EP4025851A1 - Kältegerät und siphon dafür - Google Patents
Kältegerät und siphon dafürInfo
- Publication number
- EP4025851A1 EP4025851A1 EP20758192.7A EP20758192A EP4025851A1 EP 4025851 A1 EP4025851 A1 EP 4025851A1 EP 20758192 A EP20758192 A EP 20758192A EP 4025851 A1 EP4025851 A1 EP 4025851A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wall
- siphon
- cavity
- component
- siphon 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.)
- Withdrawn
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
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/14—Collecting or removing condensed and defrost water; Drip trays
-
- 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
- F25D2321/00—Details or arrangements for defrosting; Preventing frosting; Removing condensed or defrost water, not provided for in other groups of this subclass
- F25D2321/14—Collecting condense or defrost water; Removing condense or defrost water
- F25D2321/146—Collecting condense or defrost water; Removing condense or defrost water characterised by the pipes or pipe connections
Definitions
- the present invention relates to a compact siphon and a refrigeration device in which the siphon is used.
- a siphon that connects a cooled interior of the refrigeration device with the environment, on the one hand to enable pressure equalization with the environment if warm air that enters the interior when the door is open cools down after the door is closed, but on the other hand to ensure constant air exchange with the environment prevent, is known per se and usually comprises a U-shaped curved pipe that extends in a thermal insulation layer or in a machine room of the refrigeration device and is filled with water under normal operating conditions.
- Such a pipe is bulky and difficult to accommodate in a space-saving manner.
- it is complex to fix such a long pipe in such a way that it does not form a thermal bridge in the thermal insulation layer. When installed in the engine room, it can only function as a thermal bridge to a limited extent; However, due to the high temperatures in the engine room, there is a risk that a biofilm will grow in the pipe and block it.
- a compact siphon is known from EP 1832687 B1, which essentially consists of two components, an outer component with a trench filled with water during operation, an outer wall of the trench being extended upwards to form a wide connection piece, and one Inner wall of the trench merges downward into a second, narrower connection piece, and an inner component which comprises a base plate and an annular wall protruding from the base plate, which is inserted through the wide connection piece into a position in which the annular wall dips into the trench.
- the wide inlet-side connection piece is unproblematic when using the siphon as an odor trap at an inlet of a sewer pipe.
- One object of the invention is to create a compact siphon which is suitable for use in a refrigeration device.
- the object is achieved in that in a siphon with a housing having a first and a second connection piece, in which an axis of one of the connection pieces extends through a free space of the other connection piece, and in a section plane crossing the axis between the first and the second Connection piece a first cavity adjoining the free space of the first connection piece, a second cavity which is separated from the first cavity on a first side of the section plane facing the first connection piece by a first wall and on a second side of the section plane facing the second connection piece first cavity adjoins, and has a third cavity adjoining the free space of the second connection piece, which adjoins the second cavity on the first side of the sectional plane and is separated from the second cavity by a second wall on the second side of the sectional plane, and in which the housing comprises a first and a second component, of which the first comprises at least the first connection piece and one of the walls and the other comprises the respective other wall, the second component comprises the second connection piece.
- the axes of the two connecting pieces can coincide.
- Both connecting pieces preferably have identical cross-sections; then lines of the same type can be used on both sides of the siphon, which simplifies the manufacture of a household appliance using such a siphon.
- the two nozzles can be shaped in mirror image to one another; enables the use of identical components in the molding tools used for the production of the first and the second component and thus contributes to reducing production costs.
- an outer wall of the housing crossing the cutting plane should enclose a larger cross-section than the connecting pieces.
- the outer wall of the housing, the first and the second wall are preferably arranged circular and concentric to one another. This facilitates the joining of the first and the second component, since there is no need to pay attention to their rotational orientation in relation to the axis.
- an outer wall of the housing crossing the cutting plane is preferably created as part of the first component, and a distal edge of this outer wall is tightly attached to the second component, in particular glued or welded.
- the second component can in particular have a flange oriented transversely to the axis, to the edge of which the distal edge is attached.
- the edge of the flange can be provided with a circumferential recess into which the distal edge of the outer wall engages.
- the first wall is preferably surrounded concentrically by the second wall and is part of the first component.
- the first wall and the outer wall can form an annular channel into which the second wall is immersed in order to achieve the siphon effect.
- the siphon effect can also be achieved in that the second wall is the outer wall of a cup into which the first wall is immersed. Therefore, when installing the siphon it does not matter which of the two connecting pieces is on top and which is on the bottom; as long as the axis is close enough to the vertical, the effectiveness of the siphon is guaranteed in both orientations. This in turn facilitates the installation of the siphon.
- the siphon In order to be effective, the siphon must contain sufficient amounts of liquid at all times. If the siphon in a refrigeration device functions as a pressure compensation between an interior space and the environment, as described above, the liquid supply of the siphon can be regularly replenished with condensation water from an evaporator and should therefore only be large enough to prevent the evaporator from falling dry between two defrosting phases can. So that this requirement is met in every installation orientation, the capacity of the beaker should be between 0.5 and 2 times, preferably between 0.8 and 1.25 times, the capacity of the channel.
- the option of installing the siphon in two orientations can be used to implement different liquid volumes with the same model of siphon for different models of refrigeration devices or to adapt to climatic zones with high and low evaporation.
- the capacity of the cup and channel should differ significantly, e.g. by a factor of at least 1.25, better at least 1.5.
- At least one of the connecting pieces can comprise an inner and an outer pipe section which are concentric to one another. An annular space between the pipe sections can then accommodate the hose or the pipe.
- connection between the hose or pipe and the pipe sections is not always hermetically sealed.
- a distal edge of the outer pipe section should be further away from the plane of the section, i.e. protrude further upwards in the case of an upwardly directed connection piece than a distal edge of the inner pipe section.
- At least one of the components is preferably injection-molded in one piece from plastic.
- At least those surface areas of the siphon that are in constant contact with water during operation can have a lotus effect surface structure in order to to combat the adhesion of biofilm.
- Such a surface structure can be realized inexpensively by injection molding of plastic.
- the invention also relates to a household appliance, in particular a household refrigerator, with a siphon as described above.
- the siphon can have a fastening element for fastening to the inner container.
- the fastening element can in particular be a bayonet coupling for anchoring in a hole in the inner container.
- FIG. 1 shows a schematic section through a refrigeration device with a siphon according to the present invention
- FIG. 3 shows a second component, also sectioned along an axis
- FIG. 5 shows a section through the siphon along the plane V-V from FIG. 4;
- FIG. 6 shows the siphon in a second installation orientation;
- FIG. 8 shows a second siphon with an integrated fastening element.
- 1 schematically shows a section through a household appliance with a body 1 and a door 2 which enclose at least one interior 3.
- the interior 3 is separated in the usual way from a thermal insulation layer 4 of the body 1 by an inner container 5 made of plastic.
- An evaporator 6 cooling the interior can be mounted between the inner container; In the case shown here, the interior is divided by a partition 7 into a storage compartment and a chamber that accommodates the evaporator 6.
- a condensation gutter 8 is formed in the inner container 5.
- a pipeline 9 extends from the condensation water collecting channel 8 through the thermal insulation layer 4 into a machine room 10. There, an evaporation tray 11 that collects the condensation water is mounted on a compressor 12. A siphon 13 is inserted into the pipeline 9.
- FIG. 2 shows a first component 14 of the siphon 13.
- the component 14 is rotationally symmetrical about an axis 15 which runs in the sectional plane of FIG.
- two pipe sections 17, 18 extend concentrically upwards in order to form a first connection piece 19 for the pipe 9.
- the pipe sections 17, 18 are each provided with an insertion bevel 22 at their distal edges 20, 21 in order to facilitate the insertion of the pipe 9 into the space 23.
- the distal edge 20 of the outer pipe section 17 protrudes further than the distal edge 21 of the inner pipe section 18, so that if draining condensation water seeps into the space 23 between an inside of the pipe 9 and the inner pipe section 18, it does not penetrate into the surrounding thermal insulation layer can.
- An outer wall 24 and a first inner wall 25 extend downwardly from the outer and inner edges, respectively, of the annular base plate 16.
- FIG. 3 shows a likewise rotationally symmetrical second component 26 of the siphon 16.
- an outer and an inner pipe section 17, 18 of a second connecting piece 27 extend downward from an annular flange 28.
- a circumferential recess 30 of step-shaped cross-section with an end face 31 and a circumferential face 32 is formed on an upper side of the flange 28.
- Supports 33 extending upward from flange 28 carry a cup 34 with a bottom 35 and a circumferential second inner wall 36.
- FIG. 4 shows the components 14, 26 in a configuration connected to one another along the axis 15 as well as ends of an inner and an outer section 44, 45 of the pipeline 9 to be inserted into the spaces 23 of the connecting pieces 19, 27, and
- FIG. 5 shows a section through the siphon along a perpendicular to the axis 15, designated in Fig. 4 with VV plane.
- a distal edge 37 of the outer wall 24 rests on the end face 31 and in a frictionally engaged manner against the circumferential surface 32.
- the fact that the components 14, 16 are temporarily held together by the frictional connection ensures that an adhesive applied along the recess 30 can reliably and tightly set.
- the components 14, 26 can also be connected by ultrasonic or friction welding, in particular by a rotary oscillation about the axis 15.
- the first inner wall 25 dips from above into the cup 34 and divides its interior into a first cavity 38 surrounded by the first inner wall 25 and an annular second cavity 39 between the walls 25, 36.
- a third cavity 40 which is also annular, extends between the second inner wall 36 and the outer wall 24.
- defrost water enters the cup 34 through a free space 41 delimited by the first connector 19. As soon as it has filled the cup 34 up to a distal edge 42 of the wall 36, excess water passes over the edge 42 and runs over the second cavity 39, passages 29 between the supports 33 and a free space 43 of the connecting piece 27 in the outer section 45 and the evaporation tray.
- the upper side of the flange 28 is flat and perpendicular to the axis 15 in the representation of FIGS. 3 and 4.
- the top can be concave, ie sloping from the edge of the flange to the axis 15.
- the siphon can be mounted in a position rotated by 180 ° with respect to the orientation shown in FIG. 4, ie in an orientation in which the positions of the connecting pieces 19, 27 are interchanged relative to FIG. 4, in this orientation shown in FIG draining water collects in an upwardly open channel 46 of the component 14, which extends around the first cavity 38 and is divided into the second cavity 39 and the annular space 40 by the second annular wall 36, which is immersed from above.
- a seeping out of water along the contact surface between the components 14, 16 is excluded here because the contact surface is above the highest possible water level in the channel 46.
- the diameters and heights of the annular walls 25, 36 and the outer wall 24 can be matched to one another so that the amount of water stored between the distal edges 42 of the wall 36 and 47 of the wall 25, ie the amount of water that is maximally allowed to evaporate before the siphon leaks is the same in the orientations of FIGS. 4 and 5.
- the siphon can be installed without having to pay attention to its orientation.
- the siphon in the orientation of FIG Air throughput for pressure equalization can be built in than in the orientation of FIG. 4, or the siphon can optionally be installed in the same model of refrigeration device in the orientation of FIG. 4 or FIG. 5, depending on whether the device in question is being used is intended in an environment with high or low evaporation or with rare or frequent need for defrosting.
- the bayonet coupling 48 has, surrounded by a skirt 49, which in the assembled state lies tightly against an outside of the wall of the inner container 5, a short cylindrical section 50 and webs 51 protruding radially from the cylindrical section, which lie against an inside of the inner container in the assembled state.
- two webs 51 are provided which allow the siphon 13 to be mounted only with a vertically oriented axis 15 and with a connecting piece 19 that either faces upwards or downwards. An assembly of the siphon 13 in a wrong orientation is excluded.
- the outer wall 24 and the bayonet coupling 48 are connected via two curved struts 53.
- the struts 53 are elastic to a certain extent in order to facilitate assembly with the sections 44, 45 of the pipeline 9, but at the same time stiff enough to withstand permanent deflection by expanding foam during the foaming of the body.
- the freedom of movement of the siphon 13 is here essentially in the direction of the axis 52.
- a single straight strut 54 can be provided between the siphon 13 and the bayonet coupling 48, as shown in FIG.
- the cross-section of the strut 54 which is elongated in the direction of the axis 15, allows the siphon mounted on the inner container 5 a residual freedom of movement essentially only in one direction perpendicular to the axes 15 and 52.
- the strut 49 and the bayonet coupling 48 can be integral components of the component 16.
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)
- Thermally Insulated Containers For Foods (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019213219.7A DE102019213219A1 (de) | 2019-09-02 | 2019-09-02 | Kältegerät und Siphon dafür |
| PCT/EP2020/073180 WO2021043574A1 (de) | 2019-09-02 | 2020-08-19 | Kältegerät und siphon dafür |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4025851A1 true EP4025851A1 (de) | 2022-07-13 |
Family
ID=72148130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20758192.7A Withdrawn EP4025851A1 (de) | 2019-09-02 | 2020-08-19 | Kältegerät und siphon dafür |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20220341650A1 (de) |
| EP (1) | EP4025851A1 (de) |
| CN (1) | CN114341541A (de) |
| DE (1) | DE102019213219A1 (de) |
| WO (1) | WO2021043574A1 (de) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US695311A (en) * | 1901-05-15 | 1902-03-11 | John J Hickey | Waste-water receptacle and discharge-trap for ice-boxes or the like. |
| US2089231A (en) * | 1936-01-20 | 1937-08-10 | Migiel J Uline | Drain fixture for refrigerators |
| US2767558A (en) * | 1955-03-30 | 1956-10-23 | Whirlpool Seeger Corp | Air blast refrigerated cabinet |
| US3120111A (en) * | 1962-05-28 | 1964-02-04 | Gen Motors Corp | Refrigerating apparatus with defrost means |
| JP2725947B2 (ja) * | 1992-05-06 | 1998-03-11 | 三洋電機株式会社 | ショーケース等の排水装置 |
| ATE301811T1 (de) * | 2000-02-25 | 2005-08-15 | Liebherr Hausgeraete | Entwässerungsventil für einen kühl- und/oder gefrierschrank |
| EP1832687B1 (de) | 2006-03-07 | 2013-11-20 | Martha Zimmermann | Leckwassersiphon |
| DE102006018423A1 (de) * | 2006-04-20 | 2007-10-25 | BSH Bosch und Siemens Hausgeräte GmbH | Kältegerät mit einem Kondensatablaufsystem |
| EP3109579B1 (de) | 2015-06-26 | 2019-03-13 | BSH Hausgeräte GmbH | Kältegerät mit drucksensor |
| DE102015219327A1 (de) * | 2015-10-07 | 2017-04-13 | BSH Hausgeräte GmbH | Kältegerät mit Siphon im Kondensatablauf |
-
2019
- 2019-09-02 DE DE102019213219.7A patent/DE102019213219A1/de not_active Withdrawn
-
2020
- 2020-08-19 US US17/639,507 patent/US20220341650A1/en not_active Abandoned
- 2020-08-19 CN CN202080061564.XA patent/CN114341541A/zh active Pending
- 2020-08-19 EP EP20758192.7A patent/EP4025851A1/de not_active Withdrawn
- 2020-08-19 WO PCT/EP2020/073180 patent/WO2021043574A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| CN114341541A (zh) | 2022-04-12 |
| US20220341650A1 (en) | 2022-10-27 |
| DE102019213219A1 (de) | 2021-03-04 |
| WO2021043574A1 (de) | 2021-03-11 |
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