EP2694887A1 - Haushaltskältegerät mit kältemittelrohrleitungen - Google Patents
Haushaltskältegerät mit kältemittelrohrleitungenInfo
- Publication number
- EP2694887A1 EP2694887A1 EP12714628.0A EP12714628A EP2694887A1 EP 2694887 A1 EP2694887 A1 EP 2694887A1 EP 12714628 A EP12714628 A EP 12714628A EP 2694887 A1 EP2694887 A1 EP 2694887A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- section
- pipe
- flow cross
- refrigerant
- widening
- 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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
- F25B5/04—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in series
-
- 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
- F25B2400/00—Component parts or details not otherwise provided for in this subclass
- F25B2400/04—Refrigeration circuit bypassing means
- F25B2400/0409—Refrigeration circuit bypassing means for evaporators
-
- 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
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
- F25D11/022—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures with two or more evaporators
Definitions
- the invention relates to a household refrigerating appliance, comprising at least one heat-insulating inner container with a coolable interior, and designed for cooling the interior refrigerant cycle system comprising at least a compressor, a condenser, and an evaporator, which are connected to form the refrigerant circuit system by refrigerant pipelines, of which at least two refrigerant pipes each have a feed pipe end portion and of which a further refrigerant pipe has a drain pipe end portion into which the two inlet pipe end portions open.
- a refrigerator with a refrigerant circuit system and a heat-insulating housing within which at least two thermally separated cold compartments of different temperature are arranged, each of which is cooled by a corresponding cooling capacity equipped evaporator, wherein for cooling the Serving vaporizing evaporator together in a refrigeration cycle in series connection arranged one behind the other and are supplied by a compressor located in the refrigerant circuit with refrigerant, at the evaporator to generate the lower temperature at least two injection points are provided, each of which a throttle device is connected upstream with a different flow resistance and of each of which is controllable by a deflecting element.
- the object of the invention is to provide a household refrigerator with an improved refrigerant cycle system.
- a household refrigerator comprising at least one heat-insulating inner container with a coolable interior, and designed for cooling the interior refrigerant circuit system having at least a compressor, a condenser, and an evaporator, which is used to form the refrigerant circuit system through refrigerant pipelines are connected, of which at least two refrigerant pipes each have a Zulaufrohr effetsendabterrorism and of which a further refrigerant pipe has a drain pipe end portion into which the two Zulaufrohr effetsendabroughe open, in the at least one of the two inlet pipe end sections has a pipe section that widens in the flow cross-section.
- a refrigerant cycle system generally includes at least one compressor, at least one condenser, and at least one evaporator.
- the refrigerant is initially compressed by the compressor, which heats the refrigerant.
- the compressed, heated refrigerant is cooled in the condenser, wherein it can at least partially pass from a gaseous phase into a liquid phase.
- the liquefied, cooled refrigerant is then supplied to a throttle, which expands the liquefied, cooled refrigerant into an evaporator.
- By relaxing the compressed refrigerant it cools, severely cooling the evaporator and evaporator plates, evaporator fins, coupled to the evaporator.
- the evaporator or the evaporator plates or evaporator plates are coupled to at least one coolable interior, so that this interior is cooled.
- the interior forms a cold room and is used, for example, for frost-free cooling of refrigerated goods, preferably at temperatures between plus 4 and plus 8 degrees Celsius.
- the refrigerator can also be designed as a zero-degree compartment, in particular for keeping fresh fruits or vegetables.
- the interior may form a freezer compartment which generally serves to freeze frozen food at about minus 18 degrees Celsius.
- the household refrigerator may have at least one freezer compartment and at least one cold room.
- the freezer compartment and the refrigerator can each be assigned its own evaporator.
- At least two evaporators may constitute components of a single refrigerant cycle system, in particular a single compressor refrigerant cycle system.
- the components of the refrigerant cycle system in particular compressors, evaporators, condenser and throttles and / or expansion valves are generally connected by refrigerant pipelines.
- one or more branches in the refrigerant cycle system may be necessary.
- a branch can also be formed as an inlet, in which, for example, two or more Zulaufrohr eins- end portion open into a common drain pipe end portion.
- Such a pipe junction or pipe junction can be designed, for example, T-shaped or Y-shaped.
- Capillary tubes can form chokes in refrigerant cycle systems. Capillary tubes are known and commonly used in household refrigeration appliances. Capillary tubes are characterized by a reduced, in particular greatly reduced, flow cross-section compared to the other refrigerant pipelines.
- refrigerant from a particularly thin capillary tube is now introduced or injected into a refrigerant pipeline with a significantly larger flow cross-section in particular, then the refrigerant expands into the refrigerant pipeline, which may lead to undesirable frost spots or unwanted noise developments in the region of the point of introduction.
- the refrigerant gradually relaxes along the pipe section, so that, for example, a high pressure of the refrigerant is reduced more slowly, or gradually.
- a high pressure of the refrigerant is reduced more slowly, or gradually.
- the inlet pipe end section may have between the pipe section which widens in the flow cross section and an outlet end section of the inlet pipe end section or a pipe connecting sleeve, a flow cross section course which is free from constriction, in particular constant or even increasing.
- the feed pipe can, for example, have a flow cross-section or inside diameter that is constant over its longitudinal course. In the vicinity of the feed pipe line end section, this constant flow cross section or inner diameter can expand to a larger flow cross section or inner diameter. In the simplest case, this extension can take place suddenly at a discrete point, as it were, or can take place continuously over a distance. In all embodiments, therefore, the pipe section widening in the flow cross-section can be continuous, in particular conically widening.
- a pipe section with a constriction-free, in particular constant or even increasing flow cross-sectional profile can follow the flow section widening in the flow cross-section, in particular before an exit-side front end of the inlet pipe end section is reached.
- a pipe section with a cross-sectional widening can follow the constant small, in particular capillary flow cross-section, and then another pipe section with a particularly constant enlarged flow cross-section can join the pipe section before this pipe arrangement opens into the outlet pipe end section.
- the pipe section with a constant small, in particular capillary flow cross-section, the pipe section with the cross-sectional widening and the pipe section with the particularly constant enlarged flow cross section can be formed by forming on a one-piece Zulaufrohr Obersendab- cut, or composed of individual separate pipe sections, for example by soldering. In such a pipe arrangement, however, flow cross-section reductions, in particular constrictions in the flow direction of the refrigerant, should at least substantially be avoided, if not completely excluded.
- the pipe section widening in the flow cross-section can be made widening up to a constant outflow cross-section, in particular an outflow cross-section corresponding to the outflow cross-section of the other inlet pipe end section.
- the two feed pipe end sections can have the same or at least approximately the same flow cross section at their respective front ends.
- the pipe section widening in the flow cross section can have a circular flow cross section.
- a hollow-cylindrical, in particular hollow circular-cylindrical end pipe section can adjoin the pipe section widening in the flow cross-section. All tube sections can form both an at least approximately equal wall thickness have a circular inner wall cross section and a circular outer wall cross-section.
- the pipe section widening in the flow cross section may be formed, for example, on a separate pipe connection sleeve which is fastened, in particular soldered, to the inlet pipe line end section. In other words, this may mean that an intermediate pipe piece is inserted between the actual feed pipe end section and the discharge pipe end section.
- the intermediate pipe section may have the pipe section widening in the flow cross section and / or the hollow cylindrical, in particular hollow circular cylindrical end pipe section of constant flow cross section.
- the pipe section widening in the flow cross-section can be aligned coaxially with the feed pipe end section. This means that at least substantially the same, and in particular the largest possible, distance from the inner walls of the pipe section widening in the flow cross-section exits the end face of the particular capillary feed pipe end section.
- the inlet pipe end section can be formed, for example, by a capillary, which is adjoined by the pipe section widening in the flow cross section, in particular to which capillary a tube section of a pipe connection sleeve can be connected, which has the pipe section widening in the flow cross section.
- the tube section can alseisen a uniform inner diameter, which is substantially equal to or only slightly larger than the outer diameter of the capillary.
- an end portion of the capillary can be prefixed by simply inserting it into the tube section on the tube coupling sleeve. By such prefixing the capillary can be easily connected to the pipe connection sleeve, in particular soldered or glued.
- the depth can also be set by which the capillary should project into the pipe connection sleeve, in particular into the pipe section widening in the flow cross section.
- the capillary can thus protrude within the pipe connection sleeve into the conically expanding pipe section.
- exit end face The capillary of the inner wall diameter so not continuously into the widening in the flow cross-section pipe section, but has a jump.
- different flow conditions can be adjusted.
- the flow conditions during assembly of household refrigerators can be optimally adjusted or adjusted.
- the two Zulaufrohr einsendabitese can be used parallel to each other in the drain pipe end portion.
- the refrigerant enters from at least approximately the same direction into the drain pipe end section.
- a flow deflection from the inlet pipe end sections into the downcomer end section is minimized.
- the downcomer end section may be axially aligned in a direction parallel to the axial extent of the downcomer duct end sections. As a result, refrigerant enters the downcomer end portion from at least approximately the same direction. In addition, a flow deflection from the Zulaufrohr Arthursendablieen is reduced to the drain pipe end portion to a minimum.
- the drain pipe end section may have a particularly constant flow cross-section, which is at least not substantially reduced, in particular equal to or even greater, in comparison with the sum of the individual flow exit cross-sections of the inlet pipe end sections.
- a refrigerant cycle system of a household refrigeration appliance can be improved in particular with regard to injection and flow noise.
- the refrigeration cycle system according to the invention can be used in particular for cooling of freezer rooms and in fridge / freezer combination devices.
- a capillary tube can be inserted into a tube coming from a refrigerating compartment immediately before the freezer. merge.
- the refrigerant cycle system can be connected so that refrigerant is injected either in the refrigerator compartment with downstream freezer or directly into the freezer.
- a tube enclosing the capillary in the course of the capillary tube which then widens conically, can be inserted into a specially shaped Y-piece into which the connecting tube can then open.
- the capillary tube can be located centrally in the injection tube.
- the flow cross sections are not reduced in advantageous embodiments by the Y-piece and also the flow direction is not significantly deflected. Also in the connecting pipe, the flow cross sections in the course in the flow direction can not be significantly reduced. As a result, sometimes homogeneous flow conditions can be achieved and consequently flow noise can be reduced.
- the capillary tube can be arranged centrally in the middle of the tube, so that the injection of the refrigerant does not take place in the vicinity of the inner wall of the injection tube, which could, for example, lead to negative detachment effects, which could be associated with noise. Furthermore, in a cylindrical gap between capillary tube and injection tube, the penetration depth of a solder and / or the position of the capillary can be better adjusted and made stable in terms of manufacturing technology. Further features and advantages of the household refrigerating appliance according to the invention may be apparent from the following description of an exemplary embodiment with reference to the accompanying figures. Concrete features of this embodiment may represent general features of the invention.
- FIG. 1 is a perspective view of an exemplary domestic refrigerator with a refrigerant cycle system; a schematic representation of a refrigerant circuit system according to the invention with refrigerant pipelines; a perspective view of an inner container of the exemplary household refrigerator with a Y-shaped convergence in the refrigerant cycle system; a perspective view of the Y-shaped convergence with a type of pipe connection sleeve; a cross-sectional view of a capillary Zulaufrohr einsendabterrorisms which is connected to the pipe connection sleeve.
- a household refrigerating appliance 1 shown by way of example in FIG. 1 has a body 2 with an inner container 3.
- the inner container 3 is divided into a freezer compartment 4 arranged at the top and a cooling compartment 5 arranged at the bottom.
- the freezer compartment 4 is generally used for freezing frozen food at about minus 18 degrees Celsius.
- the freezer compartment 4 is associated with a first evaporator 6, which is arranged behind a freezer compartment rear wall 7.
- the freezer compartment 4 is accessible when the freezer compartment door 9 is open. To open, the freezer compartment door 9 has a first handle 10.
- the cooling space 5 is generally used for frost-free cooling of refrigerated goods, preferably at temperatures between plus 4 and plus 8 degrees Celsius. However, the cooling space 5 can also be designed as a zero-degree compartment, in particular for keeping fruit or vegetables fresh.
- the refrigerator compartment 5 has a rear wall 11, behind which the first evaporator 6 for the freezer compartment 4 is arranged.
- a second evaporator 12 serves to cool the cooling space 5.
- the cooling space 5 is accessible when the refrigerator door 14 is open. To open the refrigerator door 14 has a second handle 15.
- a single evaporator, or the first evaporator 6 and the second evaporator 12, or any number of evaporators may be connected to a compressor 8.
- the compressor 8 is inserted from the back, ie behind the rear wall 1 1 of the refrigeration device 1 in a machine room 13 of the housing 16.
- FIG. 2 an exemplary embodiment of a refrigerant circuit system 17 is shown schematically.
- the refrigerant cycle system 17 has a compressor 8, a condenser 19, and a first evaporator 6 and a second evaporator 12.
- Each evaporator 6, 12 may be upstream of a first uncontrolled expansion valve 18, for example as a throttle 18a and a second uncontrolled expansion valve 18, for example as a throttle 18b.
- the compressor 8, the condenser 19, the evaporator 6, 12 and the throttles 18a, 18b are fluidly connected via refrigerant pipelines 20, as shown in Fig. 2.
- the refrigerant is supplied in the illustrated embodiment via a refrigerant pipe 20.2 a switching device 21. Via the switching device 21, the refrigerant is supplied either via a refrigerant pipe 20.3 and via a throttle 18a to the first evaporator 6 or via a different refrigerant pipe 20.4 and a second throttle 18b supplied to the second evaporator 12.
- the first evaporator 6 may, for example, be coupled to the cooling space 5 and the second evaporator 12 may be coupled to the freezing space 4 by refrigeration.
- a first operating mode in which the refrigerant is supplied by the switching device 21 via the refrigerant pipe 20.3 and the throttle 18a to the first evaporator 6, first the cooling chamber 5 and connected in series, fed via the refrigerant pipe 20.6 the second evaporator 12, which is cold-coupled to the freezer compartment 4.
- the cooling chamber 5 and then the freezer compartment 4 is cooled by the refrigerant.
- a second operating mode only the freezer compartment 4 and not the refrigerator compartment 5 is cooled.
- the refrigerant pipelines 20.5 and 20.6 are fed to a common refrigerant piping 20.7.
- the refrigerant pipe 20.6 has in the exemplary embodiment a Zulaufrohrönsend- section 20a and the refrigerant pipe 20.5 an inlet pipe end portion 20b.
- the two inlet pipe end sections 20a and 20b open into an outlet pipe end section 20c of the coolant pipe 20.7.
- the Zulaufrohr effetsendabterrorisme 20 a, 20 b and the mecanicrohrlei- end section 20 c are shown enlarged.
- FIG 3 shows a perspective cutout of the inner container 3 with the coolable inner chambers, ie the freezer compartment 4 and the cooling compartment 5.
- the supply conduit end section 20b is designed as a capillary 22 in the exemplary embodiment shown.
- FIGS. 4a and 4b show in greater detail by way of example how the inlet pipe end section 20b has a pipe section 30 which widens in the flow cross section.
- the feed pipe end section 20b is formed by a capillary 22, to which the pipe section 30 widening in the flow cross-section adjoins.
- the pipe section 30 may be part of a pipe connection sleeve 31 having a tube section 32.
- the capillary 22 is inserted into the tube portion 32 and connected thereto.
- the tube section 32 then in turn opens into the tube section 30 which widens in the flow cross-section.
- the expanding in the flow cross-section pipe section 30 is also formed conically widening.
- the feed pipe end section 20 b can have an end pipe section 34 with a flow cross-sectional course without constriction, in particular constant or even increasing, between the pipe section 30 widening in the flow cross section and an exit-side front end 33 of the feed pipe end section 20 b.
- the pipe section 30 widening in the flow cross section is designed to widen up to a constant outflow cross section of the end pipe section 34.
- the outflow cross section of the end pipe section 34 can be a the Ausströmquerites of have another outflow cross-section corresponding to another feed pipe end section 20a.
- the pipe section 30 widening in the flow cross section has a circular flow cross section.
- the pipe section 30, which widens in the flow cross-section, is adjoined by a hollow circular-cylindrical end pipe section 34.
- the flow section widening pipe section 30 is formed on the separate pipe connection sleeve 31.
- the pipe connection sleeve 31 is attached to the feed pipe end portion 20b and to the capillary 22, in particular soldered.
- the pipe section 30 widening in the flow cross-section is aligned coaxially with the feed pipe end section 20b or with the capillary 22.
- the capillary 22 protrudes inside the pipe connection sleeve 31 into the conically widening pipe section 30.
- the two feed pipe end sections 20a and 20b are inserted parallel to one another into the discharge pipe end section 20c.
- the drain pipe end portion 20c is arranged axially aligned in a direction parallel to the axial extent of the Zulaufrohr Obersendabête 20a and 20b direction.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201110006856 DE102011006856A1 (de) | 2011-04-06 | 2011-04-06 | Haushaltskältegerät mit Kältemittelrohrleitungen |
| PCT/EP2012/055930 WO2012136612A1 (de) | 2011-04-06 | 2012-04-02 | Haushaltskältegerät mit kältemittelrohrleitungen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2694887A1 true EP2694887A1 (de) | 2014-02-12 |
| EP2694887B1 EP2694887B1 (de) | 2015-01-21 |
Family
ID=45974283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP12714628.0A Active EP2694887B1 (de) | 2011-04-06 | 2012-04-02 | Haushaltskältegerät mit kältemittelrohrleitungen |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2694887B1 (de) |
| CN (1) | CN103459943A (de) |
| DE (1) | DE102011006856A1 (de) |
| WO (1) | WO2012136612A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102014001886A1 (de) * | 2013-11-25 | 2015-06-11 | Liebherr-Hausgeräte Ochsenhausen GmbH | Optimierte Zwischeneinspritzstelle |
| JP2016136082A (ja) * | 2015-01-05 | 2016-07-28 | 三星電子株式会社Samsung Electronics Co.,Ltd. | 冷却装置 |
| DE102018213671A1 (de) * | 2018-08-14 | 2020-02-20 | BSH Hausgeräte GmbH | Haushaltskältegerät |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1171529A (zh) * | 1996-07-18 | 1998-01-28 | 长岭(集团)股份有限公司 | 消声器 |
| US6370908B1 (en) * | 1996-11-05 | 2002-04-16 | Tes Technology, Inc. | Dual evaporator refrigeration unit and thermal energy storage unit therefore |
| DE19756861A1 (de) | 1997-12-19 | 1999-06-24 | Bosch Siemens Hausgeraete | Kältegerät |
| US6931870B2 (en) * | 2002-12-04 | 2005-08-23 | Samsung Electronics Co., Ltd. | Time division multi-cycle type cooling apparatus and method for controlling the same |
| CN1332161C (zh) * | 2005-12-09 | 2007-08-15 | 刘益才 | 电冰箱消声器 |
| DE102006061091A1 (de) * | 2006-12-22 | 2008-06-26 | BSH Bosch und Siemens Hausgeräte GmbH | Kühlmöbel mit wenigstens zwei thermisch voneinander getrennten Fächern |
-
2011
- 2011-04-06 DE DE201110006856 patent/DE102011006856A1/de not_active Withdrawn
-
2012
- 2012-04-02 EP EP12714628.0A patent/EP2694887B1/de active Active
- 2012-04-02 CN CN2012800164265A patent/CN103459943A/zh active Pending
- 2012-04-02 WO PCT/EP2012/055930 patent/WO2012136612A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2012136612A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2694887B1 (de) | 2015-01-21 |
| DE102011006856A1 (de) | 2012-10-11 |
| WO2012136612A1 (de) | 2012-10-11 |
| CN103459943A (zh) | 2013-12-18 |
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