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WO2006021351A1 - Dispositif de controle du niveau de refrigerant dans un systeme refrigerant ou de climatisation - Google Patents

Dispositif de controle du niveau de refrigerant dans un systeme refrigerant ou de climatisation Download PDF

Info

Publication number
WO2006021351A1
WO2006021351A1 PCT/EP2005/008876 EP2005008876W WO2006021351A1 WO 2006021351 A1 WO2006021351 A1 WO 2006021351A1 EP 2005008876 W EP2005008876 W EP 2005008876W WO 2006021351 A1 WO2006021351 A1 WO 2006021351A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
evaporator
monitoring
refrigerant
refrigeration
Prior art date
Application number
PCT/EP2005/008876
Other languages
German (de)
English (en)
Inventor
Christian Kerschl
Original Assignee
Daimlerchrysler Ag
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 Daimlerchrysler Ag filed Critical Daimlerchrysler Ag
Publication of WO2006021351A1 publication Critical patent/WO2006021351A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00978—Control systems or circuits characterised by failure of detection or safety means; Diagnostic methods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
    • B60H1/00792—Arrangement of detectors
    • 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
    • F25B49/005—Arrangement or mounting of control or safety devices of safety devices
    • 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

Definitions

  • the invention relates to a device for monitoring the refrigerant level of a refrigeration or air conditioning.
  • a filling quantity of a refrigeration cycle is determined by determining the subcooling present at the condenser outlet. This requires pressure and temperature measurements with appropriate sensors to help identify hypothermia and protect the system from major damage.
  • a device for monitoring the refrigerant level of a refrigeration or air conditioning in such a way that larger refrigerant losses can be determined without the need for additional sensors for determining the supercooling in the refrigeration cycle based on the sensors already present in the vehicle.
  • This object is achieved by a device for monitoring the refrigerant level of a refrigeration and air conditioning with the features of claim 1.
  • Fig. 1 is a diagram of a device according to the invention for
  • Air conditioning and Fig. 2 shows a course of a temperature distribution at the
  • 1 denotes the entire air conditioner.
  • 2 denotes an evaporator, depending on the An occupant selected operating mode "circulating air” or “fresh air” either recirculated air or fresh air can be supplied.
  • the evaporator 2 is connected to a refrigerant circuit 3.
  • an expansion device 2a is formed before the entry of the refrigerant circuit 3 in the evaporator 2.
  • a Blasluftsler 7 is formed in each air channel 6, in which the air distributor 5 branches in.
  • the Blas povertyler 7 are connected to an analysis device 8, which compares the output signals of the individual Blasluftryler 7 taking into account the air distribution with each other and determines temperature differences and draws conclusions on the degree of filling of the refrigeration cycle based on the determined temperature differences.
  • the analysis device 8 determines from the output signals of the Blas Kunststoffenler 7 temperature differences and pulls it Conclusions about existing inhomogeneities in the temperature distribution on the surface of the evaporator 2. It then outputs, in the case of a detected inhomogeneity of the temperature distribution, a signal to a control device, which then eg taking into account a blower power, an outside temperature, a vehicle interior temperature, an evaporator temperature , a mode of operation fresh air / recirculation mode, a control of the refrigerant compressor can cause a shutdown of the refrigeration circuit in order to protect against damage occurring in the event of overheating, such as oil circulation.
  • a control device eg taking into account a blower power, an outside temperature, a vehicle interior temperature, an evaporator temperature , a mode of operation fresh air / recirculation mode

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

L'invention concerne un dispositif de contrôle du niveau de réfrigérant d'un système réfrigérant ou de climatisation comprenant un évaporateur (2) auquel peut être amené soit de l'air de circulation, soit de l'air frais, suivant le mode de climatisation choisi par le passager, un circuit réfrigérant (3) relié à l'évaporateur (2), un dispositif d'expansion (2a) étant prévu en amont de l'entrée dudit circuit réfrigérant (3) dans l'évaporateur (2), un échangeur thermique de chauffage (4) monté en aval de l'évaporateur, et un distributeur d'air (5) se ramifiant à l'intérieur en au moins deux conduits d'air (6). L'invention est caractérisée en ce qu'un capteur d'air soufflé (7) est configuré dans chacun des conduits d'air (6), en ce qu'il est prévu un dispositif d'analyse (8) auquel est envoyé un signal de sortie du capteur d'air soufflé (7), en ce que les signaux de sortie des capteurs d'air individuels (7) sont comparés entre eux, et les différences de température sont déterminées, et en ce qu'au moyen des différences de température déterminées, on peut déduire des informations relatives au degré de remplissage du circuit réfrigérant. C'est ainsi qu'on peut détecter des inhomogénéités dans la répartition de température à la surface de l'évaporateur, lesquelles se reflètent dans l'air d'échappement sollicitant directement les capteurs d'air soufflé dans les conduits d'air.
PCT/EP2005/008876 2004-08-21 2005-08-16 Dispositif de controle du niveau de refrigerant dans un systeme refrigerant ou de climatisation WO2006021351A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410040570 DE102004040570B3 (de) 2004-08-21 2004-08-21 Vorrichtung zur Überwachung des Kältemittelfüllstands einer Kälte- oder Klimaanlage
DE102004040570.0 2004-08-21

Publications (1)

Publication Number Publication Date
WO2006021351A1 true WO2006021351A1 (fr) 2006-03-02

Family

ID=35229783

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/008876 WO2006021351A1 (fr) 2004-08-21 2005-08-16 Dispositif de controle du niveau de refrigerant dans un systeme refrigerant ou de climatisation

Country Status (2)

Country Link
DE (1) DE102004040570B3 (fr)
WO (1) WO2006021351A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010037464A1 (fr) * 2008-10-01 2010-04-08 Bayerische Motoren Werke Aktiengesellschaft Procédé de commande ou de régulation d'un système de conditionnement d'air de véhicule

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020111744A1 (de) 2020-04-30 2021-11-04 Bayerische Motoren Werke Aktiengesellschaft Verfahren zur bestimmung eines funktionszustands einer klimatisierungsvorrichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5713213A (en) * 1995-12-22 1998-02-03 Denso Corporation Refrigeration cycle device having accurate refrigerant deficiency detection capability
US20020083723A1 (en) * 2000-12-11 2002-07-04 Walter Demuth Method of monitoring refrigerant level
US6446505B1 (en) * 1999-07-27 2002-09-10 Daimlerchrysler Ag Method for monitoring the refrigerant filling level in refrigerating system
US20040083744A1 (en) * 2002-11-04 2004-05-06 Visteon Global Technologies, Inc. Low-charge leak detection strategy for dual automatic temperature control system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US650867A (en) * 1900-01-23 1900-06-05 Hans Merke Werzinger Automatic grooved-rail clearer for street-railways.
JP3316982B2 (ja) * 1993-01-13 2002-08-19 株式会社デンソー 空気調和装置
JPH10122711A (ja) * 1996-10-18 1998-05-15 Matsushita Electric Ind Co Ltd 冷凍サイクル制御装置
DE19916559A1 (de) * 1999-04-13 2000-10-19 Fahrzeugklimaregelung Gmbh Verfahren zum Regeln der Innenraum-Temperatur eines Kraftfahrzeuges mit einer Heizungs-/Klimaanlage

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5713213A (en) * 1995-12-22 1998-02-03 Denso Corporation Refrigeration cycle device having accurate refrigerant deficiency detection capability
US6446505B1 (en) * 1999-07-27 2002-09-10 Daimlerchrysler Ag Method for monitoring the refrigerant filling level in refrigerating system
US20020083723A1 (en) * 2000-12-11 2002-07-04 Walter Demuth Method of monitoring refrigerant level
US20040083744A1 (en) * 2002-11-04 2004-05-06 Visteon Global Technologies, Inc. Low-charge leak detection strategy for dual automatic temperature control system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010037464A1 (fr) * 2008-10-01 2010-04-08 Bayerische Motoren Werke Aktiengesellschaft Procédé de commande ou de régulation d'un système de conditionnement d'air de véhicule

Also Published As

Publication number Publication date
DE102004040570B3 (de) 2006-03-30

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