wall panel and divide the gap into an upper, open-ended section and a lower section bounded on all sides.
When the upper section is filled with foam, the ridge can form an initial seal against the penetration of the foam. It does not have to be completely foam-tight, since the lower section of the gap can be used as a collection chamber for foam if necessary; the ridge only needs to delay the foam for long enough so that it hardens before the collection chamber is full.
A prefabricated insulation body, e.g. one that has been expanded in a hollow mold or customized from expanded material, may also be inserted into the gap, whether in order to be used as a seal against penetrating foam or merely to attenuate vibrations in it caused by contact with the outer shell.
To establish a foam-tight joint between the outer shell and the filling part, an edge strip of the outer shell angled on the upper edge of the opening can engage into a groove of the filling part.
Similarly, an edge strip of the outer shell angled on a lateral or lower edge of the opening can engage into a groove of the main part.
A foam-tight joint between main part and filling part can be established by means of a tongue-and-groove joint.
The insertion direction of the tongue-and-groove joint is preferably oriented perpendicular to the outer shell. Thus the groove of the main part, which accommodates the flange of the outer shell, and the section of the tongue-and-groove joint, which is located on the main part, is molded with an identical molding tool and removed from the mold in the same movement.
The section of the tongue-and-groove joint, which is located on the main part, is an upper area of a linear groove, the lower area of which accommodates the edge strip of the outer shell. Alternatively, one of the tongue and the groove of the tongue-and-groove joint can be formed on a side of the wall panel that faces away from the outer shell, so as to mate with other of the tongue and the groove extending along the edge of a sidewall cutout of the main portion.
Other features and advantages of the invention will emerge from the description which follows of exemplary embodiments, with reference to the attached diagrams.
Although the invention is illustrated and described herein as embodied in a refrigerator with a dispenser, it is nevertheless not intended to be limited to the details shown, since various modifications and structural changes may be made therein without departing from the spirit of the invention and within the scope and range of equivalents of the claims.
The construction and method of operation of the invention, however, together with additional objects and advantages thereof will be best understood from the following description of specific embodiments when read in connection with the accompanying drawings.
Referring now to the figures of the drawings in detail and first, particularly to
A front edge 18 of a ceiling 19 of the main part 11 is recessed against this plane. It is likewise provided with a groove 20 that is open toward the front. A passage is made in a vertex 21 of the ceiling 19, through which, in the fully assembled appliance, a water conduit is extended to an outlet in the upper area of the dispenser housing 8, above the filler tube 47. In an inclined wall section between the ceiling 19 and a rear wall 22, a hole 23 can be seen, which will form the outlet of an ice chute, as well as projections 24 for fastening a pivoting flap for closing the hole 23 when it is not in use.
The two filling parts 12, 13 are identical in terms of their construction; they differ only in the height at which they are located. A ridge 26, 27, 28 protrudes respectively along the lateral edges and the lower edge of a side of a vertical wall panel 25 facing toward the observer; a further ridge 29 parallel to the lower edge links lateral ridges 26, 27. As can be seen more clearly in
The ridges 26, 27 are widened into a flange 32 on their edge facing toward the observer, from the rear side of which a tongue 33 in turn protrudes.
The operating component 9 is installed directly below the ridge 28 and closes the opening 7 above an edge 40.
The pressure of the foam may cause the outer shell 6 to be pushed away from the ridge 29 slightly. To prevent the foam from penetrating over the ridge 29 and into the lower section 39, the latter can be filled in advance by insertion of a preformed insulation body 44, e.g. made from expanded polystyrene; it may however already be sufficient if the gap between the ridge 29 and the outer shell 6 is narrow enough to inhibit the penetration of the foam so that the quantity of foam passing through to constrict the gap is too small to fill the lower section 39.
A cutout 148 is formed in an upper front corner of each sidewall 115, so that the flanges 149 and grooves 117 do not extend up to the ceiling 119 but only along a lower portion of the sidewalls 115.
The filling part 112 contains an upright wall panel 125. The wall panel 125 can be cylindrically curved, with a convex side facing the outer shell 6, so that a gap 137 (see
The gap 137 is open at both sides and at the top, along front edge 118. At its bottom, the gap 137 is delimited by at least one web or ridge 128, 129 projecting from the wall panel 125 and resting at the inner side of the outer shell 6. A groove 130 for accommodating the edge strip 35 formed at an upper edge of opening 7 is provided in ridge 128. As in the first embodiment, a preformed insulation body 44 can be accommodated in the cavity delimited between the two horizontally extending ridges 128, 129 and the sidewalls 115.
The vertical section through the filler part 112 and its vicinity shown in
A foam-tight tongue- and groove connection between the filler part 112 and the main part 111 contains a groove 150 in the front edge of each sidewall 115, facing the cutout 148, a web 151 extending along lateral and upper edges of the wall panel 125 and facing away from the outer shell 6, and a plurality of holding brackets 152. In a lower right corner of
A rear wall 155 of the door 3 has portions 156 parallel to the outer shell 6 and portions 157 parallel to the sidewalls 115. When during assembly of the door 3 foam is injected into the cavity between the outer shell 6 and the rear wall 155, and is allowed to expand therein, it will enter the gap 137 from both sides, through the cutouts 148, and air can escape upwards from the gap 137. While the foam is still expanding, and air is escaping freely from the cavity through some vent hole, not shown, the pressure of the foam is close to atmospheric pressure. When the foam has filled the cavity but is not allowed to escape through the vent hole, pressure of the foam rises. In order to prevent bloating of the door 3, the door 3 is constrained in a mold while the foam is expanding and for some time afterwards. Waiting for the foam to cure completely would take several hours, therefore the door is released from the mold before that, and the mold is re-used before the foam is completely cured and set. A remaining tendency of the foam to expand and to exercise pressure on the outer shell 6 is largest in the regions adjacent to the sidewalls 115, the ceiling 119 and the floor plate 116 since the thickness of the foam layer measured perpendicular to outer shell 6 is highest there. Since the foam is not yet completely cured then, foam can be displaced, and the pressure may spread, into the gap 137. It was observed that in the first embodiment, the fact that the gap 37 is shielded laterally by the sidewalls 15, the pressure may not spread sufficiently into the gap 37, so that the camber of the outer shell in front of the gap 37 may be different from that in its vicinity. Such an inhomogeneity may become visible, in particular if the outer shell is reflecting, by distorting specular images of objects. In the second embodiment, the fact that the gap 137 is wide open to both sides via the cutouts 148 favors spreading of the pressure into the gap 137, thus avoiding a distortion of specular images if the outer shell 6 has a glossy, reflecting surface.
The following is a list of reference numerals used in the above description of the invention with reference to the drawing figures:
Number | Date | Country | Kind |
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10 2016 201 782.9 | Feb 2016 | DE | national |
This application is a continuation-in-part of patent application Ser. No. 15/417,297, filed Jan. 27, 2017; this application also claims the priority, under 35 U.S.C. § 119, of German patent application No. DE 10 2016 201 782, filed Feb. 5, 2016; the prior applications are herewith incorporated by reference in their entirety.
Number | Name | Date | Kind |
---|---|---|---|
4311351 | Chang | Jan 1982 | A |
4955675 | Donaghy | Sep 1990 | A |
7340915 | Kwon | Mar 2008 | B2 |
20090071184 | Buchstab | Mar 2009 | A1 |
20090314025 | Kummel | Dec 2009 | A1 |
20100200621 | Buchstab | Aug 2010 | A1 |
20120104026 | Hortin | May 2012 | A1 |
20180024962 | Lee | Jan 2018 | A1 |
Number | Date | Country |
---|---|---|
102012216375 | Mar 2014 | DE |
2344820 | Jul 2011 | EP |
2344820 | Aug 2012 | EP |
19980083723 | Dec 1998 | KR |
Entry |
---|
Precast/Prestressed Concrete Institute, PCI Bridge Design Manual, Nov. 2011, Appendix B—13-14, https://www.pci.org/PCI_Docs/Design_Resources/Transportation_Resources/Double%20Tee%20Bridge%20Beams.pdf (Year: 2011). |
Translated_Peter (Year: 2014). |
Translated_Pak (Year: 1998). |
Translated_Yufa (Year: 2012). |
Number | Date | Country | |
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20200165116 A1 | May 2020 | US |
Number | Date | Country | |
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Parent | 15417297 | Jan 2017 | US |
Child | 16778881 | US |