CN101410679A - 具有管式蒸发器的制冷装置 - Google Patents
具有管式蒸发器的制冷装置 Download PDFInfo
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- 239000002826 coolant Substances 0.000 abstract description 3
- 238000011144 upstream manufacturing Methods 0.000 description 8
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- 238000005057 refrigeration Methods 0.000 description 2
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
- F28D1/0477—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
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- 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
- F25B39/022—Evaporators with plate-like or laminated elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/14—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
- F28F1/22—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally the means having portions engaging further tubular elements
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- 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
- F25B2339/023—Evaporators consisting of one or several sheets on one face of which is fixed a refrigerant carrying coil
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- 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
- F25B2500/01—Geometry problems, e.g. for reducing size
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- 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
- F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
- F25B43/006—Accumulators
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- 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
Abstract
本发明涉及制冷装置,包括管式蒸发器(3),所述管式蒸发器借助于抽吸管线(6)连接至压缩机(4)。管式蒸发器的制冷管形成多个串联的管环路(9)以及一个上行出口管(13),所述出口管将最下游的管环路(9)连接至所述抽吸管线(6)。所述管环路(9)在至少一距离内具有沿制冷剂流动方向的上行路径,所述距离至少对应于出口管(13)的长度。
Description
技术领域
本发明涉及制冷装置,其中内部制冷舱室通过管式蒸发器被冷却,通过压缩机循环的制冷剂流经所述管式蒸发器,并且所述管式蒸发器包括承载板以及设置成与其接触从而导热的管道。管式蒸发器与内部制冷舱室紧密热学接触,并且通过绝缘层与环境热学屏蔽。压缩机设置在绝缘层外侧,并且以环境温度将压缩的制冷剂供应至蒸发器。在制冷剂经过蒸发器的节流点(choke point)时,制冷剂被释放至低压,这将制冷剂的沸点温度减小至正好低于环境温度的值。由此导致的制冷剂的蒸发使得内部舱室冷却降温。气态制冷剂经由抽吸管线从压缩机被抽出。
背景技术
利用Rollbond蒸发器,其大体上由结合在一起的两个金属板构成,在一个金属板中设有螺旋冷却剂管线,大体上收集器靠近冷却管线的下游端部在蒸发器中形成,所述收集器在压缩机的空转过程中收集未蒸发的制冷剂并且在这种情况中防止制冷剂从蒸发器排出并防止通过制冷剂在管线上游进一步蒸发而进入抽吸管线中。为了提供用于管式蒸发器的这种收集器也是复杂的和昂贵的,因为为此,必须紧密地将具有不同内部宽度的多个管区段连接在一起。除此以外,利用传统的管式蒸发器,上行出口管经常直接设置在抽吸管的上游。尽管该出口管并不完全充满液体制冷剂,从而气态制冷剂可在上游从出口管的下端进入,但是气态制冷剂的气泡可以上升通过任何可能预设在管中的液体制冷剂。然而,如果在蒸发器下游端部收集的制冷剂的量大于出口管容纳其的能力,则液体制冷剂进入抽吸管线并在绝缘层外侧冷却该管线。在一方面,该导致了制冷装置的低热学效率,在另一方面,沉积在抽吸管的外侧上的冷凝水可以导致对于设备的损害或者可以渗入到绝缘层中并因而负面地影响其绝缘性能。为了消除该损害,制冷装置的制冷回路中的制冷剂的量目前被限制,从而防止收集足够的制冷剂,从而使得出口管溢流。然而,这种限制还可以负面地影响制冷装置的效率。
发明内容
本发明的目的是提供一种制冷装置,其具有管式蒸发器,其中尽管充满大量气态制冷剂,但是避免了出口管溢流的危险。
本发明通过一种具有管式蒸发器的制冷装置实现该目的,管式蒸发器经由抽吸管线连接至压缩机,并且制冷剂管形成多个串联的管环路以及上行出口管,所述上行出口管将位于最下游的管环路中的环路连接至抽吸管线,并非是各个管环路的传统的水平延伸的直管区段,在预定长度内设置沿制冷剂的流动方向的管环路的上行路径,而管环路的预定长度与其流横截面结合形成缓冲容积,通过所述缓冲容积防止液体制冷剂溢流进入出口管。每个具有上行路径的管环路区段可储存液体制冷剂,并同时使得驱动其流动的气态制冷剂扫过离开液体或通过液体起泡,从而液体制冷剂仍被捕获在上行区段中,并且并不达到出口管。这显著增加了管式蒸发器度对于液体制冷剂的储存能力,并且相应地减小了液体制冷剂排入抽吸管线中的危险。
由于管环路和出口管的相同流经横截面,针对管环路特别有利的是,在至少与出口管的长度对应的长度内,具有沿制冷剂流动方向的上行路径。
如果每个管环路以公知的方式设有两个直管区段,其中所述直管区段通过一个弯曲区段相连,则根据第一实施例,位于最下游的一组管环路的直区段以一角度彼此相互平行。这意味着,在每个环路的两个平行的直管区段中,一个处于储存液体制冷剂的位置。
优选地,所述组中的每个管环路的两个直区段中的位于下游的区段具有沿制冷剂的流动方向上行的路径。
根据第二实施例,在位于最下游的一组管区段中,两个直管区段分别沿制冷剂的流动方向上行。因而,每个直管区段处于捕获液体制冷剂的位置,并且分配至各区段的制冷剂量较小。该量越小,则气态制冷剂流就越强烈,所述气态制冷剂可流经管区段而并不排出液体制冷剂。
为了实现较高的储存能力,所述组应包括如上所述设置的多个管环路;优选地,蒸发器的所有管环路属于该组。
每个直管区段的两个端部的高度差优选至多对应于与相邻直管区段的平均距离的一半。
附图说明
参照附图通过示意性实施例的说明将清楚本发明的其它特点和优点。在图中:
图1示出了本发明的制冷装置的示意性视图;
图2示出了根据本发明第一实施例的管式蒸发器的剖视图;并且
图3示出了根据本发明第二实施例的与如图2所示类似的管式蒸发器的剖视图的一部分。
具体实施方式
图1示出了从装置后侧看过去的、制冷装置的示意性视图,其中设备的本体1的后壁和绝缘层被省略,并且本体1的其它外侧表面透明地示出,从而示出了内舱室2和容纳在内舱室的后壁上的管式蒸发器3。
在内舱室2的下后侧区域中切出凹部,从而形成机器区域,所述机器区域容纳压缩机4和冷凝器5。压缩机4、冷凝器5和管式蒸发器3互连以形成制冷剂回路。
抽吸管线6从管式蒸发器3的上右侧角落大致垂直向下地延伸至压缩机4。压力管线7从冷凝器5延伸出,并且其长度的较大部分在抽吸管线6中延伸,直至蒸发器3的上右侧角落,在那里,所述压力管线再次从抽吸管线6排出并且经由节流点8进入蒸发器3的制冷剂管。制冷剂管形成多个垂直分级的、串联的管环路9,它们每个具有两个直的管区段,所述管区段沿相反方向延伸通过管弯头10相连。每个管环路9的上游管区段标为数字11,下游区段标为数字12。最下侧的管区段12通过大致垂直的出口管在蒸发器的上右侧角落处连接至抽吸管线6。
正如图2所示的管式蒸发器3的剖视图清楚所示,仅仅直接与节流点8相连的最远上游管环路9具有水平直管区段11′。在所有其它下游管环路9中,直管区段11、12彼此平行,同时稍微向下朝向蒸发器的、远离抽吸管线6的侧部倾斜。这意味着,液体制冷剂的液洼(puddle)14分别在每个管环路9的管区段12的处,收集在每个管环路的位于最下侧的区域中。
如果设定液洼14具有优选液位表面,则可以容易地看出,每个管区段12可保持的液体的量(液体并未完全阻塞其横截面)必须在区段的两个端部之间的高度差稍微小于管区段11的直径时最大。然后,液洼14可在管区段12的整个长度内延伸,并且仅仅充满其容积的一半。如果液体表面的形状上的表面张力的影响可以忽略,这可以是由于制冷剂的较低表面张力或制冷管的较大直径,则因而有利的是在这种情况中选择每个管区段的端部之间的高度差。
如果液体制冷剂由于其表面张力而倾向于阻塞自由横截面,则区段11、12中的倾斜度将合适地选择成稍微大一些,从而确保将由于气体在其上流动而从最低点排出的液洼14的液体制冷剂提供针对该压力的足够大的阻力,从而在管区段12的路径中,气体可通过液体而并不将其向下游驱动。高度差在此可达到几倍管直径。
在一方面,正如在另一方面,管环路可保持大量的液体制冷剂,在出现危险之前,液体制冷剂在压缩机空闲阶段过程中通过制冷剂进一步上游蒸发而被推向下游。制冷剂回路因而可以充满大量的制冷剂,而液体制冷剂无法充满下游管环路9,从而制冷剂充满将最下侧管环路连接至抽吸管线的整个出口管13,并进入抽吸管线6。
图3示出了根据本发明第二实施例的管式蒸发器3。抽吸管线6、压力管线7以及它们通至节流点8的路径与第一实施例中的情况相同,并因而无需再次描述。在该实施例中,管环路9的两个直管区段11、12并不平行,但两者沿制冷剂的流动方向上升延伸,而倾斜度在图中放大以提供更清楚的表示。这使得每个管环路9的两个管区段11、12储存液体制冷剂,从而分配至每个管区段的液体制冷剂的量较小,并且通过进一步上游出现的蒸发而导致的液体制冷剂下游被驱动的危险甚至被进一步减小。
明显的是——取决于充满制冷剂的制冷剂回路——无需所有管环路采用上行管区段,从而捕获在压缩机的空闲阶段中出现的任何液体制冷剂。具有传统的水平管区段的管环路以及具有上行管区段的管环路因而可以在蒸发器内组合,在这种情况中,具有上行管区段的管环路应设置在蒸发器的下游部分中,从而可以捕获并保持从上游水平管区段流出的液体制冷剂。
Claims (9)
1.一种制冷装置,包括管式蒸发器(3),所述管式蒸发器包含承载板以及以导热接触方式设置在其上的管,所述管式蒸发器经由抽吸管线(6)连接至压缩机(4),制冷剂管形成多个串联的管环路(9)以及上行出口管(13),所述出口管将最下游的管环路(9)连接至所述抽吸管线(6),其特征在于,所述管环路(9)在至少一段长度内具有沿制冷剂流动方向上行的路径,通过该路径与所述管环路(9)的流横截面结合,设置缓冲液体制冷剂的接收容积。
2.根据权利要求1所述的制冷装置,其特征在于,所述管环路(9)在至少与所述出口管(13)长度对应的长度内具有沿制冷剂流动方向的上行路径。
3.根据权利要求1或2所述的制冷装置,其特征在于,每个管环路(9)设有两个直管区段(11、12),它们通过弯曲区段(10)相连。
4.根据权利要求3所述的制冷装置,其特征在于,最下游的一组管环路(9)的直管区段(11、12)以一角度彼此相互平行。
5.根据权利要求4所述的制冷装置,其特征在于,在每个管环路(9)的两个直区段(11、12)中,位于下游的区段(12)具有沿制冷剂的流动方向上行的路径。
6.根据权利要求3所述的制冷装置,其特征在于,位于最下游的一组管环路(9)的直区段(11、12)分别沿制冷剂的流动方向上行。
7.根据权利要求4、5或6任一所述的制冷装置,其特征在于,所述组包括多个管环路(9)。
8.根据权利要求7所述的制冷装置,其特征在于,所述组包括所有管环路(9)。
9.根据权利要求3至8任一所述的制冷装置,其特征在于,每个直管区段(11、12)的两个端部之间的高度差至多对应于与相邻的直管区段(11、12)的平均距离一半。
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DE202006005551U DE202006005551U1 (de) | 2006-04-05 | 2006-04-05 | Kältegerät mit Rohrverdampfer |
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DE (1) | DE202006005551U1 (zh) |
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CN115479427A (zh) * | 2021-06-16 | 2022-12-16 | 青岛海尔电冰箱有限公司 | 冰箱 |
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DE102008024325A1 (de) * | 2008-05-20 | 2009-11-26 | BSH Bosch und Siemens Hausgeräte GmbH | Kühlgerät mit Kühlmittelspeicherung im Verflüssiger und entsprechendes Verfahren |
DE102016123512A1 (de) | 2016-12-06 | 2018-06-07 | Coolar UG (haftungsbeschränkt) | Verdampfervorrichtung |
JP2019207068A (ja) * | 2018-05-29 | 2019-12-05 | 株式会社ノーリツ | 熱交換器およびこれを備えた温水装置 |
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US2371215A (en) | 1945-03-13 | Refrigerating apparatus | ||
US1995167A (en) * | 1933-01-14 | 1935-03-19 | Ingersoll Steel And Dise Co | Evaporator |
US2118637A (en) * | 1936-03-05 | 1938-05-24 | Gen Electric | Evaporator for refrigerating machines |
US2292803A (en) * | 1937-04-17 | 1942-08-11 | Gen Electric | Evaporator for refrigerating machines |
US2730872A (en) * | 1954-05-25 | 1956-01-17 | Reynolds Metals Co | Evaporator incorporating accumulator wells and feed grid |
US2827774A (en) * | 1955-03-10 | 1958-03-25 | Avco Mfg Corp | Integral evaporator and accumulator and method of operating the same |
DE1299007B (de) * | 1964-09-18 | 1969-07-10 | Danfoss As | Kaelteanlage mit Kuehlfach-Verdampfer und vorgeschaltetem Gefrierfach-Verdampfer |
ES461192A1 (es) * | 1976-07-29 | 1978-12-01 | Matsushita Electric Ind Co Ltd | Una bomba de calor. |
US4187690A (en) * | 1978-08-16 | 1980-02-12 | Gulf & Western Manufacturing Company | Ice-maker heat pump |
US4291546A (en) * | 1979-06-11 | 1981-09-29 | Alco Foodservice Equipment Company | Cold plate heat exchanger |
DE3703902A1 (de) * | 1987-02-09 | 1988-08-18 | Liebherr Hausgeraete | Plattenverdampfer fuer kuehl- und gefriergeraete |
US4823561A (en) * | 1988-03-18 | 1989-04-25 | Medlock Danny H | Refrigeration apparatus having a heat exchanger pre-cooling element |
KR910002810Y1 (ko) * | 1988-10-06 | 1991-05-02 | 삼성전자 주식회사 | 제빙기의 증발기 구조 |
KR910003551Y1 (ko) * | 1989-03-03 | 1991-05-31 | 삼성전자 주식회사 | 제빙기의 증발기 구조 |
DE3921485A1 (de) * | 1989-06-30 | 1991-01-10 | Erno Raumfahrttechnik Gmbh | Verdampfungswaermetauscher |
US4995453A (en) * | 1989-07-05 | 1991-02-26 | Signet Systems, Inc. | Multiple tube diameter heat exchanger circuit |
US5031411A (en) * | 1990-04-26 | 1991-07-16 | Dec International, Inc. | Efficient dehumidification system |
SU1740916A1 (ru) | 1990-06-14 | 1992-06-15 | Московский автомобильный завод им.И.А.Лихачева | Испаритель |
JPH1019417A (ja) * | 1996-07-04 | 1998-01-23 | Matsushita Refrig Co Ltd | 冷却器 |
US6370901B1 (en) * | 2000-07-26 | 2002-04-16 | Ming-Li Tso | Compound evaporation system and device thereof |
JP2003090690A (ja) | 2001-09-18 | 2003-03-28 | Hitachi Ltd | 積層型熱交換器及び冷凍サイクル |
FR2867843B1 (fr) | 2004-03-22 | 2006-04-28 | Pechiney Rhenalu | Panneau de refroidissement pour refrigerateur ou congelateur |
-
2006
- 2006-04-05 DE DE202006005551U patent/DE202006005551U1/de not_active Expired - Lifetime
-
2007
- 2007-03-12 CN CNA2007800112908A patent/CN101410679A/zh active Pending
- 2007-03-12 US US12/225,946 patent/US8122737B2/en not_active Expired - Fee Related
- 2007-03-12 RU RU2008142982/06A patent/RU2426038C2/ru not_active IP Right Cessation
- 2007-03-12 WO PCT/EP2007/052291 patent/WO2007115877A2/de active Application Filing
- 2007-03-12 EP EP07712510A patent/EP2005077A2/de not_active Withdrawn
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN115479427A (zh) * | 2021-06-16 | 2022-12-16 | 青岛海尔电冰箱有限公司 | 冰箱 |
CN115479427B (zh) * | 2021-06-16 | 2023-08-15 | 青岛海尔电冰箱有限公司 | 冰箱 |
Also Published As
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US8122737B2 (en) | 2012-02-28 |
RU2008142982A (ru) | 2010-05-10 |
EP2005077A2 (de) | 2008-12-24 |
WO2007115877A2 (de) | 2007-10-18 |
RU2426038C2 (ru) | 2011-08-10 |
WO2007115877A3 (de) | 2007-11-29 |
DE202006005551U1 (de) | 2006-07-06 |
US20090120125A1 (en) | 2009-05-14 |
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