JP2017122512A - Fine ice manufacturing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fine ice manufacturing machine capable of discharging in a form of soft ice which is made by an auger while stabilizing operation by smoothly discharging the manufactured fine ice.SOLUTION: A fine ice manufacturing machine comprises: a collecting part 4b that rotates in accordance with the rotation of the rotating shaft of an auger 5 in that, in a plan view, the distance between a collecting surface and the inner wall of an upper housing opposed thereto is gradually increased in the rotational direction from the tip part close to the inner wall of the upper housing; and means for collecting fine ice 4 in that the collecting part is disposed in the height region of a discharge outlet 20, the rotating collecting part 4b scrapes the upper end portion of the aggregate formed of fine ice that moves upward by the rotation of the auger 5 and collects it with the inner wall of the upper housing, and as the collecting part rotates, the collected fine ice is discharged at the point of the discharge outlet 20.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a fine ice making machine for producing powdered snow-like or sherbet-like fine ice suitable for maintaining the freshness of fresh seafood, high-quality fruits and the like.

For example, sherbet-shaped fine ice made of salt water such as seawater may be used to maintain freshness of fresh seafood. It is difficult to maintain freshness for a long time with simple seawater, and lump ice is not sufficient for scratching fresh fish and shellfish during transportation and cooling capacity is insufficient, while fine ice is used for fresh seafood stored in a container. It is said that it fills the gaps with seafood and adheres to the surface of fresh fish and shellfish, has good cold insulation and is excellent in maintaining freshness.
For these reasons, several inventions of a machine for producing fine ice have been proposed (for example, Patent Document 1).

JP 2003-42611 A

However, Patent Document 1 states in paragraph 0019 that “the supply of seawater from the replenishing tank (10) to the ice making section (1) is such that the water level and concentration in the ice making section (1) are kept constant. In the paragraph 0027, “the smooth sherbet-like or powdery ice produced in the stirring section (14) is gradually pushed upward by the increase in its volume while being stirred by the stirring blade (7)”. The pushed-up ice is transferred further upward by the auger screw (12) in the transfer part (15) and taken out from the take-out port (9) opened in the take-out part (16). " Even if intermittent operation is possible, long-term continuous operation is difficult. Even if it is attempted to take out fine ice from the take-out port (9), it is difficult to take out fine ice, and the fine ice accumulates around the take-out portion (16) with the passage of time. Then, the accumulated fine ice may be clogged and the ice making machine may be overloaded, and may be locked inoperable.
Conventional ice making machines including Patent Document 1 generally have a structure in which fine ice that has been made is pushed up and discharged from the take-out port, leading to a state in which the space of the take-out portion around the take-out port (9) is filled with fine ice. End up. It is easy to proceed to a state where the inside of the take-out part is clogged, and the rotational load of the auger screw (12) is increased, which hinders continuous operation. If fine ice stagnates in the take-out part, there is a problem that ice that has re-freezes on the inner wall of the take-out part adheres and grows. Moreover, since the fine ice was pushed up and discharged from the take-out port, it was pressed and hardened, and even if it was called fine ice, it was easy to form a hard ice mass.

  The present invention solves the above-mentioned problem, and smoothly discharges fine ice that has been made, stabilizes continuous operation as well as intermittent operation, and soft ice made by an auger in its state or close to it. An object is to provide a machine for producing fine ice that can be discharged.

In order to achieve the above object, the gist of the invention described in claim 1 is that a cylindrical upper housing (2) is fixed to a cylindrical cylinder (1), and is disposed upright. The outer periphery (12) was cooled, and the ice (IC) generated on the cylinder inner wall (13) was scraped with an auger (5) to make fine ice (M) and moved upward, and provided in the upper housing (2). A fine ice making machine for discharging the fine ice (M) from the discharge port (20), which rotates in accordance with the rotation of the rotating shaft of the auger (5) and is close to the inner wall (23) of the upper housing From the front end portion (411) toward the rotation direction, in a plan view, the collection portion (4b) gradually increases the distance (W) between the collection surface (43) and the upper inner wall (23) facing the collection surface (43). The auger (5) is provided with a means for collecting fine ice (4) provided so as to spread and the collection part (4b) disposed in the height region of the discharge port (20). The fine ice (M) The rotating collection part (4b) is scraped off the upper end (G1) of the assembly (G) and collected by the inner wall (23) of the upper housing, and the collection part (4b) The fine ice production machine is characterized in that the fine ice (M) collected with the rotation is discharged at the point of the discharge port (20).
According to a second aspect of the present invention, there is provided a machine for producing fine ice according to the first aspect, wherein the collecting part (4b) is formed in an arcuate part (41) in plan view. According to a third aspect of the invention, there is provided a fine ice making machine according to the second aspect, wherein the collecting means (4) is provided with an auxiliary arcuate part (42a) having the same shape in plan view above the arcuate part (41). A collecting tool (4a) provided with an annular body (42) extending and having the auxiliary arcuate portion (42a) as a part of a circle or an ellipse in plan view is provided. According to a fourth aspect of the present invention, there is provided a machine for producing fine ice according to the first to third aspects, wherein the bearing (61) for supporting the upper shaft (52) of the auger (5) is located below the discharge port (20). A boss (62) provided in the upper housing (S) and holding the bearing (61) has an outer peripheral surface (621) and an upper housing inner wall (23) formed by a plurality of standing pieces (63). Connected and fixed to the upper housing (2), and further in the upper housing (S), on the upper end of the upper shaft (52) protruding upward from the bearing (61), the collecting means (4) Is fixed and mounted. According to a fifth aspect of the present invention, there is provided a machine for producing fine ice, wherein the projection (7) toward the inside of the upper housing (S) is fixed to the upper plate portion (2b) of the upper housing (2). The lower end (76) of the protrusion (7) is projected downward to the vicinity of the upper edge (45) of the collecting tool (4a) in a front view. According to a sixth aspect of the present invention, there is provided a machine for producing fine ice, wherein the upper edge (45) of the collecting tool (4a) is set lower than the upper end (205) of the discharge port (20). The lower edge (46) of the collecting tool (4a) is set lower than the lower end (206) of the discharge port (20).

  The fine ice making machine of the present invention collects the ice made in a soft state and further smoothly discharges the collected fine ice to the discharge port without particularly applying pressure. Without being overloaded, stable continuous operation is possible, and soft fine ice is obtained, which has a great effect on productivity and quality.

It is the whole schematic explanatory drawing which displayed a partial cross section with one form of the fine ice manufacturing machine of this invention. FIG. 2 is an explanatory sectional view of an upper portion of the generator in FIG. 1. It is the cross-sectional view seen from the upper side by the height of the collection part of FIG. In FIG. 2, it is an expanded sectional view around the upper housing after supplying salt water. FIG. 3 is a plan view of a main part according to the upper housing of FIG. 2. It is a longitudinal cross-sectional view of FIG. (A) is a plan view of the collecting means, (b) is a side view of the collecting tool of (b), and (c) is a cross-sectional view in the height region of the collecting part of (b). (A) is an explanatory cross-sectional view in which fine ice is collected at the collection part, (b) is an explanatory cross-sectional view after a lapse of time from (a), and (c) is discharged to the discharge port after (b). FIG. FIG. 9 is a partially enlarged view of FIG. FIG. 10 is a diagram illustrating another embodiment instead of FIG. It is the principal part perspective view of the generator which removed the upper board part and was seen from the main part upper part of the upper housing. FIG. 3 is a longitudinal sectional view of a machine for producing fine ice for comparison with FIG. 2. FIG. 13 is a cross-sectional view of the impeller of FIG. 12 at a height level.

  Hereinafter, the fine ice making machine according to the present invention will be described in detail. FIGS. 1 to 11 show an embodiment of the fine ice making machine of the present invention. FIG. 1 is an overall explanatory view partially shown in cross section, FIG. 2 is an explanatory cross sectional view of the upper part of the generator in FIG. 4 is an enlarged cross-sectional view around the upper housing of FIG. 2, FIG. 5 is a plan view of the main portion of the upper housing of FIG. 2, and FIG. 6 is a longitudinal section of FIG. FIG. 7 is a plan view of the collecting means, (b) is a side view of the collecting tool of (b), and (c) is a cross section at the height of the collecting part of (b). 8 is an explanatory diagram in which the collecting unit collects fine ice and discharges it to the discharge port, FIG. 9 is a partially enlarged view of FIG. 8 (a), and FIG. 10 is another embodiment in place of FIG. FIG. 3 is a perspective view of a main part of the generator as viewed from above the upper housing with the upper plate portion removed. Each drawing is drawn with emphasis on the components of the present invention, and the illustration of the flange coupling bolts and nuts of the upper flanges 16 and 27, the lower flange 26 and the upper plate portion 2b is omitted except for FIG.

(1) Fine ice production machine The fine ice production machine is a continuous production machine for fine ice by a so-called scraping method among methods for continuously producing fine ice M from salt water SW such as seawater. A cylindrical cylinder 1 is disposed upright with a covered cylindrical upper housing 2 fixed thereto. Then, the outer peripheral portion 12 of the cylinder 1 is cooled, and the ice IC generated on the cylinder inner wall 13 is scraped by the auger 5 and moved upward as fine ice M, and the fine ice M is discharged from the discharge port 20 provided in the upper housing 2. It is a device that discharges. Here, “the cylindrical housing 1 is fixed to the cylindrical cylinder 1 with the covered upper housing 2 standing upright” means that the cylinder 1 to which the upper housing 2 is fixed stands upright and the upper housing 2. Including the case of standing upright slightly toward In FIG. 2, “upper” indicates the upper side of the paper surface, and “lower” indicates the lower side of the paper surface, which is the vertical direction.

The fine ice making machine includes a generator A as an ice making unit (ice making body), a refrigerator R, and a salt water supply means K (FIG. 1).
The refrigerator R includes a known compressor MC and a condenser CN. The compressor MC, the condenser CN, the expansion valve V, and the refrigerant flow path 19 of the cylinder 1 are connected by a refrigerant pipe PE, and a refrigerant RF for cooling the cylinder inner wall 13 is circulated to form a refrigeration cycle. When the cylinder 1 is filled with the salt water SW, the refrigerator R can attach and form a cylindrical membrane ice IC having a thickness of several mm to several tens of mm on the peripheral surface of the cylinder inner wall 13 (FIG. 4).

  The salt water supply means K includes a known pump P, filter F, and ultraviolet sterilizer UV. A device for feeding salt water SW (or water) such as seawater having a predetermined concentration into the cylinder 1, and the salt water SW fed into the pump P passes through the filter F and passes through the ultraviolet sterilizer UV to the lower housing 3. Into the cylinder 1 (FIG. 1). The salt water SW referred to in the present invention includes water that does not contain salt.

The generator A is a main part (ice making part) of an ice making machine that produces fine ice M, and includes a cylinder 1, an upper housing 2, a lower housing 3, an auger 5, a gear motor 8, and a collecting means 4.
The cylinder 1 has a cylindrical shape and is a vertically long cylindrical body that generates ice IC on the inner wall 13 by cooling the outer peripheral portion 12 outside the inner wall 13. The upper housing 2 and the lower housing 3 Secure the joining flange. The cylinder 1 of the present embodiment is a cylindrical body in which a refrigerant flow path 19 as shown in FIG. 2 is formed between the outer peripheral surface of the inner cylinder main portion 14 and the inner peripheral surface of the outer cylinder sub-portion 15.
A bottom housing 3 having a bottomed cylindrical shape is attached and fixed to the bottom end of the cylinder 1 so as to cover it, and a bearing for pivotally supporting the lower portion of the auger 5 is provided on the lower housing 3. Also, a cylinder-shaped upper housing 2 is attached and fixed to the upper end of the cylinder 1 so as to cover it, and a bearing 61 (in this case, a slide bearing) that pivotally supports the upper portion of the auger 5 is attached to the upper housing 2. An auger 5 is provided upright in the cylinder 1.

The auger 5 includes a main body 51 provided with a blade 55, an upper shaft 52 extending upward from the main body 51, and a lower shaft 53 extending downward from the main body 51. On the outer peripheral surface of the main body 51 that fits in the cylinder 1, a scraping blade 55 that scrapes off the ice IC is formed in a spiral shape as shown in the figure. The auger 5 passes through a bearing provided in the lower housing 3, and a lower shaft 53 protrudes from the lower housing 3 (FIG. 1).
The gear motor 8 is connected to the protruding lower shaft 53. By the rotation of the gear motor 8, the salt water SW is cooled and the membranous ice IC generated on the cylinder inner peripheral wall 13 is scraped by the scraper blade 55 to make fine ice M. The solid fine ice M scraped off by the blade 55 is dispersed in the salt water SW between the auger 5 and the cylinder inner peripheral wall 13, but the fine blade ice 55 provided in a spiral form is rotated by the rotation of the auger 5. Ice M heads upward.

As shown in FIGS. 2 to 6, the upper housing 2 is a covered cylindrical body in which an upper plate portion 2b is detachably attached and fixed to the upper tube opening side of the cylindrical main portion 2a with bolts and nuts. A discharge port 20 is provided in the inner wall of the cylinder at a substantially intermediate height portion of the main portion 2a. Surrounding the periphery of the discharge port 20, the pipe inner wall 210 protrudes outward in a tangential manner as shown in FIGS. 3 to 8 with respect to the cylindrical main portion 2 a from the joint point between the discharge port 20 and the upper housing inner wall 23. Thus, the outlet pipe 21 is fixed by welding.
The bearing 61 that pivotally supports the upper shaft 52 of the auger 5 is disposed in the upper housing S in a region below the discharge port 20, and a boss 62 that holds the bearing 61 is connected to the outer peripheral surface 621. The upper housing inner wall 23 is connected to the upper housing 2 by a plurality of standing pieces 63. Here, as shown in FIGS. 5 and 6, the four standing pieces 63 are erected at intervals of 90 ° in plan view, and the boss 62 and the housing inner wall 23 are connected and fixed. The upper edge of the standing piece 63 is preferably set higher than the boss upper surface 622. This is because in the cylinder 1, the liquid level SW1 of the salt water SW is normally set higher than the upper surface 622 of the boss 62, and ripples appear when the auger 5 starts to rotate, but this can be suppressed. Further, it is preferable to provide the boss upper surface 622 with a concave groove 622a that runs in a radial direction from the bearing 61 portion to the boss outer peripheral surface 621 portion (FIGS. 5 and 11). Even if the liquid level SW1 of the salt water SW falls below the boss upper surface 622 due to the liquid level fluctuation, the salt water SW can cool and remove the frictional heat generated in the bearing 61 under the rotation of the auger 5 through the concave groove 622a. is there.
Thus, the upper shaft 52 of the auger 5 is supported by the bearing 61 provided in the upper housing 2, and the collecting means 4 is provided at the upper end portion of the upper shaft 52 protruding upward from the bearing 61 in the upper housing S. Is fixed.

The collection means 4 has a collection portion 4b that rotates in accordance with the rotation of the rotating shaft of the auger 5 and that is disposed radially outward within the cylindrical main portion 2a. The collection portion 4b has a configuration in which a distance W between the collection surface 43 and the upper inner wall 23 facing the collecting surface 43 gradually increases in a plan view from the tip portion 411 adjacent to the upper housing inner wall 23 in the rotation direction. The collecting means 4 is a collecting device for the fine ice M provided with the collecting portion 4b. A rotating shaft separate from the auger 5 may be provided, and the collecting means 4 may be attached to the rotating shaft, and rotated. However, here, the collecting means 4 is fixed to the upper shaft 52 of the auger 5 for the collecting means. The rotational drive source is omitted.
The tip portion 411 adjacent to the upper housing inner wall 23 is preferably set close to the upper housing inner wall 23 in the range of 1 mm to 3 mm. If the clearance ε between the upper housing inner wall 23 and the tip portion 411 is less than 1 mm (FIG. 4), the tip portion 411 may rub against the housing inner wall, the dimensional accuracy becomes severe, and the production of the apparatus and the fine ice M is high. This is because the cost is increased. Further, if it exceeds 3 mm, the ability to collect the fine ice M of the collecting part 4b is rapidly reduced. The collection unit 4b is disposed in the height region of the discharge port 20, and serves not only to collect the fine ice M but also to discharge the fine ice M. In the present invention, “the collection portion 4 b is disposed in the height region of the discharge port 20” is sufficient if a portion of the collection portion 4 b in the height direction is included in the height range of the discharge port 20. . This is because the collection unit 4b can play a role of releasing the fine ice M. Of course, the whole height direction of the collection part 4b may be included in the height range of the discharge port 20.

  As shown in FIG. 9, the collection portion 4b is centered on the rotational axis O of the collection means 4 (axial center of the auger 5), and has a plan view length with a central angle θ of at least 15 ° or more from the tip portion 411. And has a predetermined length in the vertical direction, and includes a collecting surface 43 for fine ice M facing the inner wall 23 of the upper housing. The collection part 4b is a part of the collection tool 4a. Although the collecting portion 4b having a central angle θ of 15 ° is sufficient, the collecting portion 4b provided with a portion extending beyond the angle of 15 ° is used to make the collection of the fine ice M more rocky. be able to. However, the central angle θ is preferably 180 ° or less (more preferably 90 ° or less). It is because it cannot be expected that the collection rate of the fine ice M will be increased even if it is further increased. In the present invention, “the interval W between the collecting surface 43 and the upper housing inner wall 23 facing the surface gradually increases toward the rotation direction” is not limited to the case of literally increasing gradually, but toward the rotation direction. This includes the case where the interval W is partially the same in one section. This is because the same effect as the present invention can be obtained. "The interval W between the collecting surface 43 and the upper housing inner wall 23 opposite to this gradually increases" means that, for example, in addition to the arc-shaped collecting portion 4b as shown in FIG. Even the collecting part 4b constituted by the part 48 satisfies the requirement.

As described above, the salt water SW is injected from the lower housing 3 into the cylinder 1, but the liquid level SW1 is higher than the bearing 61 (more preferably, the boss upper surface 622) and is at a level lower than the collecting portion 4b. Be controlled. This is because during the rotation of the auger 5, the temperature rise due to the friction of the bearing 61 can be lowered by the salt water SW.
Thereafter, the refrigerator R is operated to form a film of ice IC on the inner peripheral wall 13 of the cylinder, and the gear motor 8 is driven to scrape the ice IC with the scraping blade 55 to obtain fine ice M in the auger 5. Disperse in the salt water SW between the outer peripheral surface and the cylinder inner wall 13. The rotation of the auger 5 causes the fine ice M to move upward, but the amount of the fine ice M scraped with the scraper 55 in the upper part increases and the density of the fine ice M in the salt water SW increases. Becomes a sherbet. The fine ice M that moves upward by the rotation of the auger 5 eventually forms a cylindrical aggregate G in which the distance between the outer peripheral surface of the auger 5 and the cylinder inner wall 13 is the cylinder thickness. When the cylindrical assembly G moves upward and passes over the auger body 51 and proceeds to the space between the boss outer peripheral surface 621 and the cylinder inner wall 13, the cylindrical assembly G changes to a cylindrical assembly G with the interval between them as the cylinder thickness. It tends to go. However, in this embodiment, the outer diameter of the outer surface of the auger body 51 and the outer surface of the boss 621 are substantially the same, and the cylindrical thickness of the cylindrical assembly G on the upper surface of the auger body 51 and the boss upper surface 622 is substantially the same. Be the same. Further, by the rotation of the auger 5, the cylindrical assembly G is lifted from the liquid level SW1 as shown in FIG. 4, and its upper end G1 advances upward from the liquid level SW1. The fine ice M rising from the liquid level SW1 is removed by dropping the liquid contained therein.
In the present invention, the rotating collection part 4b scrapes the upper end part G1 of the cylindrical aggregate G formed by the fine ice M that moves upward by the rotation of the auger 5 and collects it with the inner wall 23 of the upper housing. In addition, it is a fine ice making machine that discharges the collected fine ice M at the point of the discharge port 20 with rotation. The ice IC generated on the cylinder inner wall 13 is scraped off by the auger 5 rotated by the gear motor 8, and the scraped fine ice M is collected by the collecting means 4, and further the fine ice M is collected in the discharge port of the upper housing 2. Smooth release to 20 (details will be described later).

  In the present embodiment, the collecting means 4 includes a curved plate-like collecting portion 4b as shown in FIG. The collecting means 4 includes a collecting tool 4a and a mounting portion 4c. The collection part 4b here is formed in the arc-shaped part 41 which secures predetermined height to an up-down direction, and expands outward like FIG. 9 by planar view. Further, an auxiliary arcuate portion 42a having the same shape in plan view extends above the arcuate portion 41, and the annular body 42 in which the auxiliary arcuate portion 42a is a part of a circle or an ellipse in plan view is the arcuate portion 41. It is set as the collector 4a united with. Since the annular body 42 is provided, the strength of the collecting means 4 is increased with a simple structure, and for example, deformation of the arc-shaped portion 41 at the time of collecting the fine ice M is suppressed. In addition, it is better not to make the arc-shaped part 41 into an all-around ring like the annular body 42. If the continuous operation is performed for a long time, the ice cubes M gather in the ring and a large lump accumulates. As the collector 4a rotates, the large lump rotates along with the salt water SW that should be on the boss upper surface 622. This is because the cooling of the bearing 61 is hindered.

  The collecting means 4 is provided with a plate-like mounting portion 4c fixed to the auger 5 in the center, and a pair of collecting tools 4a is integrated on both sides of the mounting portion 4c to collect the fine ice M as shown in FIG. A collecting member. A female screw hole is formed in the upper end surface 521 of the upper shaft 52 of the auger 5, and a through hole 49 is provided at the position of the mounting portion 4c corresponding thereto. After the through hole 49 is aligned with the female screw hole and the mounting portion 4c is placed on the upper shaft upper end surface 521 as shown in FIGS. 2 and 4, the shaft portion of the bolt BT is passed through the through hole 49, and then the female screw The collecting means 4 is fixed to the upper portion of the upper shaft 52 by screwing into the hole. In the collecting means 4, the mounting portion 4 c is bolted to the upper end surface 521 of the upper shaft 52 in the upper housing S, and the annular body 42 is more flat than the upper shaft 52 with the mounting portion 4 c being flush with the upper surface. Projects horizontally outward (FIG. 11). An arcuate portion 41 having a circular arc shape in plan view extends downward from the annular body 42. Here, the planar view angle θ is about 30 °, and the arc-shaped portion 41 has a ¼ arc shape (FIG. 9). The collecting means 4 under such a state is an axial object with respect to the central axis of the auger 5. When the collection portion 4b is formed in an arc shape as shown in FIG. 7C and set in the upper housing, the tip end portion 411 protrudes most outward in the cylindrical main portion 2a (FIG. 8). The collection part 4b is made into the cross-sectional shape of a perpendicular direction. The arcuate portion 41 constituting the collection portion 4b is spaced from the front end portion 411 adjacent to the upper housing inner wall 23 in the rotational direction, in a plan view, between the collection surface 43 and the upper housing inner wall 23 opposed thereto. W is disposed so as to gradually spread (FIG. 9). In the collecting portion 4b, the distance W between the wide end portion 415 where the distance W becomes the largest in the direction of rotation and the housing inner wall 23 is set to exceed the cylinder thickness (about 1 cm in this case) of the cylindrical assembly G. More preferably. This is because the upper end portion G1 of the cylindrical assembly G can be collected without being missed by the rotation of the collection portion 4b. In the present embodiment, at a point where the angle θ is 15 °, the interval W has already exceeded the cylinder thickness of the cylindrical assembly G, and can be sufficiently collected.

  In FIG. 3, the collection unit 4 b rotates in the counterclockwise arrow direction together with the auger 5, but the cylinder 1 is filled with the salt water SW to the vicinity of the boss upper surface 622, and the refrigerator R is operated. Under the driving state, it moves as shown in FIG. When the collection part 4b passes the discharge port 20 and reaches the point (a), the cylindrical assembly G of fine ice in FIG. 4 rotates the auger 5 even in the limited short time zone. As a result, the height rises beyond the lower edge 412 (the lower edge 46 of the collecting tool 4a) of the collecting portion 4b by, for example, the height h1 shown in FIG. Of the upper end G1 of the cylindrical aggregate G of fine ice, this rising amount that collides with the collecting portion 4b is scraped off by the lower end portion of the collecting portion 4b being scraped off by the rotation of the collecting means 4 The fine ice M is taken in and held in an enclosure formed by the collecting portion 4b and the inner wall 23 of the upper housing. Even if the upper end G1 of the cylindrical aggregate G is scraped off, the aggregate G is merely gathered in the course of the countless granular fine ice M rising, and the collection that rotates the upper end G1. It can be easily scraped off by the part 4b. Of the cylindrical aggregate G, it is fine ice M obtained by scraping the upper end G1 floating above the liquid surface SW1 and drained of salt water at the lower end of the collection part 4b, and is soft and fine fine ice M Is taken into the enclosure. The interval W between the collection surface 43 of the collection unit 4b and the upper inner wall 23 facing the collection surface gradually increases, the mouth is wide open in the direction of rotation of the collection unit 4b, and a cylindrical assembly of fine ice The upper end G1 of the body G can be easily taken into the enclosure. The collecting portion 4b of the present embodiment is provided with a widened end portion 415 in which the planar view angle θ extends more than 15 ° in the rotation direction and the interval W is further increased. The upper end G1 of the body G can be taken into the enclosure more reliably.

  In the following progression from (a) to (b) in FIG. 8, as in (a), even in that short time zone, the cylindrical aggregate G of fine ice is rotated by the rotation of the auger 5. As shown in FIG. 4, it rises a little over the lower edge of the collection part 4b. The rising amount of fine ice M is scraped off by the collecting portion 4b and taken into the enclosure formed by the collecting portion 4b and the cylinder inner wall 13 to increase the amount of fine ice M. At this time, the force as shown by the thick black arrow in FIG. 8 (b) acts on the fine ice M taken in the enclosure by the relative movement with respect to the rotational movement of the collecting portion 4b. The fine ice M once taken into the enclosure never goes out of the enclosure. The fine ice M scraped off at the lower edge portion of the collecting portion 4b moves toward the leading end portion 411 with respect to the progress, and the fine ice M to be newly scraped is collected into the collecting portion 4b and the inner wall 23 of the upper housing 23. And will be accepted well into the enclosure. Moreover, the collection part 4b, the collection tool 4a, and the upper housing inner wall 23 have the same height and predetermined height in the vertical direction as shown in the figure. When the fine ice M obtained by scraping the upper end G1 of the cylindrical assembly G that moves upward at the lower edge portion of the collecting portion 4b by the rotation of the collecting means 4 is successively sent into the enclosure, the fine ice M is moved upward and held in the enclosure between the collection portion 4b and the inner wall 23 of the upper housing.

  Then, when the collection part 4b rotates and reaches the point (c), the inner wall 23 of the upper housing is interrupted and the discharge port 20 appears. When the upper housing inner wall 23 opposite to the outlet 20 is replaced with the outlet 20 by the progress of the collecting portion 4b, it has been taken into the enclosure formed by the collecting portion 4b and the upper housing inner wall 23 until then. The fine ice M loses the upper housing inner wall 23 that has been held around the outer periphery of the fine ice M, and is thrown out. Moreover, since the centrifugal force due to the rotation of the collecting portion 4b is acting on the fine ice M in the enclosure between the collecting portion 4b and the upper housing inner wall 23, the fine ice M is black as shown in FIG. As indicated by the thick arrow, the centrifugal force smoothly discharges the outlet 20 to the outside of the outlet pipe 21. FIG. 8 is an explanatory view of the movement and action of the collecting section 4b, and only one of the two collecting sections 4b (collecting tools 4a) is shown in a simplified manner. Actually, since there are two collecting parts 4b, the role burden of one collecting part 4b can be halved, and the fine ice M can be collected and discharged with a lighter load.

  By the way, before the inventors arrived at the present invention, various attempts were made using a discharge impeller mp having a radial blade portion mp2 employed in a pump P or the like as shown in FIGS. Unlike the liquid or liquid mixture containing a lot of liquid in the fine ice M, it was impossible to smoothly discharge the fine ice M. Similarly to the present invention, the refrigerator R and the auger 5 are operated, and the cylindrical aggregate G made of fine ice M shown in the right half of FIG. Thus, the fine ice M accumulates in the pocket (space) between the blade portions mp2 of the impeller. The lump that is formed by the accumulated fine ice M is broken and discharged intermittently. The discharge becomes unstable, and after a while, a phenomenon occurs in which the upper housing 2 is clogged without being discharged outside. The pocket surrounded by the shaft part mp1 and the blade part mp2 is filled with the fine ice M, and the rotational load of the auger 5 is increased. I fell into a state where I could not run continuously. It should be noted that, after the refrigerator R and the auger 5 are in operation, the fine ice M is squeezed out for a short period of time and can be directed to the discharge port 20, but the pressing force is added, and the hard and fine solidified Become ice M. The rotating force of the impeller does not contribute to the discharge of the fine ice M, and the force of the auger 5 that lifts the cylindrical aggregate G of fine ice presses the fine ice M and pushes it out from the discharge port 20. Yes. Since it is compressed, originally soft fine ice M has become a hard lump.

  The present inventors changed the way of thinking in order to solve these problems, and arrived at the present invention through extensive research. According to the present invention having the collecting means 4, the fine ice M is not compressed and becomes soft and fine fine ice M as in Patent Document 1, FIG. 11, FIG. Furthermore, the rotating collection part 4b scrapes and collects only the fine ice M at the upper end G1 out of the cylindrical aggregate G of the fine ice M that is moved upward by the auger 5 at the lower end part. Thus, since the rotational force of the collecting means 4 is used to discharge in the horizontal direction, almost no load is applied. It is a machine for producing fine ice that can be operated continuously.

  In the present embodiment, 2/3 or more of the dimensions in the height direction of the collecting tool 4a are arranged in the vertical height range of the discharge port 20 as shown in the figure. The fine ice M scraped off by the collector 4a and the inner wall 23 of the upper housing can be smoothly discharged to the discharge port 20. And the upper edge 45 of the collection tool 4a is set lower than the upper end 205 of the discharge port 20, and the lower edge 46 is set lower than the lower end 206 of the discharge port 20. If the upper edge 45 of the collector 4a is not set lower than the upper end 205 of the discharge port 20, a part of the fine ice M scraped by the collector 4a and the inner wall 23 of the upper housing will become the auger 5 and the collector. The rotation of 4a goes up the collection surface 43, reaches the upper edge of the collection tool 4a, and remains there, resulting in poor discharge efficiency of the fine ice M. If the lower edge 46 of the collector 4a is set lower than the lower end 206 of the discharge port 20, the cylindrical assembly G will block the lower portion of the discharge port 20, and the discharge that can discharge fine ice will be performed. This is because the substantial opening area of the outlet 20 is reduced and the discharge amount of the fine ice M is reduced.

Further, a projection 7 directed to the inside S of the upper housing as shown in FIGS. 2 and 3 is fixed to the upper plate portion 2b of the upper housing 2, and the lower end 76 of the projection 7 is located above the collecting tool 4a in a front view. It protrudes down to the vicinity of the edge 45. The distance between the lower end of the protrusion 7 and the upper edge of the collecting tool 4a is set to about 10 mm.
The fine ice M scraped off at the lower edge portion of the collecting portion 4b is held while moving upward in the enclosure of the collecting portion 4b and the upper housing inner wall 23 by the rotation of the collecting means 4. When the upper edge 45 of the tool 4a is higher than the discharge port 20 or when the tool 4a is operated for a long time, the fine ice M may go up the collecting tool 4a and adhere to the upper edge 45 in some cases. The fine ice M adhering to the upper edge 45 of the collecting tool 4a freezes, grows and grows, and there is a risk that the rotation of the auger 5 will be loaded and hindered. In order to prevent this, ice 7 such as fine ice M attached to the upper edge of the collecting tool 4 a by providing the protrusion 7 is removed by colliding with the protrusion 7 by the rotation of the collecting means 4. The collected frozen parts 4b that are removed and fallen and that are subsequently rotated and guided to the discharge port 20 are guided. The protrusion 7 is preferably provided in the upper housing cylinder S near the upper housing inner wall 23 in the center of the discharge port 20 in a plan view as viewed from above as shown in FIG. It is because an icing part is easy to generate | occur | produce in the upper area of the collection part 4b.
In the figure, reference numeral 18 denotes a refrigerant outlet nozzle, and reference numerals 160, 260 and 270 denote holes for flange coupling bolts and nuts.

(2) Method for Producing Fine Ice Next, a method for producing fine ice using the fine ice making machine will be described. A production machine including a generator A, a refrigerator R, and a salt water supply means K as shown in FIG. 1 is prepared. First, salt water SW is supplied into the cylinder 1. Foreign matter is removed from the salt water SW supplied from the pump P by the filter F, sterilized by the ultraviolet sterilizer UV, and then injected into the cylinder 1. The salt water SW controls the liquid level so as to be the liquid level SW1 covering the upper surface of the bearing 61 and the boss upper surface 622.

Subsequently, the refrigerator R in which the compressor MC, the condenser CN, the expansion valve V, and the refrigerant flow path 19 of the cylinder 1 are connected by the refrigerant RF pipe is operated, and the change in the state of expansion and compression is continuously repeated. The film-like ice IC is generated on the cylinder inner peripheral wall 13 by exerting the action. The temperature of the refrigerant RF is about −20 ° C. (summer) to −25 ° C. (winter) at the point of the refrigerant inlet nozzle 17 entering the cylinder 1.
The gear motor 8 is rotated in synchronism with the operation of the refrigerator R. As the refrigerator R continues to operate, the solid membranous ice IC generated and grown on the cylinder inner peripheral wall 13 is scraped one after another by the rotating auger 5 and is present in the cylindrical gap between the cylinder inner peripheral wall 13 and the auger 5. After a while, the cylindrical aggregate G made of fine ice M is formed in the cylindrical gap. Then, the cylindrical aggregate G of fine ice moves upward by the rotation of the auger 5. The cylindrical assembly G floats on the liquid level SW1, and further its upper end G1 approaches the collecting means 4.
The collecting means 4 is fixed to the rotating shaft of the auger 5, and then the auger 5 rotates so as to cross the lower edge 46 (specifically, the lower edge 412 of the arcuate portion 41) of the collecting tool 4a as shown in FIG. When the aggregate G is pushed up, the upper end G1 of the aggregate beyond the lower edge portion of the collector 4a is scraped off by the rotation of the collector 4a. The fine ice M at the upper end G1 scraped off is discharged at the point of the discharge port 20 as the collection tool 4a rotates.
After that, the scraping of the fine ice M by the collecting tool 4a and the operation of releasing the scraped fine ice M to the discharge port 20 are repeated, and the steady operation for continuously producing the fine ice M is started.

  The fine ice M on the upper end G1 scraped off is taken into a enclosure formed by the collecting portion 4b and the upper housing inner wall 23 facing the collecting portion 4b. The collection part 4b rotates and is an enclosure having a mouth open in a V shape in plan view in the direction of rotation. The fine ice M at the upper end G1 scraped off is like a thick arrow in FIG. Since the strong force works, the fine ice M scraped off does not spill out of the mouth. In addition, the cylindrical assembly G is continuously pushed up over the lower edge 412 of the collecting unit 4b by the continuous operation of the refrigerator R and the auger 5, and the cylindrical assembly is collected at the lower edge 412 of the collecting unit 4b. Since the collecting part 4b rotates while scraping the upper end part G1 of G sequentially, the fine ice M of the upper end part G1 scraped off is subjected to the pushing-up force of the auger 5, and the collecting surface of the collecting part 4b 43 is moved upward. Therefore, a receiving space for the fine ice M continuously taken into the enclosure is created, and the fine ice M obtained by sequentially scraping the upper end portion G1 of the cylindrical aggregate G is collected at the portion of the collection portion 4b and the inner wall 23 of the upper housing. It can be smoothly taken in and held in the enclosure. Here, the auxiliary arcuate portion 42a of the annular body 42 is shaped to expand the collection surface 43 of the collection portion 4b upward, and contributes to increasing the amount of fine ice M retained.

After that, the collecting tool 4a is rotating, and when the upper housing inner wall 23 facing the collecting tool 4a advances to the point of the discharge port 20, the fine ice M has been taken into the enclosure and surrounded the outside. Since the inner wall 23 of the housing is not pressed, the fine ice M is discharged from the discharge port 20 to the outside. At this time, centrifugal force due to the rotation of the collecting tool 4a is applied, and the fine ice M taken in the enclosure is smoothly discharged to the discharge port 20 as shown in FIG. If the outlet pipe 21 extending from the outlet 20 shown in FIG. 6 is inclined downward, the fine ice M that is soft and has a particle size of about 20 to 30 μm can be taken out by natural fall.
The upper end G1 of the cylindrical aggregate G formed by the fine ice M continuously rising from the cylinder 1 to the upper housing 2 is scraped at the lower edge portion of the collector 4a every rotation of the collector 4a. The fine ice M at the upper end G1 is scraped and rotated with the upper housing inner wall 23 facing the collecting surface 43 of the collecting tool 4a, and then the fine ice M scraped is discharged when reaching the discharge port 20. The fine ice M is scraped and released repeatedly, and powdered snow or sherbet-shaped fine ice M is continuously produced.

(3) Effect In the fine ice making machine configured as described above, the ice IC generated on the cylinder inner wall 13 is scraped by the auger 5 to become fine ice M, moves upward, and rises in the upper housing 2. However, since the collection part 4b is provided so that the space | interval W of the collection surface 43 and the upper housing inner wall 23 which opposes this may spread gradually in planar view toward the rotation direction from the front-end | tip part 411, it is efficient. The fine ice M can be collected. Since the gap W between the collecting surface 43 and the upper inner wall 23 facing the collecting surface 43 is gradually increased, the pockets seen in the impellers of FIGS. 12 and 13 are not formed, and the fine ice M is formed in the upper housing. It is stagnant and does not accumulate. In particular, when the collecting portion 4b having the arc-shaped portion 41 that uniformly swells toward the opposed inner wall 23 of the upper housing as shown in FIGS. 7 to 9, there is no pocket for collecting the collected fine ice M. Very good.

The fine ice M scraped off by the auger 5 moves upward as a cylindrical aggregate G of fine ice, but the collecting portion 4b having a collecting surface 43 having a predetermined length in the height direction is provided in the auger 5. It rotates horizontally as shown in FIG. 8 in accordance with the rotation of the rotating shaft. Therefore, only the upper end portion G1 of the cylindrical assembly G rising above the lower edge 412 of the collection portion 4b is scraped to collect the fine ice M, and the fine ice is collected. The load applied to the gear motor 8 when M is collected is small. Stabilize continuous operation.
When the two collecting tools 4a and the collecting part 4b are provided in the collecting means 4 as in the embodiment, when the rising speed of the cylindrical aggregate G of fine ice is the same, one rotation of the collecting means 4 Thus, the amount of scraping the fine ice M by one collecting tool 4a is reduced to ½, and the load is hardly applied.
Further, the upper end G1 of the cylindrical aggregate G where only the fine ice M rising over the lower edge 412 of the collecting portion 4b has gathered is connected to the collecting portion 4b and the inner wall of the upper housing facing the collecting portion 4b. Since it is collected and held at 23, soft fine ice M that has been scraped by or close to the auger 5 is obtained.

And since the collection part 4b is arrange | positioned in the height area | region of the discharge port 20 provided in the upper housing 2, the fine ice M collected and hold | maintained by the collection part 4b and the upper housing inner wall 23 is collected. If the part 4b rotates and enters the part of the discharge port 20, it can be smoothly discharged to the discharge port 20 with the help of the rotational force of the collection part 4b. Unlike the structure in which the fine ice M is pressed by the force of the auger 5 and pushed out from the discharge port 20 as shown in Patent Document 1, FIG. 12 and FIG. In response to the movement of the cylindrical aggregate G of fine ice, the rotational movement of the collecting portion 4b integrated with the auger 5 is used to change the direction of the fine ice M in the horizontal direction and discharge it to the discharge port 20 extremely. It is an epoch-making invention.
The upper end portion G1 of the cylindrical assembly G is scraped off at the lower edge portion of the rotating collecting portion 4b, and the fine ice M at the upper end portion G1 scraped off by the collecting portion 4b that rotates in accordance with the rotation of the auger 5. The fine ice M is discharged to the outlet 20 and the outlet pipe 21 by applying a centrifugal force in the horizontal direction. Since the external force which compresses the fine ice M is not applied in discharge | release, it does not become the fine ice M of patent document 1 and FIG.

  In this way, soft fine ice M made by the auger 5 or good fine ice M having a particle size of about 20 to 30 μm is obtained. In addition to this, when this manufacturing machine is used, the fine ice M does not stay in the generator A for a long time, and the rotating collection unit 4b repeatedly scrapes and discharges the fine ice M repeatedly. Even if the ice making amount of the fine ice M changes due to changes in external factors such as the temperature and water temperature, problems such as freezing and clogging inside the ice making unit do not occur. The water temperature of the supply salt water SW can correspond in the range of 5 to 25 degreeC, for example. Even if there is no particular problem when the proportion of fine ice M contained in the salt water is low, when taking out fine fine ice with a high proportion of fine ice M from the discharge port 20, it is easy to press and harden with a conventional ice making machine, There is a risk of shutdown. However, the present invention does not cause such a shutdown.

  Further, when the collecting portion 4b is formed in the arc-shaped portion 41 in plan view, the collecting surface 43 can be made uniform and smooth, so that the fine ice M is collected by the collecting means 4 and the fine ice at the discharge port 20 is collected. The release of M proceeds smoothly. An annular body 42 in which an auxiliary arcuate part 42a having the same shape in plan view extends above the arcuate part 41 in the collecting means 4 and the auxiliary arcuate part 42a is a part of a circle or an ellipse in plan view. If the collector 4a integrated with the arc-shaped portion 41 is provided, the mechanical strength increases, so that even the arc-shaped portion 41 is robust. Since the collector 4a can be easily manufactured by cutting the cylindrical body, it is easy to manufacture and the cost can be reduced.

  Further, when the bearing 61 that pivotally supports the upper shaft 52 of the auger 5 is provided in the upper housing S below the discharge port 20, the liquid level SW1 of the salt water SW is maintained at a position higher than the bearing 61. By doing so, the frictional heat generated in the bearing 61 by the rotation of the auger 5 can be autonomously removed by the salt water SW. A boss 62 that holds the bearing 61 is fixed to the upper housing 2 by connecting the outer peripheral surface 621 and the inner wall 23 of the upper housing with a plurality of standing pieces 63, and further projects upward from the bearing 61. If the collection means 4 is attached and fixed to the upper end G1 of 52, a separate drive source for rotation of the collection means 4 is not required. In addition, by providing the standing piece 63, a cylindrical gap necessary for raising the fine ice M between the boss 62 and the cylinder inner wall 13 is secured while the bearing 61 is held by the boss 62, etc. It is a reasonable fine ice making machine.

More specifically, when the protrusion 7 toward the upper housing S is fixed to the upper plate portion 2b, and the lower end 76 of the protrusion 7 protrudes down to the vicinity of the upper edge 45 of the collector 4a in front view, the collector The frozen matter such as fine ice M that has risen on the upper edge of 4a collides and falls with the rotation of the collecting tool 4a, so that it can be easily removed. Early measures can be taken so that the operation does not stop due to the growth of the frozen matter.
In addition, by setting the upper edge 45 of the collecting tool 4a lower than the upper end 205 of the discharge port 20, the fine ice M rising on the upper edge of the collecting tool 4a is reduced, and the production stability of the fine ice M is reduced. To increase. Moreover, by setting the lower edge of the collecting tool 4a lower than the lower end 206 of the discharge port 20, the discharge port 20 can be fully utilized, and productivity can be increased.
As described above, the machine for producing fine ice exhibits extremely excellent effects as described above and is extremely useful.

  The present invention is not limited to those shown in the above-described embodiment, and various modifications can be made within the scope of the present invention depending on the purpose and application. The shape, size, number, material, material, etc. of generator A, cylinder 1, upper housing 2, collecting means 4, auger 5, bearing 61, boss 62, upright piece 63, projection 7 etc. are selected appropriately according to the application. it can. For example, in the embodiment, the two collecting tools 4a are provided in the collecting means 4, but the collecting means 4 may be provided with one or three or more plural collecting tools 4a.

1 cylinder 12 outer peripheral part 13 inner wall (inner peripheral wall)
2 Upper housing 23 Upper housing inner wall 4 Collection means 4a Collection tool 4b Collection part 41 Arc-shaped part 411 Tip part 42 Annular body 42a Auxiliary arc-shaped part 43 Collection surface 5 Auger 52 Upper shaft 61 Bearing 62 Boss 63 Standing piece 7 Protrusion G Assembly (tubular assembly)
G1 top edge IC ice M fine ice

In order to achieve the above object, the gist of the invention described in claim 1 is that a cylindrical upper housing (2) is fixed to a cylindrical cylinder (1), and is disposed upright. The outer periphery (12) was cooled, and the ice (IC) generated on the cylinder inner wall (13) was scraped with an auger (5) to make fine ice (M) and moved upward, and provided in the upper housing (2). A fine ice making machine for discharging the fine ice (M) from the discharge port (20), which rotates in accordance with the rotation of the rotating shaft of the auger (5) and is close to the inner wall (23) of the upper housing From the front end portion (411) toward the rotation direction, in a plan view, the collection portion (4b) gradually increases the distance (W) between the collection surface (43) and the upper inner wall (23) facing the collection surface (43). The collecting part (4b) is provided so as to spread, and the collecting part (4b) includes fine ice collecting means (4) disposed in a height region of the discharge port (20), and the collecting part ( 4b) is formed into an arcuate part (41) in plan view, and In addition to the arcuate part (41), an auxiliary arcuate part (42a) having the same shape in plan view extends above the collecting means (4), and the auxiliary arcuate part (42a) is seen in plan view. A collecting tool (4a) provided with an annular body (42) that is a part of a circle or an ellipse is provided, and the aggregate (G) formed by the fine ice (M) that moves up by the rotation of the auger (5) is provided . The upper end portion (G1) is scraped off by the rotating collection portion (4b), collected by the inner wall (23) of the upper housing, and collected along with the rotation of the collection portion (4b). The fine ice production machine is characterized in that the fine ice (M) is discharged at the point of the discharge port (20).
According to a second aspect of the present invention, there is provided the fine ice making machine according to the first aspect , wherein the bearing (61) that supports the upper shaft (52) of the auger (5) is located below the discharge port (20). A boss (62) provided in the upper housing (S) and holding the bearing (61) connects the outer peripheral surface (621) and the upper housing inner wall (23) with a plurality of standing pieces (63). The collection means (4) is attached to the upper end of the upper shaft (52) that is fixed to the upper housing (2) and protrudes upward from the bearing (61) in the upper housing (S). It is fixed. According to a third aspect of the invention, there is provided a fine ice making machine according to the first or second aspect , wherein a protrusion (7) toward the inside of the upper housing (S) is fixed to the upper plate portion (2b) of the upper housing (2), The lower end (76) of the protrusion (7) is projected downward to the vicinity of the upper edge (45) of the collecting tool (4a) in a front view. Invention serving fine ice making machine according to claim 4, in claims 1 to 3, the upper edge (45) of the capturing device (4a) is set lower than the upper end (205) of the outlet (20), The lower edge (46) of the collecting tool (4a) is set lower than the lower end (206) of the discharge port (20).

The present inventors changed the way of thinking in order to solve these problems, and arrived at the present invention through extensive research. According to the present invention having the collecting means 4, the fine ice M is not compressed and becomes soft and fine fine ice M as in Patent Document 1, FIG. 12, FIG . Furthermore, the rotating collection part 4b scrapes and collects only the fine ice M at the upper end G1 out of the cylindrical aggregate G of the fine ice M that is moved upward by the auger 5 at the lower end part. Thus, since the rotational force of the collecting means 4 is used to discharge in the horizontal direction, almost no load is applied. It is a machine for producing fine ice that can be operated continuously.

Claims (6)

A cylinder-shaped cylinder (1) with a covered cylindrical upper housing (2) is fixedly installed, and the outer periphery (12) of the cylinder (1) is cooled to produce ice formed on the cylinder inner wall (13). (IC) is scraped with an auger (5) to make fine ice (M) and moved upward, and the fine ice (M) is discharged from the discharge port (20) provided in the upper housing (2). A manufacturing machine,
The collecting portion (4b) is rotated in accordance with the rotation of the rotation shaft of the auger (5) and is viewed from above in a plan view from the tip portion (411) close to the inner wall (23) of the upper housing. The collecting surface (43) and the upper housing inner wall (23) opposed to the upper housing inner wall (23) are provided so as to gradually widen the gap (W), and the collecting portion (4b) is provided at the height of the discharge port (20). Comprising fine ice collecting means (4) arranged in the area,
The upper collecting inner part (G1) of the aggregate (G) formed by the fine ice (M) that moves up by the rotation of the auger (5) is scraped off by the rotating collecting part (4b), and the inner wall of the upper housing (23), and with the rotation of the collection part (4b), the collected fine ice (M) is discharged at the point of the discharge port (20). A fine ice making machine. The machine for producing fine ice according to claim 1, wherein the collecting part (4b) is formed in an arcuate part (41) in plan view. In addition to the arcuate part (41), the collecting means (4) has an auxiliary arcuate part (42a) having the same shape in plan view extending above it, and the auxiliary arcuate part (42a) is circular in plan view. 3. The machine for producing fine ice according to claim 2, further comprising a collecting tool (4a) provided with an annular body (42) that is part of an ellipse. A bearing (61) pivotally supporting the upper shaft (52) of the auger (5) is provided in the upper housing (S) below the discharge port (20), and the bearing (61) The holding boss (62) is fixed to the upper housing (2) by connecting the outer peripheral surface (621) and the inner wall (23) of the upper housing with a plurality of standing pieces (63), and further in the upper housing (S). 4. The fine means according to any one of claims 1 to 3, wherein the collecting means (4) is attached and fixed to an upper end portion of the upper shaft (52) protruding upward from the bearing (61). Ice making machine. A projection (7) directed to the inside of the upper housing (S) is fixed to the upper plate portion (2b) of the upper housing (2), and the lower end (76) of the projection (7) is the collector in the front view. The machine for producing fine ice according to claim 3 or 4, wherein the machine projects downward to near the upper edge (45) of (4a). The upper edge (45) of the collector (4a) is set lower than the upper end (205) of the outlet (20), and the lower edge (46) of the collector (4a) is set to the outlet ( The machine for producing fine ice according to any one of claims 3 to 5, which is set lower than the lower end (206) of 20).

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