US20120180987A1 - Condenser having a sub-cooling unit - Google Patents

Condenser having a sub-cooling unit Download PDF

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Publication number
US20120180987A1
US20120180987A1 US12/679,216 US67921611A US2012180987A1 US 20120180987 A1 US20120180987 A1 US 20120180987A1 US 67921611 A US67921611 A US 67921611A US 2012180987 A1 US2012180987 A1 US 2012180987A1
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US
United States
Prior art keywords
cooling
conduit
collector
condensing
condenser
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.)
Abandoned
Application number
US12/679,216
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English (en)
Inventor
Klaus Koch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Carrier Corp
Original Assignee
Carrier Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=39316346&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=US20120180987(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Carrier Corp filed Critical Carrier Corp
Publication of US20120180987A1 publication Critical patent/US20120180987A1/en
Abandoned legal-status Critical Current

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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
    • F25B39/04—Condensers
    • 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
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
    • F25B49/027—Condenser control arrangements
    • 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
    • F25B2600/19—Refrigerant outlet condenser temperature
    • 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
    • F25B40/02—Subcoolers

Definitions

  • Condensers are known and widely used in cooling devices of any kind. Within said condensers gaseous refrigerant is condensed to liquid refrigerant and then supplied to the expansion device and the evaporator downstream of the condenser. Sometimes a condenser is followed by a sub cooling unit in order to cool the liquid refrigerant even further before feeding it to the expansion device and the evaporator. This increases the efficiency of the vapor compression cycle.
  • a condenser as shown by the European patent application EP 1 406 050 A2 further comprises a gas compensation unit.
  • the condenser according to the EP 1 406 050 A2 comprises three collectors, a gas inlet collector, a gas outlet collector, and a gas compensation collector.
  • Exemplary embodiments of the invention include a condenser having a sub cooling unit, comprising a gas inlet collector; a sub cooler collector connected to the gas inlet collector by at least one condensing conduit having a condensing surface, said condensing surface condensing the gaseous refrigerant to liquid refrigerant, said sub cooler collector collecting the liquid refrigerant; and a liquid refrigerant collector connected to the sub cooler collector by at least one cooling conduit having a cooling surface, said cooling surface cooling down the liquid refrigerant; the at least one condensing conduit discharging into the top of the sub cooler collector and the at least one cooling conduit joining at the bottom of the sub cooler collector so that the sub cooler collector allows for compensation of the gaseous refrigerant.
  • Exemplary embodiments of the invention further comprise a method for regulating a condenser according to the invention by regulating the airflow passing the cooling conduit in order to adjust the temperature of the liquid refrigerant output by the condenser.
  • FIG. 1 shows a schematic front view of a condenser in accordance with an embodiment of the present invention
  • FIG. 2 shows a sectional side view of the condenser of FIG. 1 in accordance with an embodiment of the present invention.
  • FIG. 1 shows a schematic front view of a condenser 1 according to a embodiment of the present invention.
  • Two fans 24 are arranged on top of the condenser 1 in order to draw a cooling air flow F from the bottom to the top of the condenser 1 .
  • These fans can be of conventional kind.
  • the condenser 1 comprises at its top a gas inlet collector 2 which is supplied with gaseous refrigerant by a refrigerant conduit 8 which opens to the top of the gas inlet collector 2 .
  • a plurality of condensing conduits 12 are connected to the gas inlet collector 2 .
  • Said condensing conduits 12 form a condensing surface in order to condense the gaseous refrigerant to liquid refrigerant.
  • the condensing conduits 12 run in vertical direction from the gas inlet collector 2 to a sub cooler collector 4 which is arranged below the gas inlet collector 2 .
  • the condensing conduits 12 open to the top of said sub cooler collector 4 .
  • a plurality of cooling conduits 14 join at the bottom of the sub cooler collector 4 so that liquid refrigerant 10 b flows out of said sub cooler collector 4 through said cooling conduits 14 .
  • the cooling conduits 14 run vertically down from the sub cooler collector 4 to a liquid refrigerant collector 6 and open to its top.
  • the liquid refrigerant collector 6 is arranged in parallel below the sub cooler collector 4 .
  • the cooling conduits 14 have a cooling surface for further cooling down the liquid refrigerant 10 b .
  • the cooled liquid refrigerant is collected in the liquid refrigerant collector 4 and delivered to an expansion device and an evaporator (not shown) by a liquid conduit 16 which joins at the bottom of the liquid collector 6 .
  • the sub cooler collector 4 is filled approximately up to the half of its height with liquid refrigerant 10 b , while its upper half is filled with gaseous refrigerant 10 a.
  • FIG. 2 shows a sectional view of the condenser 1 according to an embodiment of the present invention, taken along the line A-A in FIG. 1 .
  • Said air flow F is laterally confined by two sidewalls 3 a , 3 b which are arranged at the left and the right side of the fans 24 and extend over the whole height of the condenser 1 .
  • the gas inlet collector 2 is shown at the right side of the right sidewall 3 b .
  • the gas inlet collector 2 is formed as a circular pipe which is viewed in axial direction in FIG. 2 .
  • the gas inlet conduit 8 opens to the top of the gas inlet collector 2 delivering gaseous refrigerant 10 a .
  • a gas condensing conduit 12 joins at the left side of the gas inlet collector 2 .
  • Said condensing conduit 12 passes the right sidewall 3 from right to left and meanders over the width of the condenser 1 between the left sidewall 3 a and the right sidewall 3 b in the form of a winding line, down to approximately the middle of the condenser 1 .
  • There, there condensing conduit 12 passes the right sidewall 3 b from left to right, bends down from a horizontal to a vertical direction and opens to the top of the sub cooler collector 4 .
  • the sub cooler collector 4 is formed as a pipe running parallel to the gas inlet collector 2 .
  • the sub cooler collector 4 In operation the sub cooler collector 4 is filled with liquid refrigerant 10 b approximately up to half of its height. The upper half of the sub cooler collector 4 is filled with gaseous refrigerant 10 a.
  • a cooling conduit 14 joins at the bottom of the sub cooler collector 4 . Due to this assembly the sub cooler collector 4 allows for compensation of the gaseous refrigerant without the need of an additional gas compensating collector.
  • the cooling conduit 14 extending from the bottom of the sub cooler collector 4 bends from the vertical to the horizontal direction and again passes the right sidewall 3 b from right to left.
  • the cooler conduit 14 meanders in the form of a winding line downwards, but uses only half of the width between the left sidewall 3 a and the right sidewall 3 b .
  • the cooling conduit 14 then passes again the right sidewall 3 b horizontally from left to right and opens to the side of liquid refrigerant collector 6 .
  • the liquid refrigerant collector 6 is formed as a pipe running parallel to the gas inlet collector 2 and to the sub cooler collector 4 .
  • a liquid conduit 16 joins at the bottom of liquid refrigerant collector 6 discharging the liquid refrigerant 10 b from the liquid collector 6 and delivering the liquid refrigerant to the expansion device and the evaporator (not shown).
  • An air flow regulation means 22 in form of an air flap is arranged above the cooling conduit 14 but below the condensing conduit 12 at the left side of the right sidewall 3 b .
  • This air flap 22 is only represented schematically. As a matter of course, a plurality of air flaps 22 can be present, and they can also be arranged before the cooling conduit 14 .
  • the air flow passing the cooling conduit 14 can be regulated by operating said air flap 22 . In doing so the temperature of the liquid refrigerant leaving the cooling conduit 14 and entering the liquid refrigerant collector 6 can be adjusted conveniently.
  • the air flow passing only the condensing conduit 12 can be separated from the air flow passing both the cooling conduit 14 and the condensing conduit 12 by means of a wall, that extends for example vertically to the left from the cooling conduit 14 .
  • a condenser according to exemplary embodiments of the invention, as described above, allows to reduce the number of components and thus the complexity of the condenser and it therefore facilitates the assembly and minimizes the time needed for the assembly, which results in the reduction of the production costs. It also allows to easily regulate the temperature of the liquid refrigerant output by the condenser.
  • At least one of the gas inlet collector, the sub cooler collector and the liquid collector is formed as a pipe.
  • Pipes can be purchased very easily from the shelf in any desired diameter and do not comprise any edges which could provide a point of mechanical weakness.
  • At least one of the condensing conduit and the cooling conduit is a core pipe.
  • Core pipes are usually and conveniently used as condensing and/or cooling conduits in condensers, as they enable a very efficient condensing and/or cooling of a refrigerant.
  • At least part of the air flow passes only the condensing surface of the condensing conduit while another part passes the condensing surface of the condensing conduit as well as the cooling surface of the sub cooling conduit. This further improves the efficiency of the condensing conduit.
  • the condensing surface of the condensing conduit is arranged in the air flow downstream of the sub cooling surface of the cooling conduit. This further improves the efficiency of the condenser, since the cooling conduit having a lower temperature than the condensing conduit is cooled first by the air flow.
  • the condensing surface is arranged above the sub cooling surface. This enhances the efficiency even further since in this configuration the air flow is supported by the thermodynamic properties of warm air raising upwards.
  • condensing surface and the sub cooling surface are connected by a flange connection. This also improves the air flow from the condensing surface to the sub cooling surface.
  • the surface area of the condensing surface is larger than the surface area of the sub cooling surface. This also increases the efficiency as usually a larger surface area is needed for condensing than for sub cooling.
  • the condenser comprises at least one air flow regulation means which is configured to regulate the air flow passing the sub cooling surface. This enables regulating the temperature of the liquid refrigerant leaving the cooling conduit and thereby enhancing the efficiency of the vapor compression cycle.
  • the condenser comprises at least one air flow regulation means configured to regulate the air flow passing the condenser surface. This enables regulating the performance of the condensing conduit in order to increase the efficiency of the condenser.
  • the at least one air flow regulation means comprises a throttle valve.
  • a throttle valve is a very convenient and inexpensive means for regulating the air flow.
  • the air flow regulation means is arranged in the air flow between a condensing conduit and the cooling conduit. This arrangement enables a particular effective regulation of the air flow passing the cooling conduit.
  • a condenser further comprises a fan for enhancing the air flow.
  • a fan for enhancing the air flow.
  • the at least one fan is arranged on top of the condenser in order to draw the air from the bottom to the top of the condenser. This enables a particularly efficient air flow through the condenser.
  • the gas inlet collector comprises a gas inlet conduit feeding a gaseous refrigerant thereto. This enables a particular effective operation of the condenser.
  • a condenser according to the present invention is comprised in a vapor compression cycle. This provides a vapor compression cycle which can be operated very efficiently and which can be assembled at low cost.
  • such a vapor compression cycle comprising a condenser according to the present invention is comprised in a refrigerating furniture.
  • This provides a very efficient refrigerating furniture which can be produced at low cost.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
US12/679,216 2007-09-19 2007-09-19 Condenser having a sub-cooling unit Abandoned US20120180987A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2007/008162 WO2009036788A1 (en) 2007-09-19 2007-09-19 Condenser having a sub-cooling unit

Publications (1)

Publication Number Publication Date
US20120180987A1 true US20120180987A1 (en) 2012-07-19

Family

ID=39316346

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/679,216 Abandoned US20120180987A1 (en) 2007-09-19 2007-09-19 Condenser having a sub-cooling unit

Country Status (4)

Country Link
US (1) US20120180987A1 (zh)
EP (1) EP2201313A1 (zh)
CN (1) CN101842648B (zh)
WO (1) WO2009036788A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140075978A1 (en) * 2008-06-23 2014-03-20 Efficient Energy Gmbh Device and method for an efficient surface evaporation and for an efficient condensation
CN108150437A (zh) * 2017-12-22 2018-06-12 重庆天杰科技有限公司 一种电脑散热器

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104197738A (zh) * 2014-09-15 2014-12-10 重庆蜀东天益空气冷却器有限公司 带冷却装置的冷凝器
CN105318612A (zh) * 2015-12-05 2016-02-10 广东志高空调有限公司 一种空调冷凝器过冷段热电冷却系统

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2218596A (en) * 1935-07-30 1940-10-22 Carrier Corp Refrigerating apparatus
DE10104374A1 (de) * 2001-02-01 2002-08-08 Behr Gmbh & Co Kältemittel-Kondensator
KR100865982B1 (ko) * 2001-02-05 2008-10-29 쇼와 덴코 가부시키가이샤 복합형 열교환기 및 복합형 열교환기를 구비한 냉동 시스템
CN2539107Y (zh) * 2002-04-12 2003-03-05 陈基镛 一种过冷型平行流冷凝器
CN2589920Y (zh) * 2002-12-31 2003-12-03 李勇明 一种异型平行流冷凝器
US6694773B1 (en) * 2003-01-29 2004-02-24 Calsonickansei North America, Inc. Condenser system with nondetachably coupled receiver

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140075978A1 (en) * 2008-06-23 2014-03-20 Efficient Energy Gmbh Device and method for an efficient surface evaporation and for an efficient condensation
US9732994B2 (en) * 2008-06-23 2017-08-15 Efficient Energy Gmbh Device and method for an efficient surface evaporation and for an efficient condensation
CN108150437A (zh) * 2017-12-22 2018-06-12 重庆天杰科技有限公司 一种电脑散热器

Also Published As

Publication number Publication date
CN101842648B (zh) 2012-11-14
WO2009036788A1 (en) 2009-03-26
EP2201313A1 (en) 2010-06-30
CN101842648A (zh) 2010-09-22

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STCB Information on status: application discontinuation

Free format text: EXPRESSLY ABANDONED -- DURING EXAMINATION