EP2247901A1 - Kältegerät mit einem verdampfer - Google Patents
Kältegerät mit einem verdampferInfo
- Publication number
- EP2247901A1 EP2247901A1 EP09714230A EP09714230A EP2247901A1 EP 2247901 A1 EP2247901 A1 EP 2247901A1 EP 09714230 A EP09714230 A EP 09714230A EP 09714230 A EP09714230 A EP 09714230A EP 2247901 A1 EP2247901 A1 EP 2247901A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- channel
- evaporator
- sub
- vertically extending
- refrigerant
- 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- Withdrawn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
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/02—Evaporators
- F25B39/028—Evaporators having distributing means
-
- 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
- F25B2339/00—Details of evaporators; Details of condensers
- F25B2339/02—Details of evaporators
- F25B2339/022—Evaporators constructed from a pair of plates forming a space in which is located a refrigerant carrying coil
-
- 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
- F25D23/061—Walls with conduit means
Definitions
- the invention relates to a refrigerator with an evaporator.
- Refrigerating appliances such as Refrigerators or freezers evacuate a room with a low temperature level, e.g. the interior of the refrigerating appliance, heat, to this to a room with a higher temperature level, e.g. the space surrounding the refrigerator to surrender.
- a refrigeration cycle comprising an evaporator.
- a refrigerant flows, which heats the evaporator in the liquid state under low pressure, whereby the refrigerant evaporates.
- the refrigerant is injected with a relatively high proportion of liquid into one of the ends of the evaporator and sucked from another end of the evaporator. Due to pressure losses in a tube-like evaporator, the charging of the refrigerant spreads relatively slowly in time, whereby the evaporator pressure is lowered. This leads to an increased workload of a compressor of the refrigeration cycle, which increases the energy consumption of the refrigeration cycle.
- WO 90/01659 discloses a vertically oriented evaporator having a plurality of parallel channels leading refrigerant from top to bottom.
- Object of the present invention is to provide a refrigeration device with an evaporator having a refrigeration cycle, which absorbs less energy.
- a refrigeration device comprising a housing limiting a cold room and a refrigeration cycle with a planar evaporator, which is arranged vertically within the cold room or in or on the housing and having a plurality of juxtaposed first vertically extending channels with lower and upper ends , And the refrigeration cycle is performed such that the first vertical channels of the evaporator refrigerant of the refrigeration cycle from their lower ends to their upper ends. Due to the flow of the refrigerant through the first channels from bottom to top, the refrigerant can on the individual Distribute channels of the first vertical channels better, which improves the operation of the evaporator.
- its evaporator which according to one variant can be manufactured in particular by means of roll bonding technology, has an inlet arranged in an upper region of the evaporator for injecting the refrigerant and a first duct which carries the refrigerant from the upper region to the lower ends the first vertical channels leads.
- the refrigerant injected into the evaporator first cools the upper area of the evaporator and is subsequently cooled by the first passage, e.g. can be performed tube-like, led to the lower ends of the first vertically extending channels.
- the lower ends of the first vertically extending channels are arranged in the lower region of the evaporator, so that the refrigerant is at least partially also guided by gravity via the first channel to the lower ends of the first vertically extending channels.
- the first channel can be arranged in the upper region of the evaporator, in particular horizontally extending first sub-channel, a subsequent to the first sub-channel and in particular vertically extending second sub-channel, which leads the refrigerant from the upper region to a lower region of the evaporator, and one to the second sub-channel have subsequent and in particular horizontally extending third sub-channel.
- the first subchannel is coupled to the inlet of the evaporator or has the inlet at one of its ends.
- the first subchannel may e.g.
- the inlet is disposed in an area laterally of the first vertically extending channels and the first sub-channel, the injected refrigerant above the first vertically extending channels on the opposite side of the first vertically extending channels before the particular vertically extending second sub-channel the Refrigerant from the upper region in the lower portion of the evaporator leads to then pass through the third part of the channel to the lower ends of the first vertically extending channels.
- the evaporator comprises a particular horizontally extending second channel, which is above the first vertically extending channels and is connected at one of its ends to the inlet at least indirectly or the inlet, and a plurality of juxtaposed second vertically extending channels, with their lower ends to the second channel and with their upper ends with the formed as a collecting channel first sub-channel of the first channel are connected.
- the second vertically extending channels are arranged above the first vertically extending channels, ie in the upper region of the evaporator.
- the first vertically extending channels can be significantly longer than the second vertically extending channels.
- the refrigerant injected into the evaporator first cools the upper portion of the evaporator before reaching the lower ends of the first vertically extending channels. This results in a more uniform cooling effect of the evaporator.
- the evaporator has a third channel which extends in particular horizontally above the third subchannel and has a third channel, in particular centrally connected to the lower ends of the first vertically extending channels.
- the third channel distributes the refrigerant originating from the first channel and in particular from the third sub-channel of the first channel to the first vertically extending channels in the lower region of the evaporator.
- the preferred central connection of the third sub-channel to the third channel results in a more uniform cooling distribution of the refrigerant at the lower ends of the first vertically extending channels, whereby the cooling properties of the evaporator are improved.
- the evaporator has a collecting duct which extends in the upper region of the evaporator and in particular horizontally and which is connected to the upper ends of the first vertically extending ducts in order to receive the refrigerant guided through the first vertically extending ducts and during operation of the refrigerator according to the invention to lead to an outlet of the evaporator.
- the outlet may in particular be arranged on the same side as the inlet. This can be the connection of the evaporator to the
- the evaporator may have a fourth channel extending above the collecting channel, in particular horizontally, which is connected at one of its two ends to one of the ends of the collecting channel and at its other end to the other end of the collecting channel and which leads the refrigerant to the outlet during operation of the refrigerating device.
- the collecting channel and the fourth channel can run directly one above the other in parallel alignment and have the same lengths.
- the evaporator can also have a fifth channel which is arranged above the collecting channel and in particular runs horizontally and coupled to the outlet, which is connected in particular centrally to the busbar or in particular centrally to the third channel.
- FIG. 2 shows an evaporator of the household refrigerator shown in FIG. 1,
- Fig. 3 shows an alternative embodiment of an evaporator for the domestic refrigerator shown in FIG. 1 and
- FIG. 4 shows a further embodiment of an evaporator for the one shown in FIG.
- Fig. 1 shows a household refrigerator 1 as an example of a refrigerator.
- the household refrigerator 1 has a housing 2 with a rear wall 3, two side walls 4 and a partition wall 5, within which a freezer compartment 6 and a refrigerator 7 are arranged.
- the freezer compartment 6 is separated from the refrigerator compartment 7 by the partition wall 5.
- the household refrigerator 1 further includes a door 8 hinged to the housing 2 for closing the freezer compartment 6 and a door 2 hinged to the housing 2 for closing the refrigerator compartment 7.
- the household refrigerator 1 further comprises a vegetable bowl 1 1 arranged in the lower region of the interior of the refrigerator compartment 7, which is covered with a plate 12. In the area of the plate 12 and the rear wall 3, a condensation drainage channel 13 is arranged.
- the household refrigerator 1 also has a temperature selector 14 with interior lighting, with which the target temperature of the cooling chamber 7 can be adjusted.
- three stacked door racks 16 are arranged on the inner wall 15 of the door 9 of the cooling chamber 7.
- the household refrigerator 1 further comprises a Käteniklauf for cooling the freezer compartment 6 and the refrigerator compartment 7, the u.A. an evaporator 21 shown in more detail in FIG. 2, which is provided in the case of the present embodiment for cooling the freezer compartment 6.
- a Käteniklauf for cooling the freezer compartment 6 and the refrigerator compartment 7, the u.A. an evaporator 21 shown in more detail in FIG. 2, which is provided in the case of the present embodiment for cooling the freezer compartment 6.
- Other necessary components of the refrigeration cycle such as a compressor or a condenser are known in the art as such and therefore not shown in detail in the figures.
- the cooling space 7 is also cooled by an evaporator, which may be made similar to the evaporator 21 of the freezer compartment 6.
- the freezer compartment 6 and the cooling compartment 7 are each cooled by a separate refrigeration circuit, e.g. each having an evaporator similar to the evaporator 21 shown in FIG.
- the evaporator 21 is arranged in or on the rear wall 3 of the freezer compartment 6 and was manufactured by means of roll bonding technology. However, other manufacturing methods are also conceivable. It is also possible that the evaporator 21 is arranged in or on one of the side walls 4 or vertically aligned within the freezer compartment 6. If an evaporator similar to the evaporator 21 shown in FIG. 2 is used for the cooling space 7, then this is likewise in or arranged on the rear wall 3 of the cooling space 7, in or on one of the side walls 4 of the cooling space 7 or vertically aligned within the cooling space 7.
- the evaporator 21 shown in Fig. 2 has a channel 22 with an inlet 23, e.g. connected to the condenser of the refrigeration cycle.
- the channel 22 is e.g. a tube and, in the case of the present embodiment, a first sub-channel 24, a second sub-channel 25 adjoining the first sub-channel 24 and a third sub-channel 26 adjoining the second sub-channel 25.
- the first sub-channel 24 runs horizontally along the rear wall 3 of the freezer compartment 6 and comprises the inlet 23 of the channel 22.
- the second sub-channel 25 adjoining the first sub-channel 24 extends vertically along the rear wall 3 of the freezer compartment 6 to a lower region of the evaporator 21 and the third sub-channel 26 adjoining the second sub-channel 25 again runs horizontally along the rear wall 3 of the freezer compartment 6 in the lower Area of the evaporator 21.
- the evaporator 21 further comprises a plurality of parallel channels 27 extending along the rear wall 3 of the freezer compartment 6 in the vertical direction and a collecting duct 28 extending horizontally along the rear wall 3 of the freezer compartment 6 and arranged in the upper region of the evaporator 21.
- the parallel channels 27 are connected at their lower ends to the third sub-channel 26 and at their upper ends to the collecting channel 28.
- the collection channel 28 also has an outlet 29.
- a refrigerant of the refrigeration cycle is injected into the inlet 23 of the evaporator 21, that is to say into an upper area of the evaporator 21 in the direction of an arrow a in order to cool the evaporator 21 in this area.
- the first sub-channel 24 leads the refrigerant in the direction of the arrow a horizontally to the second sub-channel 25, which then leads the refrigerant vertically downward in the direction of an arrow b in the lower region of the evaporator 21.
- the refrigerant passes into the arranged in the lower region of the evaporator 21 third sub-channel 26, from there via the parallel channels 27 in the direction of an arrow c back up into the arranged in the upper region of the evaporator 21 collecting channel 28th to be led. Finally, the refrigerant leaves the evaporator 21 via the arranged in the upper region of the evaporator 21 and the collecting duct 28 arranged outlet 29 in the direction of an arrow d.
- FIG. 3 shows an alternative embodiment of an evaporator 31 which can be used instead of the evaporator 21 for the household refrigerator 1.
- the evaporator 31 shown in FIG. 3 has, similar to the evaporator 21 shown in FIG. 2, a channel 32 which has a first part channel 34, a second part channel 35 adjoining the first part channel 34 and a third part channel 36 adjoining the second part channel 35 includes.
- the channel 32 is for example a tube
- the evaporator 31 has been e.g. manufactured by roll bonding technique
- the first sub-channel 32 runs e.g. horizontally along the rear wall 3 of the freezer compartment 6 in the upper region of the evaporator 31
- the third partial channel 36 extends horizontally, e.g. along the rear wall 3 of the freezer compartment 6 in the lower region of the evaporator 31
- the second partial channel 35 extends vertically e.g. along the rear wall 3 of the freezer compartment 6.
- the evaporator 31 further comprises, similar to the evaporator 21 shown in FIG. 2, a plurality of parallel channels 37 extending along the rear wall 3 of the freezer compartment 6 in the vertical direction and a collecting channel 38 arranged horizontally in the upper region of the evaporator 31 along the rear wall 3 of the freezer compartment 6 on.
- the parallel channels 37 are connected at their lower ends to the third sub-channel 36 and at their upper ends to the collecting channel 38.
- the collecting channel 38 also has an outlet 39.
- the evaporator 31 comprises a further in the upper region of the evaporator 31 horizontally along the rear wall 3 of the freezer compartment 6 extending channel 40 having the inlet 33 of the evaporator 31, and further along the rear wall 3 of the freezer compartment 6 in the vertical direction extending parallel channels 42.
- the other parallel channels 42 are connected at their lower ends to the further channel 40 and at their upper ends to the first sub-channel 34.
- the further channel 40 extends below the first sub-channel 34, which is designed in the case of the present embodiment as a collecting channel.
- the further parallel channels 42 are arranged in the upper region of the evaporator 31 and substantially shorter than the parallel channels 37.
- the refrigerant of the refrigeration cycle is injected into the inlet 33 of the evaporator 31, ie also in the upper region of the evaporator 31 in the direction of an arrow a 'in order to cool the evaporator 31 in this area.
- the refrigerant is then guided from the channel 40 via the further parallel channels 42 vertically upward in the direction of an arrow e in the first sub-channel 34 designed as a collecting channel.
- the second sub-channel 35 leads the refrigerant in the direction of an arrow b 'vertically into the lower region of the evaporator 31.
- the refrigerant enters the third sub-channel 36, from there via the parallel channels 37 in the direction of Arrow c 'again in the arranged in the upper region of the evaporator 31 collecting channel 38 to be performed. Finally, the refrigerant leaves the evaporator 31 via the outlet 39 in the direction of an arrow d '.
- FIG. 4 shows a further evaporator 41 which can be used instead of the evaporators 21, 31 for cooling the freezer compartment 6 and / or the refrigerator compartment 7 of the household refrigerator 1.
- components of the evaporator 41 shown in FIG. 4 which are substantially identical in construction and function to components of the evaporator 31 shown in FIG. 3, are given the same reference numerals.
- the evaporator 41 shown in FIG. 4 differs essentially from the evaporator 31 shown in FIG. 3 through three further channels 43-45.
- One of these further channels 43 is arranged in the lower region of the evaporator 41 and is connected both to the third sub-channel 36 of the channel 32 and to the lower ends of the parallel channels 37.
- the channel 43 extends horizontally, for example, along the rear wall 3 of the freezer compartment 6 slightly above the third sub-channel 36.
- the third sub-channel 36 is connected centrally to the channel 43, so that the channel 43 improves the originating from the third sub-channel 36 refrigerant the parallel channels 37 can conduct.
- the collecting channel 38 connected to the upper ends of the parallel channels 37 in the upper region of the evaporator 41 does not have the outlet 39 of the evaporator 41, but has its two ends connected to the two ends of above the collecting channel 38 also horizontally extending channel 44.
- On the channel 44 of above this channel 44 also horizontally extending channel 45 is connected centrally.
- the channel 45 has the outlet 39 of the evaporator 41, through which the refrigerant leaves the evaporator 41 in the direction of the arrow d 'during operation of the household refrigerator 1.
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 |
|---|---|---|---|
| DE200810011021 DE102008011021A1 (de) | 2008-02-25 | 2008-02-25 | Kältegerät mit einem Verdampfer |
| PCT/EP2009/052115 WO2009106504A1 (de) | 2008-02-25 | 2009-02-23 | Kältegerät mit einem verdampfer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2247901A1 true EP2247901A1 (de) | 2010-11-10 |
Family
ID=40600224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09714230A Withdrawn EP2247901A1 (de) | 2008-02-25 | 2009-02-23 | Kältegerät mit einem verdampfer |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2247901A1 (de) |
| CN (1) | CN101960237A (de) |
| DE (1) | DE102008011021A1 (de) |
| RU (1) | RU2010136858A (de) |
| WO (1) | WO2009106504A1 (de) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1075645B (de) * | 1960-02-18 | LICENTIA Patent Verwaltungs GmbH Frankfurt/M | Tiefkuhltruhe mit getrenntem Getrier und Lagerfach | |
| WO1990001659A1 (en) | 1988-08-15 | 1990-02-22 | Siddons Ramset Limited | Evaporator plate |
| JP2001050613A (ja) * | 1999-08-10 | 2001-02-23 | Daikin Ind Ltd | 冷媒分配器 |
| GB2421457A (en) * | 2004-12-22 | 2006-06-28 | T I Group Automotive Systems L | A heat exchanger |
-
2008
- 2008-02-25 DE DE200810011021 patent/DE102008011021A1/de not_active Ceased
-
2009
- 2009-02-23 CN CN2009801063170A patent/CN101960237A/zh active Pending
- 2009-02-23 RU RU2010136858/06A patent/RU2010136858A/ru not_active Application Discontinuation
- 2009-02-23 EP EP09714230A patent/EP2247901A1/de not_active Withdrawn
- 2009-02-23 WO PCT/EP2009/052115 patent/WO2009106504A1/de not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2009106504A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102008011021A1 (de) | 2009-08-27 |
| WO2009106504A1 (de) | 2009-09-03 |
| CN101960237A (zh) | 2011-01-26 |
| RU2010136858A (ru) | 2012-04-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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| 17P | Request for examination filed |
Effective date: 20100927 |
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| AK | Designated contracting states |
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| AX | Request for extension of the european patent |
Extension state: AL BA RS |
|
| DAX | Request for extension of the european patent (deleted) | ||
| 17Q | First examination report despatched |
Effective date: 20110519 |
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| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
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| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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| 18D | Application deemed to be withdrawn |
Effective date: 20121212 |