EP1644677B1 - Absorptionskühlvorrichtung mit eiserzeuger - Google Patents

Absorptionskühlvorrichtung mit eiserzeuger Download PDF

Info

Publication number
EP1644677B1
EP1644677B1 EP04749097A EP04749097A EP1644677B1 EP 1644677 B1 EP1644677 B1 EP 1644677B1 EP 04749097 A EP04749097 A EP 04749097A EP 04749097 A EP04749097 A EP 04749097A EP 1644677 B1 EP1644677 B1 EP 1644677B1
Authority
EP
European Patent Office
Prior art keywords
tube section
ice
tube
compartment
evaporator
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.)
Expired - Lifetime
Application number
EP04749097A
Other languages
English (en)
French (fr)
Other versions
EP1644677A1 (de
Inventor
Anders Bengt Ingemar Hallin
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.)
Dometic Sweden AB
Original Assignee
Dometic Sweden AB
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 Dometic Sweden AB filed Critical Dometic Sweden AB
Publication of EP1644677A1 publication Critical patent/EP1644677A1/de
Application granted granted Critical
Publication of EP1644677B1 publication Critical patent/EP1644677B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F25B39/026—Evaporators specially adapted for sorption type systems
    • 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
    • F25D11/027—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures of the sorption cycle type
    • 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
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C1/00—Producing ice
    • F25C1/04—Producing ice by using stationary moulds
    • 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
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C2400/00—Auxiliary features or devices for producing, working or handling ice
    • F25C2400/10—Refrigerator units
    • 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
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C5/00—Working or handling ice
    • F25C5/02—Apparatus for disintegrating, removing or harvesting ice
    • F25C5/04—Apparatus for disintegrating, removing or harvesting ice without the use of saws
    • F25C5/08—Apparatus for disintegrating, removing or harvesting ice without the use of saws by heating bodies in contact with the ice
    • 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
    • F25D2321/00—Details or arrangements for defrosting; Preventing frosting; Removing condensed or defrost water, not provided for in other groups of this subclass
    • F25D2321/14—Collecting condense or defrost water; Removing condense or defrost water
    • F25D2321/141—Removal by evaporation
    • F25D2321/1413—Removal by evaporation using heat from electric elements or using an electric field for enhancing removal
    • 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
    • F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
    • F25D2400/30—Quick freezing

Definitions

  • the present invention relates to an absorption refrigerator including; a cabinet having outer walls and at least one door encasing a low temperature storage compartment and a higher temperature storage compartment, said compartments being separated by a partition wall, a device for ice fabrication, and an absorption refrigerating system including an evaporator tube in which a refrigeration medium flows from an upstream end to a downstream end of the evaporator tube, and which evaporator tube comprises a first tube section which is arranged to absorb heat from the low temperature compartment, a second tube section, which is arranged to absorb heat from the higher temperature compartment and a third tube section which is arranged to absorb heat from the ice fabrication device, wherein the first, second and third tube sections are connected in series and the first tube section is arranged upstream of the second tube section, which third tube section is arranged to predominantly absorb heat from the ice fabrication device by heat conduction.
  • a refrigerator is known from US-A-4,147,039 .
  • Such absorption refrigerators are commonly used e.g. in recreation vehicles, mobile homes or at homes were AC power supply is not available at all times.
  • the lower temperature compartment is a freezer, which at modern absorption refrigerators normally is maintained at -18 °C.
  • the freezer also accommodates the device for fabrication of ice, often referred to as the ice-maker.
  • the ice maker may in it's simplest form be an ice-cube container but it may also comprise more sophisticated devices with means for automatic water supply and ice harvesting means including mechanical members and electrical heating elements.
  • the higher temperature compartment is normally maintained at around +5 °C and could be referred to as a refrigerator compartment.
  • the evaporator tube includes an upstream tube section, which is dedicated for cooling the ice-maker. Downstream of this ice-maker tube section and in direct connection to its downstream end, an intermediate tube section is arranged for cooling the freezer. Downstream of the freezer section, a downstream refrigerator section of the evaporator tube is arranged for cooling the higher temperature refrigerator compartment. At some applications both the freezer and the ice-maker are cooled together by one single evaporator tube section which is arranged upstream of the refrigerator tube section.
  • US 4,147,039 discloses an arrangement wherein a straight portion of a low temperature evaporator is connected to an ice dividing wall of an ice tray.
  • the evaporator may be provided with various types of heat conducting members for conducting heat from the items to be cooled, i.e. the freezer and refrigerator compartments and the ice maker, to the respective evaporator tube sections.
  • the ice-maker section of the evaporator may be provided with a heat conducting plate, which is arranged to support the ice-cube fabrication container and which conducts heat from the container to the ice-maker section of the evaporator.
  • the freezer and refrigerator sections may be provided with flanges or baffles, which conduct heat from the air in the freezer and refrigerator compartments to the evaporator freezer and refrigerator section respectively.
  • the evaporator tube sections and/or the respective heat conducting members may further be provided with means for defrosting.
  • defrosting means may comprise heating means such as an electrically heated film which is activated at regular intervals or when the build up of frost has reached a certain level. Upon activation of the heated film frost is melted.
  • the evaporator reaches its lowest evaporation temperature at the upstream end. Downstream of the upstream end, the evaporation temperature rises gradually when the cooling medium in the evaporator tub absorbs heat from the ice-maker, freezer compartment and refrigerator compartment.
  • a problem at this known type of absorption refrigerator is that it is difficult to achieve a high enough cooling power of the refrigeration system to maintain the freezer compartment at the low temperature which is desired. As mentioned above, it is often desired to keep the temperature in the freezer compartment as low as approximately -18 °C.
  • the total cooling power of the absorption refrigerating apparatus is, among other factors, limited by the heat transfer capacity of the evaporator, which in turn depends on the total length of the evaporator tube. This length in turn, is limited by the dimensions of the refrigerator cabinet and by the fact that the evaporator tube needs to be designed with a downward inclination over its entire length, from the upstream to the downstream end.
  • the evaporation temperature of the refrigeration medium is normally approximately -30 °C.
  • the ice-maker section of the evaporator absorbs heat from the ice-maker. This heat absorption rises the evaporation temperature of the refrigeration medium so that it, at the entrance of the freezer section of the evaporator tube, is approximately -24 °C and at the exit approximately -20 °C.
  • the average driving temperature difference between the desired freezer temperature and the evaporation temperature of the refrigeration medium would then be only about 2 °C.
  • Such a small driving temperature difference makes it impossible to bring down the freezer to the desired temperature, especially when additional heat enters into the freezer, e.g. due to opening of the freezer door, placement of non-frozen items in the freezer or due to inward heat transfer through the cabinet walls.
  • this problem is further increased.
  • the ice-container is heated by an electrical heating element.
  • the heat supplied to, and absorbed by the refrigeration medium in the ice-maker section of the evaporator tube is further increased.
  • the cooling capacity available at the freezer evaporator section, downstream of the ice-maker evaporator section is thus further reduced during automatic harvesting of ice.
  • the temperature in the freezer compartment rises between 6-9 °C during operation of such automatic ice-makers. Also at the type of absorption refrigerators, where the ice manufacturing device and the freezer compartment are cooled by one and the same evaporator tube section, the same negative influence of the ice-maker on the cooling capacity in the freezer compartment applies.
  • a further problem associated with ice-makers and particularly with automatic ice-makers is the humidity which is transferred from the ice-maker to the air in the refrigerator during supply of water and during heating the ice prior to harvesting.
  • the humidity which is transferred to the air during water supply and heating does to a large extent contribute to the formation of frost on the cool surfaces, i.e. the evaporators or the heat conducting members arranged in the compartments or spaces with which air coming in contact with the ice-maker communicates.
  • frost on the cool surfaces i.e. the evaporators or the heat conducting members arranged in the compartments or spaces with which air coming in contact with the ice-maker communicates.
  • Another object is to provide such an absorption refrigerator at which it is possible to use sophisticated ice-making devices including heating elements without adversely affecting the cooling capacity of the freezer compartment.
  • a still further object is to provide such an absorption refrigerator at which the negative effects caused by the humidity load generated by the ice-maker may be prevented or reduced by utilizing the defrosting means associated with the freezer evaporator or the refrigerator evaporator.
  • refrigerator the third tube section is arranged downstream of said first tube section and upstream of said second tube section and in which the ice fabrication device is exposed to air circulating in the low temperature compartment, wherein means are provided for melting frost generated by humidity in said low temperature compartment or said higher temperature compartment respectively.
  • the first evaporator tube section which absorbs heat from the freezer compartment is arranged the most upstream of the three sections.
  • that section of the evaporator tube which exhibits the lowest evaporation temperature cools the item, which needs to be maintained at the lowest temperature, i.e. the freezer compartment.
  • the greatest possible driving temperature difference is used for maintaining the freezer compartment at the desired temperature.
  • the ice-manufacturing device needs to be kept only at about -10 °C for sufficiently quick freezing of water to ice, the increase of the evaporation temperature, which the refrigeration medium undergoes during its absorption of heat in the freezer tube section of the evaporator does not adversely affect the capability of the ice-maker section to maintain the ice-maker at a sufficiently low temperature.
  • the refrigerator compartment in turn, needs only to be kept at about +5 °C. Therefore, the increase of the evaporation temperature, which the refrigeration medium undergoes during its passage through the ice-maker section of the evaporator does not adversely affect the ability of the refrigeration section to maintain the refrigeration compartment at the desired temperature.
  • the ice fabrication device Since the ice fabrication device is exposed to air circulating in the low or higher temperature compartment, it is further guaranteed that the humidity load caused by the ice-maker and absorbed by the air will be circulated to pass the freezer or refrigerator evaporator or its heat conducting means such that the frost resulting by this humidity may be defrosted by defrosting means associated with the freezer or refrigerator evaporator. By this means, no additional defrosting means needs to be provided for taking care of frost caused by the excessive humidity load added by the ice-maker.
  • a side-by-side absorption refrigerator 1 is shown.
  • the cabinet includes a rear wall 2, two side walls 3, 4, a top-wall 5 and a bottom-wall 6. These outer walls 2-6, together with two front doors 7, 8 enclose a low temperature storage compartment 9 and a higher temperature storage compartment 10.
  • the outer walls 2-6 and the front doors 7, 8 all include an outer and an inner shell between which heat insulating material, such as polyurethane foam, is arranged.
  • the two compartments 9, 10 are hermetically sealed from each other by a vertical partition wall 11, which extends perpendicular to and from the rear wall 2, between the rear wall 2 and the front of the cabinet 1, in such away that the doors 7 and 8, when closed, sealingly rest against the front of the partition wall 11.
  • the freezer compartment 9 is thus defined by the (in fig. 1 ) left front door 7, the partition wall 11, the side wall 3, and respective portions 2a, 5a, and 6a of the rear wall, top wall and bottom wall.
  • the higher temperature compartment 10 is analogously defined by the (in fig. 1 ) right front door 8, the partition wall 11, the side wall 4, and respective portions 2b, 5b, 6b of the rear wall, top wall and bottom wall.
  • the partition wall is placed approximately 1/3 of the total width of the cabinet from one side-wall 3, so that the width-relationship between the freezer compartment 9 and the refrigerator compartment is approximately 1:2.
  • the temperature in the freezer compartment is normally kept at about -18 °C, whereas the higher temperature compartment normally is kept at about +5 °C.
  • the higher temperature compartment 10 could also be referred to as a refrigerator compartment.
  • An absorption refrigerator system including a conventional boiler, condenser, and absorber (neither of which is shown) is arranged at the back of the cabinet, outside the rear wall 2.
  • the refrigerator system also includes an evaporator, generally indicated by reference number 20.
  • the evaporator 20 is formed of an evaporator tube, which includes a first evaporator tube section 21 for cooling the freezer compartment and a second evaporator tube section 22 for cooling the higher temperature compartment 10.
  • the first section 21 is arranged inside the freezer compartment 9 and the second section 22 inside the higher temperature compartment 10.
  • the evaporator tube 20 also includes a third tube section 23 for cooling a device (not shown) for fabrication of ice, hereinafter referred to as an ice-maker.
  • the ice-maker may in its simplest form be an ice-cube container, which is placed onto the third evaporator section. It may however also be a more sophisticated automatic device, including means for automatic water supply, mechanical means for harvesting and crushing the ice as well as electrical heating elements for partially melting the ice prior to harvesting. Regardless of which type of ice maker is used, it is arranged such that the predominant amount of heat, which is removed from the water during the fabrication of ice, is conducted to the third section of the evaporator.
  • the three evaporator sections 21, 22 and 23 are arranged in series such that the evaporator tube is formed by one single continuous tube, which includes the three sections, one after the other.
  • the first section 21 for cooling the freezer is arranged the most upstream.
  • the third section 23 for cooling the ice-maker is arranged directly downstream of the first section.
  • the second section 22 for cooling the refrigerator is arranged downstream of the third section 23.
  • a first conduit 25 supplies the coolant, such as liquid ammonium, from the condenser to the evaporator 20.
  • a second conduit 26 supplies poor gas from the absorber.
  • the first evaporator tube section 21 is arranged immediately downstream of the upstream end 24 of the evaporator.
  • the first evaporator section 21 comprises four generally straight tube portions 21a, which are connected, one after the other through three tube bends 21b.
  • the straight tube portions 21a and the tube bends 21b are arranged vertically, one over the other, generally in the same vertical plane.
  • a further tube bend 21c connects the lowest straight tube portion with a further straight tube portion 21d, which extends generally perpendicular to the vertical plane defined by the four straight tube portions 21a, in proximity to the rear wall 2 of the cabinet.
  • the third section 23 of the evaporator is connected to the first section through a tube bend 27.
  • the third section 23 is generally U-shaped and includes two generally straight tube portions 23a connected with each other by a tube bend 23b.
  • the U-shaped third section 23 is arranged generally horizontal, whereby the two straight tube portions 23a and the tube bend 23b are arranged in the same general horizontal plane.
  • the third evaporator section 23 is connected to a passive evaporator section 28.
  • the passive section 28 extends inside the rear wall 2 at a slight downward slope, past the partition wall 11 This passive section 28 does not absorb heat from any of the two compartments. However, it functions as a heat exchanger absorbing heat from the mediums in the conduits 25 and 26.
  • the passive tube section 28 is connected to the upstream end of the second evaporator section 22 at a lead-through 30 in the refrigerator portion 2b of the rear wall 2.
  • the second evaporator section 22 includes two generally straight tube portions 22a, which are arranged, one over the other, generally in the same vertical plane and connected by a tube bend 22b.
  • a lead-through 31 leads the evaporator tube into the rear wall 2, where the evaporator tube, together with the coolant supply conduit 25 is connected to a co-axial gas heat exchanger tube 32.
  • the co-axial tube 32 extends in the rear wall 2, in a generally U-shaped manner and exits through the outer shell of the rear wall.
  • the co-axial tube is connected to the absorber of the refrigerating apparatus (not shown).
  • the temperature of the refrigeration medium at the upstream end 24 of the first evaporator section 21 is typically maintained at approx. -30 °C.
  • the coolant temperature has typically risen to approx. -24 °C.
  • the refrigeration medium temperature is raised to approximately - 20 °C.
  • the temperature of the refrigeration medium increases due to absorption of heat from the adjacent conduits 25, 26, whereby the temperature at the upstream end of the second evaporator section 22 is about -16 °C.
  • the coolant temperature is typically raised to approx. -12 °C.
  • the different temperatures described above vary over the working cycle of the ice-maker and depending on external conditions as well as customer use. The exemplifying values are given for illustrating a typical operation situation.
  • baffled baffle elements 34, 35 of a heat conducting material are attached to the respective evaporator section.
  • the baffle elements 34, 35 exhibit a generally comb-shaped transverse section and include a base and a plurality of flanges having a vertical longitudinal direction.
  • the flanged baffle element 34 arranged in the freezer compartment 9 is further provided with defrosting means (not shown).
  • defrosting means comprises an electrical heater.
  • the electrical heater is activated at regular intervals for melting frost, which has been formed on the baffle element.
  • the heater may also be activated when the formation of frost on the baffle element 34 has reached a certain thickness.
  • the ice-maker and the baffle element 34 are arranged within the same space, such that air which is exposed to the ice-maker during circulation will pass the baffle element 34. Since this baffle element 34 constitutes the coolest area within the delimited space in which this air may circulate, any humidity absorbed by this air from the ice-maker will form on this baffle element 34. Thereby, all frost caused by the humidity generated by the ice-maker will be defrosted during regular defrosting of the freezer compartment 9.
  • the baffle element 34, the freezer evaporator 21, the ice-maker and the ice-maker section 23 of the evaporator are all arranged within the same compartment. This must however not be the case as long as the air is able to circulate between the ice-maker and the freezer evaporator or refrigerator evaporator or the heat conducting element associated with the freezer evaporator or refrigerator evaporator respectively, whichever is provided with means for defrosting frost which is caused by humidity present in the low temperature compartment or the higher temperature compartment.
  • the freezer evaporator tube section and the ice-maker evaporator tube section are arranged embedded in the rear wall of the cabinet.
  • the freezer tube section of the evaporator is connected to a baffle element which is arranged in a first space and which comprises defrosting means, while the ice-maker is arranged in the freezer compartment which is formed in a second remotely arranged space.
  • a heat transferring plate or a heat pipe is arranged between the ice-maker and the ice-maker evaporator tube section.
  • Air ducts are further provided between the first and second spaces such that air may circulate between these two spaces.
  • the freezer compartment is always cooled by the coolest part of the evaporator, which part also has the lowest evaporation temperature of the refrigerant medium.
  • the driving temperature difference between the air in the freezer and the freezer section of the evaporator, for cooling the freezer compartment always is the greatest possible.
  • This in turn contributes to making it possible to, at all times, maintain the air in the freezer compartment at temperatures as low as -18 °C, which is often desired at modern absorption refrigerators.
  • the arrangement ensures that the humidity load generated by the ice-maker is taken care of by the defrosting means arranged for melting frost generated by humidity present in the air in the low temperature compartment.
  • the invention further accomplishes that heat added from the ice-maker, during cooling of the water and during heating of the ice for facilitating harvesting, does not significantly affect the evaporation temperature of the refrigeration medium in the freezer section of the evaporator.
  • the operation of the ice-maker thereby, does not force the refrigeration apparatus to compensate for heat added from the manufacturing or harvesting of ice.
  • the invention thus provides an absorption refrigerator, at which the temperature of the freezer compartment may be maintained at the desired level regardless of the operation of the ice-maker.
  • the third section of the evaporator may be arranged in the higher temperature refrigerator compartment.
  • the third section is arranged downstream of the passive evaporator section and upstream of the second evaporator section, whereby the third section of the evaporator or its heat transferring means is provided with means for melting frost formed on said evaporator section or said heat transferring means.
  • the third section of the evaporator may also be arranged in a separate ice-maker compartment which communicates with the low temperature compartment or the higher temperature compartment, depending of which of these compartments communicates with defrosting means.
  • the first, second and third evaporator sections may have other tube configurations than the ones described above.
  • The may for instance be formed by fewer or more interconnected straight tube portions or they may be formed by tube sections which are curved along their whole lengths.
  • the partition wall hermetically seals the freezer and the higher temperature compartments from each other. Small deviations from this principle may be allowed, as long as no significant heat transfer is effected between the two compartments

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)
  • Sorption Type Refrigeration Machines (AREA)

Claims (8)

  1. Absorptionskühlapparat (1), aufweisend
    ein Gehäuse mit äußeren Wänden (2, 3, 4, 5, 6) und mindestens einer Tür (7, 8), welche ein Speicherfach (9) mit niedriger Temperatur und ein Speicherfach (10) mit höherer Temperatur umgeben, wobei die Fächer durch eine Trennwand (11) getrennt sind,
    eine Vorrichtung zur Eisherstellung und
    ein Absorptionskühlsystem, aufweisend ein Verdampfungsrohr (20), in welchem ein Kühlmedium von einem stromaufwärtigen Ende zu einem stromabwärtigen Ende des Verdampfungsrohres strömt, und welches einen ersten Rohrabschnitt (21), welcher derart angeordnet ist, um Wärme von dem Fach mit niedriger Temperatur zu absorbieren, einen zweiten Rohrabschnitt (22), welcher derart angeordnet ist, um Wärme von dem Fach mit höherer Temperatur zu absorbieren, und einen dritten Rohrabschnitt (23) aufweist, welcher derart angeordnet ist, um Wärme von der Eisherstellungsvorrichtung zu absorbieren,
    wobei der erste, zweite und dritte Rohrabschnitt in Reihe verbunden sind und der erste Rohrabschnitt stromaufwärts vom zweiten Rohrabschnitt angeordnet ist, wobei der dritte Rohrabschnitt (23) derart angeordnet ist, um überwiegend Wärme von der Eisherstellungsvorrichtung für Eisherstellung durch Wärmeleitung zu absorbieren,
    dadurch gekennzeichnet, dass
    der dritte Rohrabschnitt (23) stromabwärts vom ersten Rohrabschnitt (21) und stromaufwärts vom zweiten Rohrabschnitt (22) angeordnet ist, und die Eisherstellungsvorrichtung Luft ausgesetzt ist, welche in dem Fach mit niedriger Temperatur oder in dem Fach (10) mit höherer Temperatur zirkuliert, wobei Einrichtungen vorgesehen sind zum Schmelzen von Eis, welches durch Feuchtigkeit in dem Fach (9) mit niedriger Temperatur oder im Fach (10) mit höherer Temperatur jeweils erzeugt wird.
  2. Absorptionskühlapparat nach Anspruch 1, bei welchem der erste (21) und dritte (23) Rohrabschnitt in dem Fach (9) mit niedriger Temperatur und der zweite Rohrabschnitt (22) in dem Fach (10) mit höherer Temperatur angeordnet sind.
  3. Absorptionskühlapparat nach Anspruch 1, bei welchem der dritte Rohrabschnitt in einem gesonderten Eisherstellungsfach angeordnet ist, welches mit dem Fach mit niedriger Temperatur oder mit dem Fach mit höherer Temperatur kommuniziert.
  4. Absorptionskühlapparat nach einem der Ansprüche 1 bis 3, bei welchem das stromaufwärtige Ende des dritten Rohrabschnittes (23) direkt mit dem stromabwärtigen Ende des ersten Rohrabschnitts (21) verbunden ist.
  5. Absorptionskühlapparat nach einem der Ansprüche 1 bis 4, bei welchem das stromaufwärtige Ende des zweiten Rohrabschnittes (22) mit dem stromabwärtigen Ende des dritten Rohrabschnittes (23) über einen passiven Gaswärmeaustausch-Rohrabschnitt (28) verbunden ist, welcher innerhalb einer der Wände (2) des Gehäuses angeordnet ist.
  6. Absorptionskühlapparat nach einem der Ansprüche 1 bis 5, bei welchem der erste Rohrabschnitt (21) zwei nicht-koaxiale Rohrabschnitte (21a) aufweist, deren Achsen gemeinsam eine allgemeine Erstreckungsebene des ersten Rohrabschnitts definieren, und wobei der dritte Rohrabschnitt (23) zwei nicht-koaxiale Rohrabschnitte (23a) aufweist, deren Achse gemeinsam eine allgemeine Erstreckungsebene des dritten Rohrabschnittes definieren, wobei die allgemeine Erstreckungsebene des ersten Rohrabschnittes im Wesentlichen senkrecht zu der allgemeinen Erstreckungsebene des dritten Rohrabschnittes ist.
  7. Absorptionskühlapparat nach Anspruch 6, bei welchem die allgemeine Erstreckungsebene des ersten Rohrabschnittes (21) im Wesentlichen senkrecht und im Allgemeinen parallel zu der allgemeinen Erstreckungsebene der Trennwand (11) ist.
  8. Absorptionskühlapparat nach einem der Ansprüche 1 bis 7, bei welchem die Eisherstellungsvorrichtung Heizeinrichtungen aufweist zum teilweisen Schmelzen des Eises zum Erleichtern des Entnehmens des Eises.
EP04749097A 2003-07-01 2004-06-30 Absorptionskühlvorrichtung mit eiserzeuger Expired - Lifetime EP1644677B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0301938A SE0301938D0 (sv) 2003-07-01 2003-07-01 Absorption refrigerator with ice-maker
PCT/SE2004/001059 WO2005003653A1 (en) 2003-07-01 2004-06-30 Absorption refrigerator with ice-maker

Publications (2)

Publication Number Publication Date
EP1644677A1 EP1644677A1 (de) 2006-04-12
EP1644677B1 true EP1644677B1 (de) 2010-11-03

Family

ID=27731068

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04749097A Expired - Lifetime EP1644677B1 (de) 2003-07-01 2004-06-30 Absorptionskühlvorrichtung mit eiserzeuger

Country Status (6)

Country Link
US (1) US20060225457A1 (de)
EP (1) EP1644677B1 (de)
AT (1) ATE487101T1 (de)
DE (1) DE602004029889D1 (de)
SE (1) SE0301938D0 (de)
WO (1) WO2005003653A1 (de)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1801523A3 (de) * 2005-12-21 2009-04-01 Thetford Corporation Gasabsorptionskältegerät
US7412837B2 (en) 2006-02-23 2008-08-19 Dometic Sweden Ab Method for use in controlling an absorption refrigerating system, and an absorption refrigerator
US8359874B2 (en) * 2008-04-18 2013-01-29 Whirlpool Corporation Secondary cooling path in refrigerator
US8794026B2 (en) 2008-04-18 2014-08-05 Whirlpool Corporation Secondary cooling apparatus and method for a refrigerator
US9513045B2 (en) 2012-05-03 2016-12-06 Whirlpool Corporation Heater-less ice maker assembly with a twistable tray
US8925335B2 (en) 2012-11-16 2015-01-06 Whirlpool Corporation Ice cube release and rapid freeze using fluid exchange apparatus and methods
US9518773B2 (en) 2012-12-13 2016-12-13 Whirlpool Corporation Clear ice maker
US9410723B2 (en) 2012-12-13 2016-08-09 Whirlpool Corporation Ice maker with rocking cold plate
US9759472B2 (en) 2012-12-13 2017-09-12 Whirlpool Corporation Clear ice maker with warm air flow
US9518770B2 (en) 2012-12-13 2016-12-13 Whirlpool Corporation Multi-sheet spherical ice making
US9470448B2 (en) 2012-12-13 2016-10-18 Whirlpool Corporation Apparatus to warm plastic side of mold
US9500398B2 (en) 2012-12-13 2016-11-22 Whirlpool Corporation Twist harvest ice geometry
US9915458B2 (en) 2014-10-23 2018-03-13 Whirlpool Corporation Method and apparatus for increasing rate of ice production in an automatic ice maker
DE102016003547A1 (de) * 2016-03-22 2017-09-28 Liebherr-Hausgeräte Ochsenhausen GmbH Kühl- und/oder Gefriergerät
US10739053B2 (en) 2017-11-13 2020-08-11 Whirlpool Corporation Ice-making appliance
US10907874B2 (en) 2018-10-22 2021-02-02 Whirlpool Corporation Ice maker downspout
USD1002676S1 (en) 2019-08-30 2023-10-24 Dometic Sweden Ab Appliance
USD1026969S1 (en) 2020-08-31 2024-05-14 Dometic Sweden Ab Refrigerator

Family Cites Families (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2371214A (en) * 1945-03-13 Refrigeration
US1910853A (en) * 1928-04-04 1933-05-23 Electrolux Servel Corp Absorption refrigerating apparatus
US2026838A (en) * 1931-06-10 1936-01-07 Bishop & Babcock Sales Company Refrigerating means and method
US2269701A (en) * 1938-04-07 1942-01-13 Servel Inc Refrigeration
US2262635A (en) * 1938-11-25 1941-11-11 Hoover Co Refrigeration
US2310875A (en) * 1938-12-31 1943-02-09 Hoover Co Refrigeration
US2363385A (en) * 1939-06-17 1944-11-21 Hoover Co Refrigeration
US2345505A (en) * 1940-04-06 1944-03-28 Hoover Co Refrigeration
US2520530A (en) * 1946-08-31 1950-08-29 Hoover Co Absorption refrigeration
GB646083A (en) * 1947-02-28 1950-11-15 Electrolux Ltd Improvements in or relating to refrigerator cabinets
US2560790A (en) * 1947-04-05 1951-07-17 Hoover Co Multitemperature absorption refrigerating system using multiple stages of generation
GB665683A (en) * 1948-03-02 1952-01-30 Electrolux Ltd Improvements in or relating to cooling members of absorption refrigerating apparatus
US2631443A (en) * 1948-03-02 1953-03-17 Electrolux Ab Absorption refrigeration
US2597813A (en) * 1948-12-24 1952-05-20 Hoover Co Absorption refrigerating apparatus
US2773359A (en) * 1951-07-03 1956-12-11 Electrolux Ab Absorption refrigeration apparatus
US2728198A (en) * 1952-12-12 1955-12-27 Gen Electric Plural temperature refrigerating system
US2743588A (en) * 1953-03-05 1956-05-01 Servel Inc Ice maker
DE1008328B (de) * 1954-09-06 1957-05-16 Siemens Ag Verdampfer fuer eine kontinuierliche, mit einem indifferenten Gas arbeitende Absorptions-Kaeltemaschine
US3277665A (en) * 1964-12-03 1966-10-11 Borg Warner Defrost system for gas absorption type refrigerators
US3803862A (en) * 1972-12-13 1974-04-16 Gen Electric Refrigerator including automatic ice maker
DE2507706C2 (de) * 1975-02-22 1982-04-01 Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart Kühlmöbel, insbesondere Zweitemperaturen-Kühlschrank
SE412112B (sv) * 1976-08-27 1980-02-18 Electrolux Ab Anordning vid en med vermedriven absorptionskylapparat driven, automatisk ismaskin
US4307578A (en) * 1980-04-16 1981-12-29 Atlantic Richfield Company Heat exchanger efficiently operable alternatively as evaporator or condenser
US4741175A (en) * 1987-03-17 1988-05-03 General Electric Company Auto defrost refrigerator
US5406805A (en) * 1993-11-12 1995-04-18 University Of Maryland Tandem refrigeration system
US20050011222A1 (en) * 2003-07-15 2005-01-20 Dometic Appliances Ab Absorption refrigerator with ice-maker
US6845631B1 (en) * 2003-07-15 2005-01-25 Dometic Sweden Ab Absorption refrigerator

Also Published As

Publication number Publication date
WO2005003653A1 (en) 2005-01-13
EP1644677A1 (de) 2006-04-12
US20060225457A1 (en) 2006-10-12
ATE487101T1 (de) 2010-11-15
DE602004029889D1 (de) 2010-12-16
SE0301938D0 (sv) 2003-07-01

Similar Documents

Publication Publication Date Title
EP1644677B1 (de) Absorptionskühlvorrichtung mit eiserzeuger
US6845631B1 (en) Absorption refrigerator
US10612857B2 (en) Evaporator fins in contact with end bracket
US9328951B2 (en) Refrigerator
US8099975B2 (en) Icemaker for a refrigerator
KR101705641B1 (ko) 냉장고 및 냉장고의 제빙 장치의 조립 방법
EP2787309A2 (de) Kühlschrank
CN102317716B (zh) 冰箱
JP6678542B2 (ja) 冷蔵庫
JP6405526B2 (ja) 冷蔵庫
US20050011222A1 (en) Absorption refrigerator with ice-maker
KR200320682Y1 (ko) 축냉식 냉장고 선반 및 이를 이용한 휴대용 아이스박스
JP6426350B2 (ja) 冷蔵庫
JP6492291B2 (ja) 冷蔵庫
EP3757484B1 (de) Kühlgerät
CN102317713B (zh) 冰箱
CN102954652A (zh) 制冷器具
EP4151933A1 (de) Kühlschrank
JP6697040B2 (ja) 冷蔵庫
EP1644675A1 (de) Absorptionskühlvorrichtung
CN219037261U (zh) 冷藏冷冻装置
JP2017172849A (ja) 冷蔵庫
JP2017172850A (ja) 冷蔵庫
JP6811371B2 (ja) 冷蔵庫
KR200217544Y1 (ko) 냉장고

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20060126

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

DAX Request for extension of the european patent (deleted)
RIN1 Information on inventor provided before grant (corrected)

Inventor name: HALLIN, ANDERS, BENGT, INGEMAR

17Q First examination report despatched

Effective date: 20090713

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 602004029889

Country of ref document: DE

Date of ref document: 20101216

Kind code of ref document: P

REG Reference to a national code

Ref country code: NL

Ref legal event code: T3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101103

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101103

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101103

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101103

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110203

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110303

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110204

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101103

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20110214

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101103

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101103

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101103

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101103

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101103

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101103

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20110622

Year of fee payment: 8

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20110804

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20110621

Year of fee payment: 8

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602004029889

Country of ref document: DE

Effective date: 20110804

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101103

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20110630

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20120229

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110630

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110630

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110630

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110630

REG Reference to a national code

Ref country code: NL

Ref legal event code: V1

Effective date: 20130101

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602004029889

Country of ref document: DE

Effective date: 20130101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110630

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130101

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101103

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101103

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20101103