EP2691711A2 - Kältegerät mit axiallüfter - Google Patents
Kältegerät mit axiallüfterInfo
- Publication number
- EP2691711A2 EP2691711A2 EP12709855.6A EP12709855A EP2691711A2 EP 2691711 A2 EP2691711 A2 EP 2691711A2 EP 12709855 A EP12709855 A EP 12709855A EP 2691711 A2 EP2691711 A2 EP 2691711A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- plane
- air duct
- lying
- refrigerating appliance
- 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
- 238000003860 storage Methods 0.000 claims description 24
- 238000005057 refrigeration Methods 0.000 claims description 11
- 238000005520 cutting process Methods 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 claims 1
- 238000009826 distribution Methods 0.000 description 24
- 238000005192 partition Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 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
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
- F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
-
- 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
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
- F25D2317/063—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation with air guides
-
- 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
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
- F25D2317/067—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by air ducts
-
- 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
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
- F25D2317/067—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by air ducts
- F25D2317/0671—Inlet ducts
-
- 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
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
- F25D2317/068—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the fans
-
- 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
- F25D2500/00—Problems to be solved
- F25D2500/02—Geometry problems
Definitions
- the present invention relates to a refrigeration appliance, in particular a domestic refrigeration appliance, with an axial fan, which supplies a storage chamber of the refrigeration appliance with cold air.
- a refrigeration appliance in particular a domestic refrigeration appliance, with an axial fan, which supplies a storage chamber of the refrigeration appliance with cold air.
- the blowing direction coincides with the direction of the rotation axis, so that the air flow generated, unless it is formed on surfaces outside of the axial fan, is substantially circular in cross-section.
- such an air duct can hardly be accommodated in a domestic refrigeration appliance with the required cross-sectional area without severely restricting the usability of a storage chamber along which it extends.
- the free cross section of the air duct and the cross section of the axial fan overlap only in a small area, and since the airfoils of the axial fan, when they sweep this area to move transversely to the axis, the air flow driven by the axial fan, when in the Air duct enters, an impulse not only in the direction of the fan axis, but according to the movement of the air blades and across it.
- the consequence of this is that the air flow is distributed unevenly over the outlet of the air duct and distributed unevenly therefrom across the width of the storage chamber. This unequal distribution leads to a temperature gradient in the transverse direction of the storage chamber.
- Object of the present invention is to provide a refrigeration device with an axial fan and an adjoining the axial fan air duct, in which on a non-uniform flow distribution in the air duct temperature gradients going back in one
- Storage chamber are completely or at least largely suppressed.
- the object is achieved by, in a refrigerator with an axial fan and an adjoining air duct, wherein an inlet of the air duct is offset from the axis of the fan in a first direction, the air duct with respect to a through the axis of the fan extending and to the direction of the offset parallel plane is asymmetric. While the air driven by the axial fan in the air duct due to the offset of the cross sections of axial fan and air duct in the air duct preferably on one side of the plane, hereinafter referred to as the first side, urges, the asymmetry of such an unequal distribution can counteract.
- the axis of the fan will usually be oriented in the depth direction of a storage chamber of the refrigerator, into which the air duct opens, and the plane extends vertically and in the depth direction of the storage chamber.
- the orientation of the fan it will be assumed hereinafter of such orientation, although it will be understood that the effectiveness of the invention depends on the orientation of the
- the air duct increases in width from the inlet to an outlet at least transversely to the plane. If, as mentioned above, a part of the first plane lying on the first side
- Air ducts of the axial fan is exposed to more air than one on the
- the free cross-section of the first part of the air duct is smaller on at least part of its length than the free cross-section of the second part of the air duct.
- the free cross section of the first part is preferably at most half as large as that of the second part.
- the asymmetry defined above is particularly useful when the offset is so large that the axis of the fan does not pass through the inlet of the air duct. From a manufacturing point of view, it is particularly easy to produce the required asymmetry by virtue of the fact that an outlet of the air duct from a side wall of the
- Bearing chamber on the first side of the plane is further spaced than from a side wall on the second side of the plane.
- Such asymmetry is easily realized by suitably shaped lateral boundary walls of the air duct.
- the height of the air duct can then be constant in a cross-section perpendicular to the plane.
- Another way to create the asymmetry is that the height of the air duct in a cross-section perpendicular to the plane is lower on the first side than on the second. This results in the ability to bring the outlet of the air channel on both sides of the plane up to the side walls of the storage chamber, so that over the entire width of the storage chamber distributed air curtain can be obtained directly at the outlet of the air duct.
- the air duct may further include internal flow directors arranged to urge air from the first to the second side of the plane.
- FIG. 1 shows a schematic partial section through an inventive refrigeration device along a vertical and in the depth direction of the refrigerator housing oriented cutting plane.
- Figure 2 is a horizontal section along the plane II-II of Fig. 1.
- FIG. 3 shows a section analogous to FIG. 2 according to a second embodiment of FIG
- Fig. 1 shows in a schematic cross section the upper portion of an inner container 1, which together with an insulating surrounding its outer sides
- Foam layer is part of a body of a household refrigerator.
- the complete housing of the household refrigeration appliance comprises, in addition to the body, a door which is hinged thereto and from which an inner wall 2, which is deep-drawn like the inner container 1 made of plastic, is shown partially in the figure.
- Inner container 1 and inner wall 2 define an interior, which is divided by a parallel to a rear wall 3 and a ceiling 4 of the inner container 1 partitions 5, 6 in a storage chamber 7 for refrigerated goods, one attached to a corner between the ceiling 4 and rear wall 3
- Fan chamber 8 extending along the rear wall 3 intake passage 9 and extending below the ceiling 4 distribution channel 10.
- An evaporator can in the Distribution channel 10 or a (not shown) evaporator chamber at the upstream (here: lower) end of the intake passage 9untermine.
- the evaporator chamber can in turn be separated from the interior of the inner container 1 or, in particular in the case of a combination refrigerator with several
- Storage chambers 7, be separated within another inner container.
- the fan chamber 8 includes an axial fan 1 1 of known type, with a cuboid frame 12, in its round passage opening, a rotor 13 is rotatably driven with air blades 14 about a fan axis 15 to remove air from the
- the partition 6 extends over the entire width of the ceiling 4 of a
- the air flow to the right deflecting guide ribs 27 cause the flow velocity at the outlet 24 in the vicinity of the median plane 21 is significantly higher than in the vicinity of the side wall 23, so by the deflection of the air flow at the Inner wall 2 of the door on both sides of the median plane 21 an approximately equal air flow is obtained, which flows along the inner wall 2 downwards and away from the median plane 21, so that at a sufficient distance from the outlet 24 over the entire width of the inner wall 2 distributed, the storage chamber evenly flushing air flow is obtained.
- the height of the distribution channel 10 is constant in the width direction of the inner container 1 from one boundary wall 22 to the other 25 and continuously decreases slightly from the inlet 17 to the outlet 24 to despite the width of the increasing towards the door
- Distribution channels 10 to ensure a substantially constant free cross-sectional area.
- FIG. 3 shows a section analogous to FIG. 2 according to a second embodiment of the invention.
- boundary walls 22 ', 25' extend symmetrically on both sides of the center plane 21 and reach the height of the outlet 24, the side walls 23, 26 of the inner container 1.
- the distribution channel 10 in this embodiment as shown in Fig. 1 relative to the fan axis 15 after Here, the air flow at the inlet 17 of the distribution channel 10 is unevenly distributed and runs predominantly in the left of the median plane 21 extending portion 19. To compensate for this and divert a portion of the air in the part 20 to the right of the median plane 21 , Here is the height of the distribution channel 10 in cross section perpendicular to
- Center plane 21 variable as shown in Fig. 4 by the example of a section along the line IV-IV of FIG. 3.
- the height of the distribution channel 10 here decreases continuously from right to left across the width of the inner container 1 away.
- the cross-sectional modulation is achieved here in that the thickness of the underside horizontal partition wall 6 increases from right to left. It would also be conceivable to provide a cross-sectionally horizontal partition 6 of constant thickness, and instead the ceiling 4 of the
- Inner container 1 slightly slanted, from right to left sloping, to shape.
- the outlet 24 of the distribution channel reaches both side walls 23, of the inner container 1, an air flow of evenly distributed thickness across the entire width of the inner wall 2 away can be realized directly from the outlet 24.
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)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011006244A DE102011006244A1 (de) | 2011-03-28 | 2011-03-28 | Kältegerät mit Axiallüfter |
PCT/EP2012/054571 WO2012130624A2 (de) | 2011-03-28 | 2012-03-15 | Kältegerät mit axiallüfter |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2691711A2 true EP2691711A2 (de) | 2014-02-05 |
EP2691711B1 EP2691711B1 (de) | 2015-07-08 |
Family
ID=45872946
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12709855.6A Not-in-force EP2691711B1 (de) | 2011-03-28 | 2012-03-15 | Kältegerät mit axiallüfter |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2691711B1 (de) |
CN (1) | CN103459951B (de) |
DE (1) | DE102011006244A1 (de) |
WO (1) | WO2012130624A2 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105737483B (zh) * | 2014-12-12 | 2019-08-09 | 博西华电器(江苏)有限公司 | 制冷器具 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1220755B (it) * | 1988-06-08 | 1990-06-21 | Zanussi A Spa Industrie | Apparecchio refrigerante con almeno uno scomparto a temperatura uniforme ed elevata umidita' relativa |
US4938034A (en) * | 1989-05-03 | 1990-07-03 | Hill Refrigeration Corporation | Opened front refrigerated display case |
JP2002318054A (ja) * | 2001-04-20 | 2002-10-31 | Fujitsu General Ltd | 冷蔵庫 |
CN1265100C (zh) * | 2002-04-15 | 2006-07-19 | 乐金电子(天津)电器有限公司 | 贯流风机 |
CN1453540A (zh) * | 2003-05-29 | 2003-11-05 | 上海交通大学 | 冷藏室采用强制对流的直冷式电冰箱 |
DE102009002644A1 (de) * | 2009-04-24 | 2010-10-28 | BSH Bosch und Siemens Hausgeräte GmbH | Kältegerät mit Gebläse |
DE102009003263A1 (de) * | 2009-05-20 | 2010-11-25 | BSH Bosch und Siemens Hausgeräte GmbH | No-Frost-Kältegerät |
-
2011
- 2011-03-28 DE DE102011006244A patent/DE102011006244A1/de not_active Withdrawn
-
2012
- 2012-03-15 CN CN201280016267.9A patent/CN103459951B/zh active Active
- 2012-03-15 EP EP12709855.6A patent/EP2691711B1/de not_active Not-in-force
- 2012-03-15 WO PCT/EP2012/054571 patent/WO2012130624A2/de active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2012130624A2 * |
Also Published As
Publication number | Publication date |
---|---|
WO2012130624A2 (de) | 2012-10-04 |
EP2691711B1 (de) | 2015-07-08 |
WO2012130624A3 (de) | 2012-11-22 |
DE102011006244A1 (de) | 2012-10-04 |
CN103459951A (zh) | 2013-12-18 |
CN103459951B (zh) | 2016-02-17 |
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