EP2373934A1 - Verdampfer für einen kältekreis - Google Patents
Verdampfer für einen kältekreisInfo
- Publication number
- EP2373934A1 EP2373934A1 EP09760524A EP09760524A EP2373934A1 EP 2373934 A1 EP2373934 A1 EP 2373934A1 EP 09760524 A EP09760524 A EP 09760524A EP 09760524 A EP09760524 A EP 09760524A EP 2373934 A1 EP2373934 A1 EP 2373934A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- evaporator
- region
- refrigerant
- exchanger
- designed
- 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
- F25B40/00—Subcoolers, desuperheaters or superheaters
-
- 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
-
- 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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/39—Dispositions with two or more expansion means arranged in series, i.e. multi-stage expansion, on a refrigerant line leading to the same evaporator
-
- 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
- F25B2341/00—Details of ejectors not being used as compression device; Details of flow restrictors or expansion valves
- F25B2341/06—Details of flow restrictors or expansion valves
- F25B2341/064—Superheater expansion valves
-
- 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
- F25B2400/05—Compression system with heat exchange between particular parts of the system
- F25B2400/054—Compression system with heat exchange between particular parts of the system between the suction tube of the compressor and another part of the cycle
-
- 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
- F25B2500/18—Optimization, e.g. high integration of refrigeration components
-
- 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
- F25B2600/00—Control issues
- F25B2600/21—Refrigerant outlet evaporator temperature
Definitions
- the invention relates to an evaporator for a refrigeration cycle, in particular for a motor vehicle, according to the preamble of claim 1 and an operating method for such an evaporator.
- the exchanger member allows overheating of the refrigerant leaving the evaporator section by transferring heat defined by the inlet-side refrigerant flow to the exiting refrigerant flow. This makes it possible, in particular, for the refrigerant to rich without or with only slight overheating to flow through.
- the refrigerant can also be present in the entire evaporator area as a wet steam phase and thus cause a complete and homogeneous cooling of the evaporator area.
- the first expansion element means any suitable expansion element such as a fixed throttle, a thermostatic expansion valve (TXV) or an electronically controlled expansion valve. Since the first expansion element is arranged upstream of the exchanger element, the exchanger element can also be regarded as an internal low-pressure heat exchanger of the refrigeration circuit.
- the evaporator according to the invention thus comprises an evaporator region essentially in heat exchange with the outer space and the exchanger element essentially effecting an internal heat exchange.
- a second expansion element is provided on the inlet side between the exchanger element and the evaporator region.
- the inlet-side part of the exchanger element arranged upstream of the evaporator region can transmit an amount of enthalpy to the outlet-side refrigerant flow in a particularly effective manner.
- the second expansion element is preferably a fixed throttle, which is to be dimensioned accordingly.
- the second expansion element can also be designed to be adjustable, either as an alternative or in addition to a controllable design of the first expansion element.
- the first expansion organ is designed as the sole interface between the evaporator region and the exchanger element relative to the remaining refrigerant circuit, with the first expansion element being designed in particular as a thermostatic expansion valve.
- the first refrigerant undergoes substantially no overheating in normal operation in the evaporator region. tion, wherein overheating takes place on the outlet side of the evaporator region in the exchanger element.
- overheating takes place on the outlet side of the evaporator region in the exchanger element.
- the entire evaporator region is subject to a substantially homogeneous cooling performance, and in particular no load-dependent overheating region is present in the evaporator region in its extent.
- the exchanger member is formed in a simple manner as a section of parallel channels, wherein at least one leading channel is in thermal exchange with at least one recirculating channel via a partition wall.
- Number and length of the channels can be designed depending on the required performance of the exchanger member and given space.
- the leading channel and the returning channel have a substantially spiral course. In this way, a compact exchange member can be realized.
- a spiral shape in the sense of the invention is to be understood as a circular, elliptical, polygonal or other spiral-shaped arrangement.
- the evaporator region and the exchanger element are designed as a structurally integrated unit.
- the evaporator region and the exchanger element can also be embodied as structurally separated units, which, however, in particular are not necessarily mounted at different locations and connected to one another via refrigerant lines.
- the evaporator region is designed as an air-cooled climatic evaporator for conditioning an air stream, in particular as a flat-tube evaporator.
- the evaporator is designed as a cooling body for cooling thermally conductive elements connected to the heat sink.
- the heat sink has a flat plate shape with holders for cylindrical memory cells arranged in an igelike manner thereon.
- the embodiments of an embodiment of the invention designed as a cooling body evaporator area are not limited to this example.
- the heat sink can also be designed for cooling flat cells ("cofeece bags") or prismatic cells, be configured as a folded heat sink, or the like.
- the elements are designed as electrical energy storages, in particular lithium-ion storage cells.
- Lithium-ion storage cells not only require high cooling capacity due to their power density, but also place high demands on compliance with a given temperature range in terms of function, operational reliability and service life.
- a further heat source in particular power electronics, can also be thermally connected to the exchanger element.
- the exchanger member is only partially designed as an inner heat exchanger of the refrigeration circuit and also allows NEN heat transfer to the outside, the heat introduced additionally ensures overheating of the refrigerant in the exchanger.
- the exchanger element can also be designed without heat exchange with the outside area or as exclusively internal heat exchanger.
- the heat sink is formed at least in the evaporator region in a sandwich plate construction.
- a plate evaporator is described, for example, in the publication DE 195 28 116 B4, wherein a plurality of layers of perforated, in particular solder-plated, sheets are stacked on top of one another to form the channels for the refrigerant.
- the exchanger member is formed in a plate-sandwich construction, in particular in a structural unit with the evaporator area.
- the object of the invention is also achieved by the features of claim 15 for an operating method of an evaporator according to the invention. The control to avoid overheating in the evaporator area ensures a particularly homogeneous cooling.
- Fig. 1 shows a schematic representation of a first embodiment of the invention.
- Fig. 2 shows a pressure-enthalpy diagram of a refrigeration circuit with inventive evaporator.
- Fig. 3 shows several cross-sections A-E possible designs of a
- FIG. 4 shows a schematic representation of a second exemplary embodiment of the invention.
- Fig. 5 shows a schematic representation of a third embodiment of the invention.
- Fig. 6 shows a schematic representation of a possible design of a exchanger member.
- the evaporator shown in FIG. 1 comprises an evaporator region 1 and a exchanger element 2 connected thereto.
- the evaporator 1 is designed as a flat-tube evaporator for conditioning air L for a passenger compartment. In order to optimize its performance and improve homogeneity, it is divided into six blocks in the present case, through which a refrigerant K flows through one after the other.
- the evaporator region is thus designed as a heat exchanger connected thermally to the outer region, wherein the exchanger element is designed essentially as an inner heat exchanger.
- a thermostatic expansion valve 3 is arranged as a first expansion member in front of the exchanger member 2, wherein a leading refrigerant flow is controlled by the expansion valve 3.
- the refrigerant flow exiting the evaporator also flows through the expansion valve, the control taking place as a function of pressure and temperature of the exiting flow. In this way, an overheating of the exiting stream is ensured continuously, which subsequently enters the suction side in a compressor of the refrigeration circuit.
- a second expansion element 4 in the form of a fixed throttle is provided on the input side of the evaporator region 1 or between exchanger element 2 and evaporator region 1. This ensures that the incoming stream of refrigerant in the region of the exchanger member only partially expands, wherein in this area sufficient for overheating amount of heat is transferred to the exiting stream. In the entire evaporator region 1 can therefore not be superheated refrigerant, so wet steam, with appropriate control.
- the exchanger element can be designed as parallel channels leading back and forth 2a, 2b, which are in thermal contact via a wall 2c.
- Fig. 3 shows various suitable variants of such an arrangement.
- the embodiments A, C, D and E may be formed as extruded profiles, which include both channels 2a, 2b.
- Type B consists of two concentric tubes, at the ends of which corresponding feed pieces (not shown) for the refrigerant are arranged.
- the hydraulic cross section for the recirculating channel is greater than for the leading channel to account for the expansion in the evaporator 1, 2.
- the exchanger member 2 may be formed as a multi-channel pipe section with the flat tube evaporator 3 as a structurally integrated unit, for example.
- the expansion valve 3 may be provided on this unit. D the connections of the expansion valve 3 in a known manner, the only interface of the evaporator 1, 2 to the rest of the refrigerant circuit. In the cycle of the refrigerant shown in Fig. 2 are carried out in succession
- Compression A approximately isobaric cooling in a condenser B
- Fig. 2 is also entered a state curve of the refrigerant.
- the areas F and G adjoin each other in section with the steady state curve. This represents the case that the overheating begins exactly with the transition from the evaporator region 1 into the exchanger element 2.
- Typical exemplary operating points for the refrigerant are:
- the second embodiment according to FIG. 4 differs from the first example only in the structural design, in particular of the evaporator region 1, but is identical in function (see FIG. 2).
- the evaporator region 1 is formed as a plate-shaped heat sink, are mounted on the elements to be cooled (not shown) in the form of lithium-ion storage cells thermally conductive.
- An example for a specific design of such a designed as a heat sink evaporator is described in the document EP 1 835 251 A1.
- the heat sink In the constructive detail design of the heat sink is formed in a sandwich-sandwich construction of stacked, solder-plated sheets or plates, the refrigerant channels by means of pre-punched
- Openings are formed in the sheets.
- the sheet stack is then soldered flat in a soldering oven.
- a detailed example of such a construction of an evaporator is known from the document DE 195 28 116 B4.
- the exchanger element 2 is provided separately from the plate-shaped heat sink or evaporator region 1 and connected to it via refrigerant lines.
- the plate-shaped heat sink 1 is formed as an integrated structural unit with the exchanger element 2.
- Fig. 6 shows an exemplary shape of the refrigerant channels of the exchanger element 2, wherein the parallel, leading and returning channels 2a, 2b are spirally wound with their thermally connecting partition 2c in a plane spiral.
- a diversion in depth In the middle of the spiral for each of the channels is a diversion in depth, which can be realized for example by a connection hole in the cooling plate.
- the helical design of the exchanger element 2 counteracts its property as an internal heat exchanger of the refrigeration circuit.
- the spiral-shaped exchanger element 2 like the evaporator region 1 in FIG. 4, FIG. 5, is constructed by a stack of perforated plates. In the example according to FIG. 5, these are expediently the same sheets as those of the evaporator region.
- a spiral configuration of the exchanger element can also be achieved by winding tubes, for example with cross sections according to FIG. 3.
- the return and return channels in the exemplary embodiments according to FIGS. 3 and 6 can be interchanged so that the channels 2a are designed as returning channels and the channels 2b as leading channels.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008060699A DE102008060699A1 (de) | 2008-12-08 | 2008-12-08 | Verdampfer für einen Kältekreis |
| PCT/EP2009/065852 WO2010076101A1 (de) | 2008-12-08 | 2009-11-25 | Verdampfer für einen kältekreis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2373934A1 true EP2373934A1 (de) | 2011-10-12 |
| EP2373934B1 EP2373934B1 (de) | 2015-08-19 |
Family
ID=41650236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09760524.0A Not-in-force EP2373934B1 (de) | 2008-12-08 | 2009-11-25 | Verdampfer für einen kältekreis |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US8616012B2 (de) |
| EP (1) | EP2373934B1 (de) |
| CN (1) | CN102239374B (de) |
| DE (1) | DE102008060699A1 (de) |
| WO (1) | WO2010076101A1 (de) |
Families Citing this family (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011111964A1 (de) * | 2011-08-31 | 2013-02-28 | Ixetic Bad Homburg Gmbh | Verdampfer-Wärmetauscher-Einheit |
| FR3033035B1 (fr) * | 2015-02-19 | 2019-04-19 | Valeo Systemes Thermiques | Systeme de refroidissement pour un circuit de climatisation d'un vehicule automobile et utilisation dudit systeme de refroidissement |
| TWI641789B (zh) | 2015-07-10 | 2018-11-21 | 艾克頌美孚上游研究公司 | 使用液化天然氣製造液化氮氣之系統與方法 |
| TWI606221B (zh) | 2015-07-15 | 2017-11-21 | 艾克頌美孚上游研究公司 | 一倂移除溫室氣體之液化天然氣的生產系統和方法 |
| TWI608206B (zh) | 2015-07-15 | 2017-12-11 | 艾克頌美孚上游研究公司 | 藉由預冷卻天然氣供給流以增加效率的液化天然氣(lng)生產系統 |
| EP3390936A1 (de) | 2015-12-14 | 2018-10-24 | Exxonmobil Upstream Research Company | Vorkühlung von erdgas durch hochdruckkompression und -expansion |
| SG11201803526XA (en) | 2015-12-14 | 2018-06-28 | Exxonmobil Upstream Res Co | Method and system for separating nitrogen from liquefied natural gas using liquefied nitrogen |
| SG11201803521SA (en) | 2015-12-14 | 2018-06-28 | Exxonmobil Upstream Res Co | Method of natural gas liquefaction on lng carriers storing liquid nitrogen |
| EP3390939B1 (de) | 2015-12-14 | 2020-12-30 | Exxonmobil Upstream Research Company | Expanderbasierte, mit flüssigem stickstoff verbesserte flüssigerdgasproduktionsverfahren |
| US20180231303A1 (en) | 2017-02-13 | 2018-08-16 | Fritz Pierre, JR. | Pre-Cooling of Natural Gas by High Pressure Compression and Expansion |
| JP6858267B2 (ja) | 2017-02-24 | 2021-04-14 | エクソンモービル アップストリーム リサーチ カンパニー | 二重目的lng/lin貯蔵タンクのパージ方法 |
| MY204021A (en) | 2018-06-07 | 2024-08-01 | Exxonmobil Upstream Res Co | Pretreatment and pre-cooling of natural gas by high pressure compression and expansion |
| AU2019322808B2 (en) | 2018-08-14 | 2022-10-13 | ExxonMobil Technology and Engineering Company | Conserving mixed refrigerant in natural gas liquefaction facilities |
| MY208562A (en) | 2018-08-22 | 2025-05-15 | Exxonmobil Upstream Res Co | Managing make-up gas composition variation for a high pressure expander process |
| EP3841343A2 (de) | 2018-08-22 | 2021-06-30 | ExxonMobil Upstream Research Company | Wärmetauscherkonfiguration für hochdruckexpanderverfahren und verfahren zur erdgasverflüssigung unter verwendung derselben |
| JP7179155B2 (ja) | 2018-08-22 | 2022-11-28 | エクソンモービル アップストリーム リサーチ カンパニー | 高圧エキスパンダプロセスのための一次ループ始動方法 |
| WO2020106397A1 (en) | 2018-11-20 | 2020-05-28 | Exxonmobil Upstream Research Company | Methods and apparatus for improving multi-plate scraped heat exchangers |
| WO2020106394A1 (en) | 2018-11-20 | 2020-05-28 | Exxonmobil Upstream Research Company | Poly refrigerated integrated cycle operation using solid-tolerant heat exchangers |
| US11668524B2 (en) | 2019-01-30 | 2023-06-06 | Exxonmobil Upstream Research Company | Methods for removal of moisture from LNG refrigerant |
| EP3918261A1 (de) | 2019-01-30 | 2021-12-08 | Exxonmobil Upstream Research Company (EMHC-N1-4A-607) | Verfahren zur entfernung von feuchtigkeit aus lng-kältemittel |
| US11465093B2 (en) | 2019-08-19 | 2022-10-11 | Exxonmobil Upstream Research Company | Compliant composite heat exchangers |
| US20210063083A1 (en) | 2019-08-29 | 2021-03-04 | Exxonmobil Upstream Research Company | Liquefaction of Production Gas |
| US11806639B2 (en) | 2019-09-19 | 2023-11-07 | ExxonMobil Technology and Engineering Company | Pretreatment and pre-cooling of natural gas by high pressure compression and expansion |
| WO2021055021A1 (en) | 2019-09-19 | 2021-03-25 | Exxonmobil Upstream Research Company | Pretreatment and pre-cooling of natural gas by high pressure compression and expansion |
| US12050054B2 (en) | 2019-09-19 | 2024-07-30 | ExxonMobil Technology and Engineering Company | Pretreatment, pre-cooling, and condensate recovery of natural gas by high pressure compression and expansion |
| US11083994B2 (en) | 2019-09-20 | 2021-08-10 | Exxonmobil Upstream Research Company | Removal of acid gases from a gas stream, with O2 enrichment for acid gas capture and sequestration |
| KR20220062653A (ko) | 2019-09-24 | 2022-05-17 | 엑손모빌 업스트림 리서치 캄파니 | 선박의 이중 목적 극저온 탱크 또는 lng 및 액화 질소용 부유식 저장 유닛용 화물 스트리핑 기능 |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3301100B2 (ja) * | 1991-01-31 | 2002-07-15 | 株式会社デンソー | 蒸発器および冷凍サイクル装置 |
| JP3635715B2 (ja) * | 1994-10-07 | 2005-04-06 | 株式会社デンソー | 冷房装置用蒸発器 |
| DE19528116B4 (de) * | 1995-08-01 | 2007-02-15 | Behr Gmbh & Co. Kg | Wärmeübertrager mit Platten-Sandwichstruktur |
| CN1098443C (zh) * | 1997-02-28 | 2003-01-08 | 黄绍光 | 热泵和冰水机装置 |
| JP2001201212A (ja) * | 2000-01-18 | 2001-07-27 | Fuji Koki Corp | 温度膨張弁 |
| CN2542970Y (zh) * | 2002-04-23 | 2003-04-02 | 王全龄 | 新型热泵蓄能空调装置 |
| JP2004012127A (ja) * | 2003-10-02 | 2004-01-15 | Mitsubishi Electric Corp | 可燃性冷媒を用いた冷蔵庫 |
| EP1835251B1 (de) | 2006-02-22 | 2011-12-28 | Behr GmbH & Co. KG | Vorrichtung zur Kühlung elektrischer Elemente |
| JP2007240041A (ja) * | 2006-03-07 | 2007-09-20 | Tgk Co Ltd | 膨張弁 |
| JP2008215797A (ja) * | 2007-02-07 | 2008-09-18 | Tgk Co Ltd | 膨張弁 |
| FR2913764B1 (fr) * | 2007-03-12 | 2009-12-11 | Valeo Systemes Thermiques | Echangeur de chaleur et ensemble integre incorporant un tel echangeur |
| DE102007013125A1 (de) * | 2007-03-15 | 2008-09-18 | Behr Gmbh & Co. Kg | Wärmeübertrager |
-
2008
- 2008-12-08 DE DE102008060699A patent/DE102008060699A1/de not_active Withdrawn
-
2009
- 2009-11-25 WO PCT/EP2009/065852 patent/WO2010076101A1/de not_active Ceased
- 2009-11-25 EP EP09760524.0A patent/EP2373934B1/de not_active Not-in-force
- 2009-11-25 CN CN200980148250.7A patent/CN102239374B/zh not_active Expired - Fee Related
-
2011
- 2011-06-08 US US13/156,002 patent/US8616012B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2010076101A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102008060699A1 (de) | 2010-06-10 |
| CN102239374B (zh) | 2014-04-23 |
| US8616012B2 (en) | 2013-12-31 |
| WO2010076101A1 (de) | 2010-07-08 |
| EP2373934B1 (de) | 2015-08-19 |
| US20110296851A1 (en) | 2011-12-08 |
| CN102239374A (zh) | 2011-11-09 |
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