EP1890095A2 - Système de refroidissement - Google Patents

Système de refroidissement Download PDF

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Publication number
EP1890095A2
EP1890095A2 EP07014955A EP07014955A EP1890095A2 EP 1890095 A2 EP1890095 A2 EP 1890095A2 EP 07014955 A EP07014955 A EP 07014955A EP 07014955 A EP07014955 A EP 07014955A EP 1890095 A2 EP1890095 A2 EP 1890095A2
Authority
EP
European Patent Office
Prior art keywords
evaporator
compressor
cooling system
unit
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Withdrawn
Application number
EP07014955A
Other languages
German (de)
English (en)
Other versions
EP1890095A3 (fr
Inventor
Matthias Leipoldt
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1890095A2 publication Critical patent/EP1890095A2/fr
Publication of EP1890095A3 publication Critical patent/EP1890095A3/fr
Withdrawn legal-status Critical Current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
    • F25B31/00—Compressor arrangements
    • F25B31/006—Cooling of compressor or motor
    • 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
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • F25B41/22—Disposition of valves, e.g. of on-off valves or flow control valves between evaporator and compressor
    • 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
    • F25B2600/02—Compressor control
    • F25B2600/026—Compressor control by controlling unloaders
    • F25B2600/0261—Compressor control by controlling unloaders external to the compressor
    • 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
    • F25B2700/04—Refrigerant level
    • 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
    • F25B2700/2115—Temperatures of a compressor or the drive means therefor
    • 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
    • F25B2700/21171—Temperatures of an evaporator of the fluid cooled by the evaporator
    • F25B2700/21173—Temperatures of an evaporator of the fluid cooled by the evaporator at the outlet

Definitions

  • the invention relates to a system for cooling preferably liquid cooling or working media, as used in machine tools, wherein the field of application of such a cooling system not only limited thereto, but it can also other media, such as air conditions in certain rooms, for example in Climatic chambers are cooled to a predetermined temperature level.
  • the cooling system according to the invention is especially useful where the temperature level must be maintained with a very high accuracy.
  • Cooling systems are well known in a very diverse and constructive embodiments in the use of the main assemblies evaporator, compressor and condenser of the refrigerant used.
  • the present invention is based on the object to provide an improved cooling system, with which a predetermined temperature level can be kept in a very small tolerance field.
  • this object is achieved in that the evaporator unit, consisting of the evaporator and an associated with this suction suction collecting bottle, is completely filled with the refrigerant and for the level sensor for the control of the level of the refrigerant in the evaporator unit a tuning fork switch is arranged, wherein a Saugdruckreglerventil is provided for the opening or closing of the evaporator unit.
  • Another advantage is that in the structural design, a system for the realization of a post-injection is provided.
  • a small amount of liquid refrigerant is supplied to this hot gas flow via a post-injection valve, which is operated by a temperature sensor for detecting the temperature of the compressor housing.
  • this small amount of refrigerant vaporizes, i. H. the bypass gas stream is cooled so that it can be kept at a certain temperature level.
  • Figure 1 shows a schematic diagram of the cooling system in the form of a block diagram.
  • the entire cooling system based on the existing temperature level of the medium to be cooled, via the control device, consisting of the temperature detection 11 and the control unit 9 out until the medium to be cooled has reached the predetermined target temperature level.
  • the compressed gaseous refrigerant flow is passed to the condenser 8 and condensed in this back into the liquid state.
  • bypass regulator valve 6 will now take effect.
  • This bypass regulator valve 6 is controlled accordingly via the control unit 10, wherein measured here on the suction side of the applied pressure and before the compressor 7, an approximately constant pressure is set.
  • the current temperature is detected at the compressor 7 and the Nacheinspritzventil 3 is opened when a predetermined target temperature is exceeded.
  • a smaller amount of refrigerant is fed from the collector 5 via the Nacheinspritztechnisch 2 the existing bypass hot gas stream, wherein a calming section is passed, in which the nacheinzuspritzende refrigerant is transferred from the liquid to the gaseous state.
  • a level sensor 13 is provided, which controls the valve 14.
  • This valve 14 is provided after the condenser 8 and leads the liquefied refrigerant, after a corresponding opening signal from the level sensor 13, back to the evaporator first

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)
EP07014955A 2006-08-09 2007-07-31 Système de refroidissement Withdrawn EP1890095A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006037385A DE102006037385A1 (de) 2006-08-09 2006-08-09 Kühlsystem

Publications (2)

Publication Number Publication Date
EP1890095A2 true EP1890095A2 (fr) 2008-02-20
EP1890095A3 EP1890095A3 (fr) 2010-11-24

Family

ID=38654604

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07014955A Withdrawn EP1890095A3 (fr) 2006-08-09 2007-07-31 Système de refroidissement

Country Status (2)

Country Link
EP (1) EP1890095A3 (fr)
DE (1) DE102006037385A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009112047A1 (fr) * 2008-03-11 2009-09-17 Matthias Leipoldt Procédé et installation pour la filtration et/ou le refroidissement de fluides d'usinage
CN112611032A (zh) * 2020-12-15 2021-04-06 青岛海信日立空调系统有限公司 一种中央空调系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3824802A (en) * 1973-07-11 1974-07-23 Gen Motors Corp Control means for accumulator throttling device
WO1999010686A1 (fr) * 1997-08-21 1999-03-04 Zexel Corporation Cycle de refroidissement
EP1215452A1 (fr) * 2000-12-16 2002-06-19 Eaton Fluid Power GmbH Appareil frigorifique avec régulation de la température de surchauffe à l'avant du compresseur
JP2002333220A (ja) * 2001-05-09 2002-11-22 Kubota Corp 圧縮式ヒートポンプ
US20050086957A1 (en) * 2003-10-28 2005-04-28 Alexander Lifson Refrigerant cycle with operating range extension

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3824802A (en) * 1973-07-11 1974-07-23 Gen Motors Corp Control means for accumulator throttling device
WO1999010686A1 (fr) * 1997-08-21 1999-03-04 Zexel Corporation Cycle de refroidissement
EP1215452A1 (fr) * 2000-12-16 2002-06-19 Eaton Fluid Power GmbH Appareil frigorifique avec régulation de la température de surchauffe à l'avant du compresseur
JP2002333220A (ja) * 2001-05-09 2002-11-22 Kubota Corp 圧縮式ヒートポンプ
US20050086957A1 (en) * 2003-10-28 2005-04-28 Alexander Lifson Refrigerant cycle with operating range extension

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009112047A1 (fr) * 2008-03-11 2009-09-17 Matthias Leipoldt Procédé et installation pour la filtration et/ou le refroidissement de fluides d'usinage
CN112611032A (zh) * 2020-12-15 2021-04-06 青岛海信日立空调系统有限公司 一种中央空调系统

Also Published As

Publication number Publication date
EP1890095A3 (fr) 2010-11-24
DE102006037385A1 (de) 2008-02-14

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