WO2006076975A1 - Machine a glace - Google Patents

Machine a glace Download PDF

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Publication number
WO2006076975A1
WO2006076975A1 PCT/EP2005/056280 EP2005056280W WO2006076975A1 WO 2006076975 A1 WO2006076975 A1 WO 2006076975A1 EP 2005056280 W EP2005056280 W EP 2005056280W WO 2006076975 A1 WO2006076975 A1 WO 2006076975A1
Authority
WO
WIPO (PCT)
Prior art keywords
ice
ice maker
sensor
tray
detection
Prior art date
Application number
PCT/EP2005/056280
Other languages
German (de)
English (en)
Inventor
Helen Lewis
Craig Duncan Webster
Nathan Wrench
Bernd Heger
Original Assignee
BSH Bosch und Siemens Hausgeräte GmbH
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 BSH Bosch und Siemens Hausgeräte GmbH filed Critical BSH Bosch und Siemens Hausgeräte GmbH
Priority to ES05817098T priority Critical patent/ES2377433T3/es
Priority to US11/795,583 priority patent/US20090193824A1/en
Priority to AT05817098T priority patent/ATE541168T1/de
Priority to EP05817098A priority patent/EP1844279B1/fr
Publication of WO2006076975A1 publication Critical patent/WO2006076975A1/fr

Links

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
    • F25C—PRODUCING, WORKING OR HANDLING ICE
    • F25C1/00—Producing ice
    • F25C1/10—Producing ice by using rotating or otherwise moving 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
    • F25C5/00—Working or handling ice
    • F25C5/18—Storing ice
    • F25C5/182—Ice bins therefor
    • F25C5/187—Ice bins therefor with ice level sensing means
    • 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
    • F25C2600/00—Control issues
    • F25C2600/04—Control means

Definitions

  • the present invention relates to an automatic ice maker comprising a tray having at least one automatically deflatable compartment for forming a piece of ice, a storage compartment for receiving pieces of ice formed in the compartment and a sensor for detecting the presence of pieces of ice in the storage compartment.
  • the senor is formed by a motor-driven pivoting lever which dips from above into the storage chamber until its further movement is hindered by pieces of ice therein.
  • the position in which the pivotable lever comes into contact with the ice pieces present in the storage container must be recorded and evaluated.
  • Object of the present invention is to provide an ice maker, which allows a simple, reliable and inexpensive realizable detection of ice pieces in a pantry.
  • the sensor of the ice maker has a transmitter and a receiver for a detection beam, which can interact with pieces of ice in the storage chamber in interaction.
  • the transmitter and the receiver are disposed on opposite sides of the storage chamber. This makes it possible to detect the presence of ice from a weakening of the detection beam due to absorption and / or scattering of the beam on the ice pieces.
  • transmitter and receiver adjacent to one side of the storage chamber and a reflector for the detection beam on an opposite side of the storage chamber, but there is an increased possibility of a falsification of the detection result by scattered radiation.
  • the senor is an optical sensor. This is inexpensive realizable. If the sensor uses light in the visible spectral range, the functionality of its transmitter is recognizable to a user without aids.
  • a sensor is further provided which serves to detect the presence of a removable reservoir in the storage chamber.
  • a sensor is further provided which serves to detect the presence of a removable reservoir in the storage chamber.
  • the storage container should expediently be permeable to the detection beam, so that transmitter and / or receiver can be arranged below an upper edge of the storage container placed in the storage chamber and thus are able to detect pieces of ice before the level of the reservoir exceeds its upper edge.
  • the permeability can be achieved by using a workpiece for the reservoir, which is transparent to the detection beam, but it is also conceivable to form a window for the passage of the detection beam in the reservoir, which window can easily be made so small that Ice pieces can not fall through.
  • the detection beam in the ice maker runs inclined, because this makes it possible to detect that the ice pieces in the storage container have a Henen exceed maximum level, which is below the upper edge of the container, even if only one of transmitter and receiver is located below the upper edge of the reservoir. Therefore, the detection beam crosses the wall of the reservoir only once and is only slightly attenuated at this.
  • the sensor for detecting the presence of the reservoir preferably comprises a detection body, which is displaced by the reservoir present in the storage chamber from an equilibrium position to an alternative position. Since the detection body assumes the equilibrium position, unless it is prevented from the reservoir, the presence of the reservoir at the position of the detection body can be seen.
  • the detection body interacts differently with the detection beam in its equilibrium position and in the avoidance position. This makes it possible to detect, based on the intensity of the detection radiator received by the transmitter, in which position the detection body is located, and consequently, whether the reservoir is present or not.
  • the interaction is designed so that the detection body in the equilibrium position attenuates the detection beam stronger than in the equilibrium position. Since ice present in the beam path also weakens the detection beam, if the intensity of the detection beam received by the receiver is greater than a predetermined limit value, it can be inferred that the reservoir is present and that it is not filled to the intended maximum, so that Ice may be produced. Conversely, if the intensity detected by the receiver is less than the limit, it may be due to the absence of the reservoir or the presence of ice; both are reasons to interrupt the ice cream production.
  • a particularly space-saving and robust construction results when the detection body is hollow and at least in the displaced position engages the transmitter or the receiver in the detection body.
  • Fig. 1 is an exploded view of an automatic ice maker according to a preferred embodiment of the invention
  • Figure 2 is a perspective view of the ice maker of Figure 1 in the assembled state with Eisrer tray in tilted position.
  • Fig. 3 is a front view of the ice maker of Fig. 1 and 2 in the direction of
  • FIG 4 shows the view of Figure 3 with partially cut sensor housing.
  • Fig. 5 is a view similar to Figure 2 view with ice maker tray in an upright position.
  • Fig. 6 is a view similar to Fig. 4 with the ice maker tray in upright
  • Fig. 7 is a perspective view similar to Figures 2 and 5 with the
  • FIG. 8 is a view analogous to FIGS. 4 and 6; FIG.
  • Fig. 10 is a view of the ice maker from below;
  • Fig. 11 is a section through the ice maker along the line Xl-Xl of Fig. 10, with
  • FIG. 12 is an enlarged detail of FIG. 11, partially in section along the line T-
  • Fig. 13 is a section through the ice maker along the line Xl-Xl of Fig. 10, with
  • FIG. 14 is an enlarged detail of FIG. 13, partially in section along the line T-
  • FIG. 1 shows an automatic ice cube maker according to the present invention for installation in a refrigerator in an exploded perspective view. It comprises a tray 1 in the form of a channel with a semi-cylindrical bottom, which is closed at their end sides in each case by transverse walls 2 and divided by uniformly spaced intermediate walls 3 in a plurality of identically shaped compartments 4, here seven pieces, with semi-cylindrical bottom , While the intermediate walls 3 are flush with the longitudinal wall 5 facing away from the observer, the longitudinal wall 6 facing the observer is extended beyond the upper edges of the intermediate walls 3. While the intermediate walls 3 are exactly semicircular, the transverse walls 2 in each case corresponding to the projection of the front longitudinal wall 6 on a sector 7 extending beyond the semicircular shape.
  • the tray is shown 1 in a tilted position, in which the upper edges of the segments 7 are substantially horizontal, while the intermediate walls 3 to the longitudinal wall 6 are downhill.
  • the tray 1 may be a plastic molding, preferably, because of the good thermal conductivity, it is designed as a cast aluminum.
  • a hollow cylinder 11 On one of the transverse walls 2 of the tray 1, a hollow cylinder 11 is mounted; he serves for the sheltered accommodation of a coiled supply cable 12, which for power supply to a not visible in the figure, on the underside of the tray. 1 mounted heater 13 (see Fig. 9) is used.
  • the tray 1 lies completely within an imaginary extension of the lateral surface of the hollow cylinder 11, which also represents the smallest possible cylinder into which the tray fits.
  • An axle journal 14 projecting from the transverse wall 2 facing the viewer extends on the longitudinal central axis of the hollow cylinder 11.
  • a molded plastic frame is designated 15. It has an upwardly and downwardly open cavity 16 which is provided to mount the tray 1 therein. On the end walls 17, 18 of the cavity 16 bearing bushes 19, 20 are formed for the pivotable mounting of the tray 1.
  • a longitudinal wall of the cavity 16 is formed by a box 21 which is provided to receive a drive motor 22 as well as various electronic components for controlling the operation of the icemaker.
  • a pinion 23 is mounted, which can be seen better in Figures 3, 4, 6 and 8 respectively as in Figure 2.
  • the gear 25 carries a projecting in the axial direction pin 26 which is provided to engage in a vertical slot 27 of a vibrating body 28.
  • the vibrating body 28 is guided horizontally displaceable by means of the front wall 17 in the cavity 24 projecting pin 29 which engage in a horizontal elongated hole 30 of the vibrating body.
  • a toothing 31 formed on a lower edge of the oscillating body 28 meshes with a toothed wheel 32, which is provided so as to be non-rotatably mounted on the stub axle 14 of the tray 1.
  • a to be screwed on the open side of the end wall 17 cover plate 33 closes the cavity 24.
  • a mounting flange 34 with laterally beyond the end wall 17 protruding tabs 35 is used for mounting the icemaker in a refrigerator.
  • a bottom plate 36 closes from below the box 21st
  • Fig. 2 shows, seen from the side of the end wall 18 and the box 21 ago, in a perspective view of the ice maker with the tray 1 in a tilted position.
  • the upper edges of the sectors 7 on the transverse walls 2 of the tray 1 are horizontal.
  • Fig. 3 shows a frontal view of the ice maker from the side of the end wall 17 ago, with cover plate 33 and mounting flange 34 are omitted to give the view into the cavity 24 of the end wall 17 free.
  • the configuration shown here is the one where the icemaker is assembled.
  • Various markings indicate a correct positioning of individual parts relative to each other.
  • a first pair of markings 37, 38 is located on the end wall 17 itself, or on the gear 26 carrying the pin 26.
  • the pin 26 is located in a three o'clock position, that is, on the right-most point of his path, which he can reach.
  • the mounted on the pin 26 and the stationary pin 29 vibrating body 28 is located at the right turning point of its path.
  • Aligned markings 39, 40 on a protruding beyond the sprocket flange 41 of the gear 32 and on the end wall 17 show a correct orientation of the gear 32 and consequently also with its journal 14 in a cross-sectionally T-shaped recess of the gear 32nd engaging tray 1 on.
  • An inherently redundant pair of markers 42, 43 on the teeth 31 of the pivot body 28 and the gear 32 indicates the correct positioning of the gear 32 and the oscillating body 31 with respect to each other.
  • a sensor 44 for detecting the rotational position of the gear 32 is mounted adjacent thereto. It cooperates with a rib 45 projecting from the edge of the flange 41 on a part of its circumference in the axial direction, so that it can dive into a slot at the rear of the sensor housing. In the tilted position of FIG. 3, the rib 45 is largely hidden by the sensor 44 and the vibrating body 28.
  • FIG. 4 differs from FIG. 3 in that the housing of the sensor 44 is shown partially cut away, so that two light barriers 46, 47 bridging the slot can be seen in its interior.
  • the rib 45 is located just above the two light barriers 46, 47 so that an unillustrated control electronics can recognize from the fact that both light barriers are open, that the tray 1 is in the tilted position and the drive motor 22 can stop to hold the tray 1 in the tilted position and can fill.
  • the drive motor 22 is set in motion by the control unit to bring the tray 1 in the upright position in which the amounts of water in the compartments 4 of the tray. 1 neatly separated from each other.
  • This position is shown in FIG. 5 in a perspective view corresponding to FIG. 2 and in FIG. 6 in a front view corresponding to FIG. 4.
  • the gear 25 is further rotated with respect to the position of Fig. 4 in the clockwise direction, but the same position of the tray 1 could also be achieved by a rotation of the gear 25 in the counterclockwise direction.
  • the achievement of the upright position is recognized by the fact that the rib 45 begins to obstruct the lower light barrier 47.
  • the tray 1 In the upright position, the tray 1 remains standing for a while until the water in the compartments 4 is frozen.
  • the standing time in the upright position can be fixed;
  • the control circuit may also be connected to a temperature sensor to determine a sufficient time at the measured temperature for freezing the water on the basis of a measured temperature in the environment of the tray 1 and a characteristic curve stored in the control circuit.
  • the compartments 4 of the tray 1 are open at the bottom, so that the pieces of ice contained therein can fall into a storage chamber, which is located below the frame 15.
  • the storage chamber can be limited by a not shown in the figures housing part of the ice maker; In the simplest and preferred case, the storage chamber is only a free space below the installation position of the frame 15 in a refrigerator. Such free space can also be used to store refrigerated goods other than pieces of ice when the icemaker is not in operation.
  • the already mentioned electric heater 13 is provided in order to facilitate the dissolution of the pieces of ice from the compartments 4, the already mentioned electric heater 13 is provided. As can be seen in FIG. 9, this heating device 13 is a looped electric heating rod which extends in close contact with the tray 1 between heat exchanger ribs 49 projecting from its underside and partly in one at the bottom of the tray 1 formed groove 48 is received.
  • the pieces of ice in the subjects 4 are superficially thawed.
  • the water layer thus produced between the tray 1 and the pieces of ice acts as a sliding film on which the pieces of ice are movable with very little friction. Due to the cylindrical segment cross-sectional shape of the compartments 4, the pieces of ice easily slide out of the compartments 4 and fall into a storage container 50 located in the storage compartment below the rack 15.
  • the drive motor is restarted, and the gear 25 is further rotated clockwise until it reaches the position shown in Fig. 2 to 4 again and begins a new cycle of operation of the icemaker.
  • the receptacle 50 formed of clear plastic material has substantially the shape of a cuboid whose open upper side extends under the entire extent of the frame 15 with the exception of its hollow end wall 17.
  • This end wall 17 has a downwardly directed projection 51, which extends to below the upper edge of the reservoir 50.
  • a concealed in Fig. 7 by the box 21 of the frame 15 detection body 52 is pivotally suspended about a vertical axis 53.
  • the detection body 52 is largely hidden in the perspective of Figure 8 by the reservoir 50 facing the outer surface of the projection 51. Only through two windows 54, 55 of the outer wall parts of the detection body 52 can be seen.
  • a coil spring 56 is wound around the axis 53 of the detection body 52 and has free ends engaging the outer wall of the projection 51; the spring 56 holds the detection body 52 pressed against the side wall of the reservoir 50.
  • the detection body 52 is part of a multi-purpose sensor, the structure and function of which is clearer from FIGS. 10 to 14.
  • Figure 10 shows a view of the frame 15 and the tray 1 suspended therein from below, wherein the tray is in a position corresponding to Figure 5.
  • An obliquely drawn over the box 21 of the frame 15 line Xl-Xl indicates the position of the sectional planes of the figures 11 and 13 at.
  • the detection body 52 is pressed by the adjoining side wall of the reservoir 50 against the force of the spring 56 in an evasive position, in which he largely immersed in the hollow side wall 17.
  • a window 58 of the detection body 52 is located on a straight line between the light emitting diode 57 and one sensitive to the light of the light emitting diode 57 Element 59, such as a photodiode, which is housed in the box 21 on a side opposite the wall 17 and is aligned by a window 60 in a sloping wall at the bottom of the box 21 to the light emitting diode 57.
  • a window 58 of the detection body 52 is located on a straight line between the light emitting diode 57 and one sensitive to the light of the light emitting diode 57 Element 59, such as a photodiode, which is housed in the box 21 on a side opposite the wall 17 and is aligned by a window 60 in a sloping wall at the
  • the icemaker operates only when the light intensity received by the photodiode 59 exceeds a predetermined threshold. If 50 pieces of ice are located on the beam path 61 between the light-emitting diode 57 and the photodiode 59 in the storage container, the light is scattered so strongly that the threshold at the photodiode 59 is undershot. Thus, the further generation of ice is suppressed when the level in the reservoir 50 reaches the beam path 61. Since this beam path 61 extends over part of its length below the upper edge of the storage container 50, the ice making is safely stopped before the storage container 50 can overflow.
  • FIG. 13 shows a section analogous to FIG. 11 through the frame 15, although here the reservoir 50 is removed.
  • the detection body 52 can the Pressure of the spring 56 yield and extends into its in Figure 13 and enlarged shown in Figure 14 equilibrium position.
  • the window 58 is no longer in the beam path 61, so that the detection body 52 blocks the light beam. Therefore, when the reservoir 50 is not present, sufficient light intensity does not arrive at the photodiode 59, and ice making is also stopped.

Abstract

L'invention concerne une machine à glace comprenant un bac pourvu d'au moins un compartiment qui peut être vidé automatiquement et dans lequel peut être formé un glaçon, une chambre de stockage (50) dans laquelle les glaçons produits dans le compartiment peuvent être stockés, ainsi qu'un capteur (57, 59) servant à détecter la présence de glaçons dans la chambre de stockage (50). Le capteur (57, 59) comprend un émetteur (57) et un récepteur (59) destinés à émettre et recevoir un faisceau de détection.
PCT/EP2005/056280 2005-01-24 2005-11-28 Machine a glace WO2006076975A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ES05817098T ES2377433T3 (es) 2005-01-24 2005-11-28 Máquina para hacer hielo
US11/795,583 US20090193824A1 (en) 2005-01-24 2005-11-28 Ice-Making Machine
AT05817098T ATE541168T1 (de) 2005-01-24 2005-11-28 Eisbereiter
EP05817098A EP1844279B1 (fr) 2005-01-24 2005-11-28 Machine a glace

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005003239A DE102005003239A1 (de) 2005-01-24 2005-01-24 Eisbereiter
DE102005003239.7 2005-01-24

Publications (1)

Publication Number Publication Date
WO2006076975A1 true WO2006076975A1 (fr) 2006-07-27

Family

ID=35752948

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/056280 WO2006076975A1 (fr) 2005-01-24 2005-11-28 Machine a glace

Country Status (6)

Country Link
US (1) US20090193824A1 (fr)
EP (1) EP1844279B1 (fr)
AT (1) ATE541168T1 (fr)
DE (1) DE102005003239A1 (fr)
ES (1) ES2377433T3 (fr)
WO (1) WO2006076975A1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7665316B2 (en) * 2005-10-25 2010-02-23 Japan Servo Co., Ltd. Automatic icemaker
DE102006061087A1 (de) * 2006-12-22 2008-06-26 BSH Bosch und Siemens Hausgeräte GmbH Kältegerät mit einem Eisbereiter
KR101535481B1 (ko) * 2008-04-15 2015-07-09 엘지전자 주식회사 냉장고 제빙기의 만빙 감지 장치
US8464543B2 (en) * 2010-03-08 2013-06-18 Whirlpool Corporation Door mounted ice level detection device
KR101523251B1 (ko) * 2011-05-03 2015-05-28 삼성전자 주식회사 제빙장치 및 이를 구비한 냉장고
EP2636975B1 (fr) * 2012-03-08 2016-11-16 Miele & Cie. KG Dispositif destiné à la fabrication de glaçons
KR101659932B1 (ko) * 2015-06-17 2016-09-30 동부대우전자 주식회사 만빙량 조절이 가능한 제빙장치와 만빙량 조절장치 및 방법
US9976788B2 (en) 2016-01-06 2018-05-22 Electrolux Home Products, Inc. Ice maker with rotating ice tray
US10465966B2 (en) 2017-07-07 2019-11-05 Bsh Home Appliances Corporation Ice making system and air flow circulation for slimline ice compartment
US10539354B2 (en) 2017-12-22 2020-01-21 Electrolux Home Products, Inc. Direct cooling ice maker
US11181309B2 (en) 2017-12-22 2021-11-23 Electrolux Home Products, Inc. Direct cooling ice maker
US11953253B2 (en) 2019-09-02 2024-04-09 Bsh Hausgeraete Gmbh Household ice maker and method of operating a household ice maker
DE102019213227A1 (de) 2019-09-02 2021-03-04 BSH Hausgeräte GmbH Optoelektronisches Modul für eine Lichtschranke zur Verwendung in einem Haushaltseisbereiter
US11598566B2 (en) 2020-04-06 2023-03-07 Electrolux Home Products, Inc. Revolving ice maker

Citations (4)

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Publication number Priority date Publication date Assignee Title
JPH05280848A (ja) * 1992-04-01 1993-10-29 Sharp Corp 自動製氷装置
US6067806A (en) 1998-08-31 2000-05-30 Daewoo Electronics Co., Ltd. Apparatus and method for controlling automatic ice machine
US6314745B1 (en) 1998-12-28 2001-11-13 Whirlpool Corporation Refrigerator having an ice maker and a control system therefor
US6414301B1 (en) * 1998-05-14 2002-07-02 Hoshizaki America, Inc. Photoelectric ice bin control system

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Publication number Priority date Publication date Assignee Title
US3635043A (en) * 1970-03-16 1972-01-18 Gen Electric Household refrigerator including automatic icemaker and door mounted ice storage receptacle
US4822996A (en) * 1986-04-03 1989-04-18 King-Seeley Thermos Company Ice bin level sensor with time delay
US6351958B1 (en) * 2000-01-12 2002-03-05 Whirlpool Corporation Optic level sensing system for use in a refrigerator

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
JPH05280848A (ja) * 1992-04-01 1993-10-29 Sharp Corp 自動製氷装置
US6414301B1 (en) * 1998-05-14 2002-07-02 Hoshizaki America, Inc. Photoelectric ice bin control system
US6067806A (en) 1998-08-31 2000-05-30 Daewoo Electronics Co., Ltd. Apparatus and method for controlling automatic ice machine
US6314745B1 (en) 1998-12-28 2001-11-13 Whirlpool Corporation Refrigerator having an ice maker and a control system therefor

Non-Patent Citations (1)

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Title
PATENT ABSTRACTS OF JAPAN vol. 018, no. 062 (M - 1553) 2 February 1994 (1994-02-02) *

Also Published As

Publication number Publication date
US20090193824A1 (en) 2009-08-06
ATE541168T1 (de) 2012-01-15
DE102005003239A1 (de) 2006-07-27
EP1844279B1 (fr) 2012-01-11
ES2377433T3 (es) 2012-03-27
EP1844279A1 (fr) 2007-10-17

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