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—Component parts or details not otherwise provided for in this subclass
  • F25B2400/04—Refrigeration circuit bypassing means
  • F25B2400/0415—Refrigeration circuit bypassing means for 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
  • F25B2400/00—Component parts or details not otherwise provided for in this subclass
  • 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 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 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.
• 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.

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)

Priority Applications (1)

Applications Claiming Priority (3)

Publications (2)

Family

ID=7881869

Family Applications (1)

Country Status (8)

Families Citing this family (7)

Family Cites Families (4)

• 1998
  • 1998-09-22 DE DE19843484A patent/DE19843484A1/de not_active Withdrawn
• 1999
  • 1999-09-10 WO PCT/EP1999/006709 patent/WO2000017588A1/fr not_active Ceased
  • 1999-09-10 AT AT99969485T patent/ATE217409T1/de not_active IP Right Cessation
  • 1999-09-10 TR TR2001/00664T patent/TR200100664T2/xx unknown
  • 1999-09-10 EP EP99969485A patent/EP1116002B1/fr not_active Expired - Lifetime
  • 1999-09-10 DK DK99969485T patent/DK1116002T3/da active
  • 1999-09-10 PL PL346712A patent/PL192582B1/pl not_active IP Right Cessation
  • 1999-09-10 ES ES99969485T patent/ES2177349T3/es not_active Expired - Lifetime
  • 1999-09-10 DE DE59901418T patent/DE59901418D1/de not_active Expired - Lifetime

Non-Patent Citations (1)

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