Hoshizaki Denki Kabushiki Kaisha

Hoshizaki Electric Co., Ltd.

Junichi Hida

Susumu Tatematsu

Yasumitsu Tsukiyama

Naoya Uchida

Hideyuki Ikari

Yoshikazu Kito

Kazuhiro Mori

Syuji Kado

Sakichi Kawasumi

Shigetoshi Sakamoto

A protective device for an auger type ice making machine having an auger type ice making mechanism the refrigeration housing of which is located adjacent an ice storage bin and provided thereon with an ice discharge casing forming a lateral discharge passage for discharging ice pieces into the storage bin through an upright delivery chute. The protective device is in the form of a spout switch assembly which is mounted on an upper wall of the ice discharge casing at a position laterally displaced from an upper end of the refrigeration housing to detect ice pieces filled in the ice discharge casing during operation of the ice making mechanism.

Protective device for auger type ice making machine

Electric control apparatus for auger type ice making machine

An ice storage type food service counter composed of an ice storage tank 20 arranged to store an amount of ice and having a drain hole 24 at a bottom, an ice supply device 30 for automatically producing chips of ice and supplying them into the tank, an agitating device 40 arranged within the tank for agitating and leveling the chips of ice stored in the tank, a container assembly B detachably mounted on the agitating device 40 and placed on the stored chips of ice to contain drink and food therein, and a transparent cover plate 18 coupled over the ice storage tank 20, the cover plate having an opening through which the container assembly can be placed on the stored chips of ice.

Food service counter of the ice storage type

An auger type icemaker including an evaporator housing having a cylindrical inner freezing surface on which ice crystals may form, an auger mounted for rotary movement within the housing to be driven to scrape ice crystals off the freezing surface and to advance the scraped ice crystals toward an upper end portion of the housing, an extrusion head formed with a plurality of ice extruding passages and axially slidably coupled within an annular space between the upper end portion of the housing and an upper shaft portion of the auger, wherein a screw is threaded into the upper end portion of the housing and engaged with an axial key-groove of the extrusion head to restrict rotary movement of the extrusion head, and a cam mechanism mounted on the upper shaft portion of the auger to effect axial movement of the extrusion head in accordance with rotary movement of the auger and to restrict upward movement of the extrusion head at an upper dead point thereof.

Auger type icemaker

An auger type ice making machine having an evaporator housing vertically arranged above an ice storage bin, an auger mounted for rotary movement within the evaporator housing, an electric motor in drive connection with the auger, a compressor motor in drive connection with a compressor, an ice discharge duct provided on an upper end of the evaporator housing, an upstanding tubular delivery chute having an upper end connected to the discharge duct and a lower end in open communication into the storage bin, a movable detection plate provided within the upper end of the delivery chute to be moved by abutment with pieces of hard ice accumulated in the delivery chute, and an electric control apparatus for activating the motors when the detection plate is retained in an initial position and for deactivating the motors after lapse of a predetermined time when the detection plate has been moved from the initial position, the predetermined time being determined to be shorter than a time for which a space between the discharge duct and the detection plate is filled with the pieces of hard ice discharged from the duct after movement of the detection plate.

Auger type ice making machine

In an auger type ice making machine, an ice breaker mounted on an upper shaft portion of the auger includes a plurality of ice breaker elements adapted to be coaxially coupled as a unit, the breaker elements each having a circular body portion formed with a plurality of circumferentially equally spaced blades which extend radially outwardly at a predetermined angle, and the blades of the respective breaker elements being formed to be aligned at their lower edges in a condition where the breaker elements have been coaxially coupled at their body portions. The body portions of the breaker elements are connected to each other in such a manner that the blades of the breaker elements are circumferentially equally spaced at a selected angle.

An ice making machine comprises an ice storage section and an ice making machinery section disposed on the ice storage section through a bottom plate having an opening therein. The machinery section includes an ice discharge chute that extends downwardly through the opening and opens into the interior of the ice storage section. The bottom plate is provided with an upwardly concaved recess in which the opening is formed. The ice discharge chute projects through the opening to a depth smaller than that of the recess.

Ice making machine

An auger type ice making machine comprises an ice storage level detecting apparatus (5) including an ice storage level sensing plate (5a) disposed within an ice guide barrel (3) at a position opposing to an ice discharge port (2). A pair of guide plates (7) for guiding ice discharged from the ice discharged port toward a center portion of the ice storage level sensing plate are mounted on both side walls (3b) of the ice guide barrel (3) closely adjacent to the ice storage level sensing plate (5). By mounting the paired guide plates (7), gaps otherwise taking place between the ice storage level sensing plate (5) and the ice guide barrel (3) are closed to thereby prevent the ice from moving to the rear side of the ice storage level sensing plate by circumventing it. The ice storage level sensing plate is thus protected from being blocked. Another guide plate (9) inclined toward a center region of the ice storage level sensing plate (5) is provided on a ceiling plate (3a) of the ice guide barrel (3) closely adjacent to a tip end (5d) of the ice storage level sensing plate (5a) to thereby prevent ice from intruding between the ice storage level sensing plate and the ceiling plate (3a).

An electric control apparatus for an auger type ice making machine having an auger mounted for rotary movement within an evaporator housing to which water is supplied from a water tank to cause ice crystals to form on the internal freezing surface of the evaporator housing. The control apparatus includes a first water level detector disposed within the water tank to produce a first signal therefrom when a level of water in the tank has fallen to a lower limit level, a second level detector disposed within the water tank to produce a second signal therefrom the level of water has risen to an upper limit level, a timer cooperable with the second water level detector for measuring a predetermined period of time in response to the second signal, the period f time being determined to correspond with a time interval defined by the first and second signals in normal operation of the ice making machine, and a relay circuit cooperable with the first water level detector and the timer for rendering the ice making machine inoperative when the predetermined period of time has been measured by the timer before applied with the first signal.

An electric control apparatus for an auger type ice making machine having an auger mounted for rotary movement within an evaporator housing to which water is supplied form a water tank to cause ice crystals to form on the internal freezing surface of the evaporator housing. The control apparatus includes a first water level detector disposed within the water tank to produce a first signal therefrom when a level of water in the tank has fallen to a lower limit level, a second watr level detector disposed within th watr tank to produce a second signal therefrom the level of water has risen up to an upper limit level, a timer cooperable with the second water level detector for measuring a predetermined period of time in response to the second signal, the period of time being determined to correspond with a time interval defined by the first and second signals in normal operation of the ice making machine and adjusted taking into consideration a time for which operation of the ice making machine is made in a stable condition, and a relay circuit cooperable with the timer for rendering the ice making machine inoperative when the predetermined period of time has been measured by the timer before applied with the first signal.

A rotary cutter for an auger type ice making machine mounted on a rotatable shaft thereof comprises a plurality of cutter blades for cutting ice rods extruded from ice compressing passages into ice pellets or chips. Some of the cutter blades are integrally provided at an upper edge portion thereof with an ice feeding blade having an inclination relative to the center axis of the cutter which is smaller than that of the associated cutter blade. Owing to the provision of the ice feeding blades, the ice chips resulting from the cutting are prevented from staying at the upper edge portions of the cutter blades. As compression of ice between the cutter blades does not effectually take take between the cutter blades, the ice is not unncessarily hardened, facilitating extrusion of ice from the cutter.

Rotary cutter device for auger type ice making machine

An auger type ice making apparatus adapted for effectively flushing and removing deepended water and precipitates in the water supply pipe and the freezing cylinder during ice making. The apparatus includes a water inlet having a supply valve for supplying ice-making water into the ice-making water tank, a water level switch in the tank, a generally cylindrical freezing cylinder communicating with the inside of the ice-making water tank, a screw shaft rotatably mounted within the freezing cylinder and having a screw edge, a freezing portion including a compressor for supplying a refrigerant to a freezing pipe coiled about the outer periphery of the freezing cylinder, a water supplying pipe between the ice making water tank and freezing cylinder, a water discharge valve in the freezing cylinder, and a control circuit construction including a cleaning timer for controlling the water supply valve and the water discharge valve the cleaning timer and the water level switch are operative to open the water discharge valve during the time that the water supply valve is closed, whereby the inside of said water supply pipe and the freezing cylinder is cleaned with an amount of the ice-making water within the operating range of the water level switch in the ice-making water tank.

Auger type ice-making apparatus

A control circuit for an auger type ice maker using a relay which is responsive to a predetermined level of an ice making water in a tank and to of a predetermined level of stored ice, and a timer circuit responsive to the commencement of the ice making cycle which corresponds to the detection of the water level and the completion of the ice making cycle which corresponds to the detection of the ice level, both by the relay. This timer circuit is arranged so that during the starting operation it starts to drive the auger motor at the beginning of the ice making cycle and then after a first predetermined time starts to drive the compressor, and during the stopping operation, it stops the compressor after a second predetermined time after the detection of the completion of the ice making cycle and then after a third predetermined time stops the auger motor. Should a short interruption of the supply of water occur, the timer circuit can ignore it because of its delay time. A backup function is also provided for the case of an abnormal ice level of stored ice.

Control circuit for an auger type ice maker

A cutter for an auger type icemaker including an auger shaft with an auger edge to scrape and guide upward the ice formed on the inner surface of a refrigerated casing, an extrusion head fitted to the upper end portion of the auger shaft and provided with ice compressing passages, and a cutter attached to the upper end of the auger shaft over the extrusion head for breaking the ice from the ice compressing passages. A positioning portion is disposed on the upper end of the auger shaft to position the cutter at a predetermined circumferential location. The cutter is provided with a cutter edge supporting portion with an attaching portion which is attached to the positioning portion and which can change the positioning location of the cutter in cooperation with the positioning portion. The cutter is also provided with a plurality of cutter edges which are inclined in relation to the horizontal plane of the cutter edge supporting portion and which are fixed to the cutter edge supporting portion therearound at various pitches according to the various positioning locations. An angle of relief is disposed at each lower end of the cutter edges to release the ice upward.

Growing community of inventors

Nagoya, Japan

Junichi Hida