JPH11114527A - Garbage drying and treating machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enhance the heating efficiency of a garbage drying and treating machine which heats and dries garbage and to lessen unequal dying. SOLUTION: This garbage drying and treating machine has a metallic treating vessel 21 for housing the garbage and an induction heating coil 24 for induction heating of the treating vessel 21. The treating vessel 12 is composed of a thermosensitive metal having a Curie point of 130 deg.C. The treating vessel 21 is inductively heated according to such constitution and, therefore, the heating efficiency is high. When the temp. of the treating vessel 21 attains 130 deg.C at which scorching occurs, the magnetic permeability of the treating vessel 21 itself degrades and the treating vessel is no more inductively heated. Namely, when the crude refuse of part of the treating vessel 21 dries, the temp. of the part alone exceeds 130 deg.C and only the part is no more inductively heated and other parts are inductively heated and, therefore, the heating may be ended without the uneven drying.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a garbage drying machine for mainly heating and drying garbage generated in a home kitchen.

[0002]

2. Description of the Related Art A conventional garbage drying processor of the heating and drying system will be described with reference to FIG. In the figure, reference numeral 1 denotes a processing container 1 into which garbage is put, and a rotary blade 2 is provided on the inner bottom side of the processing container 1.
Is rotatably arranged. The rotary blade 2 is rotated by a motor 3 to crush and agitate the garbage in the processing container 1. The processing container 1 is removably stored in a storage unit 9, and the storage unit 9 is disposed in the main body 8. A heater 10 is provided on the outer bottom of the storage unit 9 to heat garbage in the processing container 1. The upper part of the processing container 1 is openably and closably covered by a lid 6, and one end side of the lid 6 is configured to rotate by a hinge provided on an upper part of the main body 8. Reference numeral 5 denotes a temperature sensor for detecting the temperature of the processing container 1, and reference numeral 11 denotes a deodorizing device for deodorizing exhaust gas from the storage unit 9.

The operation of the garbage drying processor having the above configuration will be described. When garbage is put into the processing container 1 and the operation is started, the heater 10 is energized to heat the processing container 1 and the rotary blade 2 is turned on. Spin to grind and stir garbage. When the heater 10 is energized and heating proceeds, the water contained in the garbage boils, and the temperature of the processing container 1 becomes 100
The temperature is kept at ℃. In this state, the water contained in the garbage evaporates, and the vapor is deodorized by the deodorizing device 11 and then discharged outside the machine. When the heating by the heater 10 further proceeds, the moisture contained in the garbage disappears, that is, when the garbage dries, the temperature sensor 5
Detected temperature exceeds 100 ° C and the detected temperature is 13
When the temperature reached 0 ° C., the heating operation by the heater 10 was completed.

[0004]

However, in the conventional garbage dryer, the heat from the heater 10 is conducted to the processing container 1 via the storage unit 9, so that the heat is transferred to the storage units 9 other than the processing container 1. Heat also conducts, and heater 1
The heat of 0 could not be fully utilized for drying the garbage. Further, a heat insulating material 12 is provided below the heater 10, but the heat leaking downward by the heat insulating material 12 cannot be completely shut off. In this regard, the heat of the heater 10 is used for drying garbage. Was wasted without.

[0005] In view of the above problems, an object of the present invention is to provide a garbage drying processor with improved heating efficiency for drying garbage.

[0006]

According to the present invention, in order to achieve the above object, the processing vessel is induction-heated by an induction heating apparatus, and most of the energy from the induction heating apparatus is directly transmitted to the processing vessel. Therefore, the heating efficiency can be increased.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION
A processing container for storing garbage, and an induction heating device for induction heating the processing container, wherein the processing container is made of a material that is induction-heated. According to this configuration, the processing container is heated by the induction heating device. Induction heating can be performed, and heating efficiency can be increased.

According to a second aspect of the present invention, there is provided a processing container for accommodating garbage, and an induction heating device for induction heating the processing container, wherein the magnetic permeability of the processing container decreases at a predetermined temperature or higher. According to this configuration, the processing container is induction-heated by the induction heating device, so that the heating efficiency is high.When the temperature of the processing container reaches a predetermined temperature at which the sticking occurs, the processing is performed. Since the container itself is a temperature-sensitive metal, the magnetic permeability decreases and induction heating stops,
The occurrence of scorching can be prevented. Also, when a portion of the garbage in the processing container is dried, the temperature of only a portion of the garbage exceeds a predetermined temperature, and only that portion is not induction-heated, and the other portion is induction-heated. Can be terminated.

The third aspect of the present invention is the second aspect of the present invention.
The inner surface of the processing vessel described is covered with aluminum,
According to this configuration, even if the magnetic permeability of the processing container is reduced and the magnetic field from the induction heating device reaches the inner surface side of the processing container, the magnetic field is prevented from leaking above the processing container due to the aluminum on the inner surface of the processing container. Can be shut off. Further, since aluminum has high thermal conductivity, the temperature of the inner surface of the processing container can be made uniform, and uneven heating of garbage can be eliminated.

The invention according to claim 4 of the present invention is the invention according to claim 3.
The induction heating device according to the invention described above comprises an induction heating coil and an inverter device for supplying a high-frequency current to the induction heating coil, and is provided with aluminum at least in a portion facing the induction heating coil. For example, a high-frequency current is supplied from the inverter device to the induction heating coil, and a high-frequency magnetic field from the induction heating coil is supplied to the processing container.
That is, since aluminum is provided in a portion that receives most of the high-frequency magnetic field from the induction heating coil, it is possible to prevent the high-frequency magnetic field from leaking above the processing container even if the magnetic permeability of the processing container decreases.

The invention according to claim 5 of the present invention is the invention according to claim 1.
A hot air generator is disposed above the processing container of the invention according to any one of the above-described items 4 to 4, and according to this configuration, garbage in the processing container is transferred to the processing container by heat conduction from the processing container. It can be heated by both warm air from above.

The invention according to claim 6 of the present invention is the invention according to claim 5
According to the hot air generator of the invention described above, comprising a heater and a drying fan, according to this configuration, the air heated by the heater is agitated by the drying fan, and hot air is blown downward from above the processing container. Can be sprayed.

The present invention according to claim 7 of the present invention is directed to claim 5
In addition to the invention described in the sixth aspect, the apparatus further comprises a temperature detecting means for detecting the temperature of the processing container, and operates the hot air generating device when the detected temperature of the temperature detecting means reaches a hot air operating temperature. First, the entire garbage is heated by the heat conduction of the processing container, and when the drying proceeds to form a dumpling, the temperature of the processing container rises to the hot air operating temperature, and the hot air is heated from the heat conduction of the processing container. Since switching to heating with hot air from the generator, dumpling-like garbage can be heated with hot air,
Drying efficiency can be increased.

[0014] The invention according to claim 8 of the present invention is directed to claim 5.
Or, in addition to the invention described in 6, the control temperature of the hot air generator is set lower than the control temperature of the induction heater, and the hot air generator is operated when the induction heater is stopped. For example, when the water content of the garbage decreases and the temperature of the processing container rises to the control temperature, the induction heating device is stopped and the hot air generator is operated, so that convection by the hot air generating device occurs, and the temperature inside the processing container increases. To be uniform. Further, since the control temperature of the hot air generator is lower than the control temperature of the induction heating device, the time for lowering the temperature of the processing container is earlier, and the time until the induction heating device is operated again is shorter.

According to the ninth aspect of the present invention, a fifth aspect of the present invention is provided.
Or, in addition to the invention described in 6, the input to the induction heating device is reduced, and the input to the hot air generator is increased. According to this configuration, when the water content of the garbage decreases, the temperature of the processing container increases. Rise, and the input from the induction heating device will decrease, but the drying time can be shortened without increasing the rated input by increasing the input of the hot air generator to compensate for the reduced input. Can be done.

[0016]

【Example】

(Embodiment 1) A first embodiment of the present invention will be described with reference to FIG. In FIG. 1, reference numeral 21 denotes a processing container in which garbage is charged and heated and dried, and the processing container 21 is made of a material to be induction-heated. The material of the processing container 21 is a temperature-sensitive metal whose magnetic permeability rapidly decreases at a predetermined temperature (Curie point) or higher, and specifically, an alloy of copper and nickel, an alloy of iron and nickel, and an alloy of iron and nickel. , Preferably an alloy of iron and nickel having a high saturation magnetic flux density, or a stainless steel containing iron and nickel.
The entire inner surface of the processing container 21 is covered with aluminum 21a.

A rotary blade 22 made of metal is rotatably disposed on the inner bottom side of the processing chamber 1 and is rotated by a driving motor 23. The rotary blade 22 stirs garbage in the processing container 21 and also has a function of crushing garbage. The processing container 21 is detachably mounted in a storage section 21 provided in the main body 31.

Reference numeral 24 denotes an induction heating coil for induction heating the processing container 21, which is provided on the outer bottom of the storage section 21. The induction heating coil 24 is supplied with a high-frequency current from the inverter device 34 and generates a high-frequency magnetic field.
The magnetic field generated from the induction heating coil 24 is
In order to reach 1, the storage portion 32 is made of a material through which a magnetic field passes, for example, a synthetic resin. The induction heating coil 24 and the inverter 34 constitute an induction heating device.

The upper portion of the processing container 21 is covered with a lid 26 so as to be openable and closable, and rotates around a hinge 27 provided on the upper portion of the main body 31. A drying fan 29 is provided on the lower surface of the lid 26.
And a heater 28, and the drying fan 29 is driven to rotate by a fan motor 35. The drying fan 29, the fan motor 35 and the heater 28 constitute a hot air generator.

Reference numeral 25 denotes a temperature sensor which detects the temperature of the processing container 21 by contacting the outer surface of the processing container 21. The temperature detected by the temperature sensor 25 is output to the control device 36,
The operation of the inverter device 34, the fan motor 35 as a hot air generator, and the heater 28 is controlled in accordance with the detected temperature.

The operation of the garbage drying processor configured as described above will be described. Garbage processing container 21
, The cover 26 is closed, and a power supply (not shown) is turned on.
An alternating magnetic field is generated from the induction heating coil 24. The bottom of the processing vessel 21 facing the induction heating coil 24 generates heat due to hysteresis loss or the like due to the alternating magnetic field, and heating of the internal garbage starts.

At this time, the temperature of the processing container 21 detected by the temperature sensor 25 rises, and is maintained at 100 ° C. when there is moisture in the garbage. Then, when the water content of the garbage is lost and the temperature detected by the temperature sensor 25 becomes a constant temperature of 100 ° C. or more, for example, 130 ° C., the control device 36 determines that the drying is completed, and stops the energization of the inverter device 34, The operation of the induction heating device 4 is stopped.

If the processing vessel 21 is made of, for example, a temperature-sensitive metal having a Curie point at 130 ° C., moisture in the garbage will be lost, and the magnetic permeability will be reduced in a part where the temperature reaches 130 ° C. or higher, and heat generation due to hysteresis loss will occur. This does not occur, and the portion below 130 ° C. generates heat intensively. Therefore, the processing container 2
Since only the undried portion of the garbage in 1 generates heat, uneven drying of the garbage is unlikely to occur at the end of drying.

When the magnetic permeability of the processing container 21 decreases, the alternating magnetic field reaches the inner surface side at that portion.
Since the inner surface of the processing container 21 is covered with the aluminum 21a, it is possible to prevent the alternating magnetic field from leaking above the processing container 21, and to prevent interference such as radio noise due to the leakage magnetic field. Further, since the aluminum 21a having good heat conductivity is provided, the whole garbage can be uniformly heated. If only the purpose of preventing the leakage magnetic field is to be provided, it is sufficient to provide the aluminum 21a only in the portion facing the induction heating coil 24.

The control device 36 controls the induction heating coil 24
In addition to the heating of the processing container 21 by the heating, the heating by the hot air generator is also performed. That is, the heater 28 and the fan motor 35 are operated to blow warm air from above the processing container 21. The hot air hits the upper surface of the garbage in the processing container 21,
Heat the garbage evenly. However, since warm air does not hit other than the garbage other than the upper surface, the motor 23 is intermittently driven and the rotary blade 22 performs intermittent stirring. By this agitation, the lower garbage in the processing container 21 is moved upward, and the unevenness in drying of the garbage is reduced. In addition, processing container 2
By simultaneously performing heating from the bottom surface and heating from the garbage upper surface, the drying time can be reduced. Although the rotary blade 22 is driven intermittently, it may be driven continuously, in other words, it is only necessary that the garbage can be stirred.

(Embodiment 2) Next, a second embodiment of the present invention will be described with reference to FIG. In the present embodiment, only the content of control by the control device 36 is different, and the configuration is the same as that of the first embodiment.

As shown in the figure, when the garbage in the early stage of drying has a large amount of water, the garbage is heated from the bottom of the processing vessel 21 by an induction heating device, and the drying of the garbage in the latter half of the drying proceeds. In this state, the garbage can be efficiently dried in a short time by switching to hot air drying by the hot air generator.

(Embodiment 3) Next, a third embodiment of the present invention will be described with reference to FIG. In the present embodiment, only the content of control by the control device 36 is different, and the configuration is the same as that of the first embodiment.

As shown in the figure, when the garbage dries and the water content decreases and the temperature detected by the temperature sensor 25 rises and reaches the control temperature (for example, 130 ° C.), the control device 36 controls the induction heating device. By stopping the driving and then activating the hot air generator, the garbage can be uniformly heated by convection heat. Since the control temperature of the hot air generator is lower than the control temperature of the induction heating device, the temperature detected by the temperature sensor 25 decreases faster due to the operation of the hot air generator, and the power supply to the induction heating device can be increased. Note that the above effects can be achieved even without the heater 8 of the hot air generator 10.

(Embodiment 4) Next, a fourth embodiment of the present invention will be described with reference to FIG. In the present embodiment, only the content of control by the control device 36 is different, and the configuration is the same as that of the first embodiment.

As shown in the figure, when the water content of the garbage decreases, the temperature of the processing vessel 21 rises, and the permeability of the processing vessel 21 exceeds 130 ° C. and the magnetic permeability decreases, so that the input to the induction heating device decreases. . The controller 36 increases the input of the hot air generator in a manner to compensate for the reduced input of the induction heater. With this control, the drying time can be reduced without increasing the rated input for simultaneously inputting the induction heating device and the hot air generator with full power.

[0032]

According to the first aspect of the present invention,
Since the processing vessel is directly heated by the induction heating device, it is safer than the sheathed heater and the like, and the heating efficiency can be increased.

According to the second aspect of the present invention, the processing container is made of a temperature-sensitive metal whose magnetic permeability decreases at a predetermined temperature or higher. It decreases, and heating by the induction heating device is not performed, so if part of the garbage in the processing container dries, that part will not be heated and only the remaining part will be heated,
It is possible to prevent uneven drying of garbage in the processing container.

According to the third aspect of the present invention, since the inner surface of the processing container is covered with aluminum, even if the magnetic permeability of the processing container decreases, the magnetic field is prevented from leaking above the processing container. And the interference of radio noise can be eliminated. Further, since aluminum has high thermal conductivity, the temperature of the inner surface of the processing container can be made uniform, and uneven heating of garbage can be eliminated.

According to the fourth aspect of the present invention, since aluminum is provided at least in the portion facing the induction heating coil, the leakage of the magnetic field from the portion receiving most of the high-frequency magnetic field from the induction heating coil is prevented. It can also suppress the aluminum material.

According to the fifth aspect of the present invention, since the hot air generator is disposed above the processing container, heat conduction from the garbage processing container and heat convection from above the processing container can be prevented. , And the heating efficiency can be increased.

According to the invention of claim 6 of the present invention, since the hot air generator is constituted by the heater and the drying fan, the air heated by the heater is agitated by the drying fan, and the air is heated from above to below the processing vessel. Hot air can be blown on the surface, and the drying time can be shortened.

According to the invention of claim 7 of the present invention, when the drying proceeds and the garbage becomes dumpling, the temperature of the processing container rises to the operating temperature of the hot air, and the hot air from the processing container is heated. Since switching to heating by hot air from the generator can be performed, dumpling-like garbage can be heated with hot air, and drying efficiency can be increased.

According to the eighth aspect of the present invention, when the water content of the garbage decreases and the temperature of the processing container rises to the control temperature, the induction heating device is stopped and the hot air generation device is operated, so that the temperature is reduced. The convection by the wind generator is generated, and the temperature inside the processing container can be made uniform. Also, since the control temperature of the hot air generator is lower than the control temperature of the induction heating device, the time for reducing the temperature of the processing container is reduced. And the time until the induction heating device is operated again is shortened, and the drying time can be shortened.

According to the ninth aspect of the present invention, when the water content of the garbage decreases, the temperature of the processing vessel rises, and the input from the induction heating device decreases. Since the input of the hot air generator is increased, the drying time can be reduced without increasing the rated input.

[Brief description of the drawings]

FIG. 1 is a sectional view of a garbage drying machine showing a first embodiment of the present invention.

FIG. 2 is a diagram showing a current supply pattern of an induction heating device and a hot air generator of a garbage drying machine showing a second embodiment of the present invention.

FIG. 3 is a diagram showing an energization pattern of an induction heating device and a hot air generation device of a garbage drying machine showing a third embodiment of the present invention.

FIG. 4 is a diagram showing an energization pattern of an induction heating device and a hot air generator of a garbage drying machine showing a fourth embodiment of the present invention.

FIG. 5 is a sectional view of a conventional garbage dryer.

[Explanation of symbols]

 21 Processing Container 21a Aluminum 24 Induction Heating Coil 28 Heater 29 Drying Fan 30 Hot Air Generator 34 Inverter

──────────────────────────────────────────────────続 き Continued on front page (51) Int.Cl. ⁶ Identification code FI F26B 23/08 B09B 5/00 P

Claims (9)

[Claims] 1. A garbage drying machine comprising a processing container for storing garbage and an induction heating device for induction heating the processing container, wherein the processing container is made of a material to be induction heated. 2. A processing container for storing food waste, and an induction heating device for induction heating the processing container, wherein the processing container is made of a temperature-sensitive metal whose magnetic permeability decreases at a predetermined temperature or higher. Drying machine. 3. The garbage dryer according to claim 2, wherein the inner surface of the processing container is covered with aluminum. 4. The induction heating device according to claim 3, wherein the induction heating device comprises an induction heating coil and an inverter device for supplying a high-frequency current to the induction heating coil, and aluminum is provided at least in a portion facing the induction heating coil. Garbage drying machine. 5. The garbage drying processor according to claim 1, wherein a hot air generator is disposed above the processing container. 6. The garbage drying processor according to claim 5, wherein the hot air generator comprises a heater and a drying fan. 7. The garbage drying process according to claim 5, further comprising temperature detecting means for detecting a temperature of the processing container, wherein the hot air generator is operated when the temperature detected by the temperature detecting means reaches a hot air operating temperature. Machine. 8. The garbage drying according to claim 5, wherein the control temperature of the hot air generator is set lower than the control temperature of the induction heating device, and the hot air generator is operated when the induction heating device is stopped. Processing machine. 9. The garbage dryer according to claim 5, wherein the input to the hot air generator is increased when the input to the induction heating device is reduced.