EP1591735B1 - Steuerverfahren zum Herabsetzen des Drucks eines evakuierbaren Lagerfaches - Google Patents

Steuerverfahren zum Herabsetzen des Drucks eines evakuierbaren Lagerfaches Download PDF

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Publication number
EP1591735B1
EP1591735B1 EP05290740A EP05290740A EP1591735B1 EP 1591735 B1 EP1591735 B1 EP 1591735B1 EP 05290740 A EP05290740 A EP 05290740A EP 05290740 A EP05290740 A EP 05290740A EP 1591735 B1 EP1591735 B1 EP 1591735B1
Authority
EP
European Patent Office
Prior art keywords
pressure
storage compartment
vacuum storage
compartment
vacuum
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
EP05290740A
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English (en)
French (fr)
Other versions
EP1591735A1 (de
Inventor
Stefano Dematte
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.)
FagorBrandt SAS
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FagorBrandt SAS
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Filing date
Publication date
Application filed by FagorBrandt SAS filed Critical FagorBrandt SAS
Priority to PL05290740T priority Critical patent/PL1591735T3/pl
Publication of EP1591735A1 publication Critical patent/EP1591735A1/de
Application granted granted Critical
Publication of EP1591735B1 publication Critical patent/EP1591735B1/de
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
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/042—Air treating means within refrigerated spaces
    • 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
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/04—Treating air flowing to refrigeration compartments
    • F25D2317/043—Treating air flowing to refrigeration compartments by creating a vacuum in a storage compartment

Definitions

  • the present invention relates to a vacuum storage compartment of a domestic refrigerator. More specifically, it relates to a method of automatically controlling the depression of such a vacuum storage compartment.
  • a vacuum storage drawer device of a domestic refrigerator is described for example in the patent FR1377844 .
  • the device described proposes to provide "at least one isolated cell, airtight, taken from the usable space of the refrigerator assembly, cell in which is produced a certain degree of vacuum, by means of suction devices combined in the refrigerator or associated with it ". This type of device can extend the shelf life of certain fragile foods.
  • Such a system has the following constraints.
  • the system operates in open loop, the user inserts the compartment in its slot and triggers the creation of vacuum. It has no information on the proper positioning of the compartment, nor on the actual realization of depression.
  • An additional constraint is that the user must perform several successive and constraining steps to obtain the vacuum without knowing if the result obtained is correct. He does not know if the depression obtained is sufficient. Moreover, it has no means of checking the time of maintaining an adequate depression.
  • the document JP 2001 012837 A discloses a refrigerator having a vacuum pump which discharges gas from a storage chamber containing food to the outside.
  • the object of the invention is to provide a method of automatically controlling the depression of such a vacuum storage compartment.
  • the invention facilitates the use of a refrigerator provided with such a compartment. Indeed, the method makes it possible to give a return of permanent information to the user on the establishment of the compartment and the efficiency of the vacuum.
  • the automatic control method of the depression of such a vacuum storage compartment must be able to detect the presence of the compartment. Indeed, its non-presence can be synonymous with either real absence or poor implementation. Then the control process must be able to quickly warn the user in the event that the compartment is not sealed for any reason. Finally, it must be able to maintain a proper depression inside the vacuum storage compartment and warn the user if it is impossible to do so.
  • the fourth step refers to the fifth test allows, in addition, to verify the maintenance of the depression in time. But this verification could be done more appropriately by replacing this fourth step with another step and an additional test.
  • a rise in pressure, natural after a certain time, in the vacuum storage compartment causes the error signal to be displayed before the vacuum is reduced compartment. This may or may not be acceptable at the user level.
  • FIG. 1 To the figure 1 there is shown a perspective view a domestic refrigerator 1 comprising vacuum storage compartment 2.
  • the refrigerator 1 further comprises a door 3, an inner chamber 4 and a display 5.
  • the other constituent elements have not been shown. of a refrigerator well known to those skilled in the art such as the cold production system because they are not modified by the invention.
  • Vacuum storage compartment 2 has been shown. Here it has given it a shape such that its upper edge lies in an inclined plane, relative to the horizontal towards the rear of the apparatus. This upper edge comes, when closing the compartment in contact with a complementary shape inside the enclosure.
  • the interest of this form is twofold, to allow a good sealing and to pass freely the elements which will be described in the figure 3 . But the invention is applicable to a compartment of any other form having a satisfactory seal and allowing the installation of the elements described below.
  • FIG. 3 there is shown a partial sectional view of a domestic refrigerator comprising a vacuum storage compartment 2.
  • the compartment 2 is shown partially out of its housing 6.
  • Said housing 6 is positioned inside the chamber 4 of the refrigerator 1.
  • the housing 6 is provided with a means 9 for detecting the presence of the compartment 2 (sensor operating by Hall effect for example). It is also provided with two pressure measuring means 7 and 8, for example pressure switches, the means 7 for detecting a first pressure level and the means 8 for detecting a second pressure level.
  • a device 10 enables the compartment 2 to be depressurized. This device will, in general, be a vacuum pump.
  • values of interest may be, for example, for the first predetermined pressure level P 1 , of the order of 150 mbar below atmospheric pressure and, for the second predetermined pressure level P 2 , 600 mBar below atmospheric pressure.
  • FIG 4 there is shown a flow chart showing a method of automatically controlling the depression of such a vacuum storage compartment.
  • the pressure P 1, and P 2 have been defined above.
  • the times, t 1 and t 2 can be, for example, of the order of 30 seconds for t 1 and of the order of 180 seconds for t 2 . These values are given for a compartment volume of the order of 6 liters, but of course depend on several parameters.
  • the Figures 5a to 5e represent the different possible states of the display corresponding to the steps described in the flowchart of the figure 4 .
  • the display is, in the representation example chosen, composed of five symbols, a rectangular parallelepiped symbolizing the vacuum storage compartment 2 and four vertical bars. These symbols may have three states: off, on steady, or on blinking.
  • the representation of these states selected for the figures 5 is: dashed lines for an off symbol, a bold line and a gray fill for a steady on symbol, and a bold line with no fill for a blinking lit symbol.
  • Witness A represented at figure 5a
  • Witness B represented at figure 5b , shows the symbol of the compartment lit steady and all the bars off and means the presence of compartment.
  • witness C represented at figure 5c , shows the symbol of the vacuum storage compartment 2 lit steady, as well as the first bar from the left. The other bars are flashing, for example, lit in turn to symbolize a progression. This configuration means that the first pressure level P 1 has been reached in vacuum storage 2 and that the evacuation continues to the second pressure level P 2 .
  • witness D represented at figure 5d , shows all the symbols lit fixed and means that the second pressure level P 2 has been reached and that the depression in the vacuum storage compartment 2 is in accordance with the desired level.
  • witness E represented at figure 5e , shows all flashing symbols and is part of the error signal if it has a visual component.
  • the error signal E can, indeed, be visual and / or sound.
  • An advantageous embodiment of the invention consists in coupling the tests comparing, one, the elapsed time t to the predetermined duration t 2 , and the other, the pressure P to the pressure predetermined P 2 .
  • the vacuum storage compartment 2 is not in the form of a drawer, as illustrated here, but in the form of a fixed compartment provided with 'a door.
  • the invention is then adapted by replacing the means 9 for detecting the presence of the compartment 2 by a means for detecting the closing of the door.
  • the vacuum storage compartment 2 is not in the form of a drawer, but in the form of a sealed box.
  • the means for measuring the pressure 7 and 8 and the device 10 for depression of the compartment 2 then enter through openings provided with valves in said vacuum storage compartment 2.
  • the advantage of such an embodiment is to move the vacuum storage compartment 2 inside the refrigerator 1, or to store it outside thereof.
  • automatic monitoring of the vacuum holding of the vacuum storage compartment 2 is not carried out.
  • a further advantage of this embodiment is to have several interchangeable boxes.
  • the invention responds to the desire to achieve a method of automatically controlling the depression of a vacuum storage compartment. It ensures the user a follow-up of the depression and the maintenance of a low pressure and the alert in case of malfunction.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
  • Control Of Fluid Pressure (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Physical Deposition Of Substances That Are Components Of Semiconductor Devices (AREA)
  • Electron Tubes For Measurement (AREA)
  • Storage Of Fruits Or Vegetables (AREA)

Claims (2)

  1. Verfahren zur Steuerung des unter Unterdrucksetzens eines Vakuumkonservierungsfachs eines Haushaltskühlschranks
    dadurch gekennzeichnet, dass es die folgenden Schritte umfasst:
    a - Nullstellen und Einschalten des Zeitzählers t;
    b - Test des Vorhandenseins des Vakuumkonservierungsfachs;
    bei nicht Vorhandensein, Aufleuchten einer Anzeige (A), welche dem Nichtvorhandensein des Vakuumkonservierungsfachs entspricht, und zurück zu Schritt a;
    bei Vorhandensein, Einschalten des Systems zum unter Unterdrucksetzen und Übergang zu Schritt c;
    c - Aufleuchten einer Anzeige (B), welche dem Vorhandensein des Vakuumkonservierungsfachs entspricht, und Übergang zu Schritt d;
    d - Test der verstrichenen Zeit t;
    wenn die verstrichene Zeit t kürzer als eine vorgegebene Zeit t1 ist, zurück zu Schritt c;
    wenn die verstrichene Zeit t eine vorgegebene Zeit t1 überschreitet oder dieser entspricht, Übergang zu Schritt e;
    e - Test des Drucks P im Inneren des Vakuumkonservierungsfachs;
    wenn der Druck P einen vorgegebenen Druck P1 überschreitet, Beenden des Pumpvorgangs, Anzeigen eines Fehlersignals (E) und zurück zu Schritt a;
    wenn der Druck P niedriger als ein vorgegebener Druck P1 ist oder diesem entspricht, Übergang zu Schritt f;
    f - Aufleuchten einer Anzeige (C), welche dem effektiven Beginn des unter Unterdrucksetzens des Vakuumkonservierungsfachs entspricht, und Übergang zu Schritt g;
    g - Test der Zeit t;
    wenn die verstrichene Zeit t kürzer als eine vorgegebene Zeit t2 ist, zurück zu Schritt f;
    wenn die verstrichene Zeit t eine vorgegebene Zeit t2 überschreitet oder dieser entspricht, Übergang zu Schritt h;
    h - Erneuter Test des Drucks P im Inneren des Vakuumkonservierungsfachs;
    wenn der Druck P einen vorgegebenen Druck P2 überschreitet, Beenden des Pumpvorgangs, Anzeigen eines Fehlersignals (E) und zurück zu Schritt a;
    wenn der Druck P niedriger als ein vorgegebener Druck P2 ist oder diesem entspricht, Übergang zu Schritt i;
    i - Beenden des Pumpvorgangs, Aufleuchten einer Anzeige (D), welche dem erfolgreichen unter Unterdrucksetzen des Vakuumkonservierungsfachs entspricht, und zurück zu Schritt h.
  2. Verfahren zur Steuerung des unter Unterdrucksetzens eines Vakuumkonservierungsfachs eines Haushaltskühlschranks nach Anspruch 1,
    dadurch gekennzeichnet, dass es anstelle des Schritts i die folgenden Schritte umfasst:
    i' - Beenden des Pumpvorgangs, Aufleuchten einer Anzeige (D), welche dem erfolgreichen unter Unterdrucksetzen des Vakuumkonservierungsfachs entspricht, und Übergang zu Schritt j';
    j' - Erneuter Test des Drucks P im Inneren des Vakuumkonservierungsfachs;
    wenn der Druck P den vorgegebenen Druck P2 überschreitet, zurück zu Schritt a;
    wenn der Druck P niedriger als der vorgegebene Druck P2 ist oder diesem entspricht, zurück zu Schritt i'.
EP05290740A 2004-04-30 2005-04-04 Steuerverfahren zum Herabsetzen des Drucks eines evakuierbaren Lagerfaches Expired - Lifetime EP1591735B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL05290740T PL1591735T3 (pl) 2004-04-30 2005-04-04 Proces kontroli wytwarzania podciśnienia w komorze konserwacji próżniowej

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0404661A FR2869675B1 (fr) 2004-04-30 2004-04-30 Procede de controle de la mise en depression d'un compartiment de conservation sous vide.
FR0404661 2004-04-30

Publications (2)

Publication Number Publication Date
EP1591735A1 EP1591735A1 (de) 2005-11-02
EP1591735B1 true EP1591735B1 (de) 2010-01-27

Family

ID=34942065

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05290740A Expired - Lifetime EP1591735B1 (de) 2004-04-30 2005-04-04 Steuerverfahren zum Herabsetzen des Drucks eines evakuierbaren Lagerfaches

Country Status (6)

Country Link
EP (1) EP1591735B1 (de)
AT (1) ATE456774T1 (de)
DE (1) DE602005019120D1 (de)
ES (1) ES2338127T3 (de)
FR (1) FR2869675B1 (de)
PL (1) PL1591735T3 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100582612C (zh) * 2006-08-18 2010-01-20 博西华电器（江苏）有限公司 具有真空保鲜系统的电冰箱及其控制方法
US8281606B2 (en) 2008-02-06 2012-10-09 Whirlpool Corporation Refrigerator vacuum storage system
US7669434B2 (en) 2008-02-06 2010-03-02 Whirlpool Corporation Refrigerator door vacuum preservation system
CN114370386B (zh) * 2020-10-15 2024-05-03 海信冰箱有限公司 冰箱抽真空控制方法及冰箱

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1377844A (fr) 1963-12-19 1964-11-06 Breconvuot Anstalt Perfectionnements apportés aux réfrigérateurs
JPH03175251A (ja) * 1989-12-01 1991-07-30 Makoto Watanabe 電気冷蔵庫
JP2001012837A (ja) * 1999-06-29 2001-01-19 Matsushita Refrig Co Ltd 真空冷却装置を備えた冷蔵庫
DE10248510A1 (de) * 2002-10-17 2004-04-29 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät mit einem evakuierbaren Lagerfach

Also Published As

Publication number Publication date
FR2869675B1 (fr) 2006-08-04
ATE456774T1 (de) 2010-02-15
ES2338127T3 (es) 2010-05-04
EP1591735A1 (de) 2005-11-02
DE602005019120D1 (de) 2010-03-18
PL1591735T3 (pl) 2010-07-30
FR2869675A1 (fr) 2005-11-04

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