WO2000017588A1 - Systeme de refroidissement a circuit unique - Google Patents

Systeme de refroidissement a circuit unique Download PDF

Info

Publication number
WO2000017588A1
WO2000017588A1 PCT/EP1999/006709 EP9906709W WO0017588A1 WO 2000017588 A1 WO2000017588 A1 WO 2000017588A1 EP 9906709 W EP9906709 W EP 9906709W WO 0017588 A1 WO0017588 A1 WO 0017588A1
Authority
WO
WIPO (PCT)
Prior art keywords
evaporator
refrigerant
circuit
downstream
channel
Prior art date
Application number
PCT/EP1999/006709
Other languages
German (de)
English (en)
Inventor
Wolfgang Nuiding
Berthold Pflomm
Original Assignee
BSH Bosch und Siemens Hausgeräte GmbH
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 BSH Bosch und Siemens Hausgeräte GmbH filed Critical BSH Bosch und Siemens Hausgeräte GmbH
Priority to EP99969485A priority Critical patent/EP1116002B1/fr
Priority to DE59901418T priority patent/DE59901418D1/de
Priority to SI9930083T priority patent/SI1116002T1/xx
Priority to PL346712A priority patent/PL192582B1/pl
Priority to AT99969485T priority patent/ATE217409T1/de
Priority to DK99969485T priority patent/DK1116002T3/da
Publication of WO2000017588A1 publication Critical patent/WO2000017588A1/fr

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
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • F25B39/022—Evaporators with plate-like or laminated elements
    • F25B39/024—Evaporators with plate-like or laminated elements with elements constructed in the shape of a hollow panel
    • 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
    • F25B5/00—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity
    • F25B5/04—Compression machines, plants or systems, with several evaporator circuits, e.g. for varying refrigerating capacity arranged in series
    • 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—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/04—Refrigeration circuit bypassing means
    • F25B2400/0415—Refrigeration circuit bypassing means for the receiver
    • 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—General features or devices for refrigeration machines, plants or systems, combined heating and refrigeration systems or heat-pump systems, i.e. not limited to a particular subgroup of F25B
    • F25B2400/16—Receivers
    • 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
    • F25B45/00—Arrangements for charging or discharging refrigerant
    • 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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
    • F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
    • F25D11/022—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures with two or more evaporators

Definitions

  • the invention relates to a single-circuit refrigeration system with a reservoir which can optionally be switched into its refrigeration circuit by means of deflecting means for receiving refrigerant and at least two evaporators, of which the evaporator which is connected in series in terms of its temperature is controlled by the refrigerant withdrawal using the reservoir.
  • a collector which can be switched into the refrigerant circuit by a solenoid valve is provided on the pressure side of its compressor. This serves to withdraw different amounts of liquid refrigerant from the refrigeration cycle depending on the position of a temperature controller arranged in the refrigerator compartment.
  • the refrigerant circuit has just withdrawn so much refrigerant that the normal refrigeration compartment evaporator located at the end of the series connection of the evaporators is no longer charged with liquid refrigerant, while the fresh refrigeration compartment evaporator located directly in front of it is charged with the refrigerant
  • a tightly tolerated filling quantity of the refrigeration system with liquid refrigerant is necessary, with a functionally very narrow one Tolerance limits prescribed refrigerant quantity when filling the refrigeration circuit requires a very narrow so-called filling width, whereby the filling process of the refrigeration circuit not only requires very precise monitoring with regard to the filling quantity, but also a very fine dosage. The consequence of this is that the filling process is time-consuming and costly.
  • the invention has for its object to improve a single-circuit cooling system according to the preamble of claim 1 with simple constructive measures, in particular with regard to the filling width determined by the minimum and maximum refrigerant charge.
  • the evaporator connected upstream in series has a refrigerant channel arrangement which is at least largely equipped with collecting means which serve to buffer liquid refrigerant.
  • the filling limits of the evaporator system with liquid refrigerant namely the minimum filling quantity required for the intended refrigeration function and the maximum possible filling quantity, are significantly further apart, which significantly increases the filling width of the refrigeration device, so that the evaporator system is filled during the production process large-scale refrigeration unit production can take place in a significantly wider tolerance range and thus in a significantly shorter filling time.
  • the filling width of the evaporator system to be filled can be increased even further if, according to a preferred embodiment of the subject of the invention, it is provided that the collecting means consists of a combination of at least one refrigerant collector and a channel section which is enlarged in terms of its capacity compared to a single channel are.
  • the refrigerant collector and the enlarged channel section are arranged in series, the Refrigerant collector is downstream of the enlarged channel section in the flow direction of the forced refrigerant.
  • the subsequent storage of the refrigerant collector means that the liquid refrigerant is at least largely retained in the upstream evaporator and transport of the liquid refrigerant is prevented by so-called “entrainment” into the downstream evaporator.
  • the refrigerant collector is connected in the flow direction of the forcibly circulated refrigerant, another channel section which is introduced into a refrigerant connecting channel to the downstream evaporator and is enlarged in terms of its capacity.
  • Refrigerant connection channel extends at least in the initial region of the downstream evaporator.
  • This measure in conjunction with the measures taken on the upstream evaporator, namely the creation of a refrigerant collector and that of an enlarged channel section, creates a particularly effective increase in storage space for buffering liquid refrigerant, as a result of which the filling width of the evaporator system with liquid refrigerant can be increased particularly significantly. Furthermore, for each of the two evaporators, an at least largely uniform cold transfer is created over their surface.
  • the evaporators can be produced in a particularly production-friendly manner if, according to a next advantageous embodiment of the object of the invention, it is provided that the evaporators are formed by circuit board sections of an evaporator circuit board produced by the roll-bond or by the Z-bond process.
  • a cooling device with evaporators can be designed particularly expediently if, according to a further preferred embodiment of the object of the invention, it is provided that the evaporators have a different cooling capacity, the downstream evaporator having a lower cooling capacity being designed as a cooling compartment evaporator and the other as a fresh cooling evaporator.
  • the evaporator circuit board comprises three circuit board sections serving as evaporators, of which the one leading in series is designed as a freezer compartment evaporator, the immediately following one as a fresh cooling evaporator and the one downstream as a cooling compartment evaporator. - o -
  • the filling width of the evaporator system with liquid refrigerant be increased at least twice as much as that of the conventional evaporator systems, but also ensure that the refrigeration compartment evaporator in the event that the reservoir for receiving liquid refrigerant is switched within the refrigeration cycle, is not charged with liquid refrigerant and is therefore not cooled as intended.
  • the amount of refrigerant is suitable for maintaining the full cooling capacity on the freezer compartment evaporator.
  • the single figure shows an evaporator board integrated in a single-circuit refrigeration system with three evaporators, of which the fresh cooling compartment evaporator arranged in the series connection of the evaporators between the two evaporators is equipped with collecting means for buffering refrigerant.
  • a simplified circuit diagram shows a single-circuit refrigeration system 10, which has a compressor 11 and a condenser 12, at the output of which a reservoir 13 is provided, which is used to hold liquid refrigerant and which is actuated by a three-way control system, not shown by control electronics.
  • Two-way solenoid valve 14 is switchable in the refrigeration cycle.
  • the solenoid valve 14 is followed by a dryer 15 on its output side, which in turn is followed by a throttle 16 designed as a capillary tube.
  • the capillary tube 16 is fed to a circuit board section 18 belonging to a one-piece evaporator board 17, which in its installed position is designed as a U-shaped angled freezer evaporator, in the ceiling of which one of its legs forms the capillary tube 16 and serves as an injection point 19.
  • the injection point 19 is followed by a refrigerant channel 20, which runs over the surface of the circuit board section 18 and which is a so-called single channel from the ceiling of the freezer compartment evaporator led out and fed via a connecting web 21 which is integrally formed on the evaporator board 17 as a single channel to a board section 22 which is designed as a fresh cooling compartment evaporator and which, in terms of refrigeration technology, is arranged downstream of the board section 18 which is designed as a freezer compartment evaporator.
  • a refrigerant channel 20 which runs over the surface of the circuit board section 18 and which is a so-called single channel from the ceiling of the freezer compartment evaporator led out and fed via a connecting web 21 which is integrally formed on the evaporator board 17 as a single channel to a board section 22 which is designed as a fresh cooling compartment evaporator and which, in terms of refrigeration technology, is arranged downstream of the board section 18 which is designed as a freezer compartment evaporator.
  • a channel section 25 of the refrigerant channel 20 Downstream of the refrigerant collector 24 there is a channel section 25 of the refrigerant channel 20 which is also enlarged in cross section, which is arranged at least to a certain part of its length within the connecting web 21 and which on its inflow side facing the refrigerant collector 24 has a channel part designed as a double channel 26, which is provided exclusively on the connecting web 21.
  • the double channel 26 is brought together in a channel part 27 of the channel section 25, which is similar to the enlarged channel section 23, the channel part 27 being arranged over part of its length within the connecting web 21, while its predominant length section is located within a cooling technology evaporator downstream of the circuit board section 22 Board section 28 is provided.
  • the refrigerant channel 20 is in turn continued as a single channel and returned via the connecting web 21 to the circuit board section 18, where it opens into a suction point 29 in the ceiling section thereof.
  • the invention can also be applied to individual evaporator boards.

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)
  • Earth Drilling (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

L'invention concerne un système de refroidissement à circuit unique (10) qui comprend un réservoir (13) pouvant être connecté de manière facultative à l'aide d'éléments de renvoi (14), dans son circuit de refroidissement, et destiné à contenir des agents réfrigérants, ainsi qu'au moins deux vaporisateurs (22, 28). Un vaporisateur (28) situé en aval dans le montage en série, demeure au moins dans une large mesure exempt d'agent réfrigérant liquide, lorsque le réservoir (13) est sollicité avec de l'agent réfrigérant. Le vaporisateur (22) situé en amont comporte une configuration de canal de refroidissement (20) constituée au moins dans une large mesure d'éléments collecteurs (23, 24) servant à tamponner l'agent réfrigérant.
PCT/EP1999/006709 1998-09-22 1999-09-10 Systeme de refroidissement a circuit unique WO2000017588A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP99969485A EP1116002B1 (fr) 1998-09-22 1999-09-10 Systeme de refroidissement a circuit unique
DE59901418T DE59901418D1 (de) 1998-09-22 1999-09-10 Einkreiskältesystem
SI9930083T SI1116002T1 (en) 1998-09-22 1999-09-10 Single-circuit cooling system
PL346712A PL192582B1 (pl) 1998-09-22 1999-09-10 Jednoobwodowy układ chłodzący
AT99969485T ATE217409T1 (de) 1998-09-22 1999-09-10 Einkreiskältesystem
DK99969485T DK1116002T3 (da) 1998-09-22 1999-09-10 Enkeltkreds-kølesystem

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843484.7 1998-09-22
DE19843484A DE19843484A1 (de) 1998-09-22 1998-09-22 Einkreiskältesystem

Publications (1)

Publication Number Publication Date
WO2000017588A1 true WO2000017588A1 (fr) 2000-03-30

Family

ID=7881869

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1999/006709 WO2000017588A1 (fr) 1998-09-22 1999-09-10 Systeme de refroidissement a circuit unique

Country Status (8)

Country Link
EP (1) EP1116002B1 (fr)
AT (1) ATE217409T1 (fr)
DE (2) DE19843484A1 (fr)
DK (1) DK1116002T3 (fr)
ES (1) ES2177349T3 (fr)
PL (1) PL192582B1 (fr)
TR (1) TR200100664T2 (fr)
WO (1) WO2000017588A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003052331A1 (fr) * 2001-12-19 2003-06-26 BSH Bosch und Siemens Hausgeräte GmbH Machine frigorifique munie d'un collecteur d'agent refrigerant cote refoulement

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR9905700A (pt) * 1999-12-03 2001-09-25 Brasil Compressores Sa Aperfeiçoamento em circuito de refrigeração
DE10053420A1 (de) * 2000-10-27 2002-05-08 Bsh Bosch Siemens Hausgeraete Verdampfer und Kältegerät für ein zeotropes Kältemittelgemisch
DE10055916A1 (de) * 2000-11-10 2002-05-23 Bsh Bosch Siemens Hausgeraete Kaltemittelkreislauf für eine Kältemaschine
DE10145139A1 (de) * 2001-09-13 2003-04-03 Bsh Bosch Siemens Hausgeraete Kältegerät mit zwei Verdampfern
DE102012218700A1 (de) 2012-10-15 2014-04-17 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät
DE102019112093A1 (de) * 2018-07-12 2020-01-16 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2544938A (en) * 1948-03-24 1951-03-13 Nash Kelvinator Corp Refrigerant evaporator
US4007604A (en) * 1975-02-18 1977-02-15 Bosch-Siemens Hausgerate Gmbh Refrigerator unit, particularly dual temperature refrigerator
US4086780A (en) * 1975-09-09 1978-05-02 Bosch-Siemens Hausgerate Gmbh Refrigerating apparatus, in particular two-temperature refrigerator
EP0703421A2 (fr) * 1994-09-21 1996-03-27 Bosch-Siemens Hausgeräte GmbH Armoire frigorifique avec au moins deux compartiments à des températures différentes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2544938A (en) * 1948-03-24 1951-03-13 Nash Kelvinator Corp Refrigerant evaporator
US4007604A (en) * 1975-02-18 1977-02-15 Bosch-Siemens Hausgerate Gmbh Refrigerator unit, particularly dual temperature refrigerator
US4086780A (en) * 1975-09-09 1978-05-02 Bosch-Siemens Hausgerate Gmbh Refrigerating apparatus, in particular two-temperature refrigerator
EP0703421A2 (fr) * 1994-09-21 1996-03-27 Bosch-Siemens Hausgeräte GmbH Armoire frigorifique avec au moins deux compartiments à des températures différentes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003052331A1 (fr) * 2001-12-19 2003-06-26 BSH Bosch und Siemens Hausgeräte GmbH Machine frigorifique munie d'un collecteur d'agent refrigerant cote refoulement
US7520141B2 (en) 2001-12-19 2009-04-21 Bsh Bosch Und Siemens Hausgeraete Gmbh Refrigerating machine with a pressure-side refrigerant header

Also Published As

Publication number Publication date
ES2177349T3 (es) 2002-12-01
DE19843484A1 (de) 2000-03-23
ATE217409T1 (de) 2002-05-15
PL346712A1 (en) 2002-02-25
EP1116002A1 (fr) 2001-07-18
DE59901418D1 (de) 2002-06-13
PL192582B1 (pl) 2006-11-30
DK1116002T3 (da) 2002-08-26
TR200100664T2 (tr) 2001-07-23
EP1116002B1 (fr) 2002-05-08

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