JPS6142505Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a stir-frying device for cooking, and more specifically, a rotary device that can perform stir-frying operations in a variety of dishes, including spaghetti, fried noodles, fried rice, and vegetables, in large quantities and in a short time. Regarding stir frying equipment.

Many people have a common meal time, and during that certain time, a large number of people rush to the cafeteria. As a cafeteria, it is necessary to provide a large amount of prepared food within a limited time. Traditionally, this has been done by having a large number of cooks prepare the food, but it is uneconomical to employ a large number of cooks for the limited mealtimes, and the stir-frying process is monotonous. It was also pointed out that the problem of extremely poor retention among cooks due to the repetitive nature of the work.

To solve this problem, a rotary stir-fry device was proposed that could fry spaghetti, macaroni, fried noodles, fried rice, etc. in large quantities in a short time, and at the same time save labor. 53-149091, 55-60818). This device rotates the cylindrical pot around its axis while heating the cylindrical pot in which the food to be stir-fried is placed with a gas burner placed below, and swings the frame that houses the pot back and forth. It was hot. Rotation and rocking are
This exercise is used to efficiently stir the stir-fried food in the pot, prevent it from burning, and promote uniform stir-frying. Therefore, this device includes a frame swinging mechanism consisting of a geared motor, a cam, and a cam roller, a shaft attached to the back of the bottom of the pot (outer pot), a geared motor that provides rotational motion to the shaft, a sprocket, a transmission chain, etc. It is equipped with a rotational drive mechanism consisting of: The pot is comprised of an outer pot rotatably supported by a frame and an inner pot that can be housed within the outer pot and can be removed. The reason why the pot is of a double type is that a special inner pot is prepared depending on the type of food to be stir-fried, such as spaghetti or macaroni, and by changing the inner pot, various types of stir-fry can be done in a short time. It is said to be for the purpose of doing. Further, the side wall of the inner pot is equipped with plate-shaped or wave-shaped stirring blades parallel to the axis, which are essential for efficient stirring of the food to be stir-fried. Furthermore, these devices include a lid on the pot to prevent the food to be stir-fried from spilling out when the pot is rocked back and forth. Furthermore, in order to prevent the food to be stir-fried inside from becoming stuffy due to the provision of the lid, the lid is provided with an intake hole and the bottom of the pot is provided with an exhaust hole, and an exhaust blower is also provided.

In addition to the above configuration, the rotary frying device disclosed in Japanese Utility Model Application Publication No. 55-60818 is equipped with a mechanism for vibrating the frame that supports the pot. This mechanism consisted of a diaphragm, a spring, a vibrator, etc., and was said to help prevent the food being stir-fried from burning.

However, despite the statements in the above disclosure,
These conventional devices had the following drawbacks.

A lid is essential because the frame that supports the pot swings back and forth, and as a result, the food being stir-fried tends to get stuffy. Although stuffiness can be suppressed to some extent by providing intake and exhaust holes, an extra device called a blower is required. Further, since the exhaust gas contains a large amount of oil mist, the exhaust passage including the blower is likely to become unsanitary as the oil adheres to the exhaust passage including the blower and accumulates over a long period of use, and there is a risk of fire. It is also known that if the steam in the pot becomes too low due to excessive exhaustion, the sterilizing effect will be reduced.

If the pot has a lid, the cook cannot observe the frying process during the frying process, which is a considerable disadvantage for the cook. Further, although the lid is not directly heated, as a result of the shaking, the food to be stir-fried also moves and comes into contact with and adheres to the lid. It is necessary to remove the lid to observe the frying process or take out the food to be stir-fried, but the temperature is quite high, so there is a risk of burns.

The purpose of rocking the pan back and forth is to stir the food to be stir-fried back and forth and evenly coat the oil inside the pan, but in reality, this rocking actually worsens the flow of oil. I found out.

In addition, the frame vibration mechanism was not only found to have no effect on stir-frying operations, but also
It was found that the vibrations transmitted to each part accelerate wear and tear and shorten the lifespan.

The purpose of creating a double pot with an outer pot and an inner pot was to change the inner pot depending on the type of stir-fry.
Stainless steel inner pots for commercial use weigh between 20 and 100 kg, and replacing them is extremely difficult in practice. Furthermore, since the pots are double-layered, heat transfer to the food to be fried is poor, resulting in low thermal efficiency. In addition, there have been attempts to make multiple holes in the outer pot to improve heat transfer, but when this was done, some parts of the inner pot would be directly exposed to the flame of the gas burner, while others would not, and this problem could be avoided. Due to uniform heating, the surface of the inner pot became uneven, causing a problem of rapid deterioration.

In addition, the stirring blades installed along the axis on the inner wall of the inner pot prevent oil from flowing to the back side of the stirring blades (the back side in the direction of rotation) and the pot wall near it when the pot is rotated. The food being stir-fried was easily burnt.

Furthermore, heating causes thermal expansion of the pot, which causes strain stress to concentrate on the bearings that support the pot and the drive mechanism that rotates the pot, causing damage to these parts and mechanisms.

An object of the present invention is to provide a rotary frying device that eliminates the drawbacks of the prior art described above. That is,
Even without a rocking or vibration mechanism, oil flow and stir-fry can be achieved well, and since a lid is not required, there is no need for an intake/exhaust mechanism, allowing frying to be performed under appropriate conditions. The object of the present invention is to provide a frying device that can perform the following operations and also has high thermal efficiency.

Another purpose of the present invention is to prevent stress concentration on the bearings and drive mechanism caused by the thermal expansion of the pot, thereby preventing damage to these parts and providing a long-life frying device. Our goal is to provide the following.

That is, the present invention includes a pedestal, a main body frame rotatably supported by a support shaft on the pedestal, and a generally cylindrical container having one end open to form a mouth and the other end closed to form a bottom. a pot rotatably supported within the main body frame around its axis; heating means provided on the underside of the pot; means for rotationally driving the pot; and the main body frame. This is a rotary stir-frying device characterized by comprising means for freely rotating the stirrer around a support shaft and allowing it to stand still at a desired angle of inclination.

The present invention will be described in detail with reference to the drawings showing preferred embodiments of the present invention.

FIG. 1 shows a front view of the frying device of the present invention, shown with most of the front cover removed. FIG. 2 shows its side view. In both cases, the main body frame is horizontally stationary.

A main body frame 3 is supported by a support shaft 2 on a pedestal 1 having a roughly rectangular parallelepiped shape. The support shaft 2 is provided at opposite positions of the two lower edges of the main body frame, and includes a bearing 2a fixed to the main body frame, a pair of bearings 2b and 2c fixed to the pedestal 3, and a pair of bearings 2b and 2c fixed to the frame 3. It consists of a pin 2d passed through a bearing. Therefore, the main body frame 3 is rotatable around these support shafts. The pedestal 1 is supported at its four corners by legs 4 whose lengths are adjustable, so that the pedestal 1 can be adjusted horizontally.

Inside the main body frame 3 is a bottomed pot 5 which is approximately cylindrical and has an open mouth at one end and a closed end at the other end.
is supported in a substantially horizontal state with respect to the main body frame with the mouth facing forward (front). Pot 5 is
It is rotatably supported around a cylindrical axis by a rotating roller 6 and a rotating rail 7 at the front, and by a shaft 8 and a bearing 9 at the rear. That is, in the front part of the main body frame, two rotating rollers 6 and a cylindrical pot 5 are supported from below by a bearing 10 fixed to the main body frame 3 and a pin 11 supported by the bearing 10. It is supported. An annular rotating rail 7 along the circumference is fixed near the front end of the cylindrical pot 5, and this rotating rail 7 is accommodated in a groove 6a provided on the outer periphery of the rotating roller 6. Therefore,
It is desirable that the cross-sectional shape of the rotating rail 7 corresponds to the shape of the groove 6a of the rotating roller 6, and that the width of the groove is slightly larger than that of the groove. In this embodiment, the shapes of the rail and groove are both rectangular.

A shaft 8 integrated with the pot extends coaxially with the pot from the back side of the bottom wall 12 of the cylindrical pot 5, and this shaft 8 is rotatably supported by a bearing 9 provided on the main body frame 3. has been done.

Said shaft 8 is connected via a universal joint 13 to a further shaft part 14, which is supported at both ends by bearings 15 and 16. A passive wheel 17 is mounted approximately at the center of the shaft 14 to receive driving force from a drive motor 18. The drive motor 18 attached to the rear of the main body frame is preferably a variable speed transmission. A drive wheel 19 is fixed to the shaft of the drive motor 18, and a transmission chain 20 is placed between the driven wheel 17 and the drive wheel 19. In this way, the rotational force of the drive motor is transmitted to the pot 5 via the shafts 14, 8, and the rotational speed of the pot 5 can be adjusted to a desired size by adjusting the number of rotations of the drive motor.

A universal joint 13 provided between the shaft 8 and the shaft 14 prevents unnecessary stress from being applied to the shaft, the bearings supporting it, and the drive motor when the pot 5 is heated. That is,
Because the pot undergoes thermal expansion when heated, the central axis of the pot is eccentric from that before heating, and extends in the axial direction, but a one-piece shaft without a universal joint was supported on the main body frame by a bearing. In such cases, stress concentrates on the contact portion between the shaft and the bearing, and on the transmission mechanism consisting of the driven wheel, drive wheel, and chain, causing failure. When using a universal joint as in this example,
Stress caused by such thermal expansion can be effectively absorbed, and such failures can be prevented.

A gas pipe 21 is arranged below the pot 5 so that the pot 5 can be heated. Gas ignition, combustion amount adjustment, etc. can be performed automatically by using commercially available equipment.

One of the features of this invention is that by using a single pot instead of a double boiler, heat transfer is increased and thermal efficiency is improved, but the flame hits the outer wall of the pot directly. There is a risk of overheating. Therefore, it is preferable to add a thickness of, for example, 3 mm to the outer periphery of the pot.
It is best to use a metal net (preferably made of stainless steel) of ~20 mm. Rapid heating can be moderated by the metal net, and high thermal efficiency can be maintained. Note that in FIG. 2, illustration of the metal net is omitted.

It is also desirable to provide a flame stopper 22 on the outer periphery of the pot, located slightly inside the front surface of the body frame. The flame stopper not only prevents damage to the rotating rollers 6 and bearings 10 due to heating and protects the operator, but also has the effect of keeping the inside of the main body frame 3 warm. The bottom of the main body frame 3 has a structure with good ventilation, and an exhaust pipe 23 is provided at the top.

Although Fig. 2 shows a state in which the main body frame 3 is stationary in a position parallel to the pedestal 1, the main body frame 3 can be rotated within a certain angle range around the support shaft 2 to achieve the desired position. It can also stand still tilted forward or backward by an angle. As a driving means for this purpose, a geared motor 24 with a brake is installed at the rear left corner of the gantry at a position that does not impede rotation of the main body frame. In this embodiment, the geared motor 24 with a brake is installed on a place 25 where the corner of the pedestal 1 rises up and becomes a high ground. One end of an interlocking arm 27 is fixed to the drive shaft 26 of the motor 24, and one end of an interlocking rod 28 is pivotally connected to the other end of the interlocking arm. The other end of the interlocking rod 28 is rotatably pivoted to a point 29 on the main body frame 3. The geared motor 24 with a brake is connected to the interlocking arm 27 within the corner indicated by the arrow 30.
It can be rotated and stopped at any position. As the interlocking arm moves, the interlocking rod 28 rotates the main body frame 3 around the support shaft 2. The main body frame 3 can be tilted forward or backward within a predetermined range of angles as shown by the arrow 31, and can be kept stationary at a desired position. Since the interlocking rod 28 applies a rotational moment to the main body frame 3, its pivot position 29 needs to be located away from the support shaft 2 so that effective rotational force can be applied to the main body frame. . The height of the stand 25, the length of the interlocking arm 27, the length of the interlocking rod 28, etc. can be easily and appropriately selected depending on the size of the main body frame.

FIG. 3 shows a state where the main body frame is tilted backward (with the mouth of the pot facing upward) and is at rest. When doing stir-frying work, tilt it like this,
Rotate the pot with the mouth raised. At this time, the axis of the cylindrical pot should be at an angle of 3° to 23° with respect to the horizontal, preferably about
Tilt the entire main body frame upward by 16 degrees. Further, when the stir-frying operation is completed and the food to be stir-fried is taken out from the pot, the entire main body frame is tilted forward, contrary to FIG. 3. By doing this, it is possible to easily take out the food to be stir-fried. It is recommended that the axis of the cylindrical pot be tilted downward at an angle of 3° to 15° with respect to the horizontal.

Next, the shape of the pot suitable for the device of the present invention will be explained. FIG. 4 is a front view showing an example of a preferable pot, and FIG. 5 is a right side view thereof. Figure 6 is the 5th
7 is a partially enlarged view of FIG. 6; FIG.

Please refer to FIGS. 4 and 5. The pot 41 is made of metal such as stainless steel, aluminum alloy, iron,
Preferably made of stainless steel. Pot 41
is composed of a generally cylindrical side wall 42 and a bottom 43 that closes one end, and a shaft 44 extends coaxially with the cylindrical body from the center of the back surface of the bottom 43. The pot 41 is rotated by a driving force applied to a shaft 44, and an arrow 45 indicates the direction of rotation. Other end of the pot 46
is open at the entrance to take in and take out the stir-fried items.

In FIGS. 4 and 6, a virtual line 47 is a line representing the basic circumference of the cylindrical body. As is clear from these figures, the side wall 42 of the pot is formed to protrude inward at two places, and has a step 48 for stirring,
48' is formed. To explain with reference to FIG. 6, which shows the outline of the cross section, parts A and C on the outer circumference of the cylinder are part of the basic circumference forming a perfect circle, and parts B and D are part of the ellipse. Department. That is, the radius of the contour is maximum at part A, but as the circumference is traced counterclockwise, it suddenly becomes smaller at the 12 o'clock position (point 49) in the drawing. This reduced radius is equal to the minor axis of the ellipse in part B. At this position, a stepped portion 48 facing the direction of rotation is formed. Subsequently, the radius gradually increases along the counterclockwise direction of the circumference until it reaches the maximum radius at the 9 o'clock position (point 50) in the drawing, which is equal to the original radius, that is, that of the section A, and continues to the section C. in the process of. The radius of the portion D also changes in the same way as the portion B, and a step portion 48' in the direction of rotation is formed between the portion C and the portion D. In this manner, the pot of this embodiment is provided with steps for stirring at two diametrically opposed locations. This step 4
8 and 48' receive the food to be stir-fried as the pot rotates, transport it, and drop it to stir and mix it. In addition, the back surface of the stepped part is composed of a smooth curved surface whose radius gradually increases as shown in parts B and D, so the oil flows smoothly as the pan rotates, and the oil is not coated on the inside of the pan. It goes everywhere. FIG. 7 is a partially enlarged view of the periphery of the stepped portion. In this embodiment, the stepped portion 48 is provided with a slightly recessed groove 51 along the axial direction of the cylindrical body. That is, the stepped portion 48 has a shape that is inclined at an angle α on the outside and an angle β on the inside with respect to the straight line 52 in the radial direction. Forming such grooves in the stepped portion has the advantage of further increasing the stirring ability. However, it is not necessary to provide such a groove in this step, and a sufficiently satisfactory stirring force can be obtained even if the step is in the shape of a flat plate. Note that the angles α and β are each preferably formed at angles of up to 30 degrees. Furthermore, although the direction of the stepped portion is normally along the radial direction (direction of the straight line 52) as in the embodiment,
It may be slightly inclined from the radial direction as shown by angle γ in FIG. The angle γ is preferably 30 degrees or less.

Steps 48, 48' formed on the side wall of the pot 41
extends substantially from the inlet 46 to the bottom 43 of the pot, as can be seen in FIG. And step part 4
The width of 8, 48' is preferably greater at the entrance portion (indicated by a) than at the bottom portion (indicated by b) and gradually decreases along the side wall toward the bottom 43. By making such a change in the width of the step, when the pot is tilted upward and rotated as explained in Fig. Stirring of nearby parts) is now performed effectively,
There is no need to provide a swing mechanism in the device. In the illustrated embodiment, the width of the step at the entrance is approximately twice as wide as that at the bottom. Now, when manufacturing a pot with a diameter in the range of 0.3 to 1.1 m, it is appropriate that the width of the step part is in the range of 25 to 300 mm.

Furthermore, a recess 53 is formed in the bottom of the pot of this embodiment. This recessed portion 53 is formed such that its outer edge 54 is located at the same position as the inner tip of the stepped portions 48, 48' or on the inner side thereof. When the pot is used as shown in Figure 3, this recess prevents the stir-fried food that falls from the side wall as the pot rotates from adhering to the bottom, making it easier to stir and mix the stir-fried food. Be effective.

For example, the device of the present invention has a diameter of 1.1 m and a depth of 1.4 m.
When using a pot of about 50 kg, the number of people
You can cook spaghetti and fried noodles for 300 to 400 people at once.

As is clear from the above description, the rotary frying device of the present invention is an excellent device that eliminates all the various drawbacks of conventional devices. In other words, the special shape of the pot and the way in which it is used not only achieves good oil flow and uniform distribution, but also allows the stir-fry to be stirred in the front and back directions without the need for a rocking mechanism. . Since there is no swinging mechanism, there is no need to provide a lid, and since there is no risk of stuffiness, there is no need for means for air intake and exhaust. In this way, unnecessary mechanisms can be omitted, resulting in a simple device with fewer failures.
Furthermore, by using a universal joint, damage to components caused by thermal expansion can be effectively prevented.

Although the present invention has been described above based on the illustrated embodiments, the scope of the present invention is not limited to the illustrated embodiments.

[Brief explanation of the drawing]

Fig. 1 is a front view of the frying device of the present invention, Fig. 2 is a side view thereof, and Fig. 3 is a side view of the frying device of the present invention, showing the body frame in an inclined state. Fourth
The figure is a front view of the pot, and Figure 5 is its side view.
FIG. 6 is an end view of a section taken along the line - in FIG. 5. FIG. 7 is a partially enlarged view of FIG. 6. DESCRIPTION OF SYMBOLS 1... Frame, 2... Support shaft, 3... Body frame, 5... Pan, 13... Universal joint, 17, 19... Wheel, 18... Drive motor, 20... Transmission chain, 21... ...Gas pipe, 2
4...Geared motor with brake, 48, 48'
...Danbe.

Claims (1)

[Claims for Utility Model Registration] 1. A pedestal, a main body frame rotatably supported by a support shaft on the pedestal, and a main body whose one end is open to form a mouth and the other end is closed to form a bottom. A cylindrical pot for stirring, which is shaped so that the radius of its cross-sectional profile suddenly decreases along the circumference and then gradually recovers to its original size, and is generally oriented in the direction of rotation of the pot. The interior wall has at least one step extending substantially from the mouth to the bottom of the pot, the step being rotatably supported within the body frame about its axis. A pot, a heating means provided on the lower side of the pot, a means for rotationally driving the pot, and a main body frame that can be freely rotated around a support shaft and kept stationary at a desired inclination angle. A rotary frying device characterized in that it consists of a means for frying. 2. A frying device according to claim 1 of the Utility Model Registration Claim, in which the stepped portions are provided at two diametrically opposed locations of a cylindrical pot. 3. A frying device as set forth in claim 1 or 2 of the utility model registration claim, wherein the generally cylindrical pot has a recessed portion at the bottom, and the outer edge of the recessed portion is formed on the inner wall of the pot. A frying device located at the same position as the inner tip or further inside. 4 Utility Model Registration The frying device according to claim 1, wherein the means for rotating the pot includes a passive wheel provided on a shaft extending coaxially with the pot from the back of the bottom of the pot, and a body frame. A frying device consisting of a drive wheel installed on the drive shaft of an electric motor, and a transmission chain or belt connecting both wheels. 5. Registration of a utility model The frying device according to claim 4, wherein the shaft extending from the back side of the bottom wall of the pot is provided with a universal joint in front of the attachment position of the passive wheel. 6 Utility Model Registration The stir frying device according to claim 1, wherein the means for rotating the main body frame around the support shaft and keeping it stationary at a desired inclination angle,
A geared motor with a brake installed on a mount, an interlocking arm with one end fixed to the drive shaft of the motor, one end rotatably pivoted to the other end of the arm, and the other end rotatable to the main body frame. It consists of a freely pivoted interlocking rod, and by rotating the interlocking arm within a certain angle range using a geared motor with a brake, the main body frame can be tilted back and forth and stopped at a desired tilt angle. A rustling frying device. 7. The frying device according to claim 1 of the Utility Model Registration Claim, wherein the outer periphery of the pot is covered with a metal net.