EP0547316A1 - Appareil frigorifique ménager à deux températures et à cycle unique - Google Patents

Appareil frigorifique ménager à deux températures et à cycle unique Download PDF

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Publication number
EP0547316A1
EP0547316A1 EP92117206A EP92117206A EP0547316A1 EP 0547316 A1 EP0547316 A1 EP 0547316A1 EP 92117206 A EP92117206 A EP 92117206A EP 92117206 A EP92117206 A EP 92117206A EP 0547316 A1 EP0547316 A1 EP 0547316A1
Authority
EP
European Patent Office
Prior art keywords
collector
refrigerant
evaporator
collecting space
temperature single
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.)
Granted
Application number
EP92117206A
Other languages
German (de)
English (en)
Other versions
EP0547316B1 (fr
Inventor
Friedrich Dipl.-Ing. Arnold
Roland Renner
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.)
BSH Hausgeraete GmbH
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
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Application filed by Individual filed Critical Individual
Publication of EP0547316A1 publication Critical patent/EP0547316A1/fr
Application granted granted Critical
Publication of EP0547316B1 publication Critical patent/EP0547316B1/fr
Anticipated expiration legal-status Critical
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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
    • 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
    • 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 two-temperature single-circuit cooling device for the household with a room evaporator and a freezer compartment evaporator which has a ceiling, an upright wall and a floor and is connected upstream of the latter and is fluidically connected by refrigerant channels, a collector being provided in the freezer compartment evaporator is equipped with an inflow and an outflow channel, which are higher than its intermittent volume forming the collecting space, which is flowed through by refrigerant flowing from the room evaporator to the freezer evaporator.
  • the aim is to achieve the cooling capacity required for the compartments of different temperatures in the individual compartments with the shortest possible compressor runtime and the lowest possible amount of refrigerant in the refrigerant circuit.
  • the dimensioning of the collector arranged in the freezer compartment is of considerable importance.
  • the volume of the collector When the refrigerant compressor is at a standstill, the volume of the collector must be sufficient to accommodate the refrigerant flowing back from the ceiling area and the upright wall and the liquid refrigerant that may be conveyed from the condenser to the evaporator due to the constant pressure drop to be able to. If the volume of the collector is too small, it can happen that liquid refrigerant flows into the intake manifold, evaporates there and freezes the intake manifold, or in the worst case reaches the refrigerant compressor, where it evaporates and forms ice, which causes the compressor to Restarting could be damaged.
  • the collector In the event that the collector is designed too large, the refrigerant accumulated there during the standstill of the refrigerant compressor is not completely sucked out of the collector when the refrigerant compressor starts up. The amount not extracted does not circulate in the refrigerant circuit, so that it is underfilled. In order to avoid that the refrigerant compressor runs for a disproportionately long time in order to achieve the required cooling capacity, the quantity of refrigerant which does not contribute to the cooling capacity must also be filled into the refrigerant circuit.
  • the invention has for its object to dimensionally and fluidically design the collector for a generic refrigeration device such that its collector, which provides sufficient collecting space for liquid refrigerant when the refrigerant compressor is at a standstill, is completely emptied when the compressor is restarted, and no residue of liquid remains even during the running time of the compressor Forms refrigerant in the collecting space.
  • This object is achieved according to the invention in that flow conditions for the refrigerant by the arrangement of the inflow and outflow connection to the collecting space and by the dimensions of this intermittent collecting space are formed in the collector, which cause a preferential loading of the entire bottom area of the collector by the refrigerant flowing through.
  • the solution according to the invention ensures in a simple manner that the collector is completely emptied when the refrigerant compressor is restarted, so that the required cooling capacity in the refrigeration compartments is achieved with a minimal amount of refrigerant and the shortest possible compressor runtime.
  • the collector is rectangular and is arranged in the upright wall of the freezer evaporator, the longer sides of the rectangle being parallel to the longer sides of the upright wall.
  • Such a solution has the advantage that the volume of the header, without having to make it particularly deep, offers sufficient collecting space for the liquid refrigerant when the refrigerant compressor is at a standstill, as well as the advantage that the pressure fluctuations in the refrigerant circuit that frequently occur during the standstill phase have no influence on the liquid refrigerant in the collector.
  • Flow through the collector is particularly favorable down to its bottom area with refrigerant during operation of the refrigerant compressor if, according to a next advantageous embodiment of the subject matter of the invention, it is provided that the inflow and outflow connections on the higher, longer one Rectangular side of the collector substantially perpendicular to this, are arranged on the lateral edges of the collector.
  • the amount of refrigerant in a refrigerant circuit can be kept particularly low in order to achieve the required cooling capacity if, according to a further preferred embodiment of the object of the invention, it is provided that the longer sides of the rectangular collector in the range from 150 mm to 250 mm and the shorter sides in the range of 40 mm to 80 mm, but the collector preferably has the dimensions 200 mm x 60 mm.
  • the collector is particularly expediently equipped if, according to a further preferred embodiment of the object of the invention, it is provided that the inflow and outflow connections of the collector have the same cross section.
  • the volume of the collector is interrupted by button-like impressions.
  • Such a solution has the advantage that the flow conditions within the collecting space can be influenced in a simple manner.
  • a two-temperature single-circuit refrigerator 10 is shown, which, as usual, is equipped with an overhead freezer compartment 11 and a normal refrigerator compartment 13, which is arranged underneath and is separated from this by a heat-insulating intermediate wall 12.
  • the side walls of the normal cooling compartment 13 are provided with grooves 14 formed in the inner container of the refrigerator 10 for inserting shelves (not shown).
  • the refrigerator 10 equipped with a refrigerant compressor (not shown) is equipped with a defrostable space evaporator 15 assigned to the normal cooling compartment 13 and a U-shaped freezer compartment evaporator 16 assigned to the freezer compartment 11, which has a ceiling 17, an upright wall serving as a rear wall 18 and has a bottom 19, which as the ceiling 17 and bottom 19th serving legs of the U-shaped shape are bent in the same direction from the upright wall 18.
  • the upright wall 18 forms an approximately vertical wall section, while the ceiling 17 and the floor 19 lie approximately horizontally.
  • the refrigerant is guided within the ceiling 17 in a channel part 22, which still merges in the ceiling 17 in a feed channel 23 designed as a double channel, through which the refrigerant reaches the floor 19 via the upright wall 18.
  • the bottom 19 flows through refrigerant in a meandering channel section 24, which still connects in the floor area outside the transition to the upright wall 18 to a discharge channel 25, which is also designed as a double channel, through which the refrigerant flows back into the ceiling 17 via the upright wall 18, where it is guided in a duct section 26 laid in turns (see in particular Fig. 3).
  • the duct section 26 opens into a double-pass duct 27, which is arranged with the major part of its duct length on a web-like connecting bridge 28, which mechanically connects the space evaporator 15 to the freezer compartment evaporator 16 arranged in front of it in the refrigerant circuit and via that of the duct arrangement 29 of the room evaporator 15 is supplied with refrigerant.
  • a further channel 30 which is also double-ended, which is connected upstream to the channel arrangement 29 of the space evaporator 14 and opens into a channel line 31 downstream.
  • the channel line 31, which continues to connect upstream of the suction pipe 20, is interposed in the upright wall 18 with a rectangular collector 32 which interrupts its continuous course, the longer rectangular sides of which run parallel to the longer sides of the upright wall 18 together with the shorter ones Rectangle sides delimit the area of its collecting space 33.
  • the collecting space 33 of the collector 32 is fluidically connected to the channel line 31 by an inlet connection 34 and an outlet connection 35, which are arranged on the higher, longer rectangular side 36 substantially perpendicular to this and at a distance from one another.
  • the distance between the two nozzles 34 and 35 is such that they lie on the lateral edges of the collector 32, the outer contour of which is formed by an extension of the two shorter sides of the rectangle to the higher rectangular side 36, while the nozzle 34 is formed to form the inner contour and 35 the higher-lying rectangle side 36 is pulled up at both ends at a distance from the respective extension of the shorter rectangle side.
  • the collecting space 33 is further equipped with its volume-interrupting button-like impressions 37, through which, together with the arrangement of the inlet connection 34 and the outlet connection 35 to the collecting space 33, and in combination with its dimensions, flow conditions for the refrigerants flowing into the collector 32 from the space evaporator 15 are formed, which bring about a preferential loading of the entire bottom area of the collector 32 by the refrigerant flowing through.
  • buttons-like impressions (37) can be adjusted in size depending on the requirements of the flow conditions in the collecting space (33) of the collector (32).

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
EP92117206A 1991-12-17 1992-10-08 Appareil frigorifique ménager à deux températures et à cycle unique Expired - Lifetime EP0547316B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9115640U DE9115640U1 (de) 1991-12-17 1991-12-17 Zweitemperaturen-Einkreiskühlgerät für den Haushalt
DE9115640U 1991-12-17

Publications (2)

Publication Number Publication Date
EP0547316A1 true EP0547316A1 (fr) 1993-06-23
EP0547316B1 EP0547316B1 (fr) 1997-03-19

Family

ID=6874309

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92117206A Expired - Lifetime EP0547316B1 (fr) 1991-12-17 1992-10-08 Appareil frigorifique ménager à deux températures et à cycle unique

Country Status (3)

Country Link
EP (1) EP0547316B1 (fr)
DE (2) DE9115640U1 (fr)
ES (1) ES2101780T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0732553A2 (fr) * 1995-03-16 1996-09-18 Bosch-Siemens HausgerÀ¤te GmbH Arrangement d'évaporateurs, notamment pour réfrigérateurs domestiques commandés par compresseurs

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4439996C5 (de) * 1994-11-09 2006-08-10 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät
DE19818288B4 (de) * 1998-04-23 2009-04-30 BSH Bosch und Siemens Hausgeräte GmbH Kühlgerät
DE19902043A1 (de) * 1999-01-20 2000-08-03 Aeg Hausgeraete Gmbh Kühl- und/oder Gefriergerät

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE693471C (de) * 1937-06-12 1940-07-11 Aeg Verdampfer, insbesondere fuer Kompressionskaeltemaschinen
US2619811A (en) * 1950-05-02 1952-12-02 Nash Kelvinator Corp Refrigerant evaporator
US2737785A (en) * 1951-10-09 1956-03-13 Admiral Corp Refrigerator evaporator
DE1070199B (de) * 1959-12-03 Robert Bosch Gmbh Stuttgart Kuhlmaschmenverdampfer
US3263440A (en) * 1964-12-14 1966-08-02 Electrolux Ab Refrigeration
FR1527573A (fr) * 1966-06-18 1968-05-31 Bosch Hausgeraete Gmbh évaporateur pour appareils frigorifiques, notamment pour réfrigérateurs ménagers et appareils frigorifiques munis dudit évaporateur
FR2451559A1 (fr) * 1979-03-12 1980-10-10 Schmoele Metall R & G Evaporateur d'une installation frigorifique de preference commandee par un compresseur
DE3703902A1 (de) * 1987-02-09 1988-08-18 Liebherr Hausgeraete Plattenverdampfer fuer kuehl- und gefriergeraete

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1070199B (de) * 1959-12-03 Robert Bosch Gmbh Stuttgart Kuhlmaschmenverdampfer
DE693471C (de) * 1937-06-12 1940-07-11 Aeg Verdampfer, insbesondere fuer Kompressionskaeltemaschinen
US2619811A (en) * 1950-05-02 1952-12-02 Nash Kelvinator Corp Refrigerant evaporator
US2737785A (en) * 1951-10-09 1956-03-13 Admiral Corp Refrigerator evaporator
US3263440A (en) * 1964-12-14 1966-08-02 Electrolux Ab Refrigeration
FR1527573A (fr) * 1966-06-18 1968-05-31 Bosch Hausgeraete Gmbh évaporateur pour appareils frigorifiques, notamment pour réfrigérateurs ménagers et appareils frigorifiques munis dudit évaporateur
FR2451559A1 (fr) * 1979-03-12 1980-10-10 Schmoele Metall R & G Evaporateur d'une installation frigorifique de preference commandee par un compresseur
DE3703902A1 (de) * 1987-02-09 1988-08-18 Liebherr Hausgeraete Plattenverdampfer fuer kuehl- und gefriergeraete

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0732553A2 (fr) * 1995-03-16 1996-09-18 Bosch-Siemens HausgerÀ¤te GmbH Arrangement d'évaporateurs, notamment pour réfrigérateurs domestiques commandés par compresseurs
EP0732553A3 (fr) * 1995-03-16 1996-10-02 Bosch-Siemens HausgerÀ¤te GmbH Arrangement d'évaporateurs, notamment pour réfrigérateurs domestiques commandés par compresseurs

Also Published As

Publication number Publication date
DE59208235D1 (de) 1997-04-24
ES2101780T3 (es) 1997-07-16
EP0547316B1 (fr) 1997-03-19
DE9115640U1 (de) 1992-02-13

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