EP1591735A1 - 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
EP1591735A1
EP1591735A1 EP05290740A EP05290740A EP1591735A1 EP 1591735 A1 EP1591735 A1 EP 1591735A1 EP 05290740 A EP05290740 A EP 05290740A EP 05290740 A EP05290740 A EP 05290740A EP 1591735 A1 EP1591735 A1 EP 1591735A1
Authority
EP
European Patent Office
Prior art keywords
pressure
storage compartment
vacuum storage
test
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.)
Granted
Application number
EP05290740A
Other languages
English (en)
French (fr)
Other versions
EP1591735B1 (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
Original Assignee
Brandt Industries SAS
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Filing date
Publication date
Application filed by Brandt Industries SAS filed Critical Brandt Industries 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 carry out "at least one insulated, airtight cell, taken from usable space of the refrigerator, a cell in which a refrigerator is produced certain degree of vacuum, by means of combined suction devices in the refrigerator or associated with it. "This type of device allows to extend the shelf life of certain foods fragile.
  • 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 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 provides a permanent feedback to the user on the establishment of the compartment and the effectiveness of the vacuum.
  • the method of automatically controlling the setting depression of such a vacuum storage compartment must be able to detect the presence of the compartment. Indeed, his presence may be synonymous with either real or bad set up. Then the control process must be able to to quickly warn the user in the event that the tightness of the compartment is not insured for any reason. Finally, he must be able to maintain a correct depression indoors of the vacuum storage compartment and to 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 in time of the depression. But this verification could be carried out more appropriately in replacing this fourth step with another step and a test additional.
  • a rise in pressure, natural after a while, in the vacuum storage compartment causes the display of the error signal before the depression of the compartment. it may or may not be acceptable at the user level.
  • the frequency with which this occurs and the nature of the error signal (which can be sound) it can be interesting not to treat a natural rise of pressure by use the fourth step as described above.
  • FIG. 1 there is shown a perspective view a domestic refrigerator 1 including storage compartment under vacuum 2.
  • the refrigerator 1 further comprises a door 3, a interior speaker 4 and a display.
  • other components of a refrigerator well known to man of art such as the cold production system as they are only not modified by the invention.
  • FIG 2 there is shown storage compartment under empty 2. He gave it here a form such that its upper edge is found in an inclined plane, relative to the horizontal towards the back of the device. This upper edge comes, when closing the compartment in contact with a complementary shape inside of the enclosure.
  • the interest of this form is twofold, to allow a good sealing and free passage of the elements that will be described in Figure 3. But the invention is applicable to a compartment of any other form having a seal satisfactory 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 housing. enclosure 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 pressures 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.
  • FIGS. 5a to 5e represent the various possible states of the display corresponding to the steps described in the flowchart of FIG. 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 chosen for FIGS. 5 is as follows: dashed lines for an off symbol, a bold line and a gray fill for a fixed lit symbol and a bold line without a fill for a flashing lit symbol.
  • the indicator A shown in FIG. 5a, shows all the symbols extinguished and signifies the absence of a compartment.
  • the B indicator shown in Figure 5b, shows the symbol of the compartment lit steady and all the bars off and means the presence of compartment.
  • the indicator C shown in FIG. 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 .
  • the witness D shown in FIG. 5d, shows all the symbols lit steady and signifies 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.
  • the indicator E shown in FIG. 5e, shows all the 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 predetermined pressure P 2 .
  • the vacuum storage compartment 2 does not in the form of a drawer, as shown here, but under the shape of a fixed compartment with a door.
  • the invention is then adapted by replacing the means 9 for detecting the presence of the compartment 2 by means of detecting the closure 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.
  • An additional advantage of this embodiment is to have several interchangeable boxes.
  • the invention responds to the need to carry out a control method automatic depressure of a storage compartment under vacuum. It ensures the user a follow-up of the implementation depression and maintaining a low pressure and alert in case of dysfunction.

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)
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 true EP1591735A1 (de) 2005-11-02
EP1591735B1 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)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7669434B2 (en) 2008-02-06 2010-03-02 Whirlpool Corporation Refrigerator door vacuum preservation system
US8281606B2 (en) 2008-02-06 2012-10-09 Whirlpool Corporation Refrigerator vacuum storage system
EP2054683B1 (de) * 2006-08-18 2016-10-12 BSH Hausgeräte GmbH Elektrischer kühlschrank mit vakuum-frischhaltesystem sowie entsprechendes kontrollverfahren
CN114370386A (zh) * 2020-10-15 2022-04-19 海信（山东）冰箱有限公司 冰箱抽真空控制方法及冰箱

Citations (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

Patent Citations (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

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 0154, no. 16 (M - 1172) 23 October 1991 (1991-10-23) *
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 16 8 May 2001 (2001-05-08) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2054683B1 (de) * 2006-08-18 2016-10-12 BSH Hausgeräte GmbH Elektrischer kühlschrank mit vakuum-frischhaltesystem sowie entsprechendes kontrollverfahren
US7669434B2 (en) 2008-02-06 2010-03-02 Whirlpool Corporation Refrigerator door vacuum preservation system
US8281606B2 (en) 2008-02-06 2012-10-09 Whirlpool Corporation Refrigerator vacuum storage system
CN114370386A (zh) * 2020-10-15 2022-04-19 海信（山东）冰箱有限公司 冰箱抽真空控制方法及冰箱
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

Also Published As

Publication number Publication date
FR2869675B1 (fr) 2006-08-04
ATE456774T1 (de) 2010-02-15
EP1591735B1 (de) 2010-01-27
ES2338127T3 (es) 2010-05-04
DE602005019120D1 (de) 2010-03-18
PL1591735T3 (pl) 2010-07-30
FR2869675A1 (fr) 2005-11-04

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