KR20100094310A - Stirring cooker - Google Patents

Abstract

PURPOSE: A stirring cooker is provided to prevent sticking of objects and carry out uniform heating through forward and reverse rotation. CONSTITUTION: A stirring cooker comprises a driving control unit(25) which changes the rotational direction of a support arm(17) forward and reversely. A pair of agitating blades(19a,19b) rotate forward to scrape and pick up objects from the bottom of a heating vessel(2) and swirl food stuffs along the outer periphery. And, the agitating blades rotate reversely to press the objects toward the bottom of the heating vessel.

Description

Stirring Cooker {Stirring Cooker}

The present invention relates to a stirring cooking apparatus for cooking while stirring a heating agitated material such as food to be cooked. In particular, the present invention relates to a stirring cooking apparatus capable of avoiding deterioration of mixing efficiency, seizure and deterioration even in agitated materials lacking fluidity.

Conventionally, the rotor blade which contacted the inner surface of a heating pot is rotated freely around an axis by the lower end part of the stirring drive shaft dripped in a heating pot, and stirring stirring of foodstuffs, etc. in a heating pot with this stirring blade freely rotates. A stirring cooking apparatus is known in which water to be stirred is not pressed by stirring water under heating.

As an example of such a stirring cooking apparatus, the present applicant freely rotates a support arm extending in the circumferential direction at the lower end of the stirring drive shaft around the shaft, and places the agitated object at the distal end of the support arm in the axial direction. At least one stirring blade inclined at a predetermined angle to move in the circumferential direction is formed, and the lower end portion of the stirring blade is formed to conform to the bottom shape of the heating cooker, and the lower end portion of the stirring blade is stirred at the stirring driving shaft at the bottom of the heating cooker. A stirring cooking apparatus is provided, which is provided with a biasing end that is biased in the direction to be brought into contact, and is configured to perform a stirring movement with its own trajectory on the stirring blade (Japanese Patent Laid-Open No. 2000-107031). See publication number).

According to the said prior art, the situation where agitated material is ubiquitous at a specific location in a heating pot, and a stirring residue arises can be effectively avoided.

However, in the above prior art, for example, when stirring agitated objects, such as adzuki beans, which are relatively poor in fluidity, under agitation, there is a fear that the agitated objects will be banned by stirring blades, stirring drive shafts, or the like, resulting in a decrease in mixing efficiency. have.

In addition, although most of the to-be-agitated thing which lacks fluidity is scraped off by the stirring blade, when scraping off, some may remain in the film form on the inner bottom face of a heating pot. In this case, there is a fear that these residues will stick.

And when scraping | mixing the to-be-agitated thing lacking fluidity mentioned above, a to-be-stirred thing may adhere to the back surface side of a stirring blade. On the back side of such a stirring blade, there is hardly any replacement of the agitated object attached there, and it stays for a long time under heating. For this reason, there exists a possibility that the to-be-adhered to-be-adhered object may turn into a solid thing etc. with progress of heating stirring.

An object of the present invention is to provide a stirring cooking apparatus capable of avoiding deterioration in mixing efficiency, seizure or deterioration even in agitated material lacking fluidity.

In order to achieve the above object, the stirring cooking apparatus according to the present invention is a heating vessel capable of receiving and heating the agitated object to be cooked, a stirring drive shaft installed by dropping into the heating vessel, and the lower end of the stirring drive shaft The stirring target is extended by at least one stirring blade which extends in the circumferential direction of the drive shaft and is supported in the axial direction so as to be movable in the axial direction and the stirring blade rotates in accordance with the rotation of the stirring drive shaft. And a drive control unit for driving control for stirring water, wherein the drive control means performs drive control for switching the rotation direction of the stirring blade into the forward rotation direction and the reverse rotation direction, and the stirring blade rotates its forward rotation. At the same time, a stirring operation is performed in which the agitated object is scraped off from the bottom of the heating vessel and pumped up. At the same time the reverse rotation time is the operative portion and from the bottom of the heating vessel to press the to-be-stirred water as a whole toward the bottom of the essential characteristics thereof.

In the stirring cooking apparatus according to the present invention, the driving control unit performs driving control for switching the rotation direction of the stirring blades in the forward rotation direction and the reverse rotation direction, wherein the stirring blades are subjected to stirring from the bottom of the heating vessel during the forward rotation. The stirring and scraping operation is performed while the counterclockwise rotation is made to press the agitated object as a whole to the bottom side while floating from the bottom of the heating vessel.

In this way, the stirring action of scraping and stirring up the agitated object from the bottom of the heating vessel and the action of pressing the agitated object to the bottom side as a whole as the stirring blade floats from the bottom of the heating vessel are alternately performed. In addition, it is possible to effectively promote mixing of the agitated object in the vertical direction. Therefore, even if the agitated material lacks fluidity, the mixing efficiency can be maintained at a high level.

Further, in the agitated object remaining at the bottom when scraping in the forward rotation, a new agitated object is pressed on the pressing operation in the reverse rotation. As a result, in the remaining agitated material, water movement and heat transfer occur through the new agitated material, and the overheating is avoided in advance, and the water is absorbed by the water absorption, and the next forward rotation is performed. It is easily scraped off during scraping. Therefore, it is possible to avoid premature adhesion of the agitated material and to perform uniform heat treatment of the agitated material.

Then, by alternately switching the rotation direction of the stirring blades in the forward rotation direction and the reverse rotation direction, both front and rear surfaces of the stirring blade are used as contacting surfaces with respect to the agitated object, and the agitated object is on the back side of the stirring blade. As a result of being able to effectively suppress the state which adheres to for a long time, deterioration of a to-be-agitated object can be suppressed to a reliable and high level.

Hereinafter, a stirring cooking apparatus according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Example 1

A stirring cooking apparatus according to Example 1 will be described with reference to FIGS. 1 to 3.

(Schematic Configuration of Stirring Cooker According to Example 1)

1 is a longitudinal cross-sectional view of the main portion of the stirring cooking apparatus according to the first embodiment of the present invention, Figure 2 (A) is a front view showing a partial cross-sectional view of the configuration around the stirring drive shaft, Figure 2 (B) is an arrow A of FIG. 3 is a plan view showing the installation state of the stirring blades disposed through the support arm at the lower end of the stirring drive shaft, FIG. 4 is an explanatory view showing the movement traces of the stirring blades, and FIG. Explanatory drawing which shows the flow state of the foodstuff resulting from the flow angle (alpha) by installation of the stirring blade, FIG. 5 (B) shows the flow state of the foodstuff due to the inclination angle (beta) by installation of the stirring blade. It is explanatory drawing.

The stirring cooking apparatus 1 according to the first embodiment is used for heating stirring of fluid to be stirred, and in particular, for example, a stirred material which lacks fluidity such as powder or solid, such as hydrous powder or adzuki bean, or plastic flow. It is suitably used for heating stirring of materials and the like. However, you may apply to the to-be-mixed object with favorable fluidity | liquidity.

As shown in FIG. 1, the stirring cooking apparatus 1 according to the first embodiment includes a heating cooker capable of receiving and heating food materials (corresponding to the “stirred product” of the present invention) such as adzuki beans as a cooking target (the present invention). Corresponds to the "heating container" (2).

The hot pot 2 has a material such as iron, copper, stainless steel, or an adhesive copper plate of copper and stainless steel, and has a bottom surface formed into a curved or hemispherical shape. The heating cooker 2 is configured to be heatable by suitable heating means such as gas, electricity, or steam supplied to a vapor chamber (not shown) covering the outer periphery of the bottom thereof.

Above the heater 2, a speed reducer (not shown) is provided to reduce the rotational driving force of the motor M covered by the case cover 3, and a chain sprocket fixed to the output shaft of the speed reducer (not shown). The endless chain 4 is caught, and the endless chain 4 is engaged with the chain sprocket 6 of the drive transmission shaft 5 which is the rotating mechanism on the drive side.

A main gear 7 is fixed to the drive transmission shaft 5, and a driven gear 8 meshing with the main gear 7 is fixed to the upper end 9a of the sun shaft 9.

The sun shaft 9 is freely supported on the lower end of the cover 3 via a bearing 10. The sun gear 11 is fixed to the lower end of the sun shaft 9 and is engaged with the planetary gear 13 provided at the tip of the planetary shaft 12.

The planetary shaft 12 is rotatably supported by the rotating member 14 fixed to the solar shaft 9, and the stirring drive shaft 15 which coincides with the planetary shaft 12 by the connecting mechanism 16 is connected to the planetary shaft 12. Desorption is freely connected, and it is arrange | positioned inclined toward the inside of the heating pot 2 from the inclined upper direction. Specifically, the planetary shaft 12 is inclined by a predetermined inclination angle γ, preferably 15 to 25 degrees with respect to the vertical direction.

The stirring drive shaft 15 includes a coupling shaft 15a having a coil spring (elastic member) 16a for attaching the lower end portions of the stirring blades 19a and 19b to be described later to the inner bottom side of the heating cooker 2. And a hollow shaft tube 15b through which sliding members 15d, such as bearings or rollers, attached to the lower end of the connecting shaft 15a are freely fitted in the axial direction of the connecting shaft 15a. have.

The elastic member 16a, the sliding member 15d, and the hollow shaft tube 15b constitute a biasing means 16A for biasing the lower ends of the stirring blades 19a and 19b to the inner bottom side of the heating cooker 2. have.

A support arm 17 is disposed at the lower end portion 15c of the hollow shaft tube 15b. The support arm 17 is held at the center in the axial direction by the holding pin 18, and the seesaw swing is freely extracted in the vertical direction with this holding point. Therefore, when the stirring drive shaft 15 rotates in the circumferential direction, the support arm 17 is configured to rotate in accordance with this.

As shown in Fig. 2A, the left and right front ends 17a and 17b of the support arm 17 are made of, for example, metal agitator blades 19a and 19b having excellent heat resistance. Each is fixed by 20a. 1, 2 (A) and (B) exemplify embodiments in which the sizes of the stirring blades 19a and 19b are different from each other, the present invention is not limited thereto, and the stirring blades 19a and 19b of the present invention are not limited thereto. The size may be the same.

The support arm 17 bends the longitudinal left and right ends 17a and 17b in opposite directions in the front and rear directions, respectively, and is bent in the vertical direction toward the lower side to form the bent ends 17c and 17d. It is.

As shown in FIG. 3 and FIG. 5 (A), the stirring blades 19a and 19b are predetermined angles spreading at an acute angle toward the back of the forward rotation direction with respect to the axial direction 17e of the support arm 17, for example For example, they are inclined at the bent ends 17c and 17d of the support arm 17 so as to form the flow angle α in the range of 5 to 45 degrees, preferably 25 to 35 degrees.

Moreover, as shown in FIG.2 (B) and FIG.5 (B), the stirring blades 19a and 19b are predetermined angles which make an obtuse angle forward of the support arm 17 forward, for example, 95, for example. Inclination angle in the range of degrees (5 degrees to the vertical direction) to 160 degrees (70 degrees to the vertical direction), preferably 115 degrees (25 degrees to the vertical direction) to 125 degrees (35 degrees to the vertical direction) It is inclined at the bent ends 17c and 17d of the support arm 17 so as to form β.

21 is a bellows provided in the upper opening part of the hollow shaft pipe 15b, and serves to prevent a food material from adhering to the connecting shaft 15a and the coil spring 16a, or to prevent lubrication oils from scattering.

Reference numeral 22 denotes a rail fixed to the inner wall surface of the hollow shaft pipe 15b, and serves to guide the sliding members 15d such as rollers and bearings provided at the tip of the connecting shaft 15a in the vertical direction. The coil spring 16a is supported between the locking member 15e of the connecting shaft 15a and the upper end of the rail 22, respectively.

By the way, since the drive control which alternately switches the rotation direction of the support arm 17 in which the stirring blades 19a and 19b were arrange | positioned in the forward rotation direction and the reverse rotation direction is performed, the rotation direction and rotation of the motor M are carried out. The drive control unit 25 for controlling the speed is connected. The drive control unit 25 is connected with a weight sensor 27 capable of detecting the weight of the food material.

The weight detection value of this weight sensor 27 is used for the purpose of acquiring the information regarding the viscosity of the food material to be agitated. That is, at the beginning of the heating and stirring step, the weight of the food material is higher in the later stage of the heating and stirring step, because the weight detection value of the food material is large (the proportion of moisture in the food material is large, therefore, the fluidity is high and the viscosity is low). On the basis that the detection value is relatively low (the proportion of water in the food is small, and therefore, the fluidity is low and the viscosity is high), information on the viscosity of the food is obtained through weight detection of the food.

The drive control unit 25 changes the frequency of rotating the stirring blades 19 in reverse rotation based on the viscosity of the agitated object, and alternately rotates the stirring blades 19 in the forward and reverse directions according to the changed frequency. It is comprised so that drive control to rotate may be performed. Specifically, the drive control unit 25 performs drive control to rotate the stirring blade 19 in the forward rotation direction (one direction only) when the viscosity of the agitated material is low, while when the viscosity of the agitated material exceeds a predetermined threshold. (Specifically, when the weight detection value of the weight sensor 27 exceeds predetermined predetermined value), it is comprised so that drive control which rotates the stirring blade 19 alternately to a forward rotation direction and a reverse rotation direction may be performed.

(Operation of the stirring cooking apparatus according to Example 1)

Next, operation | movement of the stirring cooking apparatus which concerns on Example 1 is demonstrated.

First, the stirring mixing operation of the food material in the forward rotation direction will be described. The drive control signal from the drive control part 25 is made while putting the food material (stirred material), such as adzuki bean, which is to be cooked, into the hot pot 2 and heating the hot pot 2 by means of heating such as gas. The motor M is driven in accordance with the forward rotation command, and the rotational driving force is transmitted to the drive transmission shaft 5 via the endless chain 4.

The driving force of the drive transmission shaft 5 is transmitted to the solar gear 11 via the driven gear 8 of the solar shaft 9, and the planetary gear 13 and the planetary shaft which are fitted to the outer circumference of the solar gear 11. 12) rotates the stirring drive shaft 15 connected to the lower end of the planetary shaft 12 in the forward rotation direction while each repeats the revolution and rotation.

Thereby, while rotating and rotating the stirring blades 19a and 19b which were arrange | positioned at the lower end part of the stirring drive shaft 15 via the support arm 17 in the forward rotation direction (refer to the direction indicated by the solid arrow of FIG. 3). It moves, and the foodstuff in the heating pot 2 is stirred and mixed under heating.

At the time of stirring and mixing the food material in this forward rotation direction, each of the stirring blades 19a and 19b disposed at the lower end of the stirring drive shaft 15 is shown in Figs. Since it is provided in the support arm 17 which has a predetermined flow angle (alpha) with respect to the axial direction 17e of 17, therefore, a food material stirs with a forward rotational movement of the stirring blades 19a and 19b. As a result of the sliding of the food-contacting surface 23 of (19a, 19b) in the circumferential direction (refer to the solid arrow of FIG. 5 (A)), the situation where the food material is concentrated in the center part of the heating pot 2 is gathered. I can eliminate it.

Further, as shown in Figs. 2B and 5B, each of the stirring blades 19a and 19b disposed at the lower end of the stirring drive shaft 15 has a predetermined inclination angle (the oblique angle in the forward rotation direction ( (beta), it is provided in the support arm 17, so that the stirring blades 19a and 19b scrape off the food material near the bottom of the heating pot 2, and spread it toward the upper edge (Fig. 5 (B)). Can be stirred. Further, from the viewpoint of increasing the effect of pressing down the ingredients on the inner bottom surface of the heating cooker 2 during the reverse rotation, it is preferable to suppress the inclination angle β of the stirring blade (enlarge the obtuse angle in the forward direction of rotation).

Here, the pair of stirring blades 19a and 19b can take the movement of each reader. Referring to the relative motion of the inner bottom of the heating cooker 2 of each of the stirring blades 19a and 19b, one stirring blade 19a is rotated 180 degrees from the most standing state with respect to the inner bottom of the heating cooker 2. In the process of becoming almost horizontal, the other stirring blade 19b is made to move relative to the most standing state by rotating 180 degrees from the substantially horizontal state, as opposed to the stirring blade 19a.

In particular, while the ingredients are ubiquitous in the heating cooker 2, in the central portion, either one of each of the stirring blades 19a, 19b becomes a high state in which the food contact surface 23 stands up. It is possible to stir while raising the food material which is agitated toward the upper border of the stirring blade 19 in the state which made the amount of food material which deviates beyond the upper border of 19) extremely small.

If attention is paid to the movement of a specific point (in the drawing, the distal end portion) on one side of the stirring blades 19a and 19b, as shown in Fig. 4, a trajectory curve or a cycloid curve is drawn. Applying it to the pair of stirring blades 19a and 19b, respectively, it can be seen that the ingredients can be stirred without any corners over the entire area of the inner bottom of the heating cooker 5.

Further, by the action of the biasing means 16A provided on the connecting shaft 15a, the inner surface shape of the heating cooker 2 can be adapted to a special shape having a curved surface other than an arc shape, which is a part of the circle, and agitation. The lower end surfaces of the blades 19a and 19b can be brought into close contact with the inner bottom of the heating cooker 2 at all times, and reliable stirring and mixing can be performed without pressing the ingredients to the inner bottom of the heating cooker 2. .

On the other hand, when the motor M drives in the reverse rotation direction in accordance with the drive control signal (reverse rotation command) from the drive control unit 25, the rotational driving force is transmitted to the drive transmission shaft 5 via the endless chain 4. Delivered.

The driving force of the drive transmission shaft 5 is transmitted to the solar gear 11 via the driven gear 8 of the solar shaft 9, and the planetary gear 13 and the planetary shaft which are fitted to the outer circumference of the solar gear 11. 12) rotates the stirring drive shaft 15 connected to the lower end of the planetary shaft 12 in the reverse rotation direction while each repeats the revolution and rotation.

Thereby, the stirring blades 19a and 19b which were arrange | positioned at the lower end of the stirring drive shaft 15 via the support arm 18 are moved while rotating and rotating in a reverse rotation direction (refer the direction shown by the dotted arrow of FIG. 3). .

At the time of such reverse rotation, the food material is brought into the food material of the stirring blades 19a and 19b by the above-described flow angle α as opposed to the rotation of the forward rotation, with the reverse rotation of the stirring blades 19a and 19b. Attempts to move the contact surface 23 while sliding in the inner circumferential direction. Thereby, the new food ingredients wound around the outer peripheral direction are always supplied to each stirring blade 19a, 19b. Therefore, the flow angle (alpha) acts to assist the floating force generated by the inclination angle (beta) described later from the side of the food material supply to each of the stirring blades (19a, 19b).

In addition, the inclination angle (beta) described above allows the food material to infiltrate downward of the stirring blades 19a and 19b with the reverse rotational movement of the stirring blades 19a and 19b as opposed to the forward rotation. At this time, the floating force acts on the stirring blades 19a and 19b in a direction falling from the inner bottom surface of the heating cooker 2 by interaction with the food ingredients.

That is, in Example 1 of the present invention, the floating force generated in the stirring blade 19 during the reverse rotation of the stirring blade 19 resists the buoyancy force of the biasing means 16A, thereby bringing the stirring blade 19 to the upper portion of the food material. In order to make it float, the magnitude | size of the biasing force of the biasing means 16A (specifically, the elastic force of the coil spring 16a which is an elastic member) is set. For this reason, each stirring blade 19a, 19b at the time of reverse rotation rotates from the inner bottom face of the heating pot 2 by synergistic interaction with the foodstuff resulting from the above-mentioned flow angle (alpha) and inclination angle (beta). As a result of the strong floating force acting in the falling direction, after some reverse rotational rotation is performed, each of the stirring vanes 19a and 19b resists the biasing force of the biasing means 16A, so that the upper portion (top surface) of the food material. To near the top surface).

Therefore, each stirring blade 19a, 19b at the time of forward rotation rotates and stirs food ingredients from the bottom of the heating pot 2, and performs stirring operation which flows to the outer peripheral direction of the heating pot 2, and reverses. The stirring blades 19a and 19b at the time of rotation rotation operate | move so that most of foodstuffs may press to the bottom side of the heating pot 2 as a whole while floating from the bottom of the heating pot 2.

Subsequently, when the rotation direction of the support arm 17 is switched from the above-mentioned reverse rotation direction to the forward rotation direction, each stirring blades 19a and 19b at the time of reverse rotation are attributable to the flow angle α and the inclination angle β. As a result of the synergistic interaction with a food material, a strong flotation force acts in a direction falling from the inner bottom surface of the heating cooker 2, and the stirring angles 19a and 19b at the time of forward rotation are provided with a flow angle ( By the synergistic interaction with the ingredients due to α) and the inclination angle β, as a result of the strong stealth force acting toward the inner bottom side of the heating cooker 2 as opposed to the reverse rotation, The inner bottom surface (bottom) of the heating cooker 2 is reached while cutting food.

Each stirring blade 19a, 19b which reached the bottom of the heating cooker 2 is scraped up from the bottom of the heating cooker 2 at the time of the forward rotation, and the circumferential direction of the heating cooker 2 is raised. The stirring operation for flowing in the air is performed, and the stirring operation and the pressing operation described above are repeated alternately (periodically).

(Effect of Example 1)

Prior to the description of the effect of the first embodiment, the problem of heating and stirring food ingredients will be mentioned. For example, the bean paste is an operation of heating, kneading, evaporating, and concentrating boiled boiled bean paste and sugar, but in the case of hard bean paste, uniform mixing is difficult and sticking tends to occur. In particular, when the adzuki bean paste of hard bean paste is performed with a stirring cooker combining a stirrer with a flat pot, when the stirring blade is rotated, the bean paste slides the inner bottom and rotates together with the stirring blade. Occurs.

In this case, of course, the mixing of the bean paste does not occur, and since the bean paste does not adhere to the heat transfer surface (inner bottom surface of the high temperature wall), the thermal conductivity is low, and the air or vapor layer is interposed between the bean paste and the inner bottom surface. The heat transfer efficiency is extremely low. In addition, a small amount of adzuki beans attached to the wall surface is unable to transfer heat to other adzuki beans, so that they are overheated and crushed.

In addition, since most bean paste is rotated in the same direction as a wing as a lump, and mixing does not occur inside the bean paste, the uniformity of the product temperature due to the mixing of high bean paste near the wall and low bean paste inside It does not occur

As a result, the banquet of adzuki beans results in insufficient mixing of the products, squeezing of adzuki beans on the wall, a decrease in the amount of heating, and a poor heat transfer to the inside due to the mixing. There have been a number of problems that lead to a long time, and deterioration in quality due to seizure and thermal deterioration.

According to the stirring cooking apparatus according to the first embodiment, each stirring blade (19a, 19b) and scraping the ingredients from the bottom of the heating cooker (2) with the stirring operation to flow in the outer circumferential direction of the heating cooker (2) and As the stirring blades 19a and 19b rise from the bottom of the heating pot 2 and press the food ingredients to the bottom side alternately (periodically), the mixing of the food ingredients in the vertical direction as well as in the horizontal direction is effectively performed. I can promote it.

Therefore, even in the case of foodstuffs (stirred substances) lacking fluidity, the mixing efficiency can be maintained at a high level.

For example, even if food ingredients remain at the bottom of the heating cooker 2 during scraping in the forward rotation, new ingredients are pressed on the pressing operation in the reverse rotation. As a result, in the residual food material, water transfer and heat transfer occur through the new food material, and not only its overheating is avoided beforehand, but also in a swelling state by water absorption, and at the time of scraping in the next normal rotational rotation. It can be easily scraped off.

Therefore, the seizure of the food material is avoided beforehand, and the food product temperature can be uniformized.

Then, the rotational direction of the support arm 17 is alternately switched to the forward rotation direction and the reverse rotation direction, so that both front and rear surfaces of each of the stirring blades 19a and 19b are used as the contacting surfaces for the food ingredients, and each stirring As a result of the fact that foodstuffs stay on the back surface side of the blades 19a and 19b for a long time, the deterioration (concentration, drying, etc.) of the foodstuffs can be suppressed to a high level.

By the way, in the reverse rotation according to Example 1, the contribution from the viewpoint of improving the mixing efficiency is extremely large. However, since the stirring blades 19a and 19b rise to the top of the food material during the reverse rotation, the mixing itself is performed. 'S contribution is not very high. Therefore, it becomes a problem how to determine the ratio of the exercise time according to the forward rotation and the operation time according to the reverse rotation based on the improvement of the mixing efficiency as the whole heating stirring process.

From such a viewpoint, the drive control unit 25 rotates the stirring blade 9 in the reverse rotation based on the viscosity information of the food material detected by the weight sensor 27 (in accordance with the operation time and the reverse rotation according to the forward rotation). The ratio of the operation time) may be changed, and a configuration may be adopted in which drive control is performed to alternately rotate the stirring blades 19 in the forward rotation direction and the reverse rotation direction in accordance with the changed frequency.

Specifically, for example, based on the viscosity information of the food material detected and acquired by the weight sensor 27, when it is determined that the initial stage of the heating stirring process (low viscosity of the agitated material) is determined, the drive control unit 25 The drive control to rotate the stirring blade 19 in the forward rotation direction (one direction only). On the other hand, on the basis of the viscosity information of the food material detected and acquired by the weight sensor 27, when it is determined that the end of the heating stirring process (the viscosity of the agitated substance has exceeded a predetermined value determined in advance) is determined, the drive control unit 25 ) Performs drive control for alternately switching the rotational direction of the support arm 17 in the forward rotational direction and the reverse rotational direction, as in the case of performing the forward rotation four times and then performing the reverse rotation twice. In addition, the frequency of the reverse rotation with respect to the forward rotation may be appropriately changed in accordance with the progress of the heating and stirring process, taking into account the viscosity of the food material, the soaked state, the mixed state, and the like.

With this arrangement, as a result of switching control in the appropriate rotational direction in accordance with the progress of the heating and stirring process, the food cooking can be achieved with good finish.

However, the effect caused by the reverse rotation not only pushes the ingredients to be stirred to the inner bottom wall of the heating cooker 2, but also effects of the stirring mixture due to the inertia change generated in the stirring blade 19 during the reverse rotation. There is not much.

That is, for example, in the case of adzuki bean paste, the addition of the cake-shaped raw adzuki beans to sugar solution is performed. In this case, agglomerates of raw bean paste are formed in a bead shape, and the beads float in the sugar solution. Under such a situation, if the stirring blade 19 is rotated only in one direction, an appropriate external force cannot be exerted on the beads, which makes it difficult to disintegrate the beads. Under such a situation, when the stirring blade 19 is reversely rotated, as a result of the external force caused by the inertia change occurring on the stirring blade 19 acting on the beads, the beads can be easily collapsed.

In addition, when the rotation direction of the stirring blade 19 changes, the agglomerates of adzuki bean stuck to the wing surface are easily detached from the stirring blade 19 by the inertia force. Moreover, at the time of reverse rotation, the function which crushes this in the state which pushed the beads between the stirring blade 19 and the inner bottom wall of the heating pot 2 also arises.

In this way, by repeating the forward and reverse rotation of the stirring blade 19, it becomes possible to uniformly mix the green bean paste and the sugar solution in a short time.

This effect is not only brought about by the bean paste dough process, but is also the same in the process of preparing miso sauce in which miso is diluted with broth. That is, in one-way rotation, the problem that miso adhered to the back of the blade does not melt can be solved very simply by repeating the forward and reverse rotation of the stirring blade 19.

As described above, in the food stirring step, the timing of forward and reverse rotation of the stirring blades 19 is not limited to only the latter part, and the initial stage of mixing the red bean paste or the removal of deposits to the wings are required. It is preferable to apply to a step etc. suitably. In addition, it should be noted that depending on the kind of food material, there are cases where it is desirable to repeat the reverse rotation and the forward rotation from the beginning to the end of the food stirring process.

[Example 2]

Next, the stirring cooking apparatus which concerns on Example 2 is demonstrated with reference to FIG.

6 is a view showing a support arm used in the stirring cooking apparatus according to Example 2, FIG. 6 (A) is a plan view of the support arm according to Example 2, and FIG. 6 (B) is according to Example 2 6 (C) is a right side view of the support arm according to the second embodiment, and FIG. 6 (D) shows the mounting washer of the stirring arm in the support arm according to the second embodiment of FIG. 6 (A). Fig. 6 (E) is a side view of the mounting washer shown in Fig. 6 (D), and Fig. 7 shows the installation state of the stirring blade for the support arm according to the second embodiment of the present invention. It is explanatory drawing.

In addition, the stirring cooking apparatus according to the first embodiment and the stirring cooking apparatus according to the second embodiment have the same basic components, so that duplicate description thereof will be omitted, and the description will be focused on the differences between the two.

The difference of Example 1 and Example 2 is as follows. That is, in the support arm 17 according to the first embodiment, the center portion in the axial direction is detected by the gripping pin 18, and the support arm according to the second embodiment is configured to be symmetrical with the center portion as a boundary. In the arm 31, as shown to Fig.6 (A), (B), the extraction part 33 is provided in the position which offset the predetermined distance from the center part of an axial direction, and is comprised by the left-right symmetry, It differs from Example 1 in the point of symmetry accordingly.

In addition, in the support arm 17 which concerns on Example 1, the stirring blades 19a and 19b which have substantially the same size, shape, and a material are arrange | positioned at the both tip part 17a. As shown in FIG. 6, stirring blades 41a and 41b having different sizes (different shapes and materials may be provided) are disposed on both tip portions 35 and 37, respectively, as shown in FIG. It differs from Example 1 by the point of physical properties, such as the magnitude | size of the stirring blade arrange | positioned at the support arm.

In addition, in Example 1, the flow angle (alpha) set to a pair of stirring blades 19a and 19b is common, and at the time of forward rotation of each stirring blade 19a, 19b, Whereas the stirring blades 19a and 19b stir the food material to flow in the circumferential direction, in Example 2, the flow angles α set on the pair of stirring blades 41a and 41b are different from each other. At the time of forward rotation of the stirring blades 41a and 41b, as shown in FIG. 6, the small stirring blade 41a stirs the food material while flowing in and around the inner circumferential direction, while the large stirring blade ( 41b) is configured to stir the food material in the circumferential direction and with the extrusion flow, and differs from Example 1 in terms of the flow angle α set to each pair of stirring vanes.

Next, the supporting arm 31 according to the second embodiment will be described in detail. As shown in FIGS. 6A and 6B, the supporting arm 31 is offset from the central portion in the axial direction. A holding unit 33 having a holding hole 33a through which the holding pin 18 is inserted is provided.

On one side of the support arm 31 at the boundary of the holding portion 33, there is a first arm portion 31a having a short axis, a first branch portion 32a extending in a substantially perpendicular direction from the first arm portion 31a, The first mounting washer 35, which is provided at the tip of the first branch 32a and has an installation hole 35a for installing the first stirring blade 41a (see FIGS. 6 (D) and (E)). Are installed respectively. As shown in FIG. 6 (A), the first mounting washer 35 is inclined at a predetermined angle θ1 with respect to the axial direction of the support arm 31.

On the other side bordering the holding portion 33 of the support arm 31, the second arm portion 31b of the long axis, the second branch portion 32b extending substantially perpendicularly from the second arm portion 31b, The 2nd mounting washer 37 provided in the front-end | tip part of 2 branch part 32b, and having the installation hole 37a for installing the 2nd stirring blade 41b is provided, respectively. As shown in FIG. 6 (A), the second mounting washer 37 is inclined at a predetermined angle θ2 with respect to the axial direction of the support arm 31.

Each of the first and second branch portions 32a and 32b extending substantially perpendicular to each of the first and second arm portions 31a and 32b is viewed from the side direction as shown in Fig. 6C. They are inclined at a predetermined angle θ3 (for example, an angle which can be changed appropriately, such as 20 degrees) so as to be symmetrical with respect to the vertical direction.

In addition, in Fig. 7, P denotes a revolution axis and Q denotes a rotation axis. In addition, as shown in FIG. 7, in the 2nd stirring blade 41b, the outer peripheral side front end part 43 is curved in order to raise the effect of stirring, making extrusion material flow in the outer peripheral direction.

The small 1st stirring blade 41a plays the role which scrapes off the food material in the center part of the heating pot 2, while the 2nd large stirring blade 41b carries out the food material in the outer peripheral part of the heating pot 2; It mainly plays the role of scraping off. By the interlocking motion of these pairs of stirring blades 41a and 41b, it is comprised so that the food material put in the heating pot 2 can be scraped off every corner.

The pair of stirring blades 41a and 41b employing the above-described configuration is configured to empty the narrow space between the wings as widely as possible, so that food ingredients such as adzuki beans can move smoothly through the narrow space. It is important.

(Operation of the stirring cooking apparatus according to Example 2)

Next, operation | movement of the stirring cooking apparatus which concerns on Example 2 is demonstrated.

When the viscosity of the food is low, only the forward rotation is performed. When the viscosity of the food material exceeds the predetermined value, the forward rotation and the reverse rotation are periodically repeated. The operation of the drive control unit 25 is the same as that of the first embodiment.

By reverse rotation, the foodstuff is applied to the inner bottom face of the heating cooker 2 in a layered manner, the foodstuff is heated from the bottom face to raise the temperature, and the evaporation of the moisture contained in the foodstuff is promoted.

When it transfers to forward rotation, the stirring blade 41a, 41b reaches the inner bottom face of the heating pot 2, scraping off a layer gradually, and scrapes off the whole. At this time, the mixing in the vertical direction in the food material is promoted to enable uniform mixing, heat transfer to the inside is promoted, and the temperature of the food material is almost uniform. As such, the efficient stirring operation results in a shortening of the heating time.

Then, when the reverse rotation is rotated again, the food material is applied again in a layered manner on the inner bottom surface of the heating cooker (2). By repeating such a step, it is possible to efficiently heat-mix without pressing food ingredients in the scene of high-viscosity, heat-mixing, evaporative concentration, and the like.

In addition to the basic operation described above, in the pair of stirring blades 41a and 41b according to the second embodiment, conventional stirring is a result of the smooth movement of ingredients such as bean paste through a narrow space between the two wings. Compared with the blades, the mixing efficiency of the ingredients can be greatly improved.

Here, if the area of the stirring blade is large, the banquet of the food is easily caused. Therefore, from a viewpoint of suppressing banquet of a foodstuff, the smaller the area of a stirring blade is preferable. However, in the stirring cooking apparatus according to the present invention, there is a request to scrape every corner of the whole bottom surface of the heating cooker 2 without missing.

In view of all these points, the stirring blades 41a and 41b according to Example 2 are well-balanced.

Moreover, in the pair of stirring blades 41a and 41b which concerns on Example 2, since the magnitude | size of the stirring blade and the length of the support arm were comprised asymmetrically, the moment of the right and left moments of the support arm and the stirring blade will become unbalanced.

As a result, the stirring ability can be increased by generating turbulence in the food material, while when the load of the food material increases, one stirring blade falls from the inner bottom surface of the heating cooker 2 at the time of forward rotation, and the heating cooker 2 There is a possibility that the scraping of the ingredients may be insufficient without being in close contact with the inner bottom of the pan. On the other hand, at the time of reverse rotation, the stirring blade moves over the ingredients in an inclined state. That is, the stirring blades stand up from the horizontal state on the outer circumferential side of the heating cooker 2.

In order to suppress the behavior of the stirring blade, the rocking range of the support arm 31 is regulated from a horizontal angle to a predetermined angle (for example, an appropriately changeable angle such as 12 degrees) while being disposed on the support arm 31. A configuration that regulates the swinging range of the stirring blade from a horizontal angle to a predetermined angle (for example, an appropriately changeable angle such as 15 degrees) can be adopted.

In such a configuration, even in the forward rotational rotation under high load, the pair of stirring blades 41a and 41b adhere to the inner bottom surface of the heating cooker 2, so that the effect of scraping off the ingredients without leaving every corner can be expected. The foodstuffs can be stirred and mixed efficiently under heating without sticking.

The present invention is not limited to the above-described embodiments, and can be appropriately changed within the scope not contrary to the spirit or technical spirit of the invention, which is read from the claims and the entirety of the specification, and a stirring cooking apparatus accompanying such a change is also provided. It is included in the technical scope in the present invention.

That is, for example, in the embodiment of the present invention, an example in which a pair of stirring blades 19a and 19b are arranged on the support arm 17 crushed at the lower end of the stirring drive shaft 15 has been described. Is not limited to this example, and the configuration of the support arm may be omitted, and the stirring blade may be extended to the outer circumferential direction of the stirring drive shaft to have an inclined position with respect to the axial direction and to install the stirring blade movably in the axial direction. have.

Moreover, the structure which arrange | positions one stirring blade 19a only to one edge part of the support arm 17 can also be employ | adopted. In this case, as shown in FIG. 4, the tip L1 of the outer peripheral side of the stirring blade 19a rotates drawing the trace shown by a solid line, and also the stirring blade located in the center side of the heating pot 2 Since the rear end L2 of (19a) rotates drawing a trace shown by a chain line, in the whole stirring blade 19a, it touches and moves over the whole area | region of the inner bottom of the heating pot 2, and the food material to be stirred is moved. It can stir every corner.

Finally, in the embodiment of the present invention, the stirring cooking apparatus having an agitating and rotating agitating drive shaft (15) has been described by way of example, the present invention is not limited to this example, the stirring driving shaft (15) can be rotated only Needless to say, the present invention can be applied to an agitated cooking device with an excitation.

1 is a longitudinal sectional view of the main portion of the stirring cooking apparatus according to the first embodiment of the present invention.

Fig. 2 is a diagram showing the configuration around the stirring drive shaft, and Fig. 2 (A) is a front view partially showing a configuration around the stirring drive shaft, and Fig. 2 (B) is the right side viewed from the arrow A direction in Fig. 3. Fig. 1 (Example 1).

3 is a plan view showing the installation state of the stirring blades disposed through the support arm at the lower end of the stirring drive shaft (Example 1).

4 is an explanatory diagram showing the movement trajectory of the stirring blades (Example 1).

5 is a view for explaining the operation of the stirring blade, Figure 5 (A) is an explanatory view showing the flow state of the foodstuff resulting from the flow angle (α) according to the installation of the stirring blade, Figure 5 (B) It is explanatory drawing which shows the flow state of the foodstuff resulting from the inclination angle (beta) by installation of the stirring blade (Example 1).

6 is a view showing a support arm used in the stirring cooking apparatus according to Example 2, FIG. 6 (A) is a plan view of the support arm according to Example 2, and FIG. 6 (B) is a support according to Example 2 6 (C) is a right side view of the support arm according to Example 2, and FIG. 6 (D) shows an installation washer of the stirring blade in the support arm according to Example 2 in FIG. 6 (B). 6E is a side view of the mounting washer shown in FIG. 6D (Example 2).

7 is an explanatory diagram showing an installation state of the stirring blade for the support arm according to the second embodiment of the present invention (Example 2).

(Explanation of reference numerals)

1: Stirring Cooker 2: Heating Cooker

4: stepless chain 5: drive transmission shaft

15: stirring drive shaft 17, 31: support arm

19a, 19b, 41a, 41b: stirring blade 25: drive control unit

27: weight sensor 35: first mounting washer

37: second mounting washer

Claims (8)

A heating container for receiving and heating the agitated object to be cooked; A stirring drive shaft installed by dropping into the heating vessel; At least one stirring blade extending in an outer circumferential direction of the drive shaft at a lower end of the stirring drive shaft and supported to be movable in the axial direction with an inclination attitude with respect to the axial direction; A drive control section for performing drive control for stirring the agitated object by the agitating blades rotating in accordance with the rotation of the agitation drive shaft; The drive control means performs drive control for switching the rotational direction of the stirring blade to the forward rotation direction and the reverse rotation direction, The stirring blade performs a stirring operation of scraping up and stirring the agitated object from the bottom of the heating vessel during the forward rotation, while floating the bottom of the heating vessel during the reverse rotation. Stirring cooking apparatus, characterized in that it operates to press toward the bottom as a whole. The method according to claim 1, The stirring drive shaft is configured to be stretchable in the axial direction, A support arm extending in the outer circumferential direction of the drive shaft and pivoting along the drive shaft at a lower end of the stirring drive shaft, The stirring blade is disposed on the support arm by inclining a predetermined angle with respect to the axial direction of the stirring drive shaft, On the stirring drive shaft, a biasing means for biasing the stirring blade in the bottom direction of the heating vessel, The size of the biasing force of the biasing means is set so that the floating force generated in the stirring blade at the time of reverse rotation of the stirring blade resists the biasing force of the biasing means so that the stirring blade can float to the upper part of the agitated object. Stirring cooker characterized in that. The method according to claim 2, The stirring blade is inclined to the support arm so as to form an inclination angle that forms an obtuse angle in front of the forward rotation direction, and to form a flow angle that opens at an acute angle to the rear side of the forward rotation direction with respect to the axial direction of the support arm, Stirring is characterized in that the inclination angle is set in a range of 95 degrees (5 degrees in the vertical direction) to 160 degrees (70 degrees in the vertical direction) and the flow angle is set in the range of 5 degrees to 45 degrees. Cooking device. The method according to claim 2, The support arm is symmetrically extracted from the lower end of the stirring drive shaft, and the stirring blades are disposed at both ends of the support arm, respectively. The method according to claim 2, And abutting the support arm asymmetrically at the lower end of the stirring drive shaft, and making the size or shape of the stirring blades respectively disposed at both ends of the support arm different from each other. The method according to claim 4, And a seesaw rocker freely squeezes the support arm to a lower end of the stirring drive shaft, and a restricting member for restricting an operating range of the seesaw rocker is provided near the support arm. The method according to any one of claims 1 to 6, And a planetary gear that rotates and revolves against the outer circumference of the solar gear and connects the stirring drive shaft to a planetary shaft having a predetermined inclination angle with respect to the vertical direction. The method according to any one of claims 1 to 7, The drive control unit changes the frequency of rotating the stirring blades in reverse rotation based on the viscosity of the agitated object, and drives the drive control to rotate the stirring blades alternately in the forward and reverse rotation directions in accordance with the changed frequency. Stirring cooking apparatus, characterized in that performed.

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