EP1757880B1 - Machine comprenant un récipient et un dispositif de commande du basculement dudit récipient - Google Patents

Machine comprenant un récipient et un dispositif de commande du basculement dudit récipient Download PDF

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Publication number
EP1757880B1
EP1757880B1 EP06114076A EP06114076A EP1757880B1 EP 1757880 B1 EP1757880 B1 EP 1757880B1 EP 06114076 A EP06114076 A EP 06114076A EP 06114076 A EP06114076 A EP 06114076A EP 1757880 B1 EP1757880 B1 EP 1757880B1
Authority
EP
European Patent Office
Prior art keywords
container
rotation
machine according
motor
tilting
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.)
Active
Application number
EP06114076A
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German (de)
English (en)
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EP1757880A1 (fr
Inventor
Cesarino Maroli
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.)
Brema Ice Makers SpA
Original Assignee
Brema Ice Makers SpA
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
Priority claimed from EP05425446A external-priority patent/EP1736722A1/fr
Application filed by Brema Ice Makers SpA filed Critical Brema Ice Makers SpA
Priority to EP06114076A priority Critical patent/EP1757880B1/fr
Publication of EP1757880A1 publication Critical patent/EP1757880A1/fr
Application granted granted Critical
Publication of EP1757880B1 publication Critical patent/EP1757880B1/fr
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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
    • 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
    • F25C2305/00—Special arrangements or features for working or handling ice
    • F25C2305/022—Harvesting ice including rotating or tilting or pivoting of a mould or tray
    • F25C2305/0221—Harvesting ice including rotating or tilting or pivoting of a mould or tray rotating ice mould

Definitions

  • the invention relates to a machine according to the preamble of claim 1.
  • a machine is known, for example, from FR-A-2 522 123 . It comprises a device for controlling the tilting of a container and is usable in particular, but not exclusively, for producing ice-cubes, and the following description is provided with reference to this field of application for the sole purpose of simplifying the presentation thereof.
  • GB-A-2 090 955 describes a machine for producing ice cubes comprising a water tray connected to a shaft rotatable by means of a geared motor and means for interconnecting the motor and the shaft including a torsion spring.
  • controlling the positioning of the container by means of a tab envisages that the container, when tilting, locks itself in the event that it meets an obstacle during its movement; this locking causes a stoppage of the machine, which can be set in motion again only by manual intervention to remove the obstacle.
  • Another aim of the present invention is to guarantee greater safety for a user who might absent-mindedly place a hand in the vicinity of the moving container.
  • a further aim of the present invention is to provide a device that is easier to assemble than those used in the prior art.
  • the container rotates until it meets the first mechanical check means, and the right-angle structure, continuing the rotation with the motor member, actuates the means for reversing the rotation of the motor member, bringing back the container into the normal position, until it meets the second mechanical check means. Also in this situation, the right-angle structure continues the reverse rotation with the motor member and actuates means for blocking rotation of the motor member.
  • Figure 1 shows an assembly comprising container and device 1 for controlling the tilting, applied to the container 4, in a first embodiment of the present invention, in particular in a limit position for loading (horizontal position), while Figure 2 shows the same assembly comprising container 4 and device 1 in a tilting limit position (inclined position).
  • the device 1 is seated on a support surface 20 which may belong to machinery for various uses, in particular for producing ice.
  • the device may be seated on the frame of a machine.
  • the device 1 comprises a motor member 2 (shown in Figure 3 ) connected by means of a shaft 7 to a container 4.
  • the motor member 2 comprises a small electric motor 5 coupled to a geared motor 6;
  • the electric motor 5 is, for example, of the type produced by Saia Burgess supplied at 230 V, 50 Hz frequency with an input capacity of 0.068 ⁇ F.
  • the rotary motion of said motor 5 is transmitted to the geared motor 6; this also is produced, for example, by Saia Burgess.
  • a pin 8 permits the engagement between a rotation shaft 9, for rotation of the container 4, and the geared motor 6, therefore linking the rotation of the container 4 to that of the shaft 7 of said geared motor.
  • the container 4, shown briefly in Figure 1 and in more detail in Figure 3 is sub-divided into two troughs 10 and 11;
  • the first trough 10 has dimensions close to those of the entire container, is located in the vicinity of the rotation shaft 9 and is intended to receive water for producing ice;
  • the second trough 11 is of smaller dimensions than the first, is located on the opposite side of the container 4 with respect to the rotation shaft 9 and receives the water discharged from the first at the moment when the container begins to tilt.
  • the device 1 for controlling the tilting of a container into the tilting limit position is shown in Figure 2 , together with the container 4, where the components in common with Figure 1 retain the same reference numbers.
  • the container 4, in this phase is locked in a downwardly inclined position with respect to the support surface 20, by means of a bend 12 provided on the same support surface; the bend 12 may be, more generally, any mechanical check means able to cause the container 4 to pass from a tilting position into a locking position.
  • the device 1 further comprises a balance structure 30, fixed on the support surface 20 and secured to the motor member 2, in particular to the geared motor 6, for example by means of two through screws seated in the holes 21 and 22.
  • the balance structure 30 is shown in Figures 1, 2 , 3 and separately in greater detail in Figure 4a , in which all the parts of which it is composed are numbered.
  • the balance structure 30 comprises a pair of loading members 70, 71 comprising in turn two guide pins 31 and 32, which have respective support bases 33 and 34, are secured to the support surface 20 and onto which two springs 35 and 36 are fitted.
  • the guide pins 31 and 32 and the respective springs are secured to a base 37 of a right-angle structure 38 by means of screws 45, 46, in particular hexagonal-headed screws, tightened onto special washers 39 and 40, such that the springs 35 and 36 remain interposed between the aforesaid base 37 and the bases 33 and 34 of the guide pins.
  • the right-angle structure 38 further has a side 41 perpendicular to the base 37, in contact with the outer surface of the geared motor 6, on which there are seating holes 21 and 22 for the screws for fixing to the geared motor 6 itself and a further hole 42 in which there sits the shaft 7 equipped with the through pin 8 which permits the engagement between the rotation shaft 9, of the container 4, and the geared motor 6.
  • a second side 43 forming part of the right-angle structure 38 is arranged partly perpendicular to the base 37 and to the side 41, and as regards the remainder diverges from the side 43 at a predetermined angle by means of a tab 44 which fits into a position interposed between two microswitches 51 and 52, shown in Figures 1 and 2 , and which control the direction of rotation of the shaft of the motor member 2 and consequently the rotation of the container 4 about the rotation shaft 9.
  • Figure 4b shows a constructional variant of the balance structure 30 according to Figure 4a ; the two figures have the same reference numbers, in respect of the components present in both of them.
  • FIG. 5a shows a front view of the aforesaid structure, in which it will be noted that the seating holes 21 and 22 for the screws for fixing to the geared motor 6 and present on the side 41 perpendicular to the base 37, have been provided on an axis inclined with respect to the latter and, consequently, with respect to the support surface 20; this inclination mirrors the inclination of the longitudinal axis of the geared motor 6 with respect to that of the balance structure 30.
  • Figure 5c shows a view from above of the right-angle structure 38 in which holes 55 and 56 occupied by the guide pins 31 and 32 are visible.
  • Figure 5b shows a side view of the right-angle structure 38.
  • the guide pins 31 and 32 are shown in greater detail in Figures 6a - 6c ; in particular, Figure 6a shows a front view of the pin, in which at least one facet for coupling to the right-angle structure 38 may also be provided.
  • Figure 6b shows a view from above of the pin 31, 32 and Figure 6c shows a sectional view; in the latter it is possible to note the presence of a cavity 58 which is within the pin, parallel to the longitudinal axis, and which passes through the pin itself from the base 33 or 34 as far as the screw, in particular the special washer 39 or 40.
  • Figures 7a and 7b show in greater detail the spring 35, respectively in top view and in front view.
  • Figures 8a and 8b show in greater detail the special washer 39 or 40, respectively in a sectional view and in a top view.
  • the device 1 for controlling the tilting of a container 4 initially has the container 4 in a horizontal position parallel to the support surface 20, as shown in Figure 1 .
  • the container 4 is preferably kept in the horizontal position by a flexion spring not shown in the drawings and by the absence of rotation of the electric motor 5 and, therefore, of the shaft 7 of the geared motor 6, which determine the absence of rotation also of the shaft 9 of the container 4. In this position, the container is in contact with a rise limit member 60. More generally, this member 60 is nothing more than a mechanical check member able to prevent the container 4 from going beyond the horizontal loading position.
  • the container During the stage of formation of the ice cubes, the container is in the position described; once the moment of the start of tilting is determined, the container 4 rotates about the shaft 9 and moves away from the limit member 60.
  • the electric motor 5 transmits a clockwise rotary motion to the geared motor 6 which, in turn, sets in rotation the shaft 7 engaged, via the through pin 8, with the rotation shaft 9 for rotation of the container 4; this continues its own descending rotation until it comes into abutment on the bend 12 provided on the support surface 20.
  • the container 4 remains locked; consequently the shaft 9 remains locked, in turn also keeping the shaft 7 of the geared motor locked.
  • the balance structure 30 permits the geared motor 6, rotating anticlockwise on itself, to load the spring 35 and partially load the spring 36, having the effect that all the torque delivered by the electric motor 5, amplified by the reduction ratio of the geared motor 6, is not completely discharged onto the gearwheels of the motor member 2.
  • the horizontal position of the container 4 is defined by the' limit member 60; when the container 4 comes into abutment on said member, it is blocked.
  • the balance structure 30 permits the geared motor, rotating clockwise on itself, to load the spring 36 and partially load the spring 35, with the result that all the torque delivered by the motor, amplified by the reduction ratio of the geared motor 6, is not completely discharged onto the gearwheels of the motor member 2.
  • the initial prestress of the springs added to the descent limit loading (tilting position of the container) or rise limit loading (horizontal position for loading) makes it possible to keep the torque delivered constantly below the maximum torque that, can be withstood by the kinematic chain of the geared motor 6.
  • the container 4 if during the phase of descending rotation the container 4 should meet an obstacle left erroneously or absent-mindedly in the path of its movement, it will reverse the direction of rotation in the same way as it reverses the direction of rotation when it reaches the descent limit member, without causing any damage either to the device or to the obstacle touched.
  • the system guarantees complete safety for a user who absent-mindedly places a hand in the gap below the container while extracting the ice previously produced by the machinery.
  • the device would suspend rotation of the geared motor 6 in the same way as it suspends rotation when it reaches the rise limit member; the device 1, however, remains in the locked position until the removal of the obstacle that has blocked the movement of the container 4.
  • the device 1 for controlling the tilting of a container with the balance structure 30 according to the present invention, would bring the container into the horizontal position for the start of the loading stage.
  • the balance structure 30, not being welded onto the shaft for rotation of the container, but on the contrary being capable of rectifying itself autonomously, is not subject to problems of manual readjustment that exist in the prior art; the device according to the invention is therefore simpler to assemble.
  • only one of the loading members 71, 72 has a spring fitted on it, while the second is not fitted with a spring; the spring is preferably mounted on the loading member closest to the tab 44; in the figure, therefore, this spring is that denoted by 36 and the loading member onto which it is fitted is that denoted by 71.
  • the loading member 72 without spring or with resilient members of a different nature, acts as a spacer between the right-angle structure 38 and the support base 33. Only the spring 36 performs balancing of the force exerted by the right-angle structure 38 so as to change the direction of rotation of the motor 5.
  • At least one of the loading members comprises an electric transducer denoted by 150 in Figures 9 and 10 , where parts corresponding to those in Figures 1 and 2 will have the same reference numbers increased by 100.
  • this electric transducer 150 is of the piezoelectric type; it comprises a crystal, in particular a quartz crystal, which is sensitive to the force exerted on the loading member 171 by the right-angle structure 38, when the container 4 contacts the bend 112 or the limit member 160.
  • the transducer emits a signal of difference in potential corresponding to the intensity of the force applied onto the member 171.
  • the electric transducer 150 is set to function within a permitted range of forces exerted by the right-angle structure 38 on the loading member 171; within this' range continuous operation of the device during titling or repositioning is ensured.
  • the value of the difference in potential generated by the transducer is transferred, after passing through any suitable amplification circuit, to the electric motor 5, in order to control the direction of rotation thereof.
  • the transducer When the value of the force exerted on the loading member 171 exceeds the predefined range, the transducer generates a signal which varies the power supply of the electric motor 5, which may cause either reversal or stoppage of rotation of the shaft 7 of the geared motor and, consequently, of the shaft 9 of the container 4.
  • the transducer 150 connected directly to the electric motor 5, replaces entirely the system composed of the tab 44 and the microswitches 51, 52 of the first embodiment.
  • the variant of the first embodiment and the second embodiment described ensure less mechanical stress on the tilting device, ensuring an increase in the working life thereof.
  • the present invention provides a device for controlling the tilting of a container which is reliable in terms of operation, is not dependent upon manual mechanical adjustments, and does not pose any risk during use, even for inexpert users.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Claims (13)

  1. Machine comprenant un récipient (4) siégeant sur un cadre fixe (20, 120) de la machine et un dispositif (1, 101) destiné à commander le basculement dudit récipient (4), comprenant un élément de moteur (2) ayant un premier arbre (7) mécaniquement raccordé à un second arbre (9), raccordé de manière rigide au récipient (4, 104), et avec lequel le récipient (4, 104) tourne pour trouver ledit basculement, ledit dispositif comprenant en outre :
    - un premier moyen de vérification mécanique (12, 112) disposé sur le cadre (20, 120), pour interrompre la rotation de basculement du récipient (4, 104),
    - un second moyen de vérification mécanique (60, 160), fixé au cadre (20, 120) pour interrompre ledit récipient (4, 104) pendant la rotation dans le sens opposé au sens de basculement,
    caractérisée en ce qu'elle comprend :
    - une structure d'équilibre (30, 130) comprenant à son tour une structure à angle droit (38), des éléments de chargement (70, 71, 72, 170, 171), associés à la structure à angle droit (38), sensibles au déplacement de cette dernière et empêchant tout le couple délivré par un moteur électrique (5) d'être complètement déchargé sur les roues dentées de l'élément de moteur (2), la structure d'équilibre (30) étant raccordée de façon rigide à l'élément de moteur (2) et capable de tourner avec celui-ci autour dudit arbre (7), et
    - un moyen (44, 51, 52, 150, 38) pour inverser et bloquer la rotation dudit élément de moteur (2), actionné par ladite structure à angle droit (38) pendant sa rotation avec ledit élément de moteur (2) afin d'inverser ou de bloquer la rotation du récipient (4, 104), au moment d'un contact de ce dernier avec lesdits premier (12, 122) et second (60, 160) moyens de vérification mécaniques.
  2. Machine selon la revendication 1, dans laquelle l'élément de chargement (70, 71) comprend au moins un ressort de compression (35, 36).
  3. Machine selon la revendication 1 ou 2, dans laquelle le moyen d'inversement et de blocage comprend une languette d'actionnement (44) positionnée entre un premier microrupteur (51) pour inverser la rotation dudit élément de moteur (2) et un second microrupteur (52) pour bloquer la rotation dudit élément de moteur (2).
  4. Machine selon la revendication 1, dans laquelle le moyen d'inversement et de blocage comprend un transducteur électrique (150) capable de détecter la force exercée sur la structure à angle droit (38) et de la convertir en un signal de commande électrique pour le moteur (5), de façon à commander ce dernier pendant l'inversement de la rotation ou le blocage.
  5. Machine selon la revendication 4, dans laquelle le transducteur électrique est de type piézoélectrique.
  6. Machine selon l'une des revendications précédentes, dans laquelle la structure à angle droit (38) comprend à son tour une base (37), un premier côté (41) perpendiculaire à la base (37), fixé à l'élément de moteur (2), et un second côté (43) à son tour perpendiculaire au côté (41) et à la base (37), à partir duquel la languette d'actionnement (44) diverge afin d'établir un contact avec les microrupteurs (51, 52).
  7. Machine selon la revendication 6, dans laquelle le premier côté (41) est fixé à l'élément de moteur (2) au moyen de vis traversantes logeant dans des trous (21, 22).
  8. Machine selon la revendication 6 ou 7, dans laquelle le côté (41) comprend en outre un trou (42) destiné à loger ledit premier arbre (7).
  9. Machine selon l'une quelconque des revendications précédentes, dans laquelle l'élément de chargement (70, 71, 72) comprend en outre au moins une broche de guidage (31, 32) ayant une base de support (33, 34) sur laquelle le au moins un ressort de compression (35, 36) est fixé.
  10. Machine selon la revendication 9, dans laquelle la broche de guidage (31, 32) et le au moins un ressort de compression (35, 36) sont fïxés à la base (37) de la structure à angle droit (38), par le biais d'un moyen de serrage (39, 40, 45, 46), de sorte que le au moins un ressort de compression (35, 36) est interposé entre la base (37) et la base (33, 34) de la broche de guidage (31, 32).
  11. Machine selon la revendication 10, dans laquelle le moyen de serrage (39, 40) est constitué de rondelles spéciales.
  12. Machine selon la revendication 10, dans laquelle le moyen de serrage (44, 45) est constitué de vis à tête hexagonale.
  13. Machine selon les revendications 1 à 12, destinée à produire de la glace.
EP06114076A 2005-06-20 2006-05-17 Machine comprenant un récipient et un dispositif de commande du basculement dudit récipient Active EP1757880B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06114076A EP1757880B1 (fr) 2005-06-20 2006-05-17 Machine comprenant un récipient et un dispositif de commande du basculement dudit récipient

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP05425446A EP1736722A1 (fr) 2005-06-20 2005-06-20 Dispositif de commande du basculement d'un récipient
EP06114076A EP1757880B1 (fr) 2005-06-20 2006-05-17 Machine comprenant un récipient et un dispositif de commande du basculement dudit récipient

Publications (2)

Publication Number Publication Date
EP1757880A1 EP1757880A1 (fr) 2007-02-28
EP1757880B1 true EP1757880B1 (fr) 2008-08-27

Family

ID=37667872

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06114076A Active EP1757880B1 (fr) 2005-06-20 2006-05-17 Machine comprenant un récipient et un dispositif de commande du basculement dudit récipient

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EP (1) EP1757880B1 (fr)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2526262A (en) * 1948-09-21 1950-10-17 Coltemp Corp Automatic ice cube producing and storing apparatus
US3027731A (en) * 1959-08-06 1962-04-03 Milton L Lindenberg Ice cube making machine
IT8120442V0 (it) * 1981-01-09 1981-01-09 Castel Mac Spa Macchina perfezionata per laproduzione di cubetti di ghiaccio.
FR2522123B1 (fr) * 1982-02-25 1986-10-24 Simkens Marcellus Dispositif pour former des cubes de glace
DE69326360D1 (de) * 1992-07-31 1999-10-14 Hoshizaki Electric Co Ltd Eiserzeugungsmaschine
IT232673Y1 (it) * 1994-01-11 2000-01-19 Eurfrigor S R L Macchina per la produzione di blocchetti di ghiaccio, provvista di un dispositivo di sicurezza, contro il sovraccarico del meccanismo di

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