EP2326897A1 - Geräuschreduziertes kältegerät - Google Patents
Geräuschreduziertes kältegerätInfo
- Publication number
- EP2326897A1 EP2326897A1 EP09781473A EP09781473A EP2326897A1 EP 2326897 A1 EP2326897 A1 EP 2326897A1 EP 09781473 A EP09781473 A EP 09781473A EP 09781473 A EP09781473 A EP 09781473A EP 2326897 A1 EP2326897 A1 EP 2326897A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bitumen
- layer
- refrigerating appliance
- wall
- appliance according
- 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.)
- Granted
Links
- 239000010426 asphalt Substances 0.000 claims abstract description 36
- 238000013016 damping Methods 0.000 claims abstract description 11
- 239000000835 fiber Substances 0.000 claims description 5
- 239000002245 particle Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 46
- 238000005057 refrigeration Methods 0.000 description 9
- 239000011810 insulating material Substances 0.000 description 8
- 239000002390 adhesive tape Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000004033 plastic Substances 0.000 description 5
- 239000003507 refrigerant Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
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.
- DE 198 18 993 A1 describes a refrigeration device with a wall surrounding a cooled interior, a heat-insulating layer and an evaporator, which is mounted on the side facing the interior of the heat-insulating layer and is excited by turbulence of the injected refrigerant to vibrate.
- a bituminous foil is attached to the evaporator.
- the bituminous film increases the mass of the evaporator and thereby shifts its natural vibration frequencies, so that the evaporator is largely resistant to vibration for operatively acting on him exciter frequencies.
- 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.
- bitumen-containing layer in contrast to the teaching of DE 198 18 993 A1, is no longer attached directly to the noise-generating component, but rather to the outside of the housing wall, a direct coupling to the noise-generating component, by means of which its natural vibration frequencies could be shifted, is eliminated this turns out to be of little importance for the effectiveness, since the bitumen-containing layer instead influences the resonance behavior of the housing wall.
- 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.
- Such a layer which can be formed for example by a double-sided adhesive tape, in turn can contribute to noise reduction 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 bituminous 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 shows a schematic section through an inventive refrigeration device.
- FIG. 2 shows a detail section through the rear wall of the refrigeration device.
- Fig. 4 is a similar to Fig. 1 section through a refrigerator according to a second
- Fig. 5 is an analogous to FIG. 1 section according to a third embodiment.
- the housing of the refrigerator shown in Fig. 1 comprises in a conventional manner a body 1 and at least one hinged to the body 1 door 2, which defines 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 insulating material layer 9 opposite a plate 1 1 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 1 1 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 1 1 behind the rear wall 6, so that when the compressor has been in operation for a while, the condenser 7, the plate 11 is heated.
- 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 1 1.
- 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 not dense with here shown outer skin panels of side walls, floor or ceiling of the body 1 connected.
- the bituminous plate 1 1 is enclosed between the outer skin 12 and the insulation material layer 9 and connected to both in each case 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 1 1 and the insulating material layer 9 and the outer skin 12, which occur at bending vibrations of the outer skin 12, but attenuates them by the viscosity of its adhesive and thus additionally contributes to the damping of Vibrations of the insulating material layer 9 and the outer skin 12 at.
- the plate 1 1 does not cover the entire outer skin 12, but only a central portion of this, which makes up about 40 to 80 percent of the surface of the outer skin 12. Placement and expansion of the plate 1 1 are set so that the plate 11 on the antinodes of the main, low-frequency natural oscillations of Outer skin 12 extends so that it is effectively damped by the plate 1 1 and their vibration amplitude is reduced.
- FIG 3 shows a horizontal section according to a modified embodiment, in which the bituminous plate 1 1 is arranged on the outside of the outer skin 12 and is fastened by a single layer of adhesive tape 14.
- the attenuation of the second adhesive tape layer of the embodiment of Fig. 2 but the total attenuation effect can be quite equivalent to that of the structure of Fig. 2, since the outer bitumen 11 in operation is usually warmer than that between outer skin 12 and insulating material layer. 9 embedded plate.
- FIG. 4 shows, in a section analogous to FIG. 1, a refrigeration device according to the invention in no-frost construction with an evaporator 8 accommodated in a chamber 15 separated from the refrigerator compartment 3 and a ventilator 16 for driving the air exchange between the compartment 15 and the refrigerator compartment 3
- the fan 16 may be a significant 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 1 1 is provided on the outside of the fan 16 opposite. This can, as shown in Fig. 2, embedded in the rear wall 6 or be mounted on the outside according to the Fig. 3 on the rear wall.
- a condenser 7 could be mounted as shown in Figure 1 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 plate 11, the ceiling 18 of the body 1 damped.
- the bituminous plate 1 1 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. In order to increase the mass of the plate 1 1 at a constant plate thickness, mineral additives such as minerals are considered. Fibers and filaments, especially 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)
Abstract
Description
Claims
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 (de) | 2008-08-22 | 2009-08-04 | Geräuschreduziertes kältegerät |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2326897A1 true EP2326897A1 (de) | 2011-06-01 |
| EP2326897B1 EP2326897B1 (de) | 2012-10-10 |
Family
ID=41558918
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09781473A Active EP2326897B1 (de) | 2008-08-22 | 2009-08-04 | Geräuschreduziertes kältegerät |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP2326897B1 (de) |
| CN (1) | CN102132116B (de) |
| DE (1) | DE102008041478A1 (de) |
| ES (1) | ES2396616T3 (de) |
| RU (1) | RU2499207C2 (de) |
| WO (1) | WO2010020538A1 (de) |
Families Citing this family (2)
| 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)
| 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 |
-
2008
- 2008-08-22 DE DE200810041478 patent/DE102008041478A1/de not_active Withdrawn
-
2009
- 2009-08-04 CN CN200980132833.0A patent/CN102132116B/zh not_active Expired - Fee Related
- 2009-08-04 WO PCT/EP2009/060096 patent/WO2010020538A1/de not_active Ceased
- 2009-08-04 ES ES09781473T patent/ES2396616T3/es active Active
- 2009-08-04 RU RU2011108700/13A patent/RU2499207C2/ru active
- 2009-08-04 EP EP09781473A patent/EP2326897B1/de active Active
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2010020538A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2010020538A1 (de) | 2010-02-25 |
| RU2499207C2 (ru) | 2013-11-20 |
| CN102132116A (zh) | 2011-07-20 |
| EP2326897B1 (de) | 2012-10-10 |
| DE102008041478A1 (de) | 2010-02-25 |
| ES2396616T3 (es) | 2013-02-22 |
| RU2011108700A (ru) | 2012-09-27 |
| CN102132116B (zh) | 2015-09-30 |
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| RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: FEINAUER, ADOLF Inventor name: HAERLEN, JOCHEN Inventor name: KEIDLER, ROBERT Inventor name: DARKA, MURAT Inventor name: ANDREJCO, RASTISLAV |
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