JP3699279B2 - Stirrer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a stirring device that efficiently and uniformly stirs a material to be stirred such as a food material having a very high viscosity.
[0002]
[Prior art]
Japanese Utility Model Laid-Open No. 62-43628 discloses a stirrer in which an inclined shaft member is disposed in a stirring vessel having a spherical bottom and a single annular stirring member is rotatably disposed on the shaft member. It is disclosed. In this stirring device, a cutter shaft for pulverizing the material to be stirred perpendicularly to the substantially center of the stirring vessel is arranged.
In JP-A-1-168323, an inner and outer double agitating blades are provided on a shaft member that rotates with the same horizontal axis in a stirring chamber for storing a stirring material, and the outer blades are connected to the outer periphery of the stirring chamber. A stirrer configured to rotate in the direction and rotate in the other direction so as not to interfere with the outer blade in the central portion of the stirring chamber is disclosed.
In Japanese Patent Application Laid-Open No. 9-308574, an oblique axis stirrer in which an oblique axis driven by an electric motor is obliquely inserted from above the cylindrical container into a cylindrical container having a hemispherical bottom, is provided at the lower end of the oblique axis. An annular stirrer frame is fixed, and the diameter of this frame is made to coincide with the extension line of the shaft center on the oblique axis. A stirrer is disclosed in which stirring rods made of a plurality of round pipes, flat steel plates and the like intersecting with the extension line are installed in a stirring frame with a mutual interval.
[0003]
[Problems to be solved by the invention]
In the stirring apparatus disclosed in Japanese Utility Model Laid-Open No. 62-43628, an inclined shaft member is disposed, and a cutter shaft for pulverizing the material to be stirred is disposed substantially at the center of the stirring container. However, the region that is cut and stirred by the cutter shaft is limited, and when the material to be stirred has a high viscosity and binding force, there is a risk that a so-called companion where the material to be stirred adheres to the shaft member may occur. high.
In the stirrer disclosed in Japanese Patent Application Laid-Open No. 1-168323, when the material to be stirred has a high viscosity and binding force, the material to be stirred adheres to the periphery of the horizontal rotating shaft, and there is a high possibility that the rotation will occur. .
[0004]
In the stirrer disclosed in Japanese Patent Application Laid-Open No. 9-308574, an oblique shaft driven by an electric motor is inserted obliquely from above the cylindrical container, and an annular stirrer frame is fixed to the lower end of the oblique shaft. A stirrer frame is constructed with a plurality of round pipes, flat steel plates, and other stirrer bars that intersect the extension of the axis of the shaft. Has been resolved. However, there is no configuration that wipes off the adhering matter on the annular stirrer frame, and there is a problem that the stirrer material adheres to the stirrer frame when the stirrer material has a high viscosity and binding force. Surviving.
[0005]
OBJECT OF THE INVENTION
The present invention has been made in view of the above-described problems of the conventional stirring device, and the stirring target material does not adhere to the stirring blade and is not supplied, and the stirring blade has high destruction efficiency and stirring efficiency. An object of the present invention is to provide a stirrer capable of producing a highly uniformly stirred product at a high rate.
Another object of the present invention is to provide an agitation cooking apparatus capable of efficiently agitating a material to be agitated and performing cooking such as heating uniformly and efficiently.
[0006]
[Means for solving the problems]
A first aspect of the present invention is a stirrer in which a stirrer is rotationally driven around an inclined axis in a stirrer vessel having a spherical bottom, and the stirrer is driven to rotate about the same axis. An inner stirring member having an annular shape and an outer stirring member having an annular shape, and the inner stirring member is asymmetric about a rotation axis, and the inner stirring member and the outer stirring member are driven to rotate in directions opposite to each other. It is the stirring apparatus characterized.
According to a second aspect of the present invention, in the stirring device in which the stirring member is disposed in a stirring vessel having a spherical bottom so that the stirring member can be driven to rotate about an inclined axis, the stirring member is driven to rotate about the same axis. The inner stirring member includes an annular inner stirring member and an annular outer stirring member. The inner stirring member is asymmetric about a rotation axis, and the inner stirring member and the outer stirring member are driven to rotate at different rotational speeds in the same direction. This is a stirring device.
[0007]
Embodiments of the present invention are as follows. The inner stirring member has stirring protrusions on at least one of the inner side and the outer side of the annular portion. The outer stirring member has a scraping member in contact with the stirring container. The stirring vessel has a heating function.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. As shown in FIG. 1, the stirrer of the first embodiment includes a hemispherical hook 12 supported by a gantry 10 and a rotary shaft whose rotational axis A is inclined at 25 to 40 °, preferably 30 ° with respect to the vertical line. 14, an inner stirring blade 16 and an outer stirring blade 18 are arranged. The kettle 12 may have a jacket structure so that steam, high-temperature water, cold water, and the like are supplied around the outer surface as desired, and the stirring device may have a cooking function.
[0009]
The upper end of the hook 12 is closed openably by a lid member 20, and a stirring material charging port 22 and a rotating shaft 14 are attached to the lid member 20. At the upper end of the rotating shaft 14, a motor 30 with a reverse speed change function as a driving source of the stirring blade is attached, and therefore the inner stirring blade 16 and the outer stirring blade 18 are driven to rotate in the same direction or in the opposite direction. The rotational speed can be arbitrarily selected and controlled. The rotation speed of the inner stirring blade 16 is in the range of 30 to 150 rpm, and the rotation speed of the outer stirring blade 18 is in the range of 20 to 50 rpm. The lower end portions of the inner stirring blade 16 and the outer stirring blade 18 are supported by the shaft support member 32 so as to be rotatable about the rotation axis A.
[0010]
The inner stirring blade 16 has stirring shafts 36 and 37 supported by arms 34 and 35 so that the distance from the rotation axis A is different, and the stirring shafts 36 and 37 are disposed not symmetrically with respect to the rotation axis A. A plurality of stirring rods 40 are attached. The stirring bar 40 extends in a direction orthogonal to the rotation axis A, and at least some of the stirring bars 40 have a length extending to the vicinity of the outer stirring blade 18. The cross section of the plane including the rotation axis A of the inner stirring blade 16 is not limited to the rectangle described above, and may be a deformed rectangle.
[0011]
The outer stirring blade 18 is annular, and a synthetic resin scraping blade 50 that touches the inner surface of the pot 12 and scrapes the material to be stirred is attached around the outer stirring blade 18. The scraping blades 50 are arranged asymmetrically with respect to the rotation axis A so that the scraping blades 50 on both sides of the rotation axis A do not scrape the same region of the shuttle 12. The cross section of the plane including the rotation axis A of the outer stirring blade 18 is not limited to the circle described above, and may be an ellipse or a rectangle. Further, the outer stirring blade 18 may be provided with a stirring bar that can extend to the vicinity of the inner stirring blade 16. A temperature sensor 72 is attached to the inner stirring blade 16 via a temperature sensor attachment member 70 provided at a position near the rotational axis A and slightly below the rotational axis A at a position corresponding to the lower portion of the hook 12. Measure the temperature of the material to be stirred.
[0012]
[Experimental example]
Flour roux obtained by cooking oil and fat and wheat flour greatly differs in physical properties depending on the change in product temperature during cooking, that is, stirring. Therefore, as shown below, stirring was performed by sequentially changing the rotation speed and direction of the stirring blades.
(1) First half of heating step The material to be stirred consisting of fat and wheat flour is soft and fluid at low temperatures. The inner stirring blade 16 and the outer stirring blade 18 were rotated at 30 rpm in the same rotation direction. The material to be stirred in the kettle 12 was fluid and could be efficiently flowed to quickly raise the temperature with high stirring efficiency.
[0013]
(2) The latter half of the heating process and the first half of the cooling process The material to be agitated in this experiment suddenly becomes a hard physical property and easily becomes a lump at a product temperature of 70 to 90 ° C. Therefore, the inner stirring blade 16 and the outer stirring blade 18 were rotated in opposite directions, the inner stirring blade 16 was rotated at 60 rpm, and the outer stirring blade 18 was rotated at 30 rpm. In this way, the material to be stirred is caught by the inner stirring blade 16 and the outer stirring blade 18 so as to be sandwiched and broken and pulverized, and stirred by the stirring shafts 36 and 37 and the stirring rod 40 provided asymmetrically with respect to the rotation axis A. Could be mixed. Furthermore, the inner stirring blade 16 and the outer stirring blade 18 send the material to be stirred in the vicinity of the rotation axis A toward the inner surface of the pot 12 by centrifugal force by this rotation, and perform uniform and efficient stirring cooking of the material to be stirred. I was able to.
[0014]
(3) Second half of the cooling step The material to be stirred again became fluid with soft physical properties at a product temperature of 60 to 80 ° C., and the inner stirring blade 16 and the outer stirring blade 18 were rotated in the same direction at 30 rpm. The material to be stirred in the pot 12 was fluidly stirred at a high rate and could be cooled quickly.
[0015]
Although the stirring apparatus of 2nd Embodiment is shown by FIG. 2, the description is abbreviate | omitted by attaching | subjecting the same component as the stirring apparatus of 1st Embodiment. The inner stirring blade 16 is asymmetric with respect to the rotation axis A, and does not have a member corresponding to the stirring rod of the first embodiment.
[0016]
Although the stirring apparatus of 3rd Embodiment is shown by FIG. 3, the description is abbreviate | omitted by attaching | subjecting the same component as the stirring apparatus of 1st Embodiment. As described above, the stirring rod 40 is not attached to both of the stirring shafts 36 and 37, but is attached to only one of the stirring shafts as shown in FIG.
[0017]
Although the stirring apparatus of 4th Embodiment is shown by FIG. 4, the description is abbreviate | omitted by attaching | subjecting the same component as the stirring apparatus of 1st Embodiment. The stirring rod 40 is not attached to the inside of the stirring shafts 36 and 37, but is attached only to the outside as shown in FIG.
[0018]
【The invention's effect】
According to the present invention, the material to be stirred does not adhere to the stirring blades, and the stirring blades exhibit high destruction efficiency and stirring efficiency, and an effect of efficiently obtaining a uniformly mixed stirring product can be obtained. Have
The present invention also has an effect that the material to be stirred can be efficiently stirred and cooking such as heating can be performed uniformly.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a stirring device according to a first embodiment of the present invention.
FIG. 2 is a cross-sectional view of a stirring device according to a second embodiment of the present invention.
FIG. 3 is a cross-sectional view of a stirring device according to a third embodiment of the present invention.
FIG. 4 is a cross-sectional view of a stirring device according to a fourth embodiment of the present invention.
[Explanation of symbols]
A Rotating axis 10 Base 12 Pot 14 Rotating shaft 16 Inner stirring blade 18 Outer stirring blade 20 Lid member 22 Stirred material inlet 30 Motor 32 Axle support member 34, 35 Arm 36, 37 Stirring shaft 40 Stirring rod 50 Scraping blade 70 Temperature sensor mounting member 72 Temperature sensor

Claims (5)

In the stirring vessel in which the bottom is a spherical surface, the stirring member is arranged so as to be rotationally driven around an inclined axis of the stirring member.
The stirring member comprises an annular inner stirring member and an annular outer stirring member that are driven to rotate about the same axis, and the inner stirring member is asymmetric about the rotation axis,
The stirring device, wherein the inner stirring member and the outer stirring member are rotationally driven in opposite directions. In the stirring vessel in which the bottom is a spherical surface, the stirring member is arranged so as to be rotationally driven around an inclined axis of the stirring member.
The stirring member comprises an annular inner stirring member and an annular outer stirring member that are driven to rotate about the same axis, and the inner stirring member is asymmetric about the rotation axis,
The stirring device, wherein the inner stirring member and the outer stirring member are rotationally driven at different rotational speeds in the same direction.   The stirring device according to claim 1 or 2, wherein the inner stirring member has a stirring protrusion on at least one of an inner side and an outer side of the annular portion.   The stirring device according to claim 1, wherein the outer stirring member has a scraping member that contacts the stirring container.   The stirring device according to claim 1 or 2, wherein the stirring vessel has a heating function.

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