EP1604159A1 - Systeme de reduction du bruit - Google Patents
Systeme de reduction du bruitInfo
- Publication number
- EP1604159A1 EP1604159A1 EP04714991A EP04714991A EP1604159A1 EP 1604159 A1 EP1604159 A1 EP 1604159A1 EP 04714991 A EP04714991 A EP 04714991A EP 04714991 A EP04714991 A EP 04714991A EP 1604159 A1 EP1604159 A1 EP 1604159A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cabinet
- plate
- compressor
- refrigerator
- condenser
- 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
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
- F25D23/006—General constructional features for mounting refrigerating machinery components
-
- 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
Definitions
- the present invention relates to a refrigerator and/or freezer cabinet comprising an outer shell, an inner shell and at least one cooling system having at least one evaporator, at least one compressor and at least one condenser between which a cooling agent is circulated through a cooling tube.
- Each of said evaporators is being positioned inside a cabinet space, said compressor being positioned in a compressor space and at least one of said condensers being mounted at the outer shell on the rear side of said cabinet so that a condenser space is formed extending in a vertical direction between the outer shell and the condenser.
- At least one opening of said compressor space is substantially facing the rear side of said cabinet.
- the cabinet has at least one cooling system for cooling the cabinet compartment -s. If the cabinet combines refrigeration and freezing it may comprise two different cooling systems.
- Each cooling system comprises at least one evaporator, one condenser and one compressor.
- the compressor for example can be used both for a refrigerator compartment and a freezer compartment.
- the cooling system also comprises a cooling pipe or tube which connects said parts in order for cooling agent to flow.
- the cooling agent circulates through the closed cooling system from the evaporator to the condenser.
- the heat is received by the agent inside the evaporator.
- the received hear causes the agent to vaporize.
- the condenser the vaporized agent transmits the heat energy to the outside air, whereby the agent is liquefied again.
- the compressor keeps up the pressure of the agent and makes it circulate in the cooling system.
- the condenser is normally placed along the vertical backside of the cabinet on its outside and is normally covering a major parts of said backside. It comprises a tube section with a lot a parallel turns together with fins in order to increase the contact surface with the surrounding air. There is also normally a space between the backside and the condenser which improves the air flow along the condenser. The space forms a vertical duct along the backside. When the air receives the heat energy from the agent in the condenser it starts rising upwards, which causes air to normally flow upwards along the duct.
- the compressor in the cooling system is normally placed in a compressor space in the bottom part of the cabinet. If the cabinet has two compressors both are normally placed in the same space.
- the space is normally rectangular and stretches from the furthest back part of the cabinet and a bit forward. This space steals volume from the cabinet compartment which can be seen looking into the compartment.
- a channel or duct connects the compressor space with an opening facing the front side of the cabinet at the bottom of the cabinet. The channel helps the air to circulate and ventilate heat transferred from the condenser.
- the compressor and a heat exchanger placed in the same space also produces a lot of heat which is ventilated by said airflow.
- the flow circulates through the bottom duct, via the compressor space upwards along the condenser duct.
- the object of the present invention is therefore to provide a solution to the noise emission problems of existing refrigerator or freezer cabinets and to provide refrigerator or freezer cabinet with at least one cooling system wherein noise generated by the cooling system, such as compressor sound emissions is effectively attenuated.
- the cabinet should also provide a heat transfer that works efficient enough, not causing any problems for the cooling system of the cabinet.
- the cabinet of the present invention provides a solution to the above-mentioned objects.
- the present invention relates to a refrigerator and/or freezer cabinet comprising an outer shell, an inner shell and at least one cooling system having at least one evaporator, at least one compressor and at least one condenser between which a cooling agent is circulated through a cooling tube.
- Each of said evaporators is being positioned inside a cabinet space, said compressor being positioned in a compressor space and at least one of said condensers being mounted at the outer shell on the rear side of said cabinet so that a condenser space is formed extending in a vertical direction between the outer shell and the condenser.
- At least one opening of said compressor space is substantially facing the rear side of said cabinet.
- at least one covering plate is being positioned at the rear side of said cabinet and at least partly covering said condenser, said plate being mounted substantially in parallel with said rear side of the outer shell, sound absorbing means being mounted between said plate and said condenser.
- the opening of said compressor space is being partly covered by one plate in which the partly covered opening comprises one open section facing upwards in a substantially vertical direction, said open section connecting sai d ⁇ compressor space at least with said duct.
- the furthest back of at least one of sai d plates is preferably substantially positioned at a vertical surface which is substanti ally parallel with the backside and in level with the furthest back part of said cabinet.
- at least one of said plates at least comprises one part made in metal, plastic or a sound absorbing soft material.
- said sound absorbing means consist in at least one sound absorbing plate made in a sound absorbing material, preferably made of a polyester foam sound absorbing material.
- the plate of any embodiment is being designed with two parallel shoulders extending vertically along at least parts of the right and left side of said plate, said plate at least partly being in contact with said backside through said shoulders.
- the plate should preferably be in substantially airtight surface contact with said cabinet at its two vertical sides and at its lower horizontal side.
- the plate of any embodiment preferably extends substantially from the level of the cabinet bottom at least up to the highest level of said opening of the compressor space.
- said sound absorbing plate of one embodiment is preferably being mounted on the side of the plastic plate which faces the cabinet, the absorbing plate preferably extending substantially from the level of the cabinet bottom at least up to the highest level of said opening of the compressor space.
- the absorbing plate when relevant substantially fills the space between the metal plate and the condenser.
- a horizontal compressor duct connects said compressor space with an compressor opening substantially facing the front side of said cabinet, the bottom of said compressor duct being substantially covered by a sound absorbing material, preferably made of a polyester foam sound absorbing material.
- the sound absorbing material is preferably substantially or at least half the volume of said compressor duct.
- Fig. 1 shows a perspective view of a refrigerator or freezer cabinet on which the present invention is being applied.
- Fig. 2 shows a perspective view of a cabinet according to fig. 1 together with the present invention.
- Fig. 3 shows a blown out perspective view of the cabinet and present invention according to fig. 2.
- Fig. 4 shows a blown out perspective view of parts of the present invention according to fig. 2.
- FIG. 1 the rear parts of a refrigerator or freezer cabinet of a conventional type is shown.
- the cabinet comprised an outer shell 10 normally made in metal or plastic.
- the shell enclosed an inner liner (not shown) which is normally made of molded plastic. Between the shell and the liner, insulation material is placed which keeps the cool energy inside the cabinet.
- a door (not shown) on the front side encloses a compartment together with the inner liner.
- the cabinet may have more than one compartment, each having the function of working as a refrigerator or freezer cabinet.
- the cabinet furthermore comprises a back plate 11 held in place by hooking means 12 formed as part of the outer shell 10.
- This type of solution is not necessary but illustrates how a back plate could be mounted.
- the backside of the cabinet, which is the cabinets rear side facing backwards.
- a condenser 13 is mounted at the backside of the cabinet.
- the condenser consists a tube 14 meandering back and forth along the backside in parallel turns.
- the condenser comprises fins 15 that improve the heat transfer from the condenser.
- the condenser is supported by holders 18. These holds the condenser in a position distanced from and not in direct contact with the backside and in parallel with said side. The distance forms a space along the backside stretching as a duct or channel from the lower to the upper point of the condenser 13.
- the condenser 13 is the only part shown in the figures of the cooling system which provides cooling energy to a compartment.
- the system also comprises one evaporator in each compartment and one compressor.
- the system may be used also for cabinets having both a refrigeration compartment and a freezer compartment.
- the parts mentioned are all connected with a tube and together forms a closed system in which cooling agent flows.
- the agent flows through the evaporator where it receives heat and therefore vaporizes.
- the heat energy of the agent is then transferred out into the air, whereby the agent is again liquefied.
- the compressor keeps up the circulation and pressure inside the closed cooling system.
- the compressor (not shown) is normally placed in a compressor space 16 in the bottom part of the cabinet. If the cabinet has two compressors, both are normally placed in the same space.
- the cooling system also comprises a heat exchanger (not shown) placed in the same space. As shown in fig. 1 the space is normally rectangular and stretches from the furthest back part of the cabinet and a bit forward. This space steals volume from the cabinet compartment, which can be seen if one is looking into the compartment.
- a channel or duct 17 connects the compressor space with an opening (not shown) facing the front side of the cabinet at the bottom of the cabinet.
- air In order to transfer and remove heat emitted from the compressor and the condenser 13 air circulates.
- the heating of the air drives the circulation.
- the heated air flows from the front opening of the duct 17 into the compressor space 16 and upward along the condenser through the duct. Since nothing hinders the air it may also flow upward in other places. The heat is effectively removed by the airflow.
- the problem of cooling systems is that they often produce noise emissions. These could for example be caused by boiling or flowing agent or resonance vibrations caused by the compressor motor. These emissions could be very disturbing for the user. Most noise emissions caused by vibrations etc. come directly from the compressor and most of the sound emissions caused by the flowing agent come from the heat exchanger.
- the features of the present invention intends to solve this problem and also enable an effective air circulation in order to allow heat to be removed as effective as necessary.
- a cover plate 20 stretches from the lower point of the cabinet upward along the backside at least to the middle of said cabinet.
- the plate is placed outside the condenser and covers the opening of the compressor space 16 facing backwards.
- the plate is preferably made in plastic, vacuum molded and around 2 millimeters thick.
- a preferable material is polystyrenebutadiene.
- a sound absorption plate 21 is mounted between the cover plate and the backside of the cabinet.
- the sound absorption plate may for example be made in a polyester foam sound absorbing material.
- the absorption plate may preferably also be deformable in order to work effective with the cabinet. Moreover, said absorption material should of course work effective when it comes to sound absorption and handle the heat created by the cooling system. Preferably, the absorption material should also be able to ventilate heat through its fiber structure without allowing sound emissions to pass.
- the side of the cover plate 20 which faces the backside of the cabinet is shown.
- the absorption plate 21 has a certain thickness which is not specified further. The demand of the plate 21 is to fit, deform and work in a good way together with the cabinet.
- the cover plate has two horizontal walls 22 between which the absorption plate should fit. Moreover, the cover plate has two shoulders 23 formed in one piece with said plate. The plate is substantially flat as shown in the figures.
- the shoulders stretch from the upper part of the plate downward along the left and right sides of the cover plate. Further, reinforcements 24 helps up the stiffness of the 2 millimeters thin cover plate 20.
- the cover plate 20 in the illustrative embodiment is preferably around 1100 millimeters long and the sound absorption plate 21 is around 600 millimeters long.
- the cover plate 20 together with the sound absorption plate will cover at least a part of the backside. Since the cover plate is provided with shoulders, the mounted plates will cause a very little increase in dimensions of the cabinet.
- the furthest back part of the cover plate will be substantially positioned at a level backward which is substantially the same as the level of the furthest back part of said cabinet. In theory this means that the furthest back part of the cover plate is substantially positioned at a vertical surface which is substantially parallel with the backside and in vertical level with the furthest back part of said cabinet.
- the duct formed between the condenser 13 and the back plate 11 will be unaffected by the plates 20 - 21.
- the air will circulate via the duct 17, through the compressor space 16 and upward along the duct formed between the condenser 13 and the back plate 11.
- the shoulders will hinder circulating air from leaking out at the hooking means 12. Since the air circulation works as necessary, the heat generated at the compressor, heat exchanger and the condenser will be removed effectively.
- the plates will furthermore isolate from noise mainly emitted from the compressor and the heat exchanger to reach out to the open room surrounding the cabinet.
- the sound transferred backwards will the blocked by the plates 20 - 21 and sound transported upwards though the duct formed at the condenser 13 will be absorbed by the sound absorption plate 21 extending upwards a bit along said duct. It is shown that the sound absorption effect is maximized with a cover plate of 1100 millimeters and an absorption plate of around 600 millimeters. Increasing the height of the cover plate will only give eye-looking benefits and increasing the height of the absorption plate will give negative results for the heat removal effect.
- a sound absorption plate 25 is also placed inside the duct 17 extending between the compressor space 16 and an opening facing the front side of the cabinet. As shown in fig. 3 the plate substantially covers the whole bottom of said duct 17. This means that the plate has a width substantially corresponding to the breadth of the compressor space.
- the plate is preferably made in the same material as the absorption plate 21.
- the volume of the plate fills a substantial part of the duct, for example half of the volume of said duct.
- the duct of the illustrative embodiment extends horizontally from the compressor space 16 along the bottom of the cabinet.
- the duct 17 is enclosed by a cabinet outer shell 10 bottom plate, 2 vertical outer shell side plates and one upper plate defining the bottom of the lower compartment.
- the noise emitted frontward through the duct 17 from the compressor and heat exchanger will be absorbed by the plate 25.
- the plate 25 volume is maximized in order to achieve the best sound absorption effect without causing negative results for the air circulation and the heat removal effect.
- the volume of the plate 25 may be half the volume of the duct 17.
- the scope of the invention is to use material the remove noise emitted from a cooling system to the open room surrounding the refrigerator or freezer cabinet. And also to use a plate positioned on the rear side of the cabinet in order to achieve this without loosing heat convection effect. It should be understood by a person skilled in the art to replace the plates described with only one plate or another combination of plates to improve the sound absorption effect. Moreover, the dimensions of each plate in the illustrative embodiment should not be seen as limiting. Any dimensions choose depends on which cabinet the invention is applied to and which materials that are used. It is therefore obvious for a person skilled in the art to choose the proper dimensions in order to maximize the sound absorption effect without loosing too much of the heat removal properties. The dimension selection also encounters the sound absorptions plate placed in the horizontal duct at the compressor space.
- a fan of a dynamic cooling system placed on the upper part of the rear side of the cabinet could be covered by a plate in the same manner.
- the demands of air circulation and sound absorption for this plate is solved in the same manner and falls within the scope of the present invention. This particularly relates to the design and selection of material.
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)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Refrigerator Housings (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE0300646 | 2003-03-10 | ||
SE0300646A SE0300646D0 (sv) | 2003-03-10 | 2003-03-10 | System för ljuddämpning |
PCT/SE2004/000267 WO2004081473A1 (fr) | 2003-03-10 | 2004-02-26 | Systeme de reduction du bruit |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1604159A1 true EP1604159A1 (fr) | 2005-12-14 |
EP1604159B1 EP1604159B1 (fr) | 2010-10-20 |
Family
ID=20290626
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP04714991A Expired - Lifetime EP1604159B1 (fr) | 2003-03-10 | 2004-02-26 | Refrigerateur avec systeme de reduction du bruit |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1604159B1 (fr) |
JP (1) | JP3129225U (fr) |
CN (1) | CN2837748Y (fr) |
AT (1) | ATE485485T1 (fr) |
DE (1) | DE602004029656D1 (fr) |
SE (1) | SE0300646D0 (fr) |
WO (1) | WO2004081473A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3532781A4 (fr) * | 2016-10-26 | 2020-07-29 | Whirlpool Corporation | Conception de condenseur à surface intégrée dans le dos d'un réfrigérateur |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2136168B1 (fr) | 2008-06-20 | 2020-01-15 | Electrolux Home Products Corporation N.V. | Condensateur d'appareil de refroidissement, et appareil de refroidissement l'incluant |
CN101907377B (zh) * | 2010-08-16 | 2016-01-06 | 倪既民 | 气道散热式电冰箱 |
DE102012003147A1 (de) * | 2012-01-24 | 2013-07-25 | Liebherr-Hausgeräte Lienz Gmbh | Kühl- und/oder Gefriergerät |
DE102012001569A1 (de) * | 2012-01-27 | 2013-08-01 | Liebherr-Hausgeräte Ochsenhausen GmbH | Kühl- und/oder Gefriergerät |
CN103615854A (zh) * | 2013-10-17 | 2014-03-05 | 宁波罗特电器有限公司 | 带散热装置的冷藏柜 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB547360A (en) * | 1940-09-27 | 1942-08-24 | British Thomson Houston Co Ltd | Improvements in and relating to refrigerator cabinets |
US3785168A (en) * | 1972-12-18 | 1974-01-15 | Gen Electric | Household refrigerator |
IT211720Z2 (it) * | 1987-02-06 | 1989-04-07 | Zanussi Elettrodomestici | Apparecchio frigorifero o congelatore domestico con parete di schiena chiudibile. |
DE4243320A1 (de) * | 1992-12-21 | 1994-06-23 | Illbruck Gmbh | Kühlmöbel |
KR20030004899A (ko) * | 2001-07-07 | 2003-01-15 | 엘지전자 주식회사 | 백커버 겸용 응축기가 구비된 냉장고 |
-
2003
- 2003-03-10 SE SE0300646A patent/SE0300646D0/xx unknown
-
2004
- 2004-02-26 DE DE602004029656T patent/DE602004029656D1/de not_active Expired - Lifetime
- 2004-02-26 JP JP2006600009U patent/JP3129225U/ja not_active Expired - Fee Related
- 2004-02-26 EP EP04714991A patent/EP1604159B1/fr not_active Expired - Lifetime
- 2004-02-26 AT AT04714991T patent/ATE485485T1/de not_active IP Right Cessation
- 2004-02-26 WO PCT/SE2004/000267 patent/WO2004081473A1/fr active IP Right Grant
- 2004-02-26 CN CNU2004900000073U patent/CN2837748Y/zh not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2004081473A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3532781A4 (fr) * | 2016-10-26 | 2020-07-29 | Whirlpool Corporation | Conception de condenseur à surface intégrée dans le dos d'un réfrigérateur |
US11441834B2 (en) | 2016-10-26 | 2022-09-13 | Whirlpool Corporation | Skin condenser design integrated in the refrigerator back |
Also Published As
Publication number | Publication date |
---|---|
DE602004029656D1 (de) | 2010-12-02 |
CN2837748Y (zh) | 2006-11-15 |
EP1604159B1 (fr) | 2010-10-20 |
WO2004081473A1 (fr) | 2004-09-23 |
ATE485485T1 (de) | 2010-11-15 |
SE0300646D0 (sv) | 2003-03-10 |
JP3129225U (ja) | 2007-02-15 |
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