EP1808655A3 - Refrigeration system - Google Patents

Refrigeration system Download PDF

Info

Publication number
EP1808655A3
EP1808655A3 EP07000185A EP07000185A EP1808655A3 EP 1808655 A3 EP1808655 A3 EP 1808655A3 EP 07000185 A EP07000185 A EP 07000185A EP 07000185 A EP07000185 A EP 07000185A EP 1808655 A3 EP1808655 A3 EP 1808655A3
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
flow direction
refrigerant
evaporator
inner heat
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Withdrawn
Application number
EP07000185A
Other languages
German (de)
French (fr)
Other versions
EP1808655A2 (en
Inventor
Uwe Dipl.-Ing. Regin
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.)
Guentner GmbH and Co KG
Original Assignee
Guentner GmbH and Co KG
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
Application filed by Guentner GmbH and Co KG filed Critical Guentner GmbH and Co KG
Publication of EP1808655A2 publication Critical patent/EP1808655A2/en
Publication of EP1808655A3 publication Critical patent/EP1808655A3/en
Withdrawn legal-status Critical Current

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
    • F25B41/00—Fluid-circulation arrangements
    • F25B41/30—Expansion means; Dispositions thereof
    • F25B41/31—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
    • 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
    • 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
    • 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
    • F25B2600/25—Control of valves
    • F25B2600/2513—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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2117—Temperatures of an evaporator
    • F25B2700/21175—Temperatures of an evaporator of the refrigerant at the outlet of the evaporator

Abstract

Die vorliegende Erfindung bezieht sich auf eine Kälteanlage mit folgenden zu einem Kreisprozess für ein Kältemittel verbundenen Komponenten: einem Verdampfer (2), einem diesem in Strömungsrichtung des gasförmigen Kältemittels nachgeordneten inneren Wärmeaustauscher (3), einem Verdichter (4), einem Verflüssiger (5), welchem in Strömungsrichtung des nunmehr flüssigen Kältemittels der innere Wärmeaustauscher (3) nachgeschaltet ist, und einem dem inneren Wärmeaustauscher (3) in Strömungsrichtung des flüssigen Kältemittels nachgeordneten und dem Verdampfer (2) vorgeschalteten Expansionsventil (6), welches einen Überhitzungsfühler (11) aufweist. Die Erfindung ist dadurch gekennzeichnet dass das Expansionsventil (6) ein solches mit einer statischen Überhitzung ≤ 2 K ist und der Überhitzungsfühler (11) in Strömungsrichtung des Kältemittels hinter dem Verdampfer (2) und vor dem inneren Wärmeaustauscher (3) angeordnet ist.

Figure imgaf001
The present invention relates to a refrigeration system with the following components connected to a cycle for a refrigerant: an evaporator (2), an internal heat exchanger (3) downstream of it in the flow direction of the gaseous refrigerant, a compressor (4), a condenser (5) , which downstream of the inner heat exchanger (3) in the flow direction of the now liquid refrigerant, and an expansion valve (6) upstream of the inner heat exchanger (3) in the flow direction of the liquid refrigerant and upstream of the evaporator (2), which has an overheating sensor (11) , The invention is characterized in that the expansion valve (6) is one with a static superheat ≤ 2 K and the superheat sensor (11) in the flow direction of the refrigerant behind the evaporator (2) and in front of the inner heat exchanger (3) is arranged.
Figure imgaf001
EP07000185A 2006-01-11 2007-01-05 Refrigeration system Withdrawn EP1808655A3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202006000385U DE202006000385U1 (en) 2006-01-11 2006-01-11 refrigeration plant

Publications (2)

Publication Number Publication Date
EP1808655A2 EP1808655A2 (en) 2007-07-18
EP1808655A3 true EP1808655A3 (en) 2008-04-02

Family

ID=36062845

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07000185A Withdrawn EP1808655A3 (en) 2006-01-11 2007-01-05 Refrigeration system

Country Status (2)

Country Link
EP (1) EP1808655A3 (en)
DE (1) DE202006000385U1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019001638A1 (en) * 2019-03-08 2020-09-10 Stiebel Eltron Gmbh & Co. Kg Method for operating a heat pump with a vapor compression system
DE102021127498A1 (en) 2021-10-22 2023-04-27 Cabero Beteiligungs-Gmbh cooling system

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4475686A (en) * 1977-11-03 1984-10-09 Danfoss A/S Valve for liquid injection into a refrigerant evaporator
US5005370A (en) * 1988-12-19 1991-04-09 Fuji Koki Mfg. Co. Ltd. Thermal expansion valve
EP1026459A1 (en) * 1999-01-11 2000-08-09 Sanden Corporation Vapor compression type refrigeration system
JP2001108314A (en) * 1999-10-05 2001-04-20 Zexel Valeo Climate Control Corp Refrigerating cycle controller
US6427454B1 (en) * 2000-02-05 2002-08-06 Michael K. West Air conditioner and controller for active dehumidification while using ambient air to prevent overcooling
EP1369648A2 (en) * 2002-06-04 2003-12-10 Sanyo Electric Co., Ltd. Supercritical refrigerant cycle system
WO2004053406A1 (en) * 2002-12-11 2004-06-24 Bms-Energietechnik Ag Evaporation process control for use in refrigeration technology
WO2004055454A1 (en) * 2002-12-14 2004-07-01 Volkswagen Aktiengesellschaft Coolant circuit for a motor vehicle air conditioning system
DE102004005802A1 (en) * 2004-02-06 2005-08-25 Lauda Dr. R. Wobser Gmbh & Co. Kg. A refrigeration system has an expansion valve by which the refrigerant flow rate is controlled according to the temperature difference between the inlet and outlet of the evaporator
US20070074538A1 (en) * 2005-09-07 2007-04-05 Denso Corporation Refrigeration cycle device

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4475686A (en) * 1977-11-03 1984-10-09 Danfoss A/S Valve for liquid injection into a refrigerant evaporator
US5005370A (en) * 1988-12-19 1991-04-09 Fuji Koki Mfg. Co. Ltd. Thermal expansion valve
EP1026459A1 (en) * 1999-01-11 2000-08-09 Sanden Corporation Vapor compression type refrigeration system
JP2001108314A (en) * 1999-10-05 2001-04-20 Zexel Valeo Climate Control Corp Refrigerating cycle controller
US6427454B1 (en) * 2000-02-05 2002-08-06 Michael K. West Air conditioner and controller for active dehumidification while using ambient air to prevent overcooling
EP1369648A2 (en) * 2002-06-04 2003-12-10 Sanyo Electric Co., Ltd. Supercritical refrigerant cycle system
WO2004053406A1 (en) * 2002-12-11 2004-06-24 Bms-Energietechnik Ag Evaporation process control for use in refrigeration technology
WO2004055454A1 (en) * 2002-12-14 2004-07-01 Volkswagen Aktiengesellschaft Coolant circuit for a motor vehicle air conditioning system
DE102004005802A1 (en) * 2004-02-06 2005-08-25 Lauda Dr. R. Wobser Gmbh & Co. Kg. A refrigeration system has an expansion valve by which the refrigerant flow rate is controlled according to the temperature difference between the inlet and outlet of the evaporator
US20070074538A1 (en) * 2005-09-07 2007-04-05 Denso Corporation Refrigeration cycle device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CHEN W ET AL: "Experimental investigation of a minimum stable superheat control system of an evaporator", INTERNATIONAL JOURNAL OF REFRIGERATION, OXFORD, GB, vol. 25, no. 8, December 2002 (2002-12-01), pages 1137 - 1142, XP004388595, ISSN: 0140-7007 *

Also Published As

Publication number Publication date
EP1808655A2 (en) 2007-07-18
DE202006000385U1 (en) 2006-03-02

Similar Documents

Publication Publication Date Title
EP1832822A3 (en) Expansion valve
WO2008054380A3 (en) Economized refrigeration cycle with expander
EP1932696A3 (en) Automotive air conditioner
DE502005011164D1 (en) COLD CIRCUIT AND METHOD FOR OPERATING A COLD CIRCUIT
EP1873466A3 (en) Refrigeration cycle and water heater
WO2008117636A1 (en) Refrigeration cycle apparatus
BR112014029461A2 (en) cooling appliance
EP2119985A3 (en) Tempering unit on a heat pump basis
EP1914491A3 (en) Refrigeration system
EP1717528A3 (en) Refrigeration cycle apparatus
EP2615392A3 (en) Cascade heat pump
EP1818629A3 (en) Compressor cooling system
EP2868999A3 (en) Refrigeration cycle of refrigerator
HK1137051A1 (en) Refrigerating device and method for circulating a refrigerating fluid associated with it
EP2026019A3 (en) Tempering unit on a heat pump basis
CA2510726A1 (en) Vapor compression system with evaporator defrost system
HK1109203A1 (en) Refrigeration circuit
EP1978315A3 (en) Outdoor Unit for Multi-Air Conditioner
EP1808655A3 (en) Refrigeration system
EP2378222A3 (en) Cooling assembly with heat recovery and method for operating the cooling assembly
EP2187149A3 (en) Heat pump assembly
EP2538158A3 (en) Refrigeration and/or freezer device
EP1715263A3 (en) Air conditioning device, in particular for a motor vehicle
EP2080970A3 (en) Refrigeration and/or freezer device
FR2979287B1 (en) REFRIGERANT FLUID CIRCUIT WITH TWO COMPRESSION STAGES AND INTERMEDIATE PRESSURE BOTTLE

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

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

17P Request for examination filed

Effective date: 20070816

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

RIC1 Information provided on ipc code assigned before grant

Ipc: F25B 49/02 20060101ALI20080226BHEP

Ipc: F25B 41/06 20060101ALI20080226BHEP

Ipc: F25B 40/00 20060101AFI20070510BHEP

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20080411