EP0732554A2 - Evaporateur, particulièrement pour des réfrigérateurs ménagers à compresseur - Google Patents

Evaporateur, particulièrement pour des réfrigérateurs ménagers à compresseur Download PDF

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Publication number
EP0732554A2
EP0732554A2 EP96101434A EP96101434A EP0732554A2 EP 0732554 A2 EP0732554 A2 EP 0732554A2 EP 96101434 A EP96101434 A EP 96101434A EP 96101434 A EP96101434 A EP 96101434A EP 0732554 A2 EP0732554 A2 EP 0732554A2
Authority
EP
European Patent Office
Prior art keywords
evaporator
sections
section
refrigerant
cooling capacity
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
EP96101434A
Other languages
German (de)
English (en)
Other versions
EP0732554B1 (fr
EP0732554A3 (fr
Inventor
Detlef Cieslik
Alexander Dipl.-Ing. Rupp (Fh)
Friedrich Dipl.-Ing. Arnold
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
Application filed by Individual filed Critical Individual
Publication of EP0732554A2 publication Critical patent/EP0732554A2/fr
Publication of EP0732554A3 publication Critical patent/EP0732554A3/fr
Application granted granted Critical
Publication of EP0732554B1 publication Critical patent/EP0732554B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • the invention relates to an evaporator, in particular for compressor-operated household refrigeration appliances, with at least two evaporator sections serving as heat exchange surfaces, to which the refrigerant conveyed by the compressor is fed via injection points, and which are connected to form a coherent sheet metal plate.
  • DE-OS 38 04 863 shows and describes an evaporator board which is suitable for use in a cooling device with three thermally separated cooling compartments, each of which is cooled by an evaporator section of the board-like evaporator.
  • Each of the evaporator sections is assigned an injection pipe which serves to reduce the pressure of the refrigerant conveyed by a compressor and which is arranged in a tongue of the evaporator board.
  • the supply channels for the refrigerant adjoining the injection pipes to the refrigerant channel arrangements of the individual evaporator sections are along a circuit board area common to all three evaporator sections brought up to the respective channel arrangement of the evaporator section, as a result of which the refrigerant supply channel sections overlap.
  • each of the evaporator sections is equipped on its heat exchange surface with an injection point for the refrigerant, and in that the evaporator sections within the sheet metal plate are largely thermally decoupled from one another.
  • the decentralized injection point which is assigned to each evaporator section, ensures that the evaporator section to be supplied with refrigerant is acted upon in a targeted manner, without the refrigerant supply channels leading through one of the evaporator sections leading to the other evaporator section inadvertently influencing the temperature of this evaporator section.
  • evaporator sections are provided, one of which has a higher cooling capacity than the other two and each of the other evaporator sections is connected in series.
  • the evaporator section of higher cooling capacity is always additionally charged with liquid refrigerant when the evaporator section of lower cooling capacity is applied, and thus also cooled, so that the cooling demand cycles for the evaporator of higher cooling capacity can be increased accordingly.
  • Thermal decoupling is particularly easy to manufacture, but has a high degree of efficiency, if, according to a next preferred embodiment of the subject of the invention, it is provided that the evaporator sections are thermally decoupled by cutouts in the sheet metal plate between the individual evaporator sections.
  • each of the evaporator sections of lower cooling capacity has its injection point on the heat exchange surface in the vicinity of its evaporator section side facing away from the evaporator section of higher cooling capacity.
  • a particularly favorable and expedient refrigeration coupling of the two evaporator sections results if, according to a further advantageous embodiment of the subject of the invention, it is provided that the evaporator section with higher refrigeration capacity is connected to the other evaporator sections via a connecting web provided with refrigerant channels.
  • a refrigerant supply can be connected in a particularly simple manner if, according to a further preferred embodiment of the object of the invention, it is provided that the evaporator sections of lower cooling capacity have their injection point essentially in the middle on the evaporator section side facing away from the evaporator section of higher cooling capacity.
  • an evaporator board suitable for three different temperature ranges is produced by such a solution, which is inexpensive to produce due to the location for the injection points and at the same time is easy to handle.
  • the two evaporator sections of lower cooling capacity are fixed to one another by a retaining web provided between their adjacent section sides.
  • the retaining web between the two evaporator sections fixes and stabilizes the two evaporator sections with respect to one another, so that the handling of the evaporator board in the individual production sections is significantly improved.
  • the single figure shows a printed circuit board-like evaporator with three evaporator sections arranged within the surface of the printed circuit board.
  • a plate-like evaporator 10 for use in a multi-temperature household refrigeration device, not shown, is formed from two aluminum sheet metal plates joined together by pressure welding, between which the refrigerant channel arrangement of the evaporator 10 is introduced.
  • the evaporator 10 has three evaporator sections of different sizes in terms of their area fraction, of which the evaporator section 11 equipped with the largest area fraction is designed as a freezer compartment evaporator. This has a bottom area 12, a rear wall area 13 and a ceiling area 14, which serve as heat exchange surfaces and which are provided for this purpose with a refrigerant channel 15 through which refrigerant flows.
  • the refrigerant used to flow through the refrigerant channel 15 is supplied to the refrigerant channel 15 of the evaporator section 11 in the ceiling area 14 using an injection point 16 formed by stamping a throttle tube.
  • an evaporator section 17 is connected upstream of the evaporator section 11, which serves to cool a zero-degree compartment and which is mechanically connected to the former via a connecting web 18. Only a third of the length of the connecting web 18 is used for the mechanical connection, while the remaining length section is free from the evaporator section 11, so that the evaporator section 11, which is arranged due to its [-shaped installation shape with its at the bottom region 12 perpendicular to the plane of the evaporator section 17, is largely thermally decoupled from it.
  • a recess 19 is used for thermal decoupling between the adjacent side edges of the evaporator sections 11 and 17, which recess essentially extends over the entire width of the mutually adjacent evaporator section sides of the evaporator sections 11 u. 17 extends.
  • the evaporator section 17 is provided with a connection point on its transverse side located at the bottom in the installed position, approximately in the middle of its width.
  • a throttle tube (not shown), which serves as an injection tube and can be introduced into this for insertion, which is fixed in the connection point by means of a soldered connection and in a pressure-tight manner and which generates an injection point 20.
  • a refrigerant channel 21 which runs in turns, which extends with its turns into the vicinity of the lateral edges of the evaporator section 17 and which is designed as a double channel along the connecting web 18 up to its mechanical connection point on the evaporator section 11. From there, it is led through the rear wall area 13 into the ceiling area 14, where it is connected to the refrigerant channel arrangement of the evaporator section 11 at an integration point in the rear wall area 13 in the flow direction of the refrigerant after the injection point 16.
  • the evaporator section 11 is preceded by a further evaporator section 22, which serves to generate cold in a cooling compartment and is mechanically connected to the evaporator section 11 via a connecting web 23.
  • the connecting web 23 is provided on the longitudinal side of the evaporator board 10 opposite the connecting web 18 and runs along the bottom region 12 and the evaporator section 17, the connecting web 23 being fixed to both by narrow spacing tongues arranged at a distance from one another to avoid thermal bridges.
  • the connecting web 23 is provided with a refrigerant channel 25 designed as a double channel, which in the connection area of the connecting web 23 to the evaporator section 11 is brought together again to form a single-pass refrigerant channel and via the bottom area 12, the rear wall area 13 and the ceiling area 14, which lie after the injection point 16 Integration point in the rear wall area 13 is supplied.
  • the refrigerant channel 25 designed as a double channel is brought together again in the area of its transition to the evaporator section 22 to form a single channel.
  • This is arranged in turns, is arranged over the height of the evaporator section 22 and is connected to a connection point on its transverse side facing away from the evaporator section 17 and in the installed position of the evaporator 10.
  • This serves to receive an injection pipe, not shown, which is fixed in the connection point in a pressure-tight manner by a soldered connection on the evaporator section 22 to form an injection point 26.
  • a recess 27 is provided for their thermal decoupling, which is located between the connecting web 23 and a holding web 28 extends.
  • This is connected to both the evaporator section 17 and to the evaporator section 22 and serves to fix and stabilize the evaporator section 22 during the manufacturing process of the evaporator 10, being severed after the evaporator 10 has been fixed to a refrigeration device in order to conduct heat between the evaporator sections 17 and 22 as far as possible and thus to improve the thermal decoupling between these two evaporator sections 17 and 22.
  • Each of the evaporator sections 11, 17 and 22 can be acted upon with liquid refrigerant in a targeted manner via electrically controllable solenoid valves (not shown), the maganet valves being controlled as a function of a refrigeration request from the refrigeration compartments of the refrigeration device.
  • the liquid refrigerant supplied to the evaporator sections 11, 17 and 22 via the injection points 16, 20 and 26 assigned to them is sucked off by a refrigerant compressor after its evaporation in the gaseous state via a single suction point 29 arranged in the ceiling area 14 of the freezer compartment evaporator 11.

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)
EP96101434A 1995-03-16 1996-02-01 Evaporateur, particulièrement pour des réfrigérateurs ménagers à compresseur Expired - Lifetime EP0732554B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19509571 1995-03-16
DE19509571A DE19509571A1 (de) 1995-03-16 1995-03-16 Verdampfer, insbesondere für kompressorbetriebene Haushalt-Kältegeräte

Publications (3)

Publication Number Publication Date
EP0732554A2 true EP0732554A2 (fr) 1996-09-18
EP0732554A3 EP0732554A3 (fr) 1997-03-12
EP0732554B1 EP0732554B1 (fr) 2000-11-22

Family

ID=7756863

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96101434A Expired - Lifetime EP0732554B1 (fr) 1995-03-16 1996-02-01 Evaporateur, particulièrement pour des réfrigérateurs ménagers à compresseur

Country Status (4)

Country Link
EP (1) EP0732554B1 (fr)
DE (2) DE19509571A1 (fr)
ES (1) ES2153506T3 (fr)
TR (1) TR199600151A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0917919A3 (fr) * 1997-11-06 2001-04-11 Whirlpool Corporation Procédé de fabrication d'un évaporateur monobloc, et évaporateur obtenu

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB856477A (en) * 1958-06-30 1960-12-14 Gen Motors Corp Improvements in or relating to refrigerators, and to methods of making evaporators therefor
DE1809673A1 (de) * 1968-11-19 1970-06-04 Ver Deutsche Metallwerke Ag Plattenverdampfer mit mehreren Waermeaustauschern
DE3741140C1 (en) * 1987-12-04 1989-06-08 Schmoele Metall R & G Cooling plate
DE3804863A1 (de) * 1988-02-17 1989-08-31 Schmoele Metall R & G Kuehlplatine fuer einen kuehlschrank
DE4141641A1 (de) * 1991-12-17 1993-06-24 Bosch Siemens Hausgeraete Zweitemperaturen-einkreiskuehlgeraet
EP0602379A2 (fr) * 1992-12-17 1994-06-22 Bosch-Siemens HausgerÀ¤te GmbH Réfrigérateur, en particulier réfrigérateur à plusieurs températures
EP0732553A2 (fr) * 1995-03-16 1996-09-18 Bosch-Siemens HausgerÀ¤te GmbH Arrangement d'évaporateurs, notamment pour réfrigérateurs domestiques commandés par compresseurs

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB856477A (en) * 1958-06-30 1960-12-14 Gen Motors Corp Improvements in or relating to refrigerators, and to methods of making evaporators therefor
DE1809673A1 (de) * 1968-11-19 1970-06-04 Ver Deutsche Metallwerke Ag Plattenverdampfer mit mehreren Waermeaustauschern
DE3741140C1 (en) * 1987-12-04 1989-06-08 Schmoele Metall R & G Cooling plate
DE3804863A1 (de) * 1988-02-17 1989-08-31 Schmoele Metall R & G Kuehlplatine fuer einen kuehlschrank
DE4141641A1 (de) * 1991-12-17 1993-06-24 Bosch Siemens Hausgeraete Zweitemperaturen-einkreiskuehlgeraet
EP0602379A2 (fr) * 1992-12-17 1994-06-22 Bosch-Siemens HausgerÀ¤te GmbH Réfrigérateur, en particulier réfrigérateur à plusieurs températures
EP0732553A2 (fr) * 1995-03-16 1996-09-18 Bosch-Siemens HausgerÀ¤te GmbH Arrangement d'évaporateurs, notamment pour réfrigérateurs domestiques commandés par compresseurs

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0917919A3 (fr) * 1997-11-06 2001-04-11 Whirlpool Corporation Procédé de fabrication d'un évaporateur monobloc, et évaporateur obtenu

Also Published As

Publication number Publication date
DE19509571A1 (de) 1996-09-19
EP0732554B1 (fr) 2000-11-22
DE59606153D1 (de) 2000-12-28
EP0732554A3 (fr) 1997-03-12
ES2153506T3 (es) 2001-03-01
TR199600151A2 (tr) 1996-11-21

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