JP2011104491A - Stirring blade, and stirring device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a stirring blade and a stirring device capable of making an object to be stirred more easily stirrable and mixable. <P>SOLUTION: The stirring blade 9 includes a helical screw 53 rotatably supported and disposed in a heating pot 5 to stir an object to be stirred present in the heating pot 5 by the rotation of the screw 53 while causing the object to move in the axial direction of the helical screw 53. The screw 53 includes a plurality of through-holes 79, 81, 83, 85, 87, 89 formed in a screw face 77 to penetrate the same, through which through-holes 79, 81, 83, 85, 87, 89, a portion of the object is allowed to pass, thereby the object can be made more easily stirrable and mixable. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a stirring blade and a stirring device capable of stirring an object to be stirred such as a food material.

  As a conventional stirring device, for example, as disclosed in Patent Document 1, a stirring blade disposed in a stirring container is supported by a support driving unit and is rotationally driven.

  In this stirrer, the stirring blades are driven to rotate and revolve with respect to the stirring vessel, and the stirring property and mixing property of the object to be stirred are improved.

  However, in the conventional structure, since the main body of the stirring blade has a flat plate shape, there is a limit to the improvement in stirring property and mixing property.

Japanese Patent Publication No. 50-3385

  The problem to be solved by the present invention is that there is a limit to the stirring property and mixing property of the object to be stirred.

  The present invention comprises a spiral main body that is rotatably supported in a stirring vessel in order to improve the stirring property and mixing property of the stirring object, and the stirring object in the stirring vessel is disposed on the main body portion. A stirring blade that stirs while rotating in the spiral axial direction by rotation, and the main part is characterized in that it has a through-hole formed through in the axial direction.

  According to the present invention, the agitated object in the agitation vessel is agitated while being moved in the spiral axial direction by the rotation of the blade body part, and a part of the agitated object is provided on the blade surface of the blade body part. It can be passed through the through hole, and the stirring property and mixing property of the object to be stirred can be improved.

It is a front view of a heating and stirring cooking apparatus (Example 1). (Example 1) which is a side view of the heating stirring cooking apparatus of FIG. (Example 1) which is sectional drawing of the heating hook shown in FIG. FIG. 4 is an enlarged front view of the stirring blade shown in FIG. 3 (Example 1). (Example 1) which is a top view of the stirring blade of FIG. (Example 1) which is a bottom view of the stirring blade of FIG. (Example 1) which is a top view which shows the rotation direction and revolution direction of a stirring blade, and the relationship with a cycloid motion.

  The purpose of improving the stirring property and mixing property of the object to be stirred was realized by providing a through hole in the spiral stirring blade.

The stirring blade and the stirring device of the present embodiment are applied to a heating and stirring cooking device that heats and stirs food as an object to be stirred.
[Configuration of heating and stirring cooking apparatus]
1 is a front view showing a heating and stirring cooking apparatus according to Embodiment 1 of the present invention, FIG. 2 is a side view thereof, and FIG. 3 is a sectional view of the heating pot shown in FIG.

  As shown in FIGS. 1 to 3, the heating and stirring cooking apparatus 1 of this embodiment includes a heating pot 5 as a stirring container, a support driving unit 7, and a stirring blade 9 on a support frame 3.

  The support frame 3 is installed on the floor by legs 11. The leg portion 11 is provided with a weight sensor 13 composed of, for example, a load cell, and detects the total weight on the support frame 3 including the heating hook 5, the support driving portion 7, the stirring blade 9, and the like. Yes. By this weight detection, it is possible to calculate the amount of water evaporation by heating cooking in the heating pot 5, and to perform automatic cooking of the heating and stirring cooking apparatus 1 or the like.

  The heating pot 5 is supported on the support frame 3 via a vertical frame 15 so as to be tiltable. The tilting of the heating hook 5 is performed by operating a tilting handle 17 provided on the vertical frame 15.

  The heating pot 5 is provided with a cylindrical wall portion 21 on a spherical bottom portion 19. An upper opening 23 is formed in the wall portion 21 of the heating pot 5 so that food can be input. From the upper opening 23, the cooking ingredients are also discharged by the tilting of the heating pot 5. A removable cover 25 is attached to the upper opening 23.

  The bottom portion 19 of the heating pot 5 is formed with a convex portion 27 at the central portion of the inner periphery. Around the convex portion 27, a circular concave portion 29 is defined. A fluid jacket 31 for heating and cooling is provided on the outer periphery of the bottom 19 of the heating pot 5.

  The fluid jacket 31 has a closed cross section with the bottom portion 19. Steam and cooling water are switched and supplied to the fluid jacket 31 via the piping part 33. From the fluid jacket 31, water or the like after heating or cooling can be discharged through a drain valve 35.

  A stirring blade 9 is rotatably supported in the heating pot 5 via a support driving unit 7.

  The support drive unit 7 is supported on the support frame 3 via a hydraulic unit 37. The support drive unit 7 can be moved up and down by a hydraulic cylinder 39 of the hydraulic unit 37 as indicated by a two-dot line in FIG. The drive control of the hydraulic unit 37 can be performed by operating the operation panel 41. The support drive unit 7 includes a drive box 43.

  The drive box 43 is provided with an electric motor (not shown) inside. One end side of the drive box 43 is supported by a hydraulic cylinder 39 of the hydraulic unit 37, and the other end side is disposed above the heating hook 5. A rotating part 45 is provided on the other end side of the drive box 43.

  The rotating portion 45 is formed in a cylindrical shape, and is supported on the drive box 43 side so as to be rotatable around an axis. The rotating part 45 is arranged so that its axis coincides with the axis of the heating hook 5. The rotating unit 45 is driven to rotate by an electric motor in the drive box 43. The drive control of the electric motor can be performed by operating the operation panel 41. The rotating portion 45 is provided with a support portion 47.

  The support portion 47 is formed in a cylindrical shape and is integrally attached to the lower surface of the rotation portion 45. The support portion 47 is arranged such that its axis is eccentric with respect to the axis of the rotating portion 45. A drive shaft 49 is disposed on the shaft center portion of the support portion 47.

  The drive shaft 49 is supported so as to be rotatable around the axis with respect to the support portion 47. The drive shaft 49 is rotationally driven by the electric motor together with the rotating unit 45. The rotation direction of the drive shaft 49 can be switched by the switching lever 50 of the drive box 43. A stirring blade 9 is detachably linked to the drive shaft 49.

  4 is an enlarged front view of the stirring blade shown in FIG. 3, FIG. 5 is a plan view of the stirring blade of FIG. 4, and FIG. 6 is a bottom view of the stirring blade of FIG.

  As shown in FIGS. 3 to 6, the stirring blade 9 is integrally provided with a screw 53 as a blade body portion on the outer periphery of the shaft portion 51.

  The shaft portion 51 is made of stainless steel or the like and is formed in a hollow cylindrical shape. The outer diameter of the shaft portion 51 is set to about 60.5 mm. The shaft portion 51 is disposed in the heating pot 5 along the vertical direction, and the drive shaft 49 of the support drive portion 7 is inserted concentrically therein.

  The shaft portion 51 has a proximal end portion 57 and a distal end portion 59 coupled to both ends of the intermediate shaft portion 55. The intermediate shaft portion 55 is formed in a cylindrical shape, and female fitting portions 61 and 63 are formed on the inner periphery of both ends.

  The base end portion 57 is formed in a cylindrical shape. A joint portion 65 bulging in the radial direction is formed on the proximal end side of the proximal end portion 57. The joint portion 65 is provided with a slit 67 for preventing rotation. The slit 67 is engaged with the drive shaft 49 side of the support drive unit 7.

  The distal end side of the base end portion 57 includes a male fitting portion 69, and the male fitting portion 69 is fitted to the female fitting portion 61 of the intermediate shaft portion 55. The base end portion 57 and the intermediate shaft portion 55 are integrally coupled by welding, for example. A circumferential flange portion 71 is integrally attached to the outer periphery of the base end portion 57 by welding or the like.

  The distal end portion 59 is formed in a tapered shape that tapers toward the distal end side. The distal end side of the distal end portion 59 is positioned in the concave portion 29 of the bottom portion 19 of the heating pot 5. The proximal end side of the distal end portion 59 includes a male fitting portion 73, and the male fitting portion 73 is fitted to the female fitting portion 63 of the intermediate shaft portion 55.

  A female screw portion 75 is formed on the inner peripheral side of the distal end portion 59. The distal end of the drive shaft 49 of the support drive unit 7 is screwed into the female screw unit 75. Thus, the shaft portion 51 is fastened to the drive shaft 49 of the support drive portion 7 and the tip portion 59 is integrally coupled to the intermediate shaft portion 55.

  A screw 53 is integrally provided on the outer periphery of the shaft portion 51. The screw 53 is made of stainless steel or the like and is formed in a spiral shape. Due to this spiral shape, the screw 53 has a screw surface 77 which is a blade surface thereof set to be inclined.

  The screw 53 is wound around the outer periphery of the shaft portion 51 from the distal end portion 59 side to the proximal end portion 57 side. The number of turns of the screw 53 is about 1.5 turns about one and a half around the shaft portion 51, and the total length of the screw 53 is set to about 435 mm. However, the number of turns and the total length of the screw 53 can be arbitrarily set.

  The inner edge of the screw 53 is integrally coupled to the outer periphery of the shaft portion 51 by welding or the like. The outer edge of the screw 53 gradually decreases in diameter from the spiral intermediate portion toward both ends. The intermediate portion is formed over a predetermined range in the spiral direction of the screw 53. In the present embodiment, the intermediate portion is arranged to be biased toward the base end portion 57 side of the shaft portion 51, and covers about 0.75 turns, which is about half of the whole.

  In the middle part of the screw 53, the diameter (winding diameter) of the outer edge of the screw 53 is formed to be substantially constant and maximum. In this embodiment, the maximum winding diameter of the screw 53 is set to about 370 mm, and the maximum width between the inner edge and the outer edge is set to about 155 mm.

  A plurality of through holes 79, 81, 83, 85, 87, 89 are formed through the screw surface 77 of the screw 53. Although six through-holes are formed in this embodiment, the number of through-holes is arbitrary, and it is possible to set fewer or more than six. The through holes 79 to 89 are arranged at predetermined intervals in the spiral direction of the screw 53.

Each of the through holes 79 to 89 has a circular shape. However, the shape of the through holes 79 to 89 is arbitrary, and may be a polygonal shape, an elliptical shape, or the like, for example. The sizes of the through holes 79 to 89 are formed so as to gradually become smaller as the diameter of the outer edge of the screw 53 is reduced. In this embodiment, the diameter of the through holes 79 to 89 in the middle portion of the screw 53 is set to about 100 mm, and the diameters of the through holes 85, 87, 90 are sequentially about 90 mm as going to the tip side (one end side) of the screw 53. , 70 mm, and 50 mm.
[Agitating blade drive control]
As shown in FIGS. 1 and 3 to 6, the stirring blade 9 is driven to rotate and revolve with respect to the heating pot 5 by the support drive unit 7.

  That is, in the support drive unit 7, the rotation unit 45 and the drive shaft 49 rotate around the axis according to the drive control of the electric motor. As a result, the drive shaft 49 of the support drive unit 7 rotates around the axis of the heating hook 5 while rotating around the axis.

  In conjunction with the drive shaft 49, the stirring blade 9 also rotates around its axis and pivots around the axis of the heating pot 5. Thus, the stirring blade 9 revolves while rotating in the heating pot 5. At this time, the rotation direction of the stirring blade 9 can be switched by operating the switching lever 50.

  Due to the rotation and revolution, the stirring blade 9 performs a trajectory motion (cycloidal motion) of a cycloid curve with respect to the heating pot 5.

  FIG. 7 is a plan view showing the relationship between the rotation direction and revolution direction of the stirring blade and the cycloid motion.

As shown in FIG. 7, the stirring blade 9 performs an epicycloidal motion when the rotation direction and the revolution direction are the same direction, and performs a hypocycloid motion when the rotation direction and the revolution direction are opposite directions.
[Operation of heating and stirring cooking device]
In the present embodiment, the ingredients are fed from the upper opening 23 of the heating pot 5 during stirring cooking. After the food is added, the electric motor of the support driving unit 7 is driven and controlled by the operation panel 41 to drive the stirring blade 9 to rotate and revolve. When heating and stirring cooking is performed, steam is supplied to the fluid jacket 31 to heat the heating pot 5.

  Due to the combined action of rotation and revolution of the stirring blade 9, the ingredients can be stirred and mixed. That is, the stirring blade 9 can perform relatively large macro agitation and mixing (macro agitation) with respect to the food of the entire heating kettle 5 by revolution. At the same time, the stirring blade 9 can cause relatively moderate stirring and mixing (micro stirring) with respect to nearby foodstuffs by rotation.

  During micro-stirring, the screw surface 77 of the rotating stirring blade 9 rotates to apply a force that causes the food material to flow upward or downward. As a result, the stirring blade 9 can stir or mix the food material while moving the food material upward or downward in the spiral axial direction by rotation. In this embodiment, according to the inclination setting of the screw surface 77 of the stirring blade 9, the food material is caused to flow upward by the hypocycloidal motion, and the food material is caused to flow downward by the epicycloidal motion.

  When the food material moves up and down, a part of the food material passes through the through holes 79 to 89 without receiving a force from the screw surface 77 of the stirring blade 9. Thereby, the flow of the opposite direction to the said up-and-down flow can be formed with respect to a foodstuff. As a result, the food material is divided into a portion that passes through the through holes 79 to 89 and a portion that does not pass, and relatively small stirring and mixing are promoted. This agitation and mixing is performed to perform finer three-dimensional agitation (mixing) than micro agitation.

  When the food material flows upward, the screw surface 77 of the stirring blade 9 performs so-called diffusion mixing such as scooping, crushing, and pressureless mixing with respect to the food material. In addition, the fine three-dimensional stirring can be performed by allowing the food to pass through and move through the through holes 79 to 89 of the stirring blade 9 to improve the mixing property. The food material that has reached the other end of the screw 53 is guided into the heating pot 5 by the flange 71 of the shaft portion 51.

  When the food material flows downward, the screw surface 77 of the stirring blade 9 performs mixing such as kneading, mixing, dispersion, and pressurization, so-called pressure kneading. Furthermore, as described above, fine three-dimensional stirring can be added to improve the mixing property.

  In the case of such fine three-dimensional stirring, as a result of part of the food material moving through the through holes 79 to 89 of the stirring blade 9, it is possible to weaken the pressure that moves downward of the food material and increase the fluidity. As a result, in this embodiment, the driving force of the stirring blade 9 can be reduced.

  In general, in the case of a food material having poor fluidity such as powder, it is necessary to extremely increase the driving force of the stirring blade 9 during mixing in the pressurizing direction, so that pressurization and kneading becomes practically difficult.

On the other hand, in the present embodiment, the driving force of the stirring blade 9 can be reduced as described above, and therefore, pressure kneading can be performed even for a food material having poor fluidity such as powder. In addition, in this embodiment, the rotation speed of the stirring blade 9 can be set high, and the kneading effect can be enhanced.
[Effect of Example]
The stirring blade 9 of this embodiment includes a spiral screw 53 that is rotatably supported in the heating pot 5, and stirs the food in the heating pot 5 while moving it upward or downward by the rotation of the screw 53.

  In addition, since the stirring blade 9 has through holes 79 to 89 formed through the screw surface 77 of the screw 53, a part of the food that moves upward or downward can pass through the through holes 79 to 89. .

  Therefore, a foodstuff can be divided | segmented into the part which passes the through-holes 79-89, and the part which does not pass, and stirrability and mixing property can be improved.

  Moreover, in the stirring blade 9 of the present embodiment, as a result of part of the food material passing through the through holes 79 to 89 of the stirring blade 9, the fluidity of the food material can be increased and the driving force of the stirring blade 9 can be reduced. Can do.

  As a result, the stirring blade 9 can expand the range of ingredients that can be pressure-kneaded, and can also be applied to pressure-kneading of ingredients with poor fluidity such as powder. In addition, in the stirring blade 9, the number of rotations of the stirring blade 9 can be set high to further improve the stirring property and mixing property.

  Since a plurality of the through holes 79 to 89 are provided at predetermined intervals in the spiral direction of the screw 53, the stirring property and the mixing property can be improved in the entire region of the screw 53.

  Since the outer edge of the screw 53 gradually decreases in diameter from the spiral intermediate portion toward at least the distal end portion, it is possible to secure a moving force upward or downward of the food at the intermediate portion, while at the distal end portion. The fluidity can be increased by reducing the pressure caused by the movement of the ingredients.

  Since the through holes 79 to 89 are formed to be gradually smaller as the diameter of the outer edge of the screw 53 is reduced, it is possible to suppress poor stirring and poor mixing at the tip of the screw 53.

  In the heating and stirring cooking apparatus 1 according to the present embodiment, the stirring blade 9 is driven to rotate about the axis with respect to the heating pot 5 and revolved by the support driving unit 7.

  For this reason, the stirring blade 9 can perform stirring and mixing by moving the ingredients upward or downward due to rotation at the same time as stirring and mixing with respect to the ingredients of the heating kettle 5 as a whole due to revolution. Can be improved.

  As mentioned above, although the Example of this invention was described, this invention is not limited to this, The various change accompanying the element of a structure is possible. For example, in the said Example, although the heating stirring cooking apparatus 1 as a stirring apparatus provided with the stirring blade 9 was demonstrated, it is applicable besides a cooking apparatus.

  Moreover, in the said Example, although the several through-holes 79-89 were provided, it is also possible to set it as a single through-hole, for example.

  Moreover, although the through-holes 79 to 89 are arranged at predetermined intervals of the spiral shape, they may be arranged at different intervals, for example.

  The sizes of the through holes 79 to 89 are formed to be gradually smaller in accordance with the reduction in the diameter of the outer edge of the screw 53. However, for example, all of the through holes 79 to 89 can have the same size.

  The screw 53 of the stirring blade 9 has a gradually decreasing diameter from the spiral intermediate portion toward at least one end, but may be formed so that the outer edge has the same diameter over the entire spiral shape, for example.

  The stirring blade 9 has the screw 53 attached to the shaft portion 51, but the shaft portion 51 may be omitted and the screw 53 may be directly attached to the drive shaft 49 of the support drive portion 7.

1 Heating and stirring cooking device 5 Heating pot (stirring container)
7 Support drive part 9 Stirring blade 53 Screw (blade body part)
77 Screw surface (blade surface)
79, 81, 83, 85, 87, 89 Through hole

Claims (5)

A stirring blade that includes a spiral blade body that is rotatably supported in the stirring vessel, and that stirs while moving the object to be stirred in the stirring vessel in the spiral axial direction by the rotation of the blade body. There,
The blade main body portion includes a through hole formed through the blade surface.
A stirring blade characterized by that. The stirring blade according to claim 1,
A plurality of the through holes are provided at predetermined intervals in the spiral direction.
A stirring blade characterized by that. The stirring blade according to claim 1 or 2,
The outer edge of the blade main body portion has a gradually decreasing diameter from the spiral intermediate portion toward at least one end portion,
A stirring blade characterized by that. A stirring blade according to claim 2 or 3,
The plurality of through holes are formed to be gradually smaller in accordance with the diameter reduction of the outer edge of the blade main body part,
A stirring blade characterized by that. A stirring device comprising the stirring blade according to any one of claims 1 to 4,
A support drive unit that supports and rotates the stirring blade;
The support driving unit rotates and drives the stirring blade around the axis with respect to the stirring container and revolves.
A stirrer characterized by that.

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