EP2375202A1 - Verfahren zur Herstellung einer Kühlkammer und Kühlgerät mit entsprechender Kühlkammer - Google Patents

Verfahren zur Herstellung einer Kühlkammer und Kühlgerät mit entsprechender Kühlkammer Download PDF

Info

Publication number: EP2375202A1
Authority: EP; European Patent Office
Prior art keywords: making; enclosure; hole; reference means; visual reference
Prior art date: 2010-04-08
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.): Granted

Application number

EP11161376A

Other languages

English (en)

French (fr)

Other versions

EP2375202B1 (de

Inventor

Marco Cimarelli

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.)

Whirlpool EMEA SpA

Original Assignee

Indesit Co SpA

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.)

2010-04-08

Filing date

2011-04-06

Publication date

2011-10-12

2011-04-06 Application filed by Indesit Co SpA filed Critical Indesit Co SpA

2011-10-12 Publication of EP2375202A1 publication Critical patent/EP2375202A1/de

2018-07-25 Application granted granted Critical

2018-07-25 Publication of EP2375202B1 publication Critical patent/EP2375202B1/de

Status Not-in-force legal-status Critical Current

2031-04-06 Anticipated expiration legal-status Critical

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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
- F25D23/00—General constructional features
- F25D23/06—Walls
- F25D23/065—Details
- F25D23/066—Liners

Definitions

This invention relates to a method for making a refrigerating cell and a device for refrigerating and storing food products and comprising the refrigerating cell.
Refrigerating cells normally comprise a thermoformed enclosure made by die forming and delimiting a zone for storing food products.
a plurality of openings are then made in the enclosure to allow connection of refrigerated air conduits (for example in the case of a no-frost refrigerator) or for the passage of electrical wiring.
These openings are holes which are usually made in the die formed enclosure by numerical control machines.
the enclosure can then be sent to the assembly line.
some of the enclosures are unexpectedly found not to have the openings in the required number or at the required positions (this may be due to errors positioning an enclosure relative to the numerical control machine or to a human error during programming of the numerical control machine). This may make it impossible to assemble the enclosure or create problems connected with the quality of the end product.
the technical purpose which forms the basis of this invention is to propose a method for making a refrigerating cell and a refrigerating device for refrigerating and storing food products and comprising the refrigerating cell that overcome the above mentioned disadvantages of the prior art.
this invention has for an aim to provide a method and a device which can speed up assembly in the production line.
Another aim of the invention is to propose method which can improve product quality.
a further aim of the invention is to propose a method which can facilitate the task of checking the work of a human operator.
a further aim of the invention is to propose a method which can facilitate the performance of some of the steps in the method for making the refrigerating cell.
the object of this invention is a method for making a refrigerating cell 1 comprising an enclosure 2 whose walls 20 delimit at least partially a zone 200 for storing food products.
the enclosure 2 has an opening 23 giving access to the zone 200 for storing food products, the opening 23 being designed to be closed by a door.
the enclosure 2 comprises a lower base 24 and a ceiling 25 opposite the lower base 24.
the enclosure 2 also comprises two side walls 26 and an end wall 27 which are interposed between the base 24 and the ceiling 25.
the end wall 27 is located opposite the opening 23 which is designed to be closed by a door.
refrigerating cell is meant a cell designed to refrigerate and store food products at any temperature.
the term "refrigerating cell” may denote both a cell designed to be used as a refrigerator compartment and a cell designed to be used as a freezer compartment.
the method comprises the step of making by die forming (preferably by thermoforming) the walls 20 of the enclosure 2.
the enclosure 2 is made of plastic material, preferably HIPS.
the method subsequently comprises a step of making at least one through hole 21 passing through at least one of the walls 20 of the enclosure 2.
the hole 21 might be made using a cutting tool such as a routing bit or a die and matrix (in the latter case, the process is known as blanking).
the step of die forming the walls 20 of the enclosure 2 comprises also making by die forming visual reference means 3 that identify a first zone 22 where the through hole 21 is made (during the step of making at least one through 21 which passes through at least one of the walls 20 of the enclosure 2).
the step of making the visual reference means 3 is thus simultaneous with the step of die forming the rest of the walls 20 of the enclosure 2.
the through hole 21 is not made simultaneously with the step of die forming the rest of the enclosure 2 since that would create problems extracting the enclosure 2 from the mould.
the step of making by die forming the visual reference means 3 comprises making the visual reference means 3 as a single part with the rest of the enclosure 2.
the step of making by die forming the visual reference means 3 comprises making by die forming one or more irregularities on the walls 20 of the enclosure 2.
the step of making by die forming the visual reference means 3 comprises the step of making by die forming at least one protrusion 30 or one groove forming part of the visual reference means 3 (meaning that the above mentioned irregularities may comprise the protrusions 30 or the grooves).
the step of making at least one hole 21 is performed by numerical control machines or manually.
the step of making at least one through hole 21 is preceded by the step of positioning a cutting tool relative to the first zone 22 with the aid of the visual reference means 3.
the step of making at least one through hole 21 involves locating the hole 21 at a minimum distance of less than 1 millimetre (advantageously at a minimum distance of between 0.4 and 0.6 millimetres and preferably at a minimum distance of between 0.45 and 0.55 millimetres) from each single visual reference 3a, 3b, 3c, 3d forming part of the visual reference means 3.
the step of making by die forming the visual reference means 3 comprises making the visual reference means 3 at least on the end wall 27.
the step of making by die forming the visual reference means 3 comprises/coincides with the step of making by die forming at least four protrusions 30 or grooves forming part of the visual reference means 3 (alternatively, at least two protrusions 30 or grooves might be made by die forming - this embodiment not being illustrated).
the step of making by die forming the visual reference means 3 coincides with the step of making by die forming a protrusion 30 or groove which surrounds the entire first zone. In the latter case, the protrusion 30 or groove is advantageously made on the end wall 27.
the step of making by die forming the visual reference means 3 comprises making at least one, advantageously a plurality, preferably all the protrusions 30 or grooves, with two intersecting sections that meet at a common zone (this makes it easier for the user to identify the first zone 22).
the method comprises the step of selecting the enclosure 2 where the through hole is at least partially outside the first zone 22 identified by the visual reference means 3.
the method comprises examining the enclosure 2 to decide whether to reject it, use it without further removal of material or subject it to further removal of material.
the enclosure 2 might be rejected if the first zone 22 is well outside the zone delimited by the visual reference means 3.
the enclosure 2 is reused as far as possible, although further machining is sometimes necessary. Thanks to the invention, the user immediately notices any defects in the enclosure 2. This may have the added advantage that defective enclosures 2 are not sent to the assembly line and thus do not slow down the assembly line.
the step of making the at least one through hole 21 is carried out at a first machining centre.
the method comprises the steps of:
the step of making at least one through hole 21 passing through at least one of the walls 20 of the enclosure 2 is carried out by a numerical control machine after positioning the enclosure 2 relative to the machine.
This invention also has for an object a refrigerating device for refrigerating and storing food products and comprising a refrigerating cell 1 comprising an enclosure 2 in turn comprising walls 20 which identify a zone 200 for storing food products.
the enclosure 2 is made of plastic material such as, for example, HIPS (high impact polystyrene). At least one of the walls 20 has a hole 21 which goes right through the thickness of it.
the enclosure 2 has an opening 23 giving access to the zone 200 for storing food products; the opening 23 being closable by a door forming part of the device 1.
walls 20 of the enclosure 2 comprise a lower base 24 and a ceiling 25 opposite the lower base 24.
at least one hole 21 is made in the ceiling 25 of the enclosure 2.
the walls 20 of the enclosure 2 also comprise two side walls 26 and an end wall 27 which are interposed between the base 24 and the ceiling 25.
the end wall 27 is located opposite the opening 23 which is designed to be closed by a door.
at least one hole 21 is made in the end wall 27 of the enclosure 2.
the device 1 comprises visual reference means 3 which identify a first zone 22 where the hole 21 is made.
the visual reference means 3 and the hole 21 are made at least in the end wall 27 of the enclosure 2.
the visual reference means 3 extend along an imaginary line that surrounds the through hole 21.
the visual reference means 3 are made as one with the enclosure 2.
the visual reference means 3 comprise one or more irregularities on the surface of the enclosure 2. More specifically, an irregularity may be a groove or a protrusion. Conveniently, at least one, advantageously a plurality, preferably all the protrusions or grooves comprise two intersecting sections that meet at a common zone, the two sections extending along two corresponding edges of the hole 21 (provided always that the hole 21 has been made correctly). Advantageously, if the hole 21 has an edge whose sides are oriented at 90° to each other, the two sections of the above mentioned grooves are also oriented at 90°.
the hole 21 is quadrilateral and the visual reference means 3 comprise four protrusions 30 or four grooves located at the four corners of the quadrilateral formed by the hole 21.
the visual reference means 3 might comprise a single protrusion or groove surrounding the entire hole 22.
the hole 21 might be quadrilateral and the visual reference means 3 might comprise two protrusions or grooves located at two opposite corners of the perimeter of the hole 21.
the visual reference means 3 comprise a first and a second reference 3a, 3b, separate from each other, the minimum distance of the first and the second reference 3a, 3b from the hole 21 being less than 1 millimetre.
the first and second references 3a, 3b form part of the protrusions 30 or grooves.
the visual reference means 3 comprise a plurality of separate references 3a, 3b, 3c, 3d, the minimum distance of each of the references 3a, 3b from the hole 21 being less than 1 millimetre (advantageously, the minimum distance being between 0.4 and 0.6 millimetres and preferably the minimum distance being between 0.45 and 0.55 millimetres).
This invention has important advantages. In particular, it allows product quality to be improved. Also, it allows assembly in the production line to be speeded up since only enclosures suitable for assembly reach the production line or, in any case, any unsuitable enclosures can be identified immediately and immediately rejected even in the assembly line.

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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)
Devices That Are Associated With Refrigeration Equipment (AREA)

EP11161376.6A 2010-04-08 2011-04-06 Verfahren zur Herstellung einer Kühlkammer und Kühlgerät mit entsprechender Kühlkammer Not-in-force EP2375202B1 (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
IT000016A ITRN20100016A1 (it)	2010-04-08	2010-04-08	Metodo di produzione di una cella frigorifera e dispositivo di refrigerazione comprendente detta cella frigorifera

Publications (2)

Publication Number	Publication Date
EP2375202A1 true EP2375202A1 (de)	2011-10-12
EP2375202B1 EP2375202B1 (de)	2018-07-25

Family

ID=43104380

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP11161376.6A Not-in-force EP2375202B1 (de)	2010-04-08	2011-04-06	Verfahren zur Herstellung einer Kühlkammer und Kühlgerät mit entsprechender Kühlkammer

Country Status (2)

Country	Link
EP (1)	EP2375202B1 (de)
IT (1)	ITRN20100016A1 (de)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE202005014378U1 (de) *	2005-09-12	2006-01-12	BSH Bosch und Siemens Hausgeräte GmbH	No-Frost-Kältegerät
WO2008110514A2 (de) *	2007-03-12	2008-09-18	BSH Bosch und Siemens Hausgeräte GmbH	Kühlgerät
CN100493890C (zh) *	2004-10-20	2009-06-03	广东科龙电器股份有限公司	一种电冰箱腔体的制造方法
CN101462357A (zh) *	2009-01-09	2009-06-24	昆山市三建模具机械有限公司	电冰箱内胆真空吸塑成型模上模

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE10259765A1 (de) *	2002-12-19	2004-07-01	BSH Bosch und Siemens Hausgeräte GmbH	Innenbehälter für ein Kältegerät

2010
- 2010-04-08 IT IT000016A patent/ITRN20100016A1/it unknown
2011
- 2011-04-06 EP EP11161376.6A patent/EP2375202B1/de not_active Not-in-force

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CN100493890C (zh) *	2004-10-20	2009-06-03	广东科龙电器股份有限公司	一种电冰箱腔体的制造方法
DE202005014378U1 (de) *	2005-09-12	2006-01-12	BSH Bosch und Siemens Hausgeräte GmbH	No-Frost-Kältegerät
WO2008110514A2 (de) *	2007-03-12	2008-09-18	BSH Bosch und Siemens Hausgeräte GmbH	Kühlgerät
CN101462357A (zh) *	2009-01-09	2009-06-24	昆山市三建模具机械有限公司	电冰箱内胆真空吸塑成型模上模

Also Published As

Publication number	Publication date
EP2375202B1 (de)	2018-07-25
ITRN20100016A1 (it)	2011-10-09

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