EP3161396B1 - Improved sealing element for use in a refrigeration appliance - Google Patents

Improved sealing element for use in a refrigeration appliance Download PDF

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Publication number
EP3161396B1
EP3161396B1 EP14736703.1A EP14736703A EP3161396B1 EP 3161396 B1 EP3161396 B1 EP 3161396B1 EP 14736703 A EP14736703 A EP 14736703A EP 3161396 B1 EP3161396 B1 EP 3161396B1
Authority
EP
European Patent Office
Prior art keywords
guiding
refrigeration appliance
sealing element
outer case
intermediate region
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.)
Active
Application number
EP14736703.1A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3161396A1 (en
Inventor
Oktay Aygun
Deniz GUNDOGAN
Necat OZCELIK
Arda OZSU
Husamettin CELIK
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Arcelik AS
Original Assignee
Arcelik AS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Arcelik AS filed Critical Arcelik AS
Priority to PL14736703T priority Critical patent/PL3161396T3/pl
Publication of EP3161396A1 publication Critical patent/EP3161396A1/en
Application granted granted Critical
Publication of EP3161396B1 publication Critical patent/EP3161396B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25DREFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00General constructional features
    • F25D23/06Walls
    • F25D23/062Walls defining a cabinet
    • F25D23/064Walls defining a cabinet formed by moulding, e.g. moulding in situ

Definitions

  • the present invention relates to a sealing element for use in a refrigeration appliance, in particular in a domestic refrigerator.
  • the present invention more particularly relates to a sealing element for preventing leakage of foam material from an intermediate region between an inner case and an outer case of the refrigeration appliance to the outside during a curing process of the foam material.
  • the energy efficiency of a refrigeration appliance is influenced by several factors.
  • One important factor is the thermal insulation of the refrigeration appliance.
  • Several techniques are known for thermally insulating a refrigeration appliance. In a commonly known technique, liquid foam material, in particular polyurethane is filled into the intermediate region between the outer case and the inner case of the refrigeration appliance. After completion of the curing process the foam material provides a thermal insulation layer.
  • GB 1 214 548 discloses a valve in a vertical wall of a refrigerator through which insulation foam is injected.
  • the valve comprises an annular valve seat and a movable hemispherical valve member.
  • JPS6267181 discloses a pivotable flap in a horizontal wall of a refrigerator through which insulation material is injected.
  • the air inside the intermediate region is generally allowed to escape to the outside through an air escape opening that is typically formed into the outer case.
  • the air escape opening is usually at the highest location of the outer case in a state when the refrigeration appliance is positioned for filling the liquid foam material into the intermediate region.
  • an air permeable material such as a sponge is generally placed in front of the air escape opening.
  • the sponge is usually fixed to the air escape opening by utilizing adhesives. The sponge allows the air to escape to the outside while keeping the curing foam material inside the intermediate region.
  • KR20040075832 (A ) discloses a refrigerator.
  • This conventional refrigerator has an inner case, an outer case and air escape openings for allowing air to escape to an outside during a curing process of foam material which is to be filled between the inner case and the outer case.
  • sponges are mounted in front of the air escape openings to prevent leakage of foam material.
  • a drawback of the above conventional technique is that from time to time the foam material leaks during a curing process through the air escape opening while pressing the sponge and the adhesive also to the outside. Such a leakage is identifiable from the outside and gives the customer the impression that the refrigeration appliance is of an inferior quality or has become junk. In these occurrences, the consumer satisfaction may easily degrade. Also the production errors and the production waste increases the overall costs.
  • An objective of the present invention is to provide a refrigeration appliance having a sealing element which overcomes the aforementioned drawbacks of the prior art in a cost effective way and which enables an improved sealing.
  • Another objective of the present invention is to provide a method of manufacturing a refrigeration appliance using the sealing element which overcomes the aforementioned drawbacks of the prior art in a cost effective way and which enables an easy and reliable assembly.
  • the refrigeration appliance of the present invention comprises one or more than one guiding means for movably arranging one or more than one sealing element of the present invention respectively into the intermediate region between the outer case and the inner case.
  • the refrigeration appliance of the present invention comprises a sealing element with an air impermeable and resilient body which has a sealing skirt and a counterpart guiding means for cooperating with the corresponding guiding means of the refrigeration appliance of the present invention.
  • the body is mountable via its counterpart guiding means into the intermediate region so as to float upwards from a first position up to a second position under the pushing action of the curing foam material during the curing process.
  • an air gap which fluidly connects the intermediate region with the corresponding air escape opening is left above the sealing skirt of the body whereas at the second position, the sealing skirt is pushed by the curing foam material to cover the corresponding air escape opening so as to leak-tightly seal the intermediate region from the outside against leakage of curing foam material.
  • the first position is slightly lower than the second position such that a sufficient air gap is secured above the body to vent the air inside the intermediate region through the air escape opening until the body is eventually pushed up to the second position under the pushing action of the curing foam material.
  • each guiding means and each counterpart guiding means are provided in form of a guiding rail and a guiding notch respectively.
  • the guiding rail and the guiding notch are not used, however, the body is arranged in a corresponding guiding channel.
  • the guiding rail and the corresponding guiding notch have mutually conforming s-shaped forms such that the body is secured in a transverse direction, but upwardly movable in the longitudinal (vertical) direction.
  • the refrigeration appliance has two air escape openings which are respectively formed in the upper rear corners at an interface between a rear cover and an upper cover of the outer case.
  • the body of each sealing element has a rectangular parallel piped shape and conforms to the shape of the corresponding upper rear corner.
  • each body has a locking abutment to prevent downwards movement of the sealing element.
  • the sealing skirt of each body has a suction cup which cooperates with a flat surface of the outer case to eventually fix under the pushing action of the curing foam material the sealing element to the second position at the end of the curing process.
  • the body of the sealing element is made of silicone rubber.
  • the body is non-porous and has an optimal resilience to elastically abut against the air escape opening while withstanding the pressure of the curing foam.
  • the sealing element of present invention in particular by virtue of the floating body, the curing foam material is reliably prevented from leaking to the outside. Thereby, the use of sponge materials and adhesives has been obviated and a cost effective sealing technique has been attained both in view of material and labor. In addition, production waste and errors due to leakage of foam material, sponge material, and adhesives have been eliminated.
  • the sealing element of present invention in particular by virtue of the air impermeable body, the moisture is prevented from diffusing into the refrigeration appliance through the air escape openings. Thereby, the cured foam material can be permanently maintained in a proper condition and the thermal insulation capacity thereof is prevented from degrading over time. With the present invention, the consumer satisfaction can be increased.
  • the sealing element (1,1a,1b) is suitable for use in a refrigeration appliance (2), in particular a domestic refrigerator (2) ( Fig. 1 to 4 ).
  • the refrigeration appliance (2) comprises an inner case (not shown) and an outer case (3).
  • the inner case forms one or more than one refrigeration compartment.
  • the outer case (3) encloses a rear surface of the inner case.
  • the refrigeration appliance (2) further comprises one or more than one air escape opening (4,4a,4b) for allowing air to escape to an outside during a curing process of foam material which is to be filled into an intermediate region (5) between the inner case and the outer case (3).
  • Each air escape opening (4,4a,4b) is formed into the outer case (3).
  • the refrigeration appliance (2) of the present invention comprises one or more than one guiding means (11) for movably arranging one or more than one corresponding sealing element (1,1a,1b) of the present invention into the intermediate region (5).
  • the refrigeration appliance (2) of the present invention further comprises one or more than one sealing element (1,1a,1b) of the present invention.
  • the sealing element (1,1a,1b) of the present invention comprises an air impermeable resilient body (6) which has a sealing skirt (7a,7b).
  • the body (6) further comprises a counterpart guiding means (12a,12b) for cooperating with the corresponding guiding means (11) of the refrigeration appliance (2).
  • the body (6) is movably mountable into the intermediate region (5) via its counterpart guiding means (12a, 12b) so as to float upwards from a first position (8) up to a second position (not shown) under the pushing action of the curing foam material during a curing process.
  • an air gap (9) which fluidly connects the intermediate region (5) with the corresponding air escape opening (4,4a,4b) is left above the sealing skirt (7a,7b) of the body (6).
  • the sealing skirt (7a,7b) is pushed by the curing foam material to firmly cover the corresponding air escape opening (4,4a,4b) so as to leak-tightly seal the intermediate region (5) from the outside.
  • the refrigeration appliance (2) comprises two air escape openings (4,4a,4b) which are formed at the left upper rear corner (10,10a) and the right upper rear corner (10,10b) of the outer case (3) respectively.
  • the refrigeration appliance (2) further comprises as guiding means (11) two guiding rails (11) which are formed on the outer case (3) in the vicinity of the left upper rear corner (10,10a) and the right upper rear corner (10,10b) respectively.
  • each body (6) comprises as counterpart guiding means (12a,12b) a guiding notch (12a,12b) which is slidably retainable by the corresponding guiding rail (11) so as to allow moving from the first position (8) to the second position.
  • each body (6) has a shape which conforms the shape of the corresponding upper rear corner (10,10a,10b).
  • the body (6) has a rectangular parallelepiped shape which conforms the shape of the corresponding upper rear corner (10,10a,10b).
  • the sealing skirt (7a,7b) is formed along one or more than one edge (13) of the body (6).
  • the guiding notch (12a,12b) is formed into a lateral surface (14) of the body (6).
  • each guiding rail (11) has an s-shaped form.
  • the sealing element (1,1a,1b) also has an s-shaped form which matches the s-shaped form of the corresponding guiding rail (11).
  • the guiding notch (12a,12b) has a locking abutment (15a,15b) which blocks at the first position (8) downwards movement of the body (6) along the corresponding guiding rail (11) ( Fig. 1 to 4 ).
  • each guiding rail (11) has an upper end (not shown) which abuts at the first position (8) against the locking abutment (15a,15b) of the corresponding sealing element (1,1a,1b).
  • the outer case (3) has a flat surface (16) in the vicinity of each air escape opening (4,4a,4b).
  • the sealing element (1,1a,1b) comprises a suction cup (17a,17b) which gets into contact at the second position with the corresponding flat surface (16).
  • the body (6) of the sealing element (1,1a,1b) is made from silicone.
  • the refrigeration appliance (2) comprises two air escape openings (4,4a,4b) which are formed at the left upper rear corner (10,10a) and the right upper rear corner (10,10b) of the outer case (3) respectively.
  • the refrigeration appliance (2) further comprises as guiding means (11) two guiding rails (11) which are formed on the outer case (3) in the vicinity of the left upper rear corner (10,10a) and the right upper rear corner (10,10b) respectively.
  • two sealing elements (1,1a,1b), in particular the left handed and the right handed versions are slidably retained by the guiding rails (11) respectively by means of their guiding notches (12a,12b) so as to float upwards from the first position (8) up to a second position under the pushing action of the curing foam material to be filled into the intermediate region (5).
  • the outer case (3) comprises an upper cover (18), two opposing lateral covers (19) and a rear cover (20).
  • the two air escape openings (4,4a,4b) are formed at an interface between the upper cover (18) and the rear cover (20).
  • each guiding rail (11) is formed on the rear cover (20) ( Fig. 1 to 4 ). In this embodiment, each guiding rail (11) is accessible for manually attaching the corresponding sealing element (1,1a,1b) when the upper cover (18) is in a detached state (not shown).
  • the present invention also provides a method of manufacturing the refrigeration appliance (2).
  • one or more than one sealing element (1,1a,1b) is movably arranged into the intermediate region (5) via the guiding means (11) and counterpart guiding means (12a,12b). Then the upper cover (18) is attached. Then, foam material is filled into the intermediate region (5).
  • sealing element (1,1a,1b) of present invention With the sealing element (1,1a,1b) of present invention, a cost effective sealing technique both in view of material and labor has been attained in which the use of sponge materials and adhesives has been obviated. Also production errors and production wastes due to leakage of foam material, sponge material, and adhesives have been eliminated.
  • the sealing element (1,1a,1b) of the present invention in particular by virtue of the floating body (6), the venting of the air through the air escape openings (4,4a,4b) has been expedited and the curing foam material is prevented from leaking to the outside.
  • the sealing element (1,1a,1b) of present invention in particular by virtue of the air impermeable body (6), the moisture is prevented from diffusing into the refrigeration appliance (2) through the air escape openings (4,4a,4b) and a thermal insulation capacity of the cured foam material is prevented from degrading over time.
  • the consumer satisfaction can be increased.

Landscapes

  • 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)
EP14736703.1A 2014-06-30 2014-06-30 Improved sealing element for use in a refrigeration appliance Active EP3161396B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL14736703T PL3161396T3 (pl) 2014-06-30 2014-06-30 Ulepszony element uszczelniający do zastosowania w urządzeniu chłodzącym

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2014/063831 WO2016000737A1 (en) 2014-06-30 2014-06-30 Improved sealing element for use in a refrigeration appliance

Publications (2)

Publication Number Publication Date
EP3161396A1 EP3161396A1 (en) 2017-05-03
EP3161396B1 true EP3161396B1 (en) 2018-03-14

Family

ID=51162744

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14736703.1A Active EP3161396B1 (en) 2014-06-30 2014-06-30 Improved sealing element for use in a refrigeration appliance

Country Status (4)

Country Link
EP (1) EP3161396B1 (pl)
PL (1) PL3161396T3 (pl)
TR (1) TR201808195T4 (pl)
WO (1) WO2016000737A1 (pl)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3513875A (en) * 1968-03-14 1970-05-26 Illinois Tool Works Closure device
JPS6267181U (pl) * 1985-10-17 1987-04-25
KR100624754B1 (ko) 2004-08-10 2006-09-19 주식회사 고산 냉동/냉장고용 리어패널의 누액 방지방법

Also Published As

Publication number Publication date
PL3161396T3 (pl) 2018-08-31
EP3161396A1 (en) 2017-05-03
TR201808195T4 (tr) 2018-07-23
WO2016000737A1 (en) 2016-01-07

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