AU2004242446B2 - Apparatus for controlling container of refrigerator and method thereof - Google Patents

Apparatus for controlling container of refrigerator and method thereof Download PDF

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Publication number
AU2004242446B2
AU2004242446B2 AU2004242446A AU2004242446A AU2004242446B2 AU 2004242446 B2 AU2004242446 B2 AU 2004242446B2 AU 2004242446 A AU2004242446 A AU 2004242446A AU 2004242446 A AU2004242446 A AU 2004242446A AU 2004242446 B2 AU2004242446 B2 AU 2004242446B2
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AU
Australia
Prior art keywords
lower container
lifting
opening
container
mode
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.)
Ceased
Application number
AU2004242446A
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AU2004242446A1 (en
Inventor
Kyung-Han Jeong
Sang-Oh Kim
Seung-Hwan Oh
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LG Electronics Inc
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LG Electronics Inc
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Filing date
Publication date
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Publication of AU2004242446A1 publication Critical patent/AU2004242446A1/en
Application granted granted Critical
Publication of AU2004242446B2 publication Critical patent/AU2004242446B2/en
Ceased legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/02—Doors; Covers
    • 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
    • F25D25/00—Charging, supporting, and discharging the articles to be cooled
    • F25D25/02—Charging, supporting, and discharging the articles to be cooled by shelves
    • F25D25/024—Slidable shelves
    • F25D25/025—Drawers
    • 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
    • F25D25/00—Charging, supporting, and discharging the articles to be cooled
    • 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
    • F25D25/00—Charging, supporting, and discharging the articles to be cooled
    • F25D25/04—Charging, supporting, and discharging the articles to be cooled by conveyors
    • 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
    • F25D2500/00—Problems to be solved
    • F25D2500/02—Geometry problems

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Refrigerator Housings (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Description

P001 Section 29 Regulation 3.2(2)
AUSTRALIA
Patents Act 1990 COMPLETE SPECIFICATION STANDARD PATENT Application Number: Lodged: Invention Title: Apparatus for controlling container of refrigerator and method thereof The following statement is a full description of this invention, including the best method of performing it known to us:
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APPARATUS FOR CONTROLLING CONTAINER OF REFRIGERATOR AND SMETHOD THEREOF SBACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refrigerator, and more particularly, to an apparatus for controlling a container of a refrigerator and a method thereof.
2. Description of the Conventional Art Generally, a refrigerator is composed of an upper cooling chamber and a lower cooling chamber. A mechanical chamber in which a compressor, etc. are installed is formed at a rear lower portion of the lower cooling chamber.
A recent refrigerator is composed of an upper door and a lower door for independently opening and closing the upper cooling chamber and the lower cooling chamber. The upper door is moved by an opening/closing method, and the lower door is moved by a pulling/pushing method.
The conventional refrigerator will be explained with reference to FIGs. 1 and 2.
FIG. 1 is a perspective view showing a construction of a refrigerator in accordance with the conventional art, and FIG. 2 is a sectional view of a lower portion of a body of the refrigerator when a door is closed in accordance with the conventional art.
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SAs shown, the conventional refrigerator comprises: a body 11 having an N upper cooling chamber 12 and a lower cooling chamber 13 separated from each
(N
other based on a partition wall 17 formed in a horizontal direction therein; a plurality of upper doors 14 for opening and closing an opened front surface of the upper cooling chamber 12; and a lower door 15 for opening and closing an opened front surface of the lower cooling chamber 13. A mechanical chamber 21 Sfor accommodating a compressor 22, etc. is formed at a rear lower portion of the body 11.
The conventional refrigerator will be explained in more detail as follows.
The body 11 is composed of the upper cooling chamber 12 and the lower cooling chamber 13. The upper cooling chamber 12 and the lower cooling chamber are separated from each other by the partition wall 17 formed in a horizontal direction.
A pair of upper doors 14 are rotatably connected to the opened front surface of the upper cooling chamber 12.
The lower door 15 is connected to the opened front surface of the lower cooling chamber 13, and opens and closes the lower cooling chamber 13 by being slid in a back and forth direction of the body 11. A door rail 19 for supporting the lower door 15 to be slidable is installed at both inner walls of the lower cooling chamber 13 with a slidable state in a back and forth direction of the body 11. The lower cooling chamber 13 is provided with a plurality of drawers 18-1 and 18-2 having an upwardly opened box shape to store food, etc. therein.
A basket 16 having an upwardly opened box shape to store food, etc.
therein is provided at a rear surface of the lower door 15 with a slidable state in a back and forth direction of the body 11, and is integrally moved with the lower door However, in the conventional refrigerator, since the basket 16 provided at 0 the rear surface of the lower door 15 is installed at a low position, a user has to bend his or her waist or crouch at the time of storing food in the basket 16 or
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taking food out of the basket 16 thereby being inconvenienced.
Any discussion of documents, devices, acts or knowledge in this specification is included to explain the context of the invention. It should not be Ctaken as an admission that any of the material formed part of the prior art base or the common general knowledge in the relevant art in Australia on or before the priority date of the claims herein.
SUMMARY OF THE INVENTION It would be desirable to provide an apparatus for controlling a container of a refrigerator and a method thereof capable of solving a user's inconvenience at the time of storing food in the container or taking food out of the container by automatically lifting or lowering the container provided at a rear surface of a lower door of the refrigerator by the user's simple switch pressing operation.
To achieve this and other advantages, and in accordance with a first aspect of the present invention, as embodied and broadly described herein, there is provided an apparatus for controlling a container of a refrigerator including: a body having an upper cooling chamber and a lower cooling chamber having an opened front surface and separated from each other; an upper door for opening and closing the opened front surface of the upper cooling chamber; a lower door for opening and closing the opened front surface of the lower cooling chamber by being slid in a back and forth direction of the body; a lower container formed at a rear surface of the lower door to be movable in an up and down direction of the body and integrally slid with the lower door; a plurality of upper containers slidable in a back and forth direction of the body and formed at the rear surface of the lower door and at an upper portion of the lower container; and a control means having an input unit and a relay unit for controlling the lower container to be lifted or lowered.
IND
0 According to another aspect of the present invention there is provided a i method for controlling a container of a refrigerator including the steps of: 0 sensing an opening of the upper door and each opening of plural upper containers formed at a rear upper portion of the lower door; 00 S 5 receiving a user's selection signal for selecting a lifting mode or a lowering mode of a lower container installed at a rear lower portion of the lower door; and lifting or lowering the lower container based on an opening of the upper N door, each opening of the upper containers, and the user's selection signal.
i Further preferred aspects of this invention may be as defined in the 0 10 dependent claims 2 to 7 and 9 to 11 annexed hereto, which claims are hereby N made part of the disclosure of this invention.
The foregoing and other features, aspects and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings.
Comprises/comprising and grammatical variations thereof when used in this specification are to be taken to specify the presence of stated features, integers, steps or components or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, components or groups thereof.
BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention.
4a
IND
O In the drawings: SFIG. 1 is a perspective view showing a construction of a refrigerator in accordance with the conventional art; FIG. 2 is a sectional view of a lower portion of a body of the refrigerator oO 00 c 5 when a door is closed in accordance with the conventional art; FIG. 3 is a perspective view showing a construction of a refrigerator according to the present invention; C FIG. 4 is a flow chart showing a control method for a lower container of the
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Srefrigerator according to the present invention; and FIG. 5 is a circuit diagram for controlling a motion of the lower container of the refrigerator according to the present invention.
N 5 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
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OReference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings.
Hereinafter, with reference to FIGs. 3 to 5, will be explained an apparatus for controlling a container of a refrigerator and a method thereof capable of solving a user's inconvenience at the time of storing food in the container or taking food out of the container by automatically lifting or lowering the container provided at a rear surface of a lower door of the refrigerator by the user's simple switch pressing operation by providing a simple circuit for automatically controlling the container to be lifted or lowered.
FIG. 3 is a perspective view showing a construction of a refrigerator according to the present invention.
As shown, the refrigerator according to the present invention comprises: a body 11 having an upper cooling chamber and a lower cooling chamber having an opened front surface and separated from each other; an upper door 14 for opening and closing the opened front surface of the upper cooling chamber; a lower door 41 for opening and closing the opened front surface of the lower cooling chamber by being slid in a back and forth direction of the body 11; a lower container 32 formed at a rear surface of the lower door 41 to be slidable integrally with the lower door 41 and movable in an up and down direction of the body; a
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0 plurality of upper containers 18-1 and 18-2 slidable in a back and forth direction of the body and formed at the rear surface of the lower door and at an upper portion of the lower container; and a control means (not shown) for controlling the lower Icontainer 32 to be lifted or lowered.
N 5 Hereinafter, a method for controlling the container of the refrigerator according to the present invention will be explained with reference to FIG. 4.
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SFIG. 4 is a flow chart showing a control method for the lower container of the refrigerator according to the present invention.
As shown, the method for controlling the container of the refrigerator according to the present invention comprises the steps of: sensing an opening of the upper door and each opening of the plural upper containers formed at a rear upper portion of the lower door (S41); receiving a user's selection signal for selecting a lifting mode or a lowering mode of the lower container installed at a rear lower portion of the lower door (S42); and lifting or lowering the lower container based on an opening of the upper door, an opening of the upper containers, and the user's selection signal (S43).
The method for controlling the container of the refrigerator according to the present invention will be explained in more detail as follows.
First, the control means (not shown) includes: an input unit for receiving a user's selection signal for selecting a lifting mode or a lowering mode of the lower container; a relay unit for selecting a driving circuit for controlling a lifting mode of the lower container or a driving circuit for controlling a lowering mode of the lower container by the user's selection signal; a lifting unit for lifting or lowering the lower container according to the lifting mode or the lowering mode; a maximum sensing switch for sensing a maximum position of the lower container at the time of the
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a lifting mode of the lower container; a minimum sensing switch for sensing a Sminimum position of the lower container at the time of the lowering mode of the lower container; a first opening sensing switch for sensing an opening of the upper \door at the time of the lifting mode of the lower container; and a second opening c 5 sensing switch for sensing each opening of the plural upper containers at the time of the lifting mode of the lower container. The relay unit is composed of a first relay and a second relay interworked each other, and the input unit is composed of a first three-way switch and a second three-way switch interworked each other.
When the user opens the lower door 41, the first opening sensing switch senses an opening of the upper door and the second opening sensing switch senses an opening of the plural upper containers (341). The plural upper containers are composed of a left upper container (18-1) and a right upper container Also, the second opening sensing switch is composed of a left opening sensing switch and a right opening sensing switch. The left opening sensing switch senses an opening of the left upper container 18-1, and the right opening sensing switch senses an opening of the right upper container 18-2.
When the user selects a lifting mode or a lowering mode of the lower container, the input unit 33 receives a selection signal for selecting the lifting mode or the lowering mode of the lower container (342).
The control means (not shown) lifts or lowers the lower container on the basis of results sensed by the first opening sensing switch, the left opening sensing switch, and the right opening sensing switch and the selection signal (S43).
That is, when at least one of the upper door 14, the left upper container 18-1, and the right upper container 18-2 is opened, a power supply to the lifting 7
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Sunit is cut-off and thereby the lower container 32 is not lifted or lowered. On the Nother hand, when none of the upper door 14, the left upper container 18-1, and the
(N
right upper container 18-2 is opened, the lifting unit lifts or lowers the lower container 32 by the selection signal. The lifting unit is composed of a lifting mode N 5 button and a lowering mode button. While the lifting mode button is pressed, the lifting unit continuously lifts the lower container 32 in a lifting mode. Also, while the
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C lowering mode button is pressed, the lifting unit continuously lowers the lower container 32 in a lowering mode. As the lifting unit, a direct current motor is preferably used.
When the lower container 32 reaches a preset position in the lifting mode, the maximum sensing switch senses the lower container 32 and cuts off a power supply to the lifting unit thereby to stop the lifting of the lower container 32. Also, when the lower container 32 reaches a preset position in the lowering mode, the minimum sensing switch senses the lower container 32 and cuts off a power supply to the lifting unit thereby to stop the lowering of the lower container 32.
When an overload is applied to the lifting unit at the time of the lifting mode, that is, when an object or a part of a user's body is fitted into the lower container at the time of the lifting mode, the lifting of the lower container 32 can be stopped by cutting off a power supply to the lifting unit by a current breaker.
A control circuit for the container of the refrigerator according to the present invention will be explained in more detail with reference to FIG. FIG. 5 is a circuit diagram for controlling a motion of the lower container of the refrigerator according to the present invention.
Referring to FIG. 5, SW1 denotes the maximum sensing switch, SW2 denotes the left opening sensing switch for the left upper container, SW3 denotes Sthe right opening sensing switch for the right upper container, SW4 denotes the C opening sensing switch for the upper door, SW5 denotes the minimum sensing
(N
switch, SW6 denotes the input unit, K1 denotes the relay unit, CON2 denotes the direct current (Dc) motor o the lifting unit, and J2 is a current limiter.
(1 5 When the user presses the lowering mode button, two interworked threeway switches of the input unit respectively connect points 2 and 1 and points Sand 4. Also, two interworked relays of the relay unit respectively connect points and 7 and points 4 and 8. According to this, power VCC is connected to the DC motor of the lifting unit via the point 2, the point 1, and the SW5, and is connected io to a ground via the point 8, the point 4, and the point 5, thereby forming a driving circuit for controlling the lowering mode. The lifting unit connected to the driving circuit for controlling the lowering mode lowers the lower container 32. When the user stops pressing the lowering mode button while the lower container 32 is moved in the lowering mode, the SW6 is opened and thereby the power VCC is not supplied to the DC motor of the lifting unit any longer thus to stop the DC motor. Also, even if the user continues to press the lowering mode button, when the lower container 32 reaches a preset position, that is, when the lower container 32 reaches the initial start position, the SW5 is opened and thereby the power VCC is not supplied to the DC motor any longer thus to stop the DC motor.
When the user presses the lifting mode button, two interworked three-way switches of the input unit respectively connect points 2 and 3 and points 5 and 6.
Also, two interworked relays of the relay unit respectively connect points 18 and 8 and points 6 and 7. According to this, the power VCC is connected to the DC motor of the lifting unit via the point 2, the point 3, the SWl, the SW2, the SW3, and the SW4 and is connected to the ground via the point 7, the point 6, and the 9 Spoint 5, thereby forming a driving circuit for controlling the lifting mode. At this time, N since a current direction in the lifting mode is opposite to a current direction of the
(N
lowering mode, a rotation direction of the DC motor in the lifting mode is opposite \t to a rotation direction of the DC motor in the lowering mode. The lifting unit c 5 connected to the driving circuit for controlling the lifting mode lifts the lower container 32 when the SW2, the SW3, and the SW4 are closed, that is, when an Sopening of the left upper container 18-1, an opening of the right upper container 18-2, and an opening of the upper door are not sensed. When the user stops pressing the lifting mode button while the lower container 32 is moved in the lifting mode, the SW6 is opened and thereby the power VCC is not supplied to the DC motor of the lifting unit any longer thus to stop the DC motor. Also, when the lower container 32 reaches a preset position, the SWl is opened and thereby the power VCC is not supplied to the DC motor of the lifting unit any longer thus to stop the DC motor. Also, when an overload is applied to the DC motor at the time of the lifting mode, that is, when an object or a part of a user's body is fitted into the lower container at the time of the lifting mode, the power VCC is not supplied to the DC motor of the lifting unit any longer thereby to stop the DC motor.
When the upper door is completely opened, there is no problem in lifting the lower container. Therefore, the lower container is lifted by the lifting mode button.
As aforementioned, in the present invention, the container provided at a rear surface of the lower door of the refrigerator is automatically lifted or lowered by the user's simple switch pressing operation. According to this, the user's inconvenience caused when food is to be stored in the container or to be taken out from the container can be solved.
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SAlso, in the present invention, the circuit for automatically controlling the N, container provided at the rear surface of the lower door of the refrigerator to be
(N
lifted or lowered by the user's simple switch pressing operation is provided.
As the present invention may be embodied in several forms without N 5 departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, unless otherwise specified, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the metes and bounds io of the claims, or equivalence of such metes and bounds are therefore intended to be embraced by the appended claims.

Claims (10)

  1. 2. The apparatus of claim 1, wherein the input unit receives a user's selection signal for selecting a lifting mode or a lowering mode of the lower container and the relay unit selects a driving circuit for controlling a lifting mode of the lower container or a driving circuit for controlling a lowering mode of the lower container by the user's selection signal.
  2. 3. The apparatus of claim 2, wherein the control means further includes: a lifting unit for lifting or lowering the lower container according to the lifting mode or the lowering mode; a maximum sensing switch for sensing a maximum position of the lower container at the time of the lifting mode of the lower container; a minimum sensing switch for sensing a minimum position of the lower container at the time of the lowering mode of the lower container; a first opening sensing switch for sensing an opening of the upper door at the time of the lifting mode of the lower container; and 0 a second opening sensing switch for sensing each opening of the plural Scontainers at the time of the lifting mode of the lower container.
  3. 4. The apparatus of claim 3, wherein the input unit includes a first switch for 00 N electrically connecting the lifting unit and the driving circuit for controlling the lifting mode of the lower container; and a second switch for electrically connecting the lifting unit and the driving ccircuit for controlling the lowering mode of the lower container. The apparatus of claim 3, wherein the input unit includes two interworked N three-way switches, the lifting unit includes a direct current motor, and the relay unit includes two interworked relays.
  4. 6. The apparatus of claim 3, wherein the first opening sensing switch is turned off when the upper door is closed and is turned on when the upper door is opened thereby to electrically connect the lifting unit and the driving circuit for controlling the lifting mode when the upper door is closed.
  5. 7. The apparatus of claim 3, wherein the second opening sensing switch is turned off when an opening of at least one of the plural upper containers is sensed thereby to prevent a conversion of the lower container into a lifting mode.
  6. 8. A method for controlling a container of a refrigerator including the steps of: sensing an opening of the upper door and each opening of plural upper containers formed at a rear upper portion of the lower door; receiving a user's selection signal for selecting a lifting mode or a lowering mode of a lower container installed at a rear lower portion of the lower door; and lifting or lowering the lower container based on an opening of the upper door, each opening of the upper containers, and the user's selection signal.
  7. 9. The method of claim 8, wherein the step of sensing an opening of the upper door or each opening of the upper containers, causes the user's selection signal for lifting the lower container to be cut off. O 10. The method of claim 8, wherein when the lower container is lifted up to a Spreset position, the user's selection signal for lifting the lower container is cut off. U a,
  8. 11. The method of claim 8, wherein when the lower container is lowered to a 00 N preset position, the user's selection signal for lowering the lower container is cut off.
  9. 12. An apparatus for controlling a container of a refrigerator substantially as herein described with reference to Figures 3 to 5 of the accompanying drawings.
  10. 13. A method for controlling a container of a refrigerator substantially as herein described with reference to Figures 3 to 5 of the accompanying drawings. DATED this 2 7 th day of December 2006 LG ELECTRONICS INC WATERMARK PATENT TRADE MARK ATTORNEYS P25053AU00 RLT/CVC/MEH
AU2004242446A 2004-11-09 2004-12-22 Apparatus for controlling container of refrigerator and method thereof Ceased AU2004242446B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR91031/2004 2004-11-09
KR1020040091031A KR100619757B1 (en) 2004-11-09 2004-11-09 Refrigerator with basket rise and fall unit and moving control method of the basket rise and fall unit

Publications (2)

Publication Number Publication Date
AU2004242446A1 AU2004242446A1 (en) 2006-05-25
AU2004242446B2 true AU2004242446B2 (en) 2007-01-18

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US (1) US20060096304A1 (en)
EP (1) EP1655562A3 (en)
KR (1) KR100619757B1 (en)
CN (1) CN100404986C (en)
AU (1) AU2004242446B2 (en)

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KR100555826B1 (en) * 2003-10-04 2006-03-03 엘지전자 주식회사 Refrigerator
US20060066188A1 (en) * 2004-09-28 2006-03-30 Crawford John D Retractable storage system

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KR20060042449A (en) 2006-05-15
KR100619757B1 (en) 2006-09-07
US20060096304A1 (en) 2006-05-11
CN1773202A (en) 2006-05-17
EP1655562A3 (en) 2006-07-26
CN100404986C (en) 2008-07-23
EP1655562A2 (en) 2006-05-10
AU2004242446A1 (en) 2006-05-25

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