TWI580309B - An induction heating type processing device and method, an induction heating type food processing device and method - Google Patents

Description

Induction heating processing device and method, induction heating food processing device and method

The invention relates to an induction heating processing device, an induction heating processing method, an induction heating type food processing device, an induction heating type food processing method, a food continuous frying device, a food continuous frying method for heating and processing a workpiece by induction heating As well as food.

For example, as described in Patent Document 1, the workpiece is sandwiched between a pair of dies, and the workpiece is processed by heating the pair of dies. Further, in the processing apparatus, an induction coil is provided as a heating means on each of the pair of dies, and a pair of dies are heated by applying an alternating voltage to the induction coils.

However, since the induction coils are provided on the pair of dies and the power sources are respectively provided for the respective induction coils, there is a problem that not only the structure of the apparatus is complicated, but also the size of the apparatus is increased.

Further, although it is also conceivable to provide an induction coil only on one mold, and to heat the other mold and the other mold, in this case, there is a problem that temperature unevenness occurs between one mold and the other mold. The amount of heat applied to the workpiece becomes unbalanced, and the heating efficiency of the workpiece is deteriorated, which in turn causes a decrease in processing efficiency.

Prior art literature

Patent literature

Patent Document 1: Japanese Patent Laid-Open Publication No. 2004-322323

Therefore, in order to solve the above problems, it is a primary object of the present invention to provide an induction heating type processing apparatus which is simplified in structure, does not increase in size, and has excellent heating efficiency, and can simultaneously apply heat to both sides of a workpiece. .

That is, the present invention provides an induction heating type processing apparatus comprising: a non-magnetic metal member and a magnetic metal member disposed in such a manner as to sandwich a workpiece; and an induction coil disposed at a position relative to the non-magnetic metal member On the opposite side of the magnetic metal member, magnetic flux generated by the induction coil penetrates the non-magnetic metal member and passes through the inside of the magnetic metal member, whereby the non-magnetic metal member and the magnetic metal member are heating.

In addition, the present invention provides an induction heating type processing method in which a non-magnetic metal member and a magnetic metal member are disposed in such a manner as to sandwich a workpiece, and an induction coil is disposed opposite to the magnetic metal member with respect to the non-magnetic metal member. One side of the non-magnetic metal member and the magnetic metal member are heated by passing a magnetic flux generated by the induction coil through the non-magnetic metal member and passing through the inside of the magnetic metal member, thereby The workpiece is processed.

According to the above arrangement, since the workpiece is sandwiched between the non-magnetic metal member and the magnetic metal member, the induction coil is disposed on the opposite side of the magnetic metal member from the non-magnetic metal member to cause the magnetic force generated by the induction coil. The non-magnetic metal member is passed through, so that the non-magnetic metal member can be heated. Further, since the magnetic flux generated by the induction coil passes through the inside of the magnetic metal member after passing through the non-magnetic metal member, the magnetic metal member can be heated. Thereby, the workpiece can be heated by the non-magnetic metal member and the magnetic metal member. Further, since the induction coil can be provided only on the side of the non-magnetic metal member, the structure of the device can be simplified, and the size of the device is not increased, and the opening, closing, attachment and detachment of the magnetic metal member that is in close contact with the non-magnetic metal member is simplified. It is easy to take out or put in the workpiece. In addition, due to the use of induction heating for non-magnetic metal parts and magnetic metal parts Heating, so the heating efficiency is high, and the operability is not impaired.

Specifically, it is conceivable that the non-magnetic metal member and the magnetic metal member are a lower mold and an upper mold, respectively. In this case, the induction coil is disposed below the lower mold. In order to properly heat the lower mold, it is preferable that the surface of the lower mold facing the induction coil is substantially planar, so that the magnetic flux generated by the induction coil penetrates the lower mold substantially vertically.

Here, since the current flowing through the induction coil is opposite to the direction of the induced current generated in the non-magnetic metal member and the magnetic metal member, mutual repulsive force (repulsive force) acts, and sometimes the magnetic metal member accidentally falls off. The problem. In order to solve this problem, it is preferable that the magnetic circuit iron core is provided at a central portion of the induction coil. By providing the magnetic core for the magnetic circuit in the central portion of the induction coil, magnetic flux in the same direction flows in the thickness direction of the magnetic core and the magnetic metal member, so that a mutual attraction force (attraction force) occurs. Therefore, a large repulsive force does not act as a resultant force between the induction coil, the non-magnetic metal member, and the magnetic metal member, so that the magnetic metal member can be prevented from accidentally falling off.

Preferably, a magnetic flux path forming member is provided, the magnetic flux path forming member covering an outer circumferential surface of the induction coil and a surface of the induction coil opposite to the non-magnetic metal member, forming a The magnetic flux path through which the magnetic flux generated by the induction coil passes. According to this aspect, the magnetic circuit is formed such that the magnetic flux generated by the induction coil penetrates the non-magnetic metal member, reaches the magnetic metal member, passes through the inside of the magnetic metal member, and flows into the magnetic flux path forming member. As a result, the magnetic flux generated by the induction coil can be efficiently guided to the non-magnetic metal member and the magnetic metal member.

Preferably, the non-magnetic metal member is supported by the magnetic flux path forming member. According to this aspect, the structure for supporting the non-magnetic metal member can be constituted by the magnetic flux path forming member, and the device structure can be simplified.

Further, it is preferable that the magnetic flux path forming member is in contact with the magnetic metal member. According to this aspect, the magnetic flux easily flows from the magnetic metal member to the magnetic flux path forming member, and the magnetic resistance can be reduced.

Preferably, a non-magnetic metal body is closely attached to the magnetic metal member on a side of the non-magnetic metal member with respect to the magnetic metal member. Thus, if the non-magnetic metal body is placed close to the inner side of the magnetic metal member, the induced current flows in the non-magnetic metal body to generate heat, and the structural member composed of the non-magnetic metal body and the magnetic metal member which are closely disposed can be formed. The temperature of the (upper mold) rises. Further, by selecting the resistivity and thickness of the closely-contacted non-magnetic metal body, the temperature rise value of the upper mold can be adjusted. Further, the non-magnetic metal body is, for example, non-magnetic stainless steel, copper or the like.

Preferably, with respect to the non-magnetic metal member, on a side opposite to the magnetic metal member, a non-magnetic body having a lower resistivity than the non-magnetic metal member is closely disposed on the non-magnetic metal member. Or a non-magnetic body having a lower specific resistance than the non-magnetic metal member is disposed on the non-magnetic metal member through a heat conducting member. According to this aspect, in the case where local temperature unevenness occurs in the non-magnetic metal member, if the non-magnetic material having a lower specific resistance than the non-magnetic metal member is disposed at a portion where the temperature is relatively low, the induced current becomes at the arrangement portion. It is easy to flow, heat is increased, and temperature is raised, so temperature unevenness can be eliminated. Further, the low-resistivity non-magnetic material may be disposed in close contact with the non-magnetic metal member, or may be disposed on the non-magnetic metal member through the heat-conducting member.

Since the induction coil is disposed on the outer side of the non-magnetic metal member side, the amount of heat radiation from the non-magnetic metal member is small, but the outer side of the magnetic metal member side is open, and the heat dissipation from the magnetic metal member is large, and the magnetic metal member becomes high temperature. The rate of temperature rise is reduced. In order to solve the problem, it is preferable that the heat insulating member is disposed on a side opposite to the non-magnetic metal member with respect to the magnetic metal member.

Here, in the case where the frequency of the alternating voltage applied to the induction coil is a low frequency of less than 50 Hz, the non-magnetic metal member is hardly heated, and the magnetic flux density of the magnetic metal member becomes too high to be saturated. On the other hand, in the case where the frequency is a high frequency exceeding 1000 Hz, the non-magnetic metal member is excessively heated, and the temperature becomes too high as compared with the magnetic metal member. Therefore, it is preferably applied to the induction coil The frequency of the alternating voltage is 50 Hz to 1000 Hz, and the heat generation ratio of the non-magnetic metal member and the magnetic metal member is controlled by the frequency. .

In addition, the non-magnetic metal member has a high current permeability and is heated both inside and outside. On the other hand, since it is a magnetic metal member, the current permeability is about 2 mm at a frequency of 500 Hz and a temperature of 300 ° C, and the inner surface that is in contact with the workpiece is heated, so that the workpiece can be efficiently processed. .

Further, it is preferable that the power source for applying an alternating voltage to the induction coil is a transformer-type 3N frequency multiplier generator, wherein N is an odd number of 1 or more. Here, the 3N frequency multiplier generates an intermediate frequency of 150 Hz, 450 Hz, and 750 Hz when the commercial power supply frequency is 50 Hz, and outputs an intermediate frequency of 180 Hz, 540 Hz, and 900 Hz when the commercial power supply frequency is 60 Hz. In addition, it is conceivable to use a general-purpose inverter. If the output voltage is V and the output frequency is F, the general-purpose inverter is usually configured to change with V/F as a fixed value. Therefore, if the load temperature is controlled by the increase/decrease output, the frequency always changes with the change of the voltage, and the non-magnetic metal member and the magnetic metal member vibrate as the frequency changes. On the other hand, the 3N frequency doubling generator of the transformer type always has a constant frequency, and is a control method that only changes the output voltage. The vibration caused by the frequency variation of the non-magnetic metal parts and the magnetic metal parts is small, and the processing does not occur. Bad influence.

In addition, the present invention also provides an induction heating processing method, in which a non-magnetic metal member and a magnetic metal member are disposed in such a manner as to sandwich a workpiece, and an induction coil is disposed on the magnetic metal member with respect to the non-magnetic metal member. On the opposite side, the magnetic flux generated by the induction coil is passed through the non-magnetic metal member and passed through the inside of the magnetic metal member to heat the non-magnetic metal member and the magnetic metal member, thereby The workpiece is processed.

Further, in the induction heating type processing method, preferably, the frequency of the alternating voltage applied to the induction coil is 50 Hz to 1000 Hz, and the non-magnetic metal member and the The heat ratio of magnetic metal parts.

In addition, in the past, processed foods such as frozen foods were processed in the processed foods. In the case where the food having a grill pattern is processed on both sides, for example, one surface is brought into contact with the heating surface of the cooking utensil such as a pan to perform grilling, and then the food is turned over and the other surface is brought into contact with the heating surface for grilling.

In the case where the food is grilled one by one as described above, the time for grilling each single side is required, the processing time becomes long, and the processing efficiency is not good. The problem becomes more pronounced as the amount of processed food produced increases.

Further, as shown in the patent document (Japanese Laid-Open Patent Publication No. 2005-246052), a food processing apparatus is disclosed in which a heating device such as a heater is provided on both the upper side and the lower side of the food, and both sides of the food are grilled. .

However, if the heating device is provided on both the upper side and the lower side of the food, there is a problem that not only the food heating device is increased in size, but also the heating efficiency is deteriorated, the ambient temperature is increased, and the workability is adversely affected.

In addition, conventionally, as a heating method for industrially large-scale, continuous fried noodles or rice, a gas heating method, an eddy current heating method, a superheated steam method, or the like is used.

Although the gas heating method has the advantages of high heating speed and low cost, it can not get rid of the following problems: burnt due to forgetting to close; gas extinguishing due to use of small fire, gas poisoning due to leakage of equipment, The danger of explosion. Although there is no danger of gas poisoning and explosion, the eddy current heating method has the disadvantages of slow heating rate and high unit power consumption. Although the superheated steam method is excellent in electric heat, it is an excellent heating method, but there is a possibility of noise and equipment damage due to steam hammer, and possibility of damage due to corrosion or freezing of piping and equipment, in large-scale food manufacturing equipment. There are security and maintenance shortcomings in use.

Further, it is difficult to strictly control the heating temperature or the heating depth even with any of the methods described.

On the other hand, in recent years, home heating cooking appliances using a high-frequency induction heating method have been widely used (for example, refer to Japanese Patent Laid-Open No. 3446507). The method does not use an open flame and heats the cooking appliance itself, so the safety is good and the energy efficiency is high.

However, large-scale high-frequency induction heating devices used in large-scale industrial food manufacturing equipment require special equipment and power supplies to be ordered together with the equipment, which is very expensive. Further, in the high-frequency induction heating method, the penetration depth of heat is about several micrometers of the wall of the appliance, and it is difficult to use it for a thick cooking utensil used in industrial food production. Further, in the case of using a high-frequency induction heating device, the distance between the device main body and the power source cannot be increased due to the problem of power loss. This is a fatal disadvantage in a food manufacturing plant having a complicated production line that requires re-setting according to the product and using a large amount of water, and thus has not been used for large-scale food manufacturing equipment.

Therefore, the present invention provides an induction heating type food processing apparatus which does not increase the size of the apparatus, has high heating efficiency, does not impair operability, can be cooked in a large amount and is continuously cooked, and can prevent uneven heating, material damage, charring, and The heat can be applied to both sides of the food at the same time, and the safety is high, and the maintenance and management of the equipment is easy. The induction heating type food processing apparatus includes an induction heating type food processing apparatus including a first container member made of a conductive non-magnetic material and a second container member made of a magnetic material, a container part and the second container part form a food receiving space, the food receiving space housing the heated food; and an induction coil disposed opposite to the second container part with respect to the first container part a side, a magnetic flux generated by the induction coil penetrates a wall of the first container part opposite to the induction coil, and passes through an interior of the second container part, whereby the first container part and the The second container part is heated.

Further, the present invention provides the food continuous frying device comprising: a first container part composed of a conductive non-magnetic body and a second container part composed of a magnetic body, the first container part and the second The container member forms a food receiving space, the food receiving space receives the heated food; and the induction coil is disposed on a side opposite to the second container member with respect to the first container member, and is generated by the induction coil The magnetic flux passes through a wall of the first container part opposite the induction coil and through the interior of the second container part, whereby the first container part and the second container part are heated.

Further, the present invention provides an induction heating type food processing method in which a food container is housed in a food accommodating space, and a first container member made of a conductive non-magnetic material and a second container member made of a magnetic material form the food accommodating space. Providing an induction coil on a side opposite to the second container member with respect to the first container member, by causing a magnetic flux generated by the induction coil to pass through the first container member opposite to the induction coil The first container part and the second container part are heated by the wall and through the interior of the second container part, thereby processing the food product.

According to the above aspect, the food is housed in a food accommodating space formed of a first container member made of a conductive non-magnetic material and a second container member made of a magnetic material, and the induction coil is disposed relative to the first container member. On the opposite side of the second container member, the magnetic flux generated by the induction coil penetrates the first container member of the conductive non-magnetic body, so that the first container member can be heated. Further, since the magnetic flux generated by the induction coil passes through the inside of the second container member of the magnetic body after penetrating the first container member, the second container member can be heated. Thereby, the foodstuff accommodated in the foodstuff accommodation space can be heated by the 1st container member and the 2nd container member. Further, since the induction coil can be provided only on the side of the first container member, the size of the apparatus is not increased, and the opening and closing and attachment and detachment of the lid can be simplified, so that it is easy to take out or put in food. Further, since the first container member and the second container member are heated by induction heating, the heating efficiency is high and the operability is not impaired. In addition to this, not only can a large amount of cooking and continuous cooking, but also uneven heating can be prevented, and material damage and charring can be prevented. Thereby, the texture, flavor, and appearance of the food can be improved, and productivity can be improved.

Further, the present invention can apply the induction heating method using the intermediate frequency to the large-scale continuous food heating device, and can control the heating temperature and the heating depth with high precision, and can selectively, strongly, and briefly perform the target food. heating. Induction heating is caused by the use of an intermediate frequency, so that the penetration depth of heat can be deepened to about 10 mm, and thus it is possible to cope with a thick cooking utensil used in food manufacturing.

In addition, compared with the high frequency, the power loss in the intermediate frequency case is small, so the distance from the power source can be increased. Thereby, it is possible to maintain the advantages of the induction heating method, such as high heating control precision, good safety, high energy efficiency, and can be used as a device that can be used in a food manufacturing field.

Further, by continuously heating the food to be selectively heated in a short period of time, it is possible to prevent uneven heating and scorching, to simplify the cooling process after heating, and to reduce the load on the freezing apparatus, and to shorten the time-consuming heating and cooling process, and to Amplitude increases productivity. By heating only the required portion for a short period of time, it is possible to prevent excess heat loss caused by excess heat to be radiated to the surroundings and the deterioration of the working environment, thereby reducing the energy used.

Further, in the case where the food is heated and cooked using the present invention, it is possible to prevent the loss of the flavor component to the outside of the food and the deterioration due to the residual heat, and it is possible to provide a high-grade food which imparts an ideal barbecue pattern and a barbecue odor to the target food.

Specifically, it is preferable that the first container member is a food container having an opening portion, the opening portion is open upward, the second container member is a lid body, and the lid body closes the food container The opening portion. In this case, the induction coil is disposed below the bottom wall of the food container. Further, in order to properly heat the bottom wall of the food container, it is preferable that the wall of the bottom wall of the food container facing the induction coil is substantially in the shape of a flat plate, and the magnetic flux generated by the induction coil extends substantially perpendicularly through the food container.

Here, since the current flowing through the induction coil and the induced current generated in the first container member and the second container member are opposite to each other, mutually repulsive force (repulsive force) acts, and sometimes the second container member is accidentally detached. problem. In order to solve the above problem, it is preferable that the core for the magnetic circuit is provided at the central portion of the induction coil. By providing a magnetic core for the magnetic circuit in the center portion of the induction coil, the magnetic flux core and the second container member flow in the same direction in the thickness direction, so that a mutual attraction force (attraction force) occurs. Therefore, a large repulsive force is not applied as a resultant force between the induction coil and the first container member and the second container member, and the second container member can be prevented from accidentally falling off.

Preferably, a magnetic flux path forming member composed of a magnetic body is provided, The magnetic flux path forming member covers an outer circumferential surface of the induction coil and a surface of the induction coil opposite to the first container member to form a magnetic flux path through which magnetic flux generated by the induction coil passes. According to this aspect, the magnetic circuit is formed such that the magnetic flux generated by the induction coil penetrates the first container member, passes through the food accommodating space to reach the second container member, and passes through the inside of the second container member, and flows to the magnetic flux path. member. As a result, the magnetic flux generated by the induction coil can be efficiently guided to the first container part and the second container part.

Preferably, the first container member is supported by the magnetic flux path forming member. According to this aspect, the structure for supporting the first container member can be constituted by the magnetic flux path forming member, and the device structure can be simplified.

Preferably, the conductive non-magnetic body is placed in close contact with the second container member on the first container member side with respect to the second container member. When the conductive non-magnetic material is placed in close contact with the inside of the second container member, the induced current flows in the conductive non-magnetic material to generate heat, and the conductive non-magnetic body and the magnetic body which are provided in close contact with each other can be formed. The temperature of the second container part rises. Further, by selecting the resistivity and thickness of the closely-contacted conductive non-magnetic material, the temperature rise value of the second container member can be adjusted. Further, the conductive non-magnetic material is, for example, non-magnetic stainless steel, copper or the like.

Preferably, with respect to the first container part, a non-magnetic body having a lower resistivity than the first container part is disposed on the first container part on a side opposite to the second container part Or a non-magnetic body having a lower resistivity than the first container member is disposed on the first container member by a heat conducting member. According to this aspect, in the case where local temperature unevenness occurs in the first container member, if a non-magnetic material having a lower resistivity than the first container member is disposed at a portion where the temperature of the first container member is relatively low, the induced current The distribution portion becomes easy to flow, the amount of heat generation increases, and the temperature rises, so that temperature unevenness can be eliminated. Further, the non-magnetic material having a low specific resistance may be disposed in close contact with the first container member or may be disposed on the first container member by the heat conduction member.

Since the induction coil is provided on the outer side of the first container member side, the amount of heat radiation from the first container member is small, the outer side of the second container member side is open, and the amount of heat dissipation from the second container member is large, with the second container The part becomes high temperature and the temperature rise rate is lowered. In order to solve the problem, it is preferable that the heat insulating member is disposed on a side opposite to the first container member with respect to the second container member.

Here, in the case where the frequency of the alternating voltage applied to the induction coil is a low frequency of less than 50 Hz, the first container member composed of the non-magnetic material is difficult to be heated, and further, the magnetic flux density of the second container member is too high. And saturated. On the other hand, when the frequency is a high frequency exceeding 1000 Hz, the first container member made of a non-magnetic material is excessively heated, and the temperature is too high as compared with the second container member. Therefore, it is preferable that the frequency of the alternating voltage applied to the induction coil is 50 Hz to 1000 Hz, and the heat generation ratio of the first container member and the second container member is controlled by the frequency.

Further, since the first container member is a non-magnetic body, the current permeability is high, and both the inside and the outside are heated. On the other hand, since the second container member is a magnetic body, the current permeability is about 2 mm at a frequency of 500 Hz and a temperature of 300 ° C, and the efficiency of the food processing is improved because the inner surface in contact with the food is heated. high.

Further, it is preferable that the power source for applying an alternating voltage to the induction coil is a transformer-type 3N frequency multiplier generator, wherein N is an odd number of 1 or more. Here, the 3N frequency multiplier generates an intermediate frequency of 150 Hz, 450 Hz, and 750 Hz when the commercial power supply frequency is 50 Hz, and outputs an intermediate frequency of 180 Hz, 540 Hz, and 900 Hz when the commercial power supply frequency is 60 Hz. In addition, although it is conceivable to use a general-purpose inverter, when the output voltage is V and the output frequency is F, the general-purpose inverter is usually changed in such a manner that V/F is a fixed value. Therefore, if the load temperature is controlled by increasing or decreasing the output, the frequency always changes with the change of the voltage, and the first container part and the second container part generate severe vibration as the frequency changes. On the other hand, the transformer-type 3N multiplier generator always has a constant frequency, and is a control method that changes only the output voltage, and the vibration of the first container part and the second container part due to frequency fluctuations. Small, the adverse effects on food processing are small.

Further, the present invention provides a food continuous frying method which is subjected to heat treatment using the food frying device. The effect described can be exerted in the method of frying the food.

Further, the present invention provides a food produced by a method having a heat treatment step using the food continuous frying method. As the food, for example, noodles, rice, and the like can be considered.

According to the present invention having the above configuration, it is possible to provide an induction heating type processing apparatus which can increase the heating efficiency without impairing the operability and can simultaneously apply heat to both sides of the workpiece without increasing the size of the apparatus.

Further, according to the present invention having the above configuration, it is possible to provide a food processing apparatus which does not increase the size of the apparatus, has high heating efficiency, does not impair operability, can be cooked in a large amount and is continuously cooked, and can prevent uneven heating, material damage, charring. It can apply heat to both sides of the food at the same time, with high safety and easy maintenance of the equipment.

1‧‧‧Induction heating processing device

2‧‧‧ Lower mold (non-magnetic metal parts)

3‧‧‧Upper mold (magnetic metal parts)

4‧‧‧Induction coil

5‧‧‧Magnetic core

6‧‧‧Magnetic path forming member

7‧‧‧ fixing screws

8‧‧‧Insulation components

9‧‧‧Insulation components

61‧‧‧Support

62‧‧‧Non-magnetic body

W‧‧‧Processed objects

2H‧‧‧ openings

S‧‧‧Food accommodating space

100‧‧‧Induction heating food processing equipment

200‧‧‧Food Container (First Container Parts)

210‧‧‧ Housing Department

220‧‧‧ wall opposite the induction coil (bottom wall)

230‧‧‧ cover placement

240‧‧‧Non-magnetic body

300‧‧‧ cover (second container part)

400‧‧‧Induction coil

500‧‧‧Magnetic core

600‧‧‧Magnetic path forming member

700‧‧‧ fixing screws

800‧‧‧Insulation components

900‧‧‧Insulation components

Fig. 1 is a cross-sectional view schematically showing the structure of an induction heating type machining apparatus according to a first embodiment.

Fig. 2 is a cross-sectional view schematically showing the structure of an induction heating type food processing apparatus according to a second embodiment.

Fig. 3 is a view showing the results of induction heating test in the case where the pan weight: the cover weight = 1:1.045, the frequency is 150 Hz, and there is no heat insulating member.

Fig. 4 is a view showing the results of induction heating test in the case where the pan weight: the cover weight = 1:1.045, the frequency is 150 Hz, and the heat insulating member is provided.

Fig. 5 is a view showing the results of induction heating test in the case where the pan weight: the cover weight = 1:1.451, the frequency is 450 Hz, and there is no heat insulating member.

Fig. 6 is a view showing the results of induction heating test in the case where the pan weight: cover weight = 1:1.451, frequency is 150 Hz, and there is no heat insulating member.

Fig. 7 is a view showing the results of induction heating test in the case where the pan weight: the cover weight = 1:2.746, the frequency is 150 Hz, and there is no heat insulating member.

8 is a cross-sectional view schematically showing the configuration of an induction heating type processing apparatus according to a modification of the first embodiment.

Fig. 9 is a cross-sectional view schematically showing a configuration of an induction heating type food processing apparatus according to a modification of the second embodiment.

<First embodiment>

A first embodiment of the induction heating type processing apparatus of the present invention will now be described with reference to the accompanying drawings.

The induction heating type processing apparatus 1 of the present embodiment applies heat to the workpiece W to process the workpiece W. As shown in FIG. 1, the induction heating type processing apparatus 1 includes a non-magnetic metal member 2 and a magnetic metal member 3. The inductor W is disposed so as to sandwich the workpiece W, and the induction coil 4 is disposed on the opposite side of the magnetic metal member 3 with respect to the non-magnetic metal member 2. Further, in Fig. 1, for convenience, there is a portion which is shown in a state in which the members are separated.

The non-magnetic metal member 2 and the magnetic metal member 3 of the present embodiment are a pair of lower molds and upper molds, and concave and convex shapes conforming to the processed shape of the workpiece W are formed on the opposite surfaces thereof. By superposing the non-magnetic metal member 2 and the magnetic metal member 3 described above, a housing space for accommodating the workpiece W is formed inside. Further, in order to attach and detach the workpiece W, the magnetic metal member 3 as the upper mold can be moved.

The induction coil 4 is substantially cylindrical and disposed under the non-magnetic metal member 2. That is, the induction coil 4 is disposed on the opposite side of the magnetic metal member 3 with respect to the non-magnetic metal member 2. Further, the outer diameter of the induction coil 4 is substantially the same as the outer diameter of the non-magnetic metal member 2, and is at least larger than the width dimension of the workpiece W. Further, the central axis of rotation of the induction coil 4 is disposed to substantially coincide with the central axis of the non-magnetic metal member 2. The magnetic flux generated by the induction coil 4 provided as described above penetrates the non-magnetic metal member 2 so as to be substantially perpendicular to the lower surface of the non-magnetic metal member 2. Further, the surface of the non-magnetic metal member 2 facing the induction coil 4 (the entire lower surface in the present embodiment) is substantially planar. Further, in the hollow portion formed in the center of the induction coil 4, A magnetic core 5 is provided.

A magnetic flux path forming member 6 is provided around the induction coil 4.

The magnetic flux path forming member 6 accommodates the induction coil 4 and the magnetic circuit core 5, and forms a magnetic path around the induction coil 4. The magnetic flux path forming member 6 covers the outer circumferential surface of the induction coil 4 and the lower surface of the induction coil 4 (the surface opposite to the non-magnetic metal member 2), and has a shape of a substantially bottomed cylinder having an opening at the upper portion. . Further, the magnetic flux path forming member 6 is formed of a magnetic metal.

Further, the induction coil 4 is placed on the bottom wall of the magnetic flux path forming member 6, and the magnetic circuit core 5 is disposed at the central portion of the induction coil 4. The magnetic circuit core 5 is fixedly coupled to the bottom wall of the magnetic flux path forming member 6 by a fixing screw 7.

Further, inside the magnetic flux path forming member 6, a flat plate-shaped insulating heat insulating member 8 is provided on the upper surface of the induction coil 4. By providing the insulating heat insulating member 8, no short circuit occurs between the induction coil 4 and the magnetic circuit iron core 5, and the non-magnetic metal member 2, and heat dissipation from the non-magnetic metal member 2 is suppressed without being derived from the non-magnetic material. The heat transfer of the metal member 2 causes the induction coil 4 and the magnetic circuit core 5 to be heated.

Further, the magnetic flux path forming member 6 supports the non-magnetic metal member 2, and a support portion 61 for supporting the non-magnetic metal member 2 is formed on the inner surface of the magnetic flux path forming member 6. The support portion 61 is supported by the surface of the lower side of the non-magnetic metal member 2 to support the non-magnetic metal member 2, and the support portion 61 may be formed along the entire circumference on the inner surface of the magnetic flux path forming member 6, or may be formed. The inner side surface is intermittently formed in the circumferential direction. Further, in a state where the non-magnetic metal member 2 is supported on the support portion 61 of the magnetic flux path forming member 6, the lower surface of the non-magnetic metal member 2 is in contact with the insulating heat insulating member 8.

Further, the upper end surface of the magnetic flux path forming member 6 is in contact with the surface on the lower side of the magnetic metal member 3 superposed on the non-magnetic metal member 2. That is, the upper end surface of the magnetic flux path forming member 6 is in contact with the lower surface of the surface of the magnetic metal member 3 which is superposed on the non-magnetic metal member 2, which is protruded outward from the non-magnetic metal member 2. Thereby, the magnetic flux passing through the inside of the magnetic metal member 3 easily flows in the magnetic flux path forming member 6, and this The magnetic reluctance at this time can be reduced.

Further, in the present embodiment, in order to prevent heat generation of the magnetic flux path forming member 6 due to the short-circuit current flowing in the circumferential direction in the magnetic flux path forming member 6, the magnetic flux path forming member 6 is formed in the direction in which the magnetic flux flows. There is a slit for preventing short-circuit current (not shown). In addition, in order to prevent heat generation of the magnetic flux path forming member 6, the magnetic flux path forming member 6 may be formed by laminating magnetic sheets of an insulating sheet such as a silicon steel.

Further, a heat insulating member 9 is provided in contact with the upper surface of the magnetic metal member 3 so that heat generated by the magnetic metal member 3 does not dissipate heat from the upper surface of the magnetic metal member 3. Since the heat insulating member 9 is provided as described above, it is possible to prevent a decrease in the temperature increase rate of the magnetic metal member 3 in the high temperature region due to the opening of the upper portion of the magnetic metal member 3.

Next, the magnetic flux generated by the induction coil 4 and the simultaneous heating of the non-magnetic metal member 2 and the magnetic metal member 3 will be described.

A magnetic flux is generated by applying an alternating voltage to the induction coil 4. The magnetic flux penetrates the non-magnetic metal member 2 substantially perpendicularly through the magnetic circuit core 5 . At this time, an induced current is generated in the non-magnetic metal member 2, and the non-magnetic metal member 2 generates Joule heat. The magnetic flux that has passed through the non-magnetic metal member 2 passes through the housing space of the workpiece W. The magnetic flux then reaches the magnetic metal member 3, and flows inside the magnetic metal member 3 from the central portion to the outside. At this time, an induced current is generated in the magnetic metal member 3, and the magnetic metal member 3 generates Joule heat. The magnetic flux passing through the inside of the magnetic metal member 3 flows to the magnetic flux path forming member 6 at the peripheral edge portion of the magnetic metal member 3. The magnetic flux that has reached the magnetic flux path forming member 6 passes through the inside of the magnetic flux path forming member 6 and flows to the magnetic circuit core 5 . The magnetic flux generated by the induction coil 4 circulates in the described path. In the case where the magnetic flux is in the opposite direction, the path becomes the opposite direction.

Further, in the present embodiment, since the magnetic circuit core 5 is provided in the hollow portion of the induction coil 4, the current flowing in the induction coil 4 and the current generated in the non-magnetic metal member 2 and the magnetic metal member 3 are generated. The induced current is in the opposite direction, so the effect is Mutually repulsive forces (repulsion forces), but magnetic fluxes in the same direction flow in the thickness direction of the magnetic circuit core 5 and the magnetic metal members 3, so that mutual attraction forces (attractive forces) occur. Therefore, a large repulsive force does not act as a resultant force between the induction coil 4 and the non-magnetic metal member 2 and the magnetic metal member 3, so that the magnetic metal member 3 can be prevented from accidentally falling off.

In the present embodiment, a power source (not shown) for applying an alternating current voltage to the induction coil 4 applies an alternating current voltage having a frequency of 50 Hz to 1000 Hz to the induction coil 4. In the present embodiment, the power source is 3N of a transformer type (N is 1 or more odd number) multiplier generator. Further, the heat generation ratio of the non-magnetic metal member 2 and the magnetic metal member 3 is controlled by adjusting the frequency using the 3N frequency multiplier generator. For example, the frequency can be adjusted so that the temperature rising characteristics of the non-magnetic metal member 2 and the magnetic metal member 3 are the same, and the frequency can be adjusted so that the temperatures of the non-magnetic metal member 2 and the magnetic metal member 3 become the same. Further, the structure of the 3N frequency doubling generator can be considered, for example, in a configuration in which the primary windings Y of the three sets of single-phase transformers are connected, and the secondary winding Δ is connected such that one end of the Δ connection is opened from the open portion. Remove the harmonic components.

According to the induction heating type processing apparatus 1 of the present embodiment configured as described above, the workpiece W is housed in a housing space formed by the non-magnetic metal member 2 and the magnetic metal member 3, and is disposed below the non-magnetic metal member 2 The induction coil 4 penetrates the magnetic flux generated by the induction coil 4 through the non-magnetic metal member 2, so that the non-magnetic metal member 2 can be heated. Further, the magnetic flux generated by the induction coil 4 passes through the inside of the magnetic metal member 3 after passing through the non-magnetic metal member 2, so that the magnetic metal member 3 can be heated. Thereby, the workpiece W can be heated by the non-magnetic metal member 2 and the magnetic metal member 3. Further, since the induction coil 4 is provided only on the side of the non-magnetic metal member 2, the structure of the apparatus is simplified, and the apparatus is not enlarged. Further, since the non-magnetic metal member 2 and the magnetic metal member 3 are heated by induction heating, the heating efficiency is high, the ambient temperature is hard to be high, and the operability is not impaired.

<Second Embodiment>

Embodiments of the induction heating type food processing apparatus of the present invention will now be described with reference to the accompanying drawings. The formula is explained.

In the induction heating type food processing apparatus 100 of the present embodiment, for example, the food is applied to the food by frying or grilling the food such as noodles or rice, and the food is processed by the induction heating type food processing apparatus 100 as shown in Fig. 2 . The food accommodating space S of the heated food, the induction heating type food processing apparatus 100 includes a first container part 200 composed of a conductive non-magnetic body (non-magnetic metal) and a second container part composed of a magnetic body (magnetic metal) 300. The induction coil 400 is disposed on a side opposite to the second container part 300 with respect to the first container part 200.

The first container member 200 of the present embodiment has an opening 2H at the upper portion thereof, and is a food container having a housing portion 210 for accommodating food therein. The food container 200 is generally in the shape of a rotating body, and the bottom wall 220 of the food container 200 is substantially in the shape of a flat plate.

Further, the second container member 300 of the present embodiment is a lid that closes the opening portion 2H of the food container 200 and has a substantially flat plate shape. By closing the opening 2H of the food container 200 with the lid 300, the food accommodating space S is formed by the inner surface of the accommodating portion 210 of the food container 200 and the lower surface of the lid 300.

The induction coil 400 is generally cylindrical and disposed below the bottom wall 220 of the food container 200 as the first container component. That is, the induction coil 400 is disposed on the opposite side of the lid 300 with respect to the food container 200. Further, the outer diameter of the induction coil 400 is substantially the same as the outer diameter of the housing portion 210 of the food container 200, and the central axis of rotation of the induction coil 400 is disposed to substantially coincide with the central axis of the food container 200. The magnetic flux generated by the induction coil 400 provided as described above penetrates the food container 200 in a manner substantially perpendicular to the bottom wall 220 of the food container 200. Further, a magnetic circuit core 500 is provided in a hollow portion formed in the center of the induction coil.

Further, a lid placing portion 230 for placing the lid 300 is formed at a peripheral edge portion of the opening portion 2H forming the food container 200. The lid placing portion 230 has a flange shape that protrudes radially outward from a peripheral edge portion of the housing portion 210. Further, the magnetic flux path forming member 600 is in contact with the surface on the lower side of the lid placement portion 230.

The magnetic flux path forming member 600 houses the induction coil 400 and the magnetic circuit core 500, and forms a magnetic path around the induction coil 400. The magnetic flux path forming member 600 covers the outer circumferential surface of the induction coil 400 and the lower surface of the induction coil 400 (the surface opposite to the food container 200), and has a substantially bottomed cylindrical shape with an opening at the upper portion. Further, the magnetic flux path forming member 600 is formed of a magnetic body.

Further, the induction coil 400 is placed on the bottom wall of the magnetic flux path forming member 600, and the magnetic circuit core 500 is disposed at the central portion of the induction coil 400. The magnetic circuit core 500 is fixedly coupled to the bottom wall of the magnetic flux path forming member 600 by a fixing screw 700.

Further, inside the magnetic flux path forming member 600, a flat plate-shaped insulating heat insulating member 800 is provided on the upper surface of the induction coil 400. By providing the insulating heat insulating member 800, it is possible to prevent short-circuiting between the induction coil 400 and the magnetic circuit iron core 500 and the food container 200, and it is possible to suppress heat dissipation from the food container 200 without being caused by the food container 200. The heat transfer causes the induction coil 400 and the magnetic circuit core 500 to be heated.

Further, the magnetic flux path forming member 600 supports the food container 200, and the food container 200 is supported by bringing the upper end surface of the magnetic flux path forming member 600 into contact with the surface on the lower side of the lid placing portion 230 of the food container 200. Further, in a state where the food container 200 is supported on the magnetic flux path forming member 600, the bottom wall 220 of the food container 200 is in contact with the insulating heat insulating member 800. Thus, the food container 200 is also supported by the insulating heat insulating member 800.

Further, in the present embodiment, in order to prevent the magnetic flux path forming member 600 from being heated by the short-circuit current flowing in the circumferential direction in the magnetic flux path forming member 600, the magnetic flux path forming member 600 is formed along the direction in which the magnetic flux flows. A slit for preventing short-circuit current (not shown). In addition, in order to prevent heat generation of the magnetic flux path forming member 600, the magnetic flux path forming member 600 may be formed by laminating magnetic sheets such as annealed steel sheets.

In addition, in order to prevent the heat generated by the cover 300 from being from the upper side of the cover 300 The surface is dissipated, and a heat insulating member 900 is provided in contact with the upper surface of the lid 300. Since the heat insulating member 900 is provided as described above, it is possible to prevent the temperature increase rate of the lid 300 generated in the high temperature region due to the opening of the upper portion of the lid 300 from being lowered.

The results of the induction heating test of the food processing apparatus 100 of the present embodiment are shown below.

3 shows that the pan is a SUS304 having a thickness of 1.5 mm, the cover is a SS400 having a thickness of 2.3 mm, and the distance between the bottom surface of the pan and the lower surface of the lid (hereinafter referred to as a gap) is 17 mm, and the flat bottom is shown. When the weight ratio of the pan and the lid is 1:1.045, the frequency of the alternating voltage is 150 Hz, and the temperature rise characteristics of the pan and the lid are tested when the heat insulating member is not provided on the upper surface of the lid.

On the other hand, Fig. 4 shows a test result of the temperature rising characteristics of the pan and the lid when the heat insulating member is provided on the upper surface of the lid in the case of Fig. 3.

As shown in Fig. 3, in the case where the heat insulating member is not provided, the initial temperature rising characteristics of the pan and the lid are the same, but if the lid body becomes high temperature, the amount of heat radiation is increased, and the temperature of the lid body is lowered. On the other hand, as shown in FIG. 4, in the case where the heat insulating member is provided, the first heat is absorbed by the heat insulating member, and there is a phenomenon that it is difficult to raise the temperature of the lid body, but once the heat insulating member is heated, the heat insulating member is heated. The lid and pan become the same temperature.

Fig. 5 shows an AC voltage frequency in the case where the pan is SUS304 having a thickness of 1.5 mm, the cover is a SS400 having a thickness of 3 mm, the gap is 17 mm, and the weight ratio of the pan to the lid is 1:1.451. 450 Hz, the test result of the temperature rise characteristics of the pan and the lid when the heat insulating member is not provided on the upper surface of the lid body.

On the other hand, Fig. 6 shows a case where the pan is SUS304 having a thickness of 1.5 mm, the cover is SS400 having a thickness of 3 mm, the gap is 17 mm, and the weight ratio of the pan to the lid is 1:1.451. The test result of the temperature rise characteristics of the pan and the lid when the frequency of the alternating voltage was 150 Hz and the heat insulating member was not provided on the upper surface of the lid.

In addition, Fig. 7 shows the weight of the SUS304 having a thickness of 1.5 mm in the pan, the SS400 having a thickness of 5.8 mm, the gap of 17 mm, the weight of the pan and the lid. When the ratio is 1:2.746, the AC voltage frequency is 150 Hz, and the temperature rise characteristics of the pan and the lid are tested when the heat insulating member is not provided on the upper surface of the lid.

It can be seen from FIG. 5 and FIG. 6 that the heat generation ratio of the cover of the magnetic system and the pan of the non-magnetic system is changed due to the difference in the frequency of the AC voltage. In this case, the temperature rise characteristics of the pan and the lid were substantially the same at a frequency of 150 Hz. In Fig. 6, the temperature of the lid body becomes lower in the high temperature region because the amount of heat radiation of the lid body becomes large.

Further, as shown in Fig. 7, since the heat generation ratio of the pan and the lid is also changed by the weight ratio thereof, it is considered that the heat generation ratio of the pan and the lid is controlled by frequency while considering the weight ratio of the pan and the lid.

Further, according to the results of the above test, in the case where the weight of the pan is set to 1, the weight ratio of the pan and the lid 3 as the food container 2 is the weight of the pan: the weight of the lid = 1.0: 0.5~3.0 is suitable.

In the magnetic circuit, the thickness of the pan including the non-magnetic system and the non-magnetic layer (food accommodating space S) between the pan and the lid are large. Therefore, the magnetic flux of the cover of the magnetic system is hard to be saturated, and the thinner and lighter the weight, the faster the temperature rise rate. If the weight ratio of the pan to the lid is set to 1.0: 1.0 to 1.5, the temperature rise is substantially equal. Here, the weight ratio for making the temperature rise temperature substantially equal is due to the fact that the distance between the pan and the lid is slightly different due to the contents accommodated, and the thickness of the lid and the pan is adjusted. In addition, it is considered that the weight ratio for substantially equalizing the temperature rise temperature can be adjusted within a range from about half (0.5) to three times (3.0) depending on the frequency control, the material of the heat insulating member, and the thickness of the heat insulating member. .

Further, in the induction heating test in which the pan and the cover are replaced with the non-magnetic metal member and the magnetic metal member (the lower mold and the upper mold) of the induction heating type processing apparatus of the first embodiment, the test is also obtained. The same result.

According to the induction heating type food processing apparatus 1 of the present embodiment configured as described above, the food is stored in the food accommodating space S formed by the food container 200 made of a non-magnetic material and the lid body 300 made of a magnetic material, in the food An induction coil 400 is disposed under the container 200, because the magnetic flux generated by the induction coil 400 is passed through the non-magnetic body. The food container 200 can therefore heat the food container 200. Further, since the magnetic flux generated by the induction coil 400 passes through the inside of the lid 300 after passing through the food container 200, the lid 300 can be heated. Thereby, the food container 200 and the lid 300 can heat the foodstuff accommodated in the food accommodating space S. Further, since the induction coil 400 is provided only on the side of the food container 200, the size of the apparatus is not increased, and since the opening and closing of the lid body and attachment and detachment can be simplified, it is easy to take out or put in the food. Further, since the food container 200 and the lid 300 are heated by induction heating, the heating efficiency is high, the ambient temperature is hard to be high, and the operability is not impaired.

Further, according to the induction heating type food processing apparatus 100 of the present embodiment, by applying the induction heating method using the intermediate frequency to the large-scale continuous food heating apparatus, the heating temperature and the heating depth can be controlled with high precision, and there may be The target food is heated selectively, strongly, and in a short time. By using induction heating by the intermediate frequency, the penetration depth of heat can be as deep as about 10 mm, and it is also possible to cope with a thick cooking utensil used in food production.

In addition, since the power loss in the intermediate frequency case is small compared to the high frequency, the distance from the power source can be increased. Thereby, the heating control which is an advantage of the induction heating method can be maintained with high precision, high safety, high energy efficiency, and can be used in a food manufacturing site.

Further, by continuously heating the cooking food in a short time and in a selective manner, it is possible to prevent uneven heating and scorching, simplify the cooling process after heating, reduce the load on the freezing equipment, and shorten the time-consuming heating and cooling process. Can greatly increase productivity. By heating only a desired portion for a short period of time, it is possible to prevent excess heat loss due to heat generation to the surroundings and deterioration of the working environment, thereby reducing the energy used.

In addition, when the food is heated and cooked using the induction heating type food processing apparatus 100 of the present embodiment, it is possible to prevent the loss of the flavor component to the outside of the food and the deterioration due to the residual heat, and it is possible to provide the target food with an ideal result. The grilled look and grilled scent of premium food.

Further, the invention is not limited to the embodiment.

For example, in addition to the 3N multiplier generator, a frequency converter and a saturable reactor can be used to form the power supply. Specifically, the inverter outputs a constant voltage and a constant frequency AC voltage, and a saturable reactor is connected between the inverter and the induction coil 4 for current control. Thereby, load vibration due to frequency fluctuation can be reduced. The use of a saturable reactor is because it is technically difficult to control the high frequency with a semiconductor element, and the cost is high. Instead of using an on/off control by a magnet or the like, a proportional integral control is used, and high-precision control can be performed.

Further, the non-magnetic metal body may be placed in close contact with the inner surface of the upper mold which is the upper surface of the magnetic metal body. By attaching the non-magnetic metal body to the inner surface of the upper mold in this way, the induced current flows in the non-magnetic metal body to generate heat, and the upper mold composed of the non-magnetic metal body and the magnetic metal body which are closely provided can be formed. The temperature rises. Further, by selecting the resistivity and thickness of the non-magnetic metal body to be closely attached, the temperature rise value of the upper mold can be adjusted.

Further, as shown in FIG. 8, in the case where temperature unevenness occurs in the non-magnetic metal member, between the non-magnetic metal member 2 and the insulating heat insulating member 8, and at a portion where the temperature of the non-magnetic metal member 2 is relatively low ( In the figure, which is located at the upper portion of the fixing screw 7 and in which the non-magnetic metal member 2 is embedded, a non-magnetic body 62 having a lower specific resistance than the non-magnetic metal member 2 may be attached. The low-resistivity non-magnetic body 62 is made of, for example, copper plating or the like. According to this configuration, the induced current flows easily at the arrangement portion of the non-magnetic body 62, the amount of heat generation increases, and the temperature rises, so that the temperature unevenness of the non-magnetic metal member 2 can be eliminated. Further, the low-resistivity non-magnetic body 62 may be disposed on the non-magnetic metal member 2 by a heat conducting member not shown.

In the above embodiment, the first container part 200 is used as a food container, and the second container part 300 is used as a lid body, but the opposite structure may be used, that is, the first container part 200 is used as a lid body, and the second container part is used. 300 as a food container. Further, both the first container member 200 and the second container member 300 may be used as a food container having a housing portion for accommodating food.

Further, the conductive non-magnetic body may be placed in contact with the inner surface of the food container side of the lid body as the second container member. By attaching the conductive non-magnetic body to the inner surface of the lid body as described above, the induced current flows in the conductive non-magnetic material to generate heat, and the lid body composed of the non-magnetic material and the magnetic body which are closely attached can be used. The temperature rises. Further, by selecting the resistivity and thickness of the closely-contacted conductive non-magnetic material, the temperature rise value of the lid body can be adjusted.

Further, as shown in FIG. 9, in the case where temperature unevenness occurs in the first container member 200, as long as the temperature of the first container member 200 and the insulating heat insulating member 800 are relatively low, the portion of the first container member is relatively low. (In the figure, the portion located in the upper portion of the fixing screw 700 and embedded in the first container member 200) may be attached to the non-magnetic body 240 having a lower specific resistance than the first container member. The low-resistivity non-magnetic body 240 is made of, for example, copper plating or the like. According to this configuration, the induced current flows easily at the arrangement portion of the non-magnetic body 240, the amount of heat generation increases, and the temperature rises, so that the temperature unevenness of the first container member 200 can be eliminated. Further, the low-resistivity non-magnetic body 240 may be disposed on the first container member 200 through a heat-conducting member (not shown).

The present invention is not limited to the embodiments described above, and various modifications can of course be made without departing from the spirit of the invention.

1‧‧‧Induction heating processing device

2‧‧‧ Lower mold (non-magnetic metal parts)

3‧‧‧Upper mold (magnetic metal parts)

4‧‧‧Induction coil

5‧‧‧Magnetic core

6‧‧‧Magnetic path forming member

7‧‧‧ fixing screws

8‧‧‧Insulation components

9‧‧‧Insulation components

61‧‧‧Support

W‧‧‧Processed objects

Claims (23)

An induction heating processing apparatus comprising: a non-magnetic metal member and a magnetic metal member disposed in such a manner as to sandwich a workpiece; and an induction coil disposed opposite to the magnetic metal member with respect to the non-magnetic metal member One side; a magnetic flux generated by the induction coil penetrates the non-magnetic metal member and passes through the inside of the magnetic metal member, whereby the non-magnetic metal member and the magnetic metal member are heated; a magnetic flux is disposed a path forming member covering an outer circumferential surface of the induction coil and a surface of the induction coil opposite to the non-magnetic metal member to form a magnetic flux generated by the induction coil Magnetic flux path. The induction heating type processing apparatus according to claim 1, wherein the non-magnetic metal member and the magnetic metal member are a lower mold and an upper mold, respectively. The induction heating type processing apparatus according to claim 1, wherein the magnetic circuit core is provided at a central portion of the induction coil. The induction heating type processing apparatus according to claim 1, wherein the non-magnetic metal member is supported by the magnetic flux path forming member. The induction heating type processing apparatus according to claim 1, wherein the magnetic flux path forming member is in contact with the magnetic metal member. The induction heating type processing apparatus according to claim 1, wherein a non-magnetic metal body is closely attached to the magnetic metal member on a side of the non-magnetic metal member with respect to the magnetic metal member. The induction heating type processing apparatus according to claim 1, wherein a resistivity is lower than the non-magnetic metal member on a side opposite to the magnetic metal member with respect to the non-magnetic metal member A non-magnetic body is closely attached to the non-magnetic metal member, or a non-magnetic body having a lower specific resistance than the non-magnetic metal member is disposed on the non-magnetic metal member through a heat conduction member. The induction heating type processing apparatus according to claim 1, wherein the heat insulating member is provided on a side opposite to the non-magnetic metal member with respect to the magnetic metal member. The induction heating processing apparatus according to claim 1, wherein the frequency of the alternating voltage applied to the induction coil is 50 Hz to 1000 Hz; and the non-magnetic metal member and the The heat ratio of magnetic metal parts. The induction heating type processing apparatus according to claim 9, wherein the power source for applying an alternating voltage to the induction coil is a transformer-type 3N frequency multiplier generator, wherein N is an odd number of 1 or more. An induction heating processing method, characterized in that a non-magnetic metal member and a magnetic metal member are disposed in such a manner as to sandwich a workpiece, and an induction coil is disposed opposite to the magnetic metal member with respect to the non-magnetic metal member One side, and is provided with a magnetic flux path forming member that covers an outer circumferential surface of the induction coil and a surface of the induction coil opposite to the non-magnetic metal member, forming a a magnetic flux path through which the magnetic flux generated by the induction coil passes; Heating the non-magnetic metal member and the magnetic metal member by passing a magnetic flux generated by the induction coil through the non-magnetic metal member and passing through the inside of the magnetic metal member, thereby performing the workpiece machining. The induction heating type processing method according to claim 11, wherein the frequency of the alternating voltage applied to the induction coil is 50 Hz to 1000 Hz; and the non-magnetic metal member and the control are controlled by the frequency The heat generation ratio of the magnetic metal member. An induction heating type food processing apparatus comprising: a first container part composed of a conductive non-magnetic body and a second container part composed of a magnetic body, the first container part and the second container part forming a food accommodating space The food accommodating space houses the heated food; and the induction coil is disposed on a side opposite to the second container member with respect to the first container member; magnetic flux generated by the induction coil penetrates the a wall of the first container member opposite the induction coil and passing through the interior of the second container member, whereby the first container member and the second container member are heated; a magnetic flux path forming member is disposed a magnetic flux path forming member covering an outer circumferential surface of the induction coil and a surface of the induction coil opposite to the first container member to form a magnetic flux through which the magnetic flux generated by the induction coil passes path. The induction heating type food processing device according to claim 13, wherein the first container member is a food container having an opening, and the opening portion is opened upward; The second container part is a lid that closes the opening of the food container. The induction heating type food processing device according to claim 13, wherein the magnetic circuit core is provided at a central portion of the induction coil. The induction heating type food processing device according to claim 13, wherein the first container member is supported by the magnetic flux path forming member. The induction heating type food processing device according to claim 13, wherein the conductive non-magnetic body is closely attached to the second container member on the first container member side with respect to the second container member On the container part. The induction heating type food processing device according to claim 13, wherein a resistivity is higher than the first container member on a side opposite to the second container member with respect to the first container member A low non-magnetic body is placed in close contact with the first container member, or a non-magnetic body having a lower resistivity than the first container member is disposed on the first container member by a heat conducting member. The induction heating type food processing device according to claim 13, wherein the heat insulating member is provided on a side opposite to the first container member with respect to the second container member. The induction heating type food processing device according to claim 13, wherein the frequency of the alternating voltage applied to the induction coil is 50 Hz to 1000 Hz; and the first container member and the chamber are controlled by the frequency The heat generation ratio of the second container member is described. The induction heating type food processing apparatus according to claim 20, wherein the power source for applying an alternating voltage to the induction coil is a transformer-type 3N frequency multiplier generator, wherein N is an odd number of 1 or more. An induction heating type food processing method, wherein a food container is housed in a food accommodating space, and a first container member made of a conductive non-magnetic material and a second container member made of a magnetic material form the food accommodating space. An induction coil is disposed on a side opposite to the second container member with respect to the first container member, and is provided with a magnetic flux path forming member that covers an outer circumferential surface of the induction coil And a surface of the induction coil opposite to the first container member, forming a magnetic flux path through which the magnetic flux generated by the induction coil passes; and passing the magnetic flux generated by the induction coil through the first container The first container part and the second container part are heated by a wall of the component opposite the induction coil and through the interior of the second container part, thereby processing the food product. The induction heating type food processing method according to claim 22, wherein a frequency of an alternating voltage applied to the induction coil is 50 Hz to 1000 Hz; and the first container part is controlled by the frequency The heat generation ratio of the second container part.