EP2326897B1 - Appareil réfrigérant à niveau sonore réduit - Google Patents

Appareil réfrigérant à niveau sonore réduit Download PDF

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Publication number
EP2326897B1
EP2326897B1 EP09781473A EP09781473A EP2326897B1 EP 2326897 B1 EP2326897 B1 EP 2326897B1 EP 09781473 A EP09781473 A EP 09781473A EP 09781473 A EP09781473 A EP 09781473A EP 2326897 B1 EP2326897 B1 EP 2326897B1
Authority
EP
European Patent Office
Prior art keywords
layer
bitumen
refrigerating appliance
appliance according
wall
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
EP09781473A
Other languages
German (de)
English (en)
Other versions
EP2326897A1 (fr
Inventor
Rastislav Andrejco
Murat Darka
Adolf Feinauer
Jochen HÄRLEN
Robert Keidler
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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 BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP2326897A1 publication Critical patent/EP2326897A1/fr
Application granted granted Critical
Publication of EP2326897B1 publication Critical patent/EP2326897B1/fr
Active legal-status Critical Current
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
    • 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
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2500/00—Problems to be solved
    • F25B2500/12—Sound
    • 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
    • F25D2201/00—Insulation
    • F25D2201/30—Insulation with respect to sound

Definitions

  • the present invention relates to a refrigerator with a component emitting operating noise and means for suppressing the radiation of these operating noise to the outside.
  • the object of the present invention is therefore to provide a refrigeration device which enables a simple reduction of the noise emission during operation with a simple housing construction.
  • a vibration-damping bituminous layer is attached to an outside of the heat-insulating layer of the wall in a refrigeration device with a surrounding a cooled interior, a heat-insulating layer having wall and a structure-borne sound to the wall component.
  • the housing wall is successfully prevented from oscillating, it does not emit sound to the outside, even if a sound source inside the housing gives it.
  • the bitumen-containing layer disposed outside the heat insulating layer proves to be more effective in vibration damping than a corresponding inner layer. The reason for this is that with decreasing temperature the bitumen strongly hardens and damping by dissipation in the bituminous layer practically does not take place when it is cooled.
  • bitumen-containing layer is exposed on an outer side of the wall and is therefore connected to the wall on one side only. But it can also be mounted between the heat-insulating layer and the heat-insulating layer covering outer skin.
  • the bitumen-containing layer is fixed by at least one viscoelastic compound layer.
  • a layer which may for example be formed by a double-sided adhesive tape, may in turn contribute to noise damping by dissipation of vibration energy.
  • bitumen-containing layer When the bitumen-containing layer is disposed between the heat insulating layer and the outer skin, it may be fixed to both by a viscoelastic layer, and the sound penetrating from the inside to the outside is attenuated by dissipation in both layers.
  • bituminous layer is limited to a central region of the substantially flat wall.
  • the points with the highest vibration amplitude are generally located in a central region, so that here the weight increase by the bitumen-containing layer has the greatest effect.
  • the bituminous layer is most effective when it and the structure-borne sound transmitting component face each other on opposite sides of the wall.
  • bitumen-containing layer between two and ten kilograms per square meter has proven to be expedient.
  • the layer may be substantially pure bitumen.
  • aggregate particles may also be bound in the bituminous layer.
  • mineral aggregate particles are particularly suitable.
  • fibers or filaments can be bound in the bitumen, both in uncrosslinked form and in the form of a nonwoven or woven fabric.
  • Fig. 1 shown refrigerator comprises in a conventional manner a body 1 and at least one posted on the body 1 door 2, which limits a cooling space 3 together with this.
  • a machine room 4 is recessed, in which a compressor 5 is housed.
  • the compressor is part of a refrigerant circuit, together with an outside attached to a rear wall 6 of the body 1 condenser 7 and an evaporator 8.
  • the evaporator 8 is enclosed between an insulating material layer 9 and the refrigerator 3 delimiting plastic inner container.
  • Refrigerant from the condenser 7 reaches the evaporator 8 via a narrow capillary 10.
  • turbulences may occur which excite the oscillations of the evaporator 8.
  • These vibrations are transmitted to the insulation material layer 9 and, if they are not effectively damped, can excite externally audible vibrations of the body 1.
  • the evaporator 8 is mounted on the outside of the insulation material layer 9 opposite a plate 11 of bitumen inconveniencem material, due to the high density difference to the adjacent insulating material layer 9 of this is only slightly excitable to vibrations.
  • the plate 11 Since the plate 11 is located on the outside of the insulating material layer 9, it is hardly cooled by the evaporator 8, and their temperature may at best be slightly lower than that of the environment. At these temperatures, the bitumen of the plate 11 is relatively easy partly plastic, partly elastically deformable. Due to the plastic deformability are coupled externally into the plate 11 coupled vibrations in this strongly and their energy is converted into heat.
  • the condenser 7 is mounted in the immediate vicinity of the plate 11 behind the rear wall 6, so that when the compressor has been in operation for a while, the condenser 7 heats the plate 11.
  • the temperature of the bitumen may therefore even be above the ambient temperature. The heating increases the plasticity of the bitumen and thus the damping effect of the plate eleventh
  • Fig. 2 shows in an enlarged horizontal section a first example of the structure of the rear wall 6.
  • a solid outer skin 12 made of plastic, solid cardboard or other fiber material in the form of a shallow shell surrounds the insulating material layer 9. edges 13 of the shell are sealed with not shown outer skin elements of Side walls, floor or ceiling of the body 1 connected.
  • the bituminous plate 11 is enclosed between the outer skin 12 and the insulating material layer 9 and connected to both via a viscoelastic layer, here a double-sided adhesive tape 14.
  • the elasticity of the adhesive tape 14 allows transverse displacements between the opposing surfaces of the plate 11 and the insulating material layer 9 and the outer skin 12, which occur at bending vibrations of the outer skin 12, but dampens them by the viscosity of its adhesive and thus additionally contributes to the damping of vibrations the insulating material layer 9 and the outer skin 12 at.
  • the plate 11 does not cover the entire outer skin 12, but only a central area thereof, which constitutes about 40 to 80 percent of the area of the outer skin 12. Placement and extent of the plate 11 are set so that the plate 11 on the antinodes of the main, low-frequency natural oscillations of the Outer skin 12 extends so that it is effectively damped by the plate 11 and its vibration amplitude is reduced.
  • Fig. 3 shows a horizontal section according to a modified embodiment, in which the bitumen 11 is disposed on the outside of the outer skin 12 and secured by a single layer of adhesive tape 14.
  • the attenuation of the second adhesive tape layer of the embodiment of Fig. 2 the total damping effect can be quite equivalent to that of the construction of Fig. 2 be, since the outer bitumen plate 11 is usually warmer in operation than the embedded between the outer skin 12 and insulating material layer 9 plate.
  • Fig. 4 shows in one too Fig. 1 analog section of an inventive refrigerator in no-frost construction with a housed in a separated chamber 3 from the refrigerator 15 evaporator 8 and a fan 16 for driving the air exchange between the chamber 15 and the refrigerator 3.
  • the fan 16 a source of outwardly radiated operating noise.
  • the fan 16 is arranged here so that its vibrations essentially stimulate the rear wall 6 of the body 1 to vibrate.
  • a bitumen plate 11 is provided on the outside of the fan 16 opposite. This can, as in Fig. 2 shown embedded in the rear wall 6 or according to the Fig. 3 be attached to the outside of the rear wall.
  • a liquefier 7 could be as in Fig. 1 be shown mounted in front of the rear wall; in the case shown here, it is housed in the engine room 4 adjacent to the compressor 5, and a second fan 17 provides for the discharge of heated to condenser 7 and compressor 5 air from the engine room 4.
  • a second fan 17 provides for the discharge of heated to condenser 7 and compressor 5 air from the engine room 4.
  • the hot air can also be dissipated by other means, such as a hollow base 18 of the device.
  • bitumen plate 11 may of course also be attached to this wall.
  • Fig. 5 shows the case where the bitumen 11 the ceiling 18 of the body 1 damped.
  • the bituminous plate 11 is here at least partially received in a lower side hollow worktop 19, which is mounted on top of the body 1.
  • the composition of the bitumen plate 11 may be different. It can consist of essentially pure bitumen or be mixed with various surcharges.
  • mineral additives such as ground minerals come into consideration. Fibers and filaments, particularly those of low tensile elongation, can improve damping by resisting deformation of the bituminous sheet 11 and thereby force the bitumen in its immediate vicinity to undergo increased plastic deformation.
  • the fibers or filaments may be embedded unconnected to one another in the bitumen; but they can also be incorporated as a fleece or as a fabric.

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)
  • Vibration Prevention Devices (AREA)
  • Building Environments (AREA)
  • Thermal Insulation (AREA)

Claims (11)

  1. Appareil réfrigérant avec une paroi (6, 18) entourant un espace intérieur réfrigéré (3) et munie d'une couche thermo-isolante (9), et avec un composant (8, 16) transmettant à la paroi (6, 18) les bruits de structure, caractérisé en ce qu'une couche bitumineuse (11) amortissant les vibrations est placée sur une face externe de la couche thermo-isolante (9) de la paroi (6, 18).
  2. Appareil réfrigérant selon la revendication 1, caractérisé en ce que la couche bitumineuse (11) est découverte sur une face externe de la paroi (6, 18).
  3. Appareil réfrigérant selon la revendication 1, caractérisé en ce que la couche bitumineuse (11) est placée entre la couche thermo-isolante (9) et une peau extérieure (12) recouvrant la couche thermo-isolante.
  4. Appareil réfrigérant selon l'une des revendications précédentes, caractérisé en ce que la couche bitumineuse (11) est fixée par au moins une couche de liaison (14) viscoélastique.
  5. Appareil réfrigérant selon l'une des revendications précédentes, caractérisé en ce que la couche bitumineuse (11) est limitée à une partie centrale de la paroi (6, 18) essentiellement plane.
  6. Appareil réfrigérant selon l'une des revendications précédentes, caractérisé en ce que la couche bitumineuse (11) et le composant (8, 16) transmettant les bruits de structure se font face sur des côtés opposés de la paroi (6, 18).
  7. Appareil réfrigérant selon l'une des revendications précédentes, caractérisé en ce que la couche bitumineuse (11) présente un grammage compris entre 2 et 10 kg/m2.
  8. Appareil réfrigérant selon l'une des revendications précédentes, caractérisé en ce que la couche bitumineuse (11) est essentiellement du bitume pur.
  9. Appareil réfrigérant selon l'une des revendications précédentes, caractérisé en ce que la couche bitumineuse (11) contient des particules de granulat liées dans du bitume.
  10. Appareil réfrigérant selon l'une des revendications précédentes, caractérisé en ce que la couche bitumineuse (11) contient des fibres ou filaments liés dans du bitume.
  11. Appareil réfrigérant selon la revendication 10, caractérisé en ce que les fibres ou filaments forment un non-tissé ou un tissu.
EP09781473A 2008-08-22 2009-08-04 Appareil réfrigérant à niveau sonore réduit Active EP2326897B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200810041478 DE102008041478A1 (de) 2008-08-22 2008-08-22 Geräuschreduziertes Kältegerät
PCT/EP2009/060096 WO2010020538A1 (fr) 2008-08-22 2009-08-04 Appareil réfrigérant à niveau sonore réduit

Publications (2)

Publication Number Publication Date
EP2326897A1 EP2326897A1 (fr) 2011-06-01
EP2326897B1 true EP2326897B1 (fr) 2012-10-10

Family

ID=41558918

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09781473A Active EP2326897B1 (fr) 2008-08-22 2009-08-04 Appareil réfrigérant à niveau sonore réduit

Country Status (6)

Country Link
EP (1) EP2326897B1 (fr)
CN (1) CN102132116B (fr)
DE (1) DE102008041478A1 (fr)
ES (1) ES2396616T3 (fr)
RU (1) RU2499207C2 (fr)
WO (1) WO2010020538A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010003825A1 (de) * 2010-04-09 2011-10-13 BSH Bosch und Siemens Hausgeräte GmbH Drahtrohrwärmetauscher, Verfahren zu dessen Herstellung und diesen verwendendes Kältegerät
DE102012202320A1 (de) 2012-02-16 2013-08-22 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät, insbesondere Haushaltskältegerät, und Verfahren zu dessen Herstellung

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3802950A (en) * 1972-06-28 1974-04-09 Monsanto Co Cellular polyurethane-bitumen-plastic composite
RU2012546C1 (ru) * 1991-06-25 1994-05-15 Чжен Виктор Анатольевич Способ изготовления теплоизоляции
DE4141343A1 (de) * 1991-11-25 1993-05-27 Walter Dipl Phys Jacksch Belagsystem zur koerperschalldaempfung (schwingungsdaempfung) von zu schwingungen angeregten flaechenhaften oder stabfoermigen gebilden
US5408921A (en) * 1992-12-31 1995-04-25 Frigoscandia Equipment Aktiebolag Apparatus for gas treatment of products
CN2204386Y (zh) * 1994-04-20 1995-08-02 湘潭科路达工贸公司气体机械研究所 低噪声窗式空调器
US5669232A (en) 1994-11-22 1997-09-23 Sanyo Electric Co., Ltd. Refrigerating unit
DE19818993A1 (de) 1998-04-28 1999-11-04 Bsh Bosch Siemens Hausgeraete Kältegerät
JP4135436B2 (ja) * 2002-08-29 2008-08-20 株式会社デンソー 車載空調ケースのドレンホース保護構造
KR101106643B1 (ko) * 2005-11-22 2012-01-18 삼성전자주식회사 냉장고

Also Published As

Publication number Publication date
WO2010020538A1 (fr) 2010-02-25
RU2499207C2 (ru) 2013-11-20
CN102132116A (zh) 2011-07-20
DE102008041478A1 (de) 2010-02-25
ES2396616T3 (es) 2013-02-22
RU2011108700A (ru) 2012-09-27
EP2326897A1 (fr) 2011-06-01
CN102132116B (zh) 2015-09-30

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