Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
  • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
  • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
  • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
  • F25D17/042—Air treating means within refrigerated spaces
  • F25D17/047—Pressure equalising devices
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
  • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
  • F25D23/00—General constructional features
  • F25D23/08—Parts formed wholly or mainly of plastics materials
  • F25D23/082—Strips
  • F25D23/087—Sealing strips

Definitions

• the present invention relates to a refrigeration device such as a refrigerator or freezer with a pressure equalization opening, which serves to prevent the formation of a negative pressure in the interior of the refrigerator.
• a refrigeration device with an air passage which allows the access of outside air to the interior with the door closed.
• the passage of air of this known refrigeration device is provided to prevent dehydration of stored therein refrigerated goods such as the corks of wine bottles.
• a side effect of the passage which is not considered in DE 102 33 216 A1 is that it prevents the formation of a negative pressure in the interior space after closing the door.
• the air passage of this known refrigeration device is designed as a bore extending through a wall the body or the door extends. Such a passage requires considerable manufacturing effort, since its walls must connect tightly to an inner and outer skin of the body or the door, to prevent that when filling the walls with insulating material that emerges from the passage.
• the possibility is called to accommodate the passage in the magnetic sealing tape.
• conventional magnetic sealing tapes are not readily adapted to form an opening therein.
• An object of the present invention is to provide a refrigeration device with a pressure equalization opening, which effectively prevents the formation of a negative pressure after door closing with minimal manufacturing effort.
• the object is achieved by having in a refrigerator with a body and a door which surround a cooled interior and facing each other, a gap filled by a seal defining frame surfaces, in at least one of the frame surfaces a seal bridging passage is recessed, over the interior communicates with the environment.
• the passage of the invention provides a connection extending between the gasket and the body or between the gasket and the door. Since no through hole is formed, the problem of sealing does not occur.
• the passage can be mitgeformt without additional effort when forming the frame surfaces of the door or carcass, in particular by deep drawing.
• the passage may be in the form of a trench, a gutter or a plurality of interconnected trench or gutter sections.
• the passage bridges the seal in an odd path.
• Such an odd path may also be substantially longer than the width of the bridged seal, so that there is a large surface area available in the passage upon which moisture from the inhaled air is deposited can. This reduces the likelihood that precipitated moisture will fill the cross-section of the passage and obstruct the flow of air in the passage.
• the passage comprises at least one section running in the longitudinal direction of the seal
• the passage may be formed on the same frame surface as the groove; in this case, the groove extends across the passage, and at most the two ends of the passage are visible on different sides of the seal.
• this rib is preferably locally interrupted to form the passage.
• At least one end of the passageway is further disposed at a corner of the frame surface, as the corners are generally the warmest portions of the refrigerator housing, and therefore the tendency to condense in the passageway is relatively low.
• the passage is preferably heatable. Heating can be done at no extra cost by a frame heating, which is provided in many refrigerators to prevent dew formation on adjacent to the seal outer surfaces of the body or the door.
• the passage is conveniently formed on the frame surface of the body at the level of the break.
• the door pressure compensation valve may be provided which allows inflow of air from the environment into the interior, but blocks outflow of air from the interior. Since such a valve prevents an uncontrolled exchange of air between the interior and the environment and thus an undesirable heat input into the housing, it can, without significantly increase the heat flow to the interior, have a much larger free cross-section than the passage and thus a faster pressure equalization than this allow door closing. It has been found that such pressure compensating valves in continuous operation tend to freeze and that the presence of the passage eliminates this tendency to freeze.
• Fig. 1 is a schematic perspective view of a refrigerator according to a first embodiment of the invention
• FIG. 2 shows a partial section through a wall of the body of the refrigeration appliance along the plane designated by II in FIG. 1;
• FIG. 2a is a detail view of a corner of the body of the refrigerator according to a variant of the first embodiment.
• FIG. 4 shows a lower corner of the inner wall of a refrigerator door according to a second
• FIG. 5 shows a section through the inner wall and the sealing profile anchored therein along the plane designated by V in FIG. 4;
• Fig. 6 is a section along the plane designated by VI of Fig. 4;
• Figure 7 is a perspective view of a corner of the inner wall of a refrigerator door and a sealing profile received therein according to a third embodiment of the invention.
• FIG. 8 shows a section along the plane designated VIII in FIG. 7.
• FIG. 1 is a schematic perspective view of a refrigerator with a body 1 and a door 2 hinged thereto, which surround a cooled interior 3.
• the walls of the body and the door in a conventional manner each have a solid outer skin and a solid inner skin, which define a space filled with insulating foam material gap.
• the inner skin of the walls and a frame surface 5 surrounding the front opening of the body 1 are thermoformed in one piece from a plastic sheet.
• a magnetic seal 4 is anchored in a conventional manner.
• a passage in the form of a trench 8 is recessed into the front frame 5 so that, when the door 2 is closed, one end of the trench 8 on the outside and the other on the inside of the seal 4 come to rest.
• FIG. 2 shows a section along the plane designated by II in FIG. 1 through the trench 8 and its surroundings.
• two sections 15, 15 'of a pipeline can be seen, which acts as a frame heater.
• the section 15 conveys hot, compressed refrigerant from a compressor, not shown, accommodated in a rear portion of the body 1 and buckles adjacent to the trench 8 to extend along a lower horizontal portion of the frame surface 5.
• the pipeline runs along the entire frame surface 5 and finally from above, as a section 15 ', again at the trench 8, where it kinks in the depth direction of the body 1 and further extends to an attached to the rear wall of the body 1 outside condenser.
• the frame heater thus extends annularly along the entire frame surface 5, with the exception of a gap between the two segments 15, 15 ', in which the trench 8 engages.
• the trench 8 obstructs thus not a laying of the frame heating in direct contact with the frame surface. 5
• the trench 8 shown in FIGS. 1 and 2 bridges the magnetic seal 4 in a straight line and at right angles.
• the trench 8 may form the only passage between the interior 3 and the environment of the refrigerator, which supports a pressure equalization between the interior 3 and the environment after closing the door 2.
• a pressure compensating valve is additionally provided for this purpose, for example in an opening 6 formed in the lower region of the door.
• FIG. 3 shows a perspective longitudinal section through the pressure compensating valve 7 ,
• thermoformed plastic inner wall 10 Between an outer panel 9 of the door 2 and a thermoformed plastic inner wall 10 extends a foam-tight on the inner wall 10 fixed by a bayonet sleeve 1. 1 A held inside the sleeve 1 1 under bending stress membrane 12 has on the walls of the sleeve 1 1 tightly fitting edges and is held by a transversely through the interior of the sleeve 1 1 extending intermediate wall 13 and a cap part 14 in position.
• the trench 8 is provided40 and contains no membrane obstructing the air flow, in such a case the air flow into the interior space 3 is exclusively via the trench 8.
• the valve 7 therefore can not freeze and the trench 8 is due to its close proximity to frame heating 41 protected against freezing.
• FIG. 4 is a perspective view of a lower corner of the inner wall 10 of the door 2 and the magnetic seal 4 fixed to the inner wall 10 according to a second embodiment of the invention.
• this second embodiment instead of the trench 8 on the frame surface 5 of the body 1, a corresponding trench 8 'is formed on the frame surface of the inner wall 10, two ends of which can be seen in FIG.
• two projections 17, 18 are formed, one of which, 17, barbed.
• the projections 17, 18 engage in a groove 19 of the inner wall 10, which is divided by an extending in the longitudinal direction of the groove 19 rib 20 in an inner and an outer portion 21, 22.
• the barbs of the projection 17 are latched to undercuts of the inner portion 21.
• a in the width direction of the magnetic seal 4 extending, in the section 22 in bulging transverse wall 23 is held by the latch in a bending-loaded position in which it keeps the projection 18 pressed into the outer portion 22 of the groove 19.
• a thin, flexible wall portion 24 of the magnetic seal 4 is bent inwardly by an edge of the outer portion 22, so that the wall portion 24 is substantially close to this edge.
• a lip 25 is formed, which is pressed by the latching of the projection 17 tightly against an adjacent to the inner portion 21 shoulder 26 of the inner wall 10.
• the wall portion 24, the lip 25 and the barbs of the projection 17 form a plurality of sealing lines between the inner wall 10 and the magnetic seal 4th However, these sealing lines do not extend over the entire length of the magnetic seal 4, but they are interrupted at the corner of the door 2 shown by the trench 8 '.
• the trench 8 ' is formed by a recess on the inner wall 10 is tightened at the location of the meeting of a horizontal and a vertical portion of the groove 19.
• Fig. 5 which shows a section through the inner wall 10 and the magnetic seal 4 along the plane designated V in Fig. 4, an outer contour 28 of this recess is visible.
• Fig. 6 shows a section along the inclined at 45 ° to the horizontal, in Fig. 4 denoted by VI cutting plane.
• the section plane runs along the trench 8 ', and it can be seen that along this section plane neither the wall section 24 nor the barbs or the lip 25 touch the inner wall 10.
• This trench 8 ' is provided between the magnetic seal 4 and the door 2 extending passage.
• the trench 8 allows pressure equalization between inside and outside, bypassing the pressure compensation valve 7 possible, although the often changing its direction course of the trench 8' in the manner of a labyrinth seal limits the exchange of air between inside and outside to the extent necessary for pressure equalization. Since the trench 8 'is heated on the one hand by the front side 5 and on the other hand air that has passed through the trench 8' before reaching the interior 3 still has to pass a temperature-compensating gap 29 between the inner wall 10 and the frame surface 5, there is no risk of clogging of the trench 8 'due to excessive condensation.
• FIG. 7 is like Fig. 4 is a perspective view of a corner of the inner wall 10, wherein the groove 19 of the inner wall 10 is shown equipped only on a part of its length with the magnetic seal 4 to one in the sections 21, 22 of the groove 19th from each other separating rib 20 formed cutout 30 can show.
• the cross sections of the groove 19 and the magnetic seal 4 are the same as shown in Fig. 5.
• the passage 8 ' is interrupted by the rib 20 in the sectional plane of this figure.
• FIG. 8 which is analogous to FIG. 6
• the cutout 30 even at the corner shown in Figure 7 diametrically opposite corner of the door 2 may be formed.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Physics & Mathematics (AREA)
• Mechanical Engineering (AREA)
• Thermal Sciences (AREA)
• General Engineering & Computer Science (AREA)
• Refrigerator Housings (AREA)
• Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
• Sampling And Sample Adjustment (AREA)

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• 2006
  • 2006-08-29 DE DE202006013229U patent/DE202006013229U1/de not_active Expired - Lifetime
  • 2006-09-01 US US12/310,414 patent/US20090320515A1/en not_active Abandoned
  • 2006-09-01 EP EP06793153A patent/EP2059736A1/de not_active Withdrawn
  • 2006-09-01 WO PCT/EP2006/065934 patent/WO2008025378A1/de active Application Filing
  • 2006-09-01 RU RU2009106134/21A patent/RU2402723C1/ru not_active IP Right Cessation
• 2007
  • 2007-08-01 WO PCT/EP2007/057979 patent/WO2008025637A2/de active Application Filing
  • 2007-08-01 AT AT07788144T patent/ATE453844T1/de active
  • 2007-08-01 EP EP07788144A patent/EP2059737B1/de active Active
  • 2007-08-01 ES ES07788144T patent/ES2336965T3/es active Active
  • 2007-08-01 CN CN2007800320794A patent/CN101512265B/zh not_active Expired - Fee Related
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  • 2007-08-01 RU RU2009107850/21A patent/RU2411427C2/ru not_active IP Right Cessation
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