JP3112438B2 - Stir-mixing device in frozen dessert making machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an ice cream.
The present invention relates to a stirring and mixing device provided in a cooling cylinder of a refrigerator, a sorbet and other confectionery producing devices.

[0002]

2. Description of the Related Art As an ice cream dasher disclosed by the present applicant, Japanese Utility Model Publication No. 57-53177 is known. This is, as shown in FIG. 6, a cylinder-a for circulating the refrigerant liquid in an annular space c partitioned by an inner cylinder b of the cylinder-a, and a rotor d with pins in the inner cylinder b. An agitation cooling area A composed of a basket f with a scraper e surrounding the outside thereof, and a cooling main area B composed of a cylindrical body g.

[0003] With this apparatus, the ice cream raw material is first cooled in the stirring and cooling zone A to form an overrun composition. In the cooling main zone B in the latter half, the friction heat received by the dasher formed by the scraper e, the stirring pin h and the basket f and the heat generated by the stirring are taken away, so that the product is cooled more than before. A temperature lower by 2 ° C. to −3 ° C. is obtained.

However, since the rotor d with pins and the basket f rotate integrally, there is no relative rotation between them. For this reason, the effect of stirring by the stirring pin h attached to the rotor d with pins was insufficient.

Japanese Patent Application Laid-Open No. Hei 7-115910 discloses that
As shown in FIG. 7, a supply port i for a frozen dessert material is provided at one end in the axial direction.
In a frozen confectionery manufacturing apparatus provided with a stirring device m inside a cylindrical cooling cylinder k having a desiccant outlet j at the other end, a scraper slidably in contact with the plurality of stirring members n and the inner peripheral surface of the cylinder. and o are provided in the cooling cylinder k so as to rotate about a central axis p arranged in the center of the cylinder by a driving means as appropriate, and each stirring member n is provided with the central axis p and the cylinder. It is provided so as to rotate between the inner peripheral surface of k.

Since the stirring member n revolves while rotating by the planetary gear drive mechanism, a stirring effect can be obtained. However, gear mechanisms q and r are required for this, and sanitary properties such as mixing of wear powder of the drive gear system are required. There's a problem.

[0007]

In view of the above-mentioned problems of the prior art, (1) when producing ice cream sorbets,
A stable air mixing can be achieved even with a small amount of a stabilizer or the like, and a soft cream can be produced even when the product outlet temperature is lowered. (2) By providing a strong stirring section and a scraping and cooling section in the same cylinder, it is possible to produce frozen desserts with fine texture, low temperature and good shape retention. An object of the present invention is to provide a stirring and mixing device that enables the above points.

[0008]

(1) An outer cylinder 1 having a refrigerant inlet 8 and a refrigerant outlet 9 and a rear header 4 fixed inside the outer cylinder 1 and having one end provided with a raw material supply port 5, A cooling cylinder 2 whose end is sealed by a front header 3 having an ice cream outlet 7;
A basket-shaped rotary dasher 6 rotated by
A fixed cylindrical shaft 10 provided at the center of the basket-shaped rotary dasher 6 and having one end fixed to the front header 3 and the other end inserted and supported by a projecting shaft 16A provided on the drive shaft 16; The basket-shaped rotary dasher 6 has a scraper for scraping the inner surface of the cooling cylinder 2 which is swingably mounted on a scraper mounting member 12 provided on the outer periphery thereof toward the inner wall of the cooling cylinder 2. On the outer periphery of the basket-shaped rotary dasher 6, between the adjacent scraper mountings 12, there are internal stirring blade mountings 14; Has a plate-shaped comb-shaped internal stirring blade 15 that is attached through the opening of the basket-shaped rotary dasher 6 obliquely inward in a direction opposite to the rotation direction of the basket-shaped rotary dasher 6. Is provided on the outer peripheral surface thereof and intersects with the plate-shaped comb-shaped internal stirring blade 15 A plurality of fixed vanes 11 which fit fixedly provided on the circumference. (2) In the configuration of the above (1), the internal stirring blade 15 is made detachable from the internal stirring blade attachment 14 provided on the outer peripheral surface of the basket-shaped rotary dasher 6. (3) In the configuration of the above (1), the internal stirring blade 15 has two types of a plate-shaped stirring blade 15a and a rod-shaped stirring blade 15b,
The internal stirring blade attachment 14 can be replaced. (4) An outer cylinder 1 having a refrigerant inlet 8 and a refrigerant outlet 9 and a rear header 4 fixed inside the outer cylinder 1 and having a raw material supply port 5 at one end and an ice cream outlet 7 at the other end. A cooling cylinder 2 sealed with the front header 3 provided therein; a cage-shaped rotary dasher 6 which is provided in the cooling cylinder 2 and driven by a drive shaft 16 so as to be rotatable; A fixed cylindrical shaft 10 provided at the center of the dasher 6 and having one end fixed to the front header 3 and the other end inserted and supported by a protruding shaft 16A provided on the drive shaft 16; The type rotary dasher 6 has a scraper 13 which is slidably attached to a scraper mount 12 provided on the outer periphery of the rotary dasher 6 toward the inner wall of the cooling cylinder 2 and scrapes the inner surface of the cooling cylinder 2. On the outer periphery of the basket-shaped rotary dasher 6 It has internal stirring blade attachments 14 provided between the creper attachments 12, and these internal stirring blade attachments 14 pass through the openings of the cage-shaped rotary dashers 6 and rotate in the rotation direction of the cage-shaped rotary dashers 6. It has a plate-shaped comb-shaped internal stirring blade 15 mounted obliquely inward in the opposite direction, and is provided on the outer peripheral surface of one half of the fixed cylindrical shaft 10 on the side of the raw material supply port 5, wherein the plate-shaped comb-shaped blade is provided. A plurality of fixed blades 11 intersecting with the internal stirring blades 15 are fixed on the circumference, and a half of the fixed cylindrical shaft 10 on the ice cream outlet 7 side is a basket-shaped roller.
A large-diameter eccentric cylindrical portion 10 'which is eccentric with respect to the tally dasher 6 and does not have the fixed blade 11 and the internal stirring blade 15 intersecting with the fixed blade 11.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a stirring and mixing device will be described with reference to FIGS. 1 is a longitudinal sectional view of the stirring and mixing device, FIG. 2 is a sectional view taken along line AA of FIG. 1, and FIG. 3 shows an internal stirring blade.

In FIG. 1, reference numeral 1 denotes an outer cylinder, and 2 denotes a cooling cylinder fixed in the outer cylinder 1. Both ends of the cooling cylinder 2 are sealed by a front header 3 and a rear header 4. The rear header 4 is provided with an ice cream raw material supply port 5. The raw material supplied from the rear header 4 is stirred by a basket-shaped rotary dasher 6 shown below, and the ice cream provided on the front header 3 side.
From the system outlet 7.

The outer cylinder 1 is provided with a refrigerant inlet 8 such as NH ₃ or R22, and a refrigerant outlet 9 on the opposite side. A rotating basket-shaped rotary dasher 6 is provided in the cooling cylinder 2.
However, a fixed cylindrical shaft 10 is provided at the center thereof.

One end of the fixed cylindrical shaft 10 is fixed to the front header 3, and the other end is a protruding shaft 16 provided on the inner end of the drive shaft 16.
A is rotatably fitted to A. A comb-shaped fixed blade 11 is attached to the cylindrical pipe portion 10A of the fixed cylindrical shaft. The fixed blade 11 is made of a flat plate, and has a cylindrical pipe portion 10.
A is equally arranged on the circumference as shown in FIG. 2 when viewed from its end, and is fixed at a fixed angle, for example, a tangential direction.

A scraper attachment 12 is attached to the cage type rotary dasher 6 by welding or the like.
3 is swingably mounted. The scraper 13 is provided for scraping the inner peripheral wall of the cooling cylinder 2. On the outer peripheral portion of the basket-shaped rotary dasher 6, an internal stirring blade mounting device 14 is also attached at regular intervals on the circumference.
A removable comb-shaped internal stirring blade 15 is attached to this, and intersects with the comb-shaped fixed blade 11. As the internal stirring blade 15, two types shown in FIGS. 3A and 3B are selectively used depending on the application. That is, FIG. 3 (a) shows a plate-like internal stirring blade 15a capable of strong stirring, which is suitable for a sorbet or a die ladder. On the other hand, FIG. 3B shows a rod-shaped internal stirring blade 15b of a type capable of soft and uniform stirring, which is suitable for high-fat ice or the like.

The ice crystals scraped off by the scraper 13 are guided to the center by the internal stirring blades 15 and intersect with the comb-shaped fixed blades 11 fixed to the fixed cylindrical shaft 10 and are sheared by this. Under the action, it is strongly stirred and mixed. Further, since the fixed blade 11 fixed to the fixed cylindrical shaft 10 is provided tangentially to the cylindrical pipe portion 10A, the liquid in the central portion is subjected to the outward diffusion action.

FIGS. 4 and 5 show another embodiment of the present invention. This is provided with a large-diameter eccentric cylindrical portion 10 'at the ice cream outlet half of the fixed cylindrical shaft 10;
It is suitable when it is desired to produce an ice cream having a fine texture and being hard and having shape retention. In this case, at the same time, the internal stirring blades 15 on the side of the ice cream outlet 7 are removed, and the raw material is strongly stirred on the half of the raw material supply port 5 side.
In addition, the residence time in this area is increased, and a fine-grained ice cream is first made. Next, in the ice cream outlet side half part, that is, in the part of the large-diameter eccentric cylindrical part 10 'having a slightly eccentric δ (FIG. 5), the residence time is shortened, and the ice is rapidly frozen, so that a hard ice cream having good shape retention properties is obtained. -Can produce the game.

[0016]

(1) An internal stirring blade is detachably mounted on a basket-shaped dasher, and a comb-shaped fixed blade is mounted on a fixed cylindrical shaft at the center, and these are relatively rotated while intersecting each other. So,
The ice cream can be strongly stirred and mixed. (2) Two types of internal stirring blades, a flat plate type and a round bar type, were prepared and made replaceable. And in the case of round bar type,
Since the shearing effect of the mutual blades is weakened, a high-fat ice cream that easily causes churning can be produced. (3) Further, by making the exit side half of the fixed cylindrical shaft a large-diameter eccentric cylindrical portion, it is possible to produce a fine and hard ice cream having good shape retention.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a first example of a stirring device of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 shows two examples of the internal stirring blade of FIG.

FIG. 4 is a sectional view of a second example of the stirring device of the present invention.

FIG. 5 is a sectional view taken along line BB of FIG. 4;

FIG. 6 shows a first example of a known stirring device.

FIG. 7 shows a second example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Outer cylinder 2 Cooling cylinder 3 Front header 4 Rear header 5 Raw material supply port (for ice cream) 6 Basket type rotary dasher 7 Ice cream outlet 8 Refrigerant inlet 9 Refrigerant outlet 10 Fixed cylindrical shaft 10 'Large diameter Eccentric cylindrical part 11 Comb-shaped fixed blade 12 Scraper mounting device 13 Scraper 14 Internal stirring blade mounting device 15 Comb-shaped internal stirring blade 15a Plate-type stirring blade 15b Bar-type stirring blade 16 Drive shaft 16A Projection shaft

Claims (4)

(57) [Claims] An outer cylinder (1) having a refrigerant inlet (8) and a refrigerant outlet (9), and a rear header (1) fixed inside the outer cylinder (1) and having one end provided with a raw material supply port (5). 4) Cooling cylinders, the other ends of which are sealed by a front header (3) with an ice cream outlet (7)
(2) a basket-shaped rotary dasher (6) in the cooling cylinder (2), which is rotated by the drive shaft (16); and provided at the center of the basket-shaped rotary dasher (6). A fixed cylindrical shaft (1) having one end fixed to the front header (3) and the other end inserted and supported by a projecting shaft (16A) provided on the drive shaft (16).
0), and the basket-shaped rotary dasher (6) is swingably mounted on a scraper mounting (12) provided on the outer periphery thereof toward the inner wall of the cooling cylinder (2). It has a scraper (13) for scraping the inner surface of the cooling cylinder (2), and further on the outer periphery of the basket type rotary dasher (6),
An internal stirring blade attachment (14) is provided between adjacent scraper attachments (12), and these internal stirring blade attachments (14) pass through the opening of the cage-shaped rotary dasher (6) and have a cage shape. It has a plate-shaped comb-shaped internal stirring blade (15) attached obliquely inward in a direction opposite to the rotation direction of the rotary dasher (6), and the fixed cylindrical shaft (10) is provided on an outer peripheral surface thereof, A stirring and mixing device in a frozen dessert manufacturing machine, wherein a plurality of fixed blades (11) intersecting with a plate-like comb-shaped internal stirring blade (15) are fixed on a circumference. 2. An apparatus according to claim 1, wherein the internal stirring blade is detachable from an internal stirring blade mounting member provided on an outer peripheral surface of the basket-shaped rotary dasher. Stirring and mixing equipment. 3. The plate-like stirring blade (15) has an internal stirring blade (15).
3. The stirring and mixing device in a frozen dessert maker according to claim 2, wherein the stirring and mixing device has two types, a) and a rod-shaped stirring blade (15b), and is replaceable with respect to the internal stirring blade attachment (14). 4. An outer cylinder (1) having a refrigerant inlet (8) and a refrigerant outlet (9), fixed inside the outer cylinder (1), and having one end connected to a raw material supply port.
A cooling cylinder (2) sealed with a rear header (4) equipped with (5) and a front header (3) equipped with an ice cream outlet (7) at the other end, and inside the cooling cylinder (2). A cage-type rotary dasher (6), which is driven by a drive shaft (16) and is rotatably provided; a cage-type rotary dasher (6) provided at the center of the cage-type rotary dasher (6); The fixed cylindrical shaft (1) is fixed to the header (3) and the other end is inserted and supported by a protruding shaft (16A) provided on the drive shaft (16).
0), and the basket-shaped rotary dasher (6) is swingably mounted on a scraper mounting (12) provided on the outer periphery thereof toward the inner wall of the cooling cylinder (2). It has a scraper (13) for scraping the inner surface of the cooling cylinder (2), and is provided between the adjacent scraper attachments (12) on the outer periphery of the basket-shaped rotary dasher (6). Internal agitating blade attachments (14), which penetrate through the opening of the cage-shaped rotary dasher (6), and rotate with the rotation direction of the cage-shaped rotary dasher (6). It has a plate-shaped comb-shaped internal stirring blade (15) attached obliquely inward in the opposite direction, and one half of the fixed cylindrical shaft (10) on the raw material supply port (5) side,
The plate-like comb-shaped internal stirring blade (1
A plurality of fixed blades (11) intersecting with (5) are fixed on the circumference, and an ice cream outlet of the fixed cylindrical shaft (10).
The (7) side half is eccentric with respect to the basket-shaped rotary dasher (6), and has a large-diameter eccentric cylindrical portion (11) having no fixed blade (11) and internal stirring blade (15) intersecting therewith. 10 ′) A stirring and mixing device in a frozen dessert production machine, characterized in that: