JP3845837B2 - Garbage processing machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a microwave heating type garbage disposal machine.
[0002]
[Prior art]
As this kind of garbage processing machine, there is one described in Japanese Patent Laid-Open No. 11-333415 previously proposed by the present inventors. In this garbage processing machine, a processing container is fixedly installed in a housing, a microwave irradiation port is provided at a lower portion of the side wall of the processing container, and is closed with a microwave transmitting material. Irradiate into the processing container from the wave irradiation port. A rotating cutter and a stirring blade are separately supported on the same axis on the bottom in the processing vessel, and the rotating cutter is rotated slightly above the stirring blade at a higher speed to shred the garbage at the same time as stirring. It is like that.
[0003]
[Problems to be solved by the invention]
In this conventional garbage processing machine, the processing container is fixedly installed in the housing and itself is a microwave shielding chamber, and the processing container cannot be taken out of the housing. The later removal is particularly troublesome when the amount of processing is small, and the cleaning inside the processing container is also troublesome, and it is practically unsuitable for a simple type (small size) for processing a relatively small amount of garbage. .
[0004]
Therefore, the first problem of the present invention is that the processing container is separated from the microwave shielding chamber and the processing container is made microscopic so as to facilitate the introduction of garbage into the processing container, the removal after the processing, and the cleaning. An object is to make the wave shielding chamber detachable and to make it possible to improve the drying efficiency by efficiently performing intake and exhaust in the processing container.
[0005]
By the way, the present inventor made a prototype of a garbage disposal machine having the above-mentioned structure and conducted various experimental researches. Since there are various types of garbage, some garbage can be cut with a rotating cutter. However, after the raw garbage is dried to some extent, it becomes excessively heated by microwave irradiation, causing ignition, scorching, rotating cutters, etc. We faced various problems such as that the raw garbage shredded by the water and the water discharged from the raw garbage at once were trapezoidal at the bottom of the processing container, and the processing time was increased by shredding with the rotating cutter. In order to solve this problem, structural improvements have been made, but it has been difficult to find the clue.
[0006]
As a result of trial and error, the present inventor found that when the raw garbage at a stage where drying is still insufficient and still contains a lot of moisture, the rotating cutter is suddenly rotated at a high speed and shredded, the raw garbage becomes bowl-shaped. When the food waste falls into the result of giving viscosity to the garbage, or while moisture still remains in the garbage, the microwave is absorbed by the moisture, but the garbage loses moisture. As the humidity of the processing vessel decreases, the absorption of microwaves due to moisture gradually decreases, so if you cut and agitate the garbage under the same conditions, you may experience excessive local heating due to microwave irradiation. I found out that I was invited.
[0007]
Therefore, the second problem of the present invention is simply solved by controlling the number of rotations of the rotary cutter, based on such knowledge, the above-described problems that could not be solved by structural improvements. There is to be able to do it.
[0008]
[Means for Solving the Problems]
In order to achieve the above first and second problems, in the present invention, raw garbage is put into a processing container, stirred, and microwaved by a magnetron while being shredded by a rotating cutter rotated by a cutter motor. In the garbage processing machine that irradiates and heats and dries, a cutter motor control means is provided that does not rotate the cutter motor within an arbitrarily set time from the start of microwave irradiation, and rotates it after the time has elapsed. A microwave shielding chamber that is irradiated with waves is provided in the housing, and a microwave shielding upper lid that opens and closes the upper surface opening of the microwave shielding chamber is hinged to the housing, and at the bottom of the microwave shielding chamber, A rotating cradle is mounted, and the processing container is detachably installed on the rotating cradle, and is cooled by a fan after cooling the magnetron. Wind, together with the air duct to conduct the air blowing port at the upper portion of the side wall of the microwave shielded room is placed in the housing on the opposite side of the blower opening a side wall upper portion of the microwave shielded compartment, microwave An exhaust port for exhausting the outside of the shielding chamber is provided, and an inner upper lid is provided that can close the upper surface opening of the processing vessel in a state where the upper surface opening of the microwave shielding chamber is closed by the microwave shielding upper lid, and an outer peripheral wall of the inner upper lid Is provided with a wall portion that hangs down in a recess facing the air blowing port of the air duct, thereby forming an air intake portion that guides the air blown from the air blowing port to the lower side in the processing container. The exhaust part facing the exhaust port is also formed .
[0009]
The cutter motor control means can switch the rotation of the cutter motor to a plurality of steps after the arbitrarily set time from the start of the microwave irradiation, and can arbitrarily set the rotation time for each step. Further, the cutter motor can be intermittently rotated at each step.
[0010]
That is, according to the present invention, at the stage where the raw garbage contains a lot of moisture, the rotational speed of the rotating cutter is kept low, the raw garbage is cut into large pieces, and the rotational speed of the rotating cutter is reduced as the moisture decreases and drying proceeds. By gradually or continuously increasing the amount of water, the inconvenience of shredding in a state containing a lot of moisture is eliminated, and the garbage is cut into fine pieces as drying progresses, and the shredding speed and shredding are reduced. By changing the agitation speed of the fragments, heating by microwave irradiation is consistently and appropriately performed in accordance with the progress and shredding of moisture in the garbage, and it is efficiently and evenly performed under temporally averaged temperature conditions. In addition to heating, it is possible to prevent local overheating due to microwave irradiation.
[0011]
At the beginning of operation, moisture is rapidly released from the garbage by heating with stirring. Further, when the garbage is heated by microwaves, the temperature suddenly rises to a certain height, but does not increase much thereafter, so that it is easier to cut after waiting for the garbage to be heated. Moreover, when it cut | disconnects from the beginning, as above-mentioned, garbage will become a bowl shape, or viscosity will become high and it will become a nodule shape. Therefore, the cutter motor control means does not rotate the cutter motor within a certain time from the start of microwave irradiation. Further, the cutter motor control means intermittently rotates the cutter motor in each step.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described in detail with reference to the drawings.
[0013]
1 to 3 show the whole garbage processing machine of this embodiment, and FIG. In this garbage disposal machine, a processing container 51 made of a microwave transmitting material (plastic) is used, and this is placed on a rotating cradle 54 in a box-shaped microwave shielding chamber 53 provided in a housing 52. It is detachably mounted and is rotated together with the rotation cradle 54.
[0014]
The microwave shielding chamber 53 is surrounded on a surface other than the upper surface by a metal plate 55 such as stainless steel that reflects microwaves, and the upper surface opening can be opened and closed by a microwave shielding upper lid 56 hinged to the housing 52. The microwave shielding upper lid 56 is opened so that the processing vessel 51 can be taken out from the upper surface opening of the microwave shielding chamber 53.
[0015]
In the microwave shielding chamber 53, the microwave from the microwave generator 57 installed in the housing 52 is irradiated from the lower side wall of the microwave shielding chamber 53 through the waveguide 58. In addition, the wind provided to cool the microwave generator 57 by the cooling fan 59 can be blown from the upper part of the side wall of the microwave shielding chamber 53 through the blower duct 60. On the other hand, an exhaust port 61 communicating with the outside of the housing 52 is provided on the side wall of the microwave shielding chamber 53 on the opposite side of the air duct 60a at the tip of the air duct 60 so that it can be forcibly exhausted by an exhaust fan (not shown). It has become.
[0016]
The processing container 51 has a bottomed cylindrical shape that tapers near the bottom, and its upper surface opening is closed with a hinged or detachable inner upper lid 62 for use. The inner upper lid 62 has a concave portion 62a at the center, and a handle 63 for taking in and out the processing container 1 and carrying it inside the concave portion 62a (outside the center of the inner upper lid 62). A handle 51a is also provided on the peripheral wall of the processing container 51 itself. The outer peripheral wall 62 b of the inner upper lid 62 has a mesh structure in order to introduce the air from the air outlet 60 a of the air duct 60 into the processing container 51 and exhaust it through the air outlet 61. That is, the outer peripheral wall 62b itself serves as an intake portion and an exhaust portion. An annular space 64 is formed between the outer peripheral wall 62b and the peripheral wall of the recess 62a. The air that has entered the annular space 64 from the air blowing port 60a is directed downward in the processing vessel 51 and exhausted. At this time, the peripheral wall 62c of the concave portion 62a is bent and hung so as to go to the exhaust port 61.
[0017]
As shown in an enlarged view in FIG. 4, a cutter shaft 66 having a cap-shaped cutter rotating core 65 is rotatably supported by a bearing 67 and is rotated on the cutter rotating core 65. The cutter 68 is tightened. Both blades of the rotating cutter 68 fall on the outer periphery of the cutter rotating core 65 as viewed from the cutter shaft 66 and then extend horizontally along the flat bottom surface of the processing vessel 51, and the tips of both blades are tapered. It is inclined upward along the side surface.
[0018]
At the lower end of the cutter shaft 66, a joint portion 66 a is provided outside the bottom of the processing container 51. When the processing container 51 is mounted on the rotation cradle 54, this joint portion 66 a is installed in the housing 52. The cutter motor 69 (FIG. 1) is coupled to a joint portion 70 a on the cutter motor shaft 70 side so that the rotation of the cutter motor 69 can be transmitted to the rotary cutter 68.
[0019]
On the other hand, the rotation pedestal 54 is a bottomed cylindrical shape having a size that can be fitted to the cylindrical seat 51b at the bottom of the processing vessel 51, and has a cylindrical shaft 71 through which the cutter motor shaft 70 penetrates. A cylindrical shaft 71 is rotatably supported by a bearing 72 at the bottom center of the microwave shielding chamber 53. The cylindrical shaft 71 transmits the rotation of the stirring motor 73 (FIG. 1) installed in the housing 52 via a pulley and a belt.
[0020]
The cutter motor 69 is controlled by the cutter motor control circuit, and the stirring motor 73 is controlled by the stirring motor control circuit as shown in the timing chart of FIG. That is, the rotation cradle 54 and the processing container 51 mounted thereon are periodically repeated in three stages of normal rotation at a fixed time t1, stop at a fixed time t2, and reverse rotation at a fixed time t3 . Further, the rotation cutter 68 is held by the cutter motor control circuit for a required time T0 arbitrarily set from the start of the operation of the garbage disposal machine (at the start of microwave irradiation), and is rotated intermittently thereafter. In addition, the rotational speed is increased stepwise. The switching time (time until switching to the next step) T1 to Tn, the intermittent time t of the intermittent rotation in each step, and the rotation speed r are arbitrarily set.
[0021]
This is because, at the beginning of operation, water removal from the garbage is rapidly performed by heating while stirring, and in the case of heating the garbage by microwave, the temperature in the processing container 51 is rapidly increased to a certain height. However, since it does not increase so much after that, it is more likely that the water generated by the cutting will start when the rotating cutter 68 starts cutting after waiting for sufficient water removal from the garbage and heating by the microwave. This is because the absorption rate of microwave energy is small, the utilization efficiency of microwave energy is increased, and cutting is facilitated. In addition, when garbage is suddenly cut (chopped) from the beginning of operation, it becomes a cocoon shape or a nodule due to viscosity, but when the size of the cut piece of garbage is initially large and gradually becomes finer, This can be prevented and the load on the rotary cutter 68 can be reduced.
[0022]
Furthermore, as the garbage is dried and shredded, the moisture contained in the fine fragments decreases, the absorption of microwaves by the moisture decreases, and the amount of heat accumulated in each fine fragment also increases. It is because it will ignite or burn if it does not raise the stirring speed while cutting further by the fine shredding by 68 and its fine piece. When the rotation of the rotary cutter 68 is controlled in this way, the temperature in the processing container 51 can be stabilized, the vaporization of moisture from each fine piece and the heat dispersion can be promoted, and excessive heating is performed. It is possible to heat efficiently while suppressing the above.
[0023]
In this embodiment, the garbage is largely agitated by rotating the processing container 51 itself. However, since the inner upper lid 62 of the processing container 51 rotates integrally with the processing container 51, the outer peripheral wall 62b of the inner upper lid 62 is moved. By using a mesh structure, air can be blown and exhausted into the processing container 51.
[0024]
A plurality of drain holes 74 sized so as not to leak microwaves are provided at the bottom of the processing container 51, and the drain generated in the processing container 51 falls into the drain collection container 75 through the drain holes 74. The drain collection container 75 is detachably inserted into the rotation receiving base 54 and can be taken out simultaneously with or separately from the processing container 51.
[0025]
Since the cylindrical seat portion 51 b of the bottom of the processing container 51 is fitted to the rotation receiving base 54, the bottom of the processing container 51 also has a function as an upper cover for the rotation receiving base 54 and the drain collection container 75.
[0026]
The drain collection container 75 may be detachably installed in the housing 52 outside the microwave shielding chamber 53, and the drain from the drain hole 74 at the bottom of the processing container 51 may be guided to the drain collection container 75. Further, the inner upper lid 62 of the processing container 51 may be structured not to rotate integrally with the processing container 51. In that case, the processing container 51 can be taken in and out of the microwave shielding chamber 53 by holding the handle of the inner upper lid 62, and when the processing container 51 is mounted on the rotation cradle 54, the inner upper lid 62 is placed in the microwave shielding chamber 53. The air inlet provided in the inner upper lid 62 is fixed to the air outlet 60a of the air duct 60, and the air outlet provided in the inner upper lid 62 matches the air outlet 61 communicating with the outside of the housing 52. Even if the processing container 51 rotates together with the rotation cradle 54 in this state, the inner upper lid 62 does not rotate, and the fitting portion of the inner upper lid 62 is slidably contacted with the upper surface opening of the processing container 51 to be in contact with the processing container. It is preferable to have a structure that can prevent 51 from swinging.
[0027]
【The invention's effect】
The present invention has the following effects.
(1) Since the processing vessel is made of a microwave transmitting material, a rotating cradle is attached to the bottom of the microwave shielding chamber irradiated with microwaves, and the processing vessel is detachably installed on the rotating cradle. By opening the microwave shielding upper lid that opens and closes the upper surface opening of the microwave shielding chamber, the processing container can be taken out from the upper surface opening of the microwave shielding chamber, and it is easy to input garbage before processing and discharge after processing In addition, cleaning of the processing container is facilitated.
(2) Since the inner upper lid capable of closing the upper surface opening of the processing container in the state where the upper surface opening of the microwave shielding chamber is closed by the microwave shielding upper lid is provided, it is possible to prevent scattering of garbage from the processing container.
[0028]
(3) The air blown by the blower fan after cooling the magnetron is guided to the upper part of the side wall of the microwave shielding chamber by the blower duct, and the blown air from the blower duct is sent to the inner upper lid that opens and closes the upper surface opening of the processing container. Since the intake portion provided is introduced into the processing container so as to be directed downward, the processing container is exhausted from the exhaust portion provided in the inner upper lid portion to the exhaust port at the upper side wall of the microwave shielding chamber. Intake and exhaust to the inside using the inner top lid, and intake air is made to flow downward from the upper part of the side wall of the microwave shielding chamber toward the lower side of the processing vessel, while exhaust is also made from the upper part of the side wall of the microwave shielding chamber. As a result, it is possible to make an upward flow, so that the drying process is promoted by the flow of intake and exhaust in the processing container, and fresh air, introduction and exhaust of moisture can be efficiently performed. , Thereby improving the drying efficiency.
(4) Since the air blown after cooling the magnetron is introduced into the processing container as described above, the heat from the magnetron can be effectively used for drying garbage.
[0029]
(5) According to the inventions according to claims 2 and 3, the rotation of the cutter motor for rotating the rotary cutter is switched to a plurality of steps, and the switching time and the rotation speed are arbitrarily set for each step. Inconveniences caused by shredding in a state containing a large amount of waste, that is, problems such as garbage becoming cocoon-like or forming a nodule with high viscosity can be solved.
(6) As the drying progresses, the raw garbage is cut into fine pieces, and by increasing the shredding speed and the stirring speed of the fine pieces, microwave irradiation is performed in accordance with the progress of moisture evaporation and shredding of the raw garbage. Heating is performed consistently and appropriately, and heating can be performed efficiently and uniformly under temporally averaged temperature conditions, and local overheating due to microwave irradiation can be prevented.
[Brief description of the drawings]
FIG. 1 is a front view of the entire mechanism of an embodiment of the present invention.
FIG. 2 is a side view of the above.
FIG. 3 is also a plan view.
FIG. 4 is a partially enlarged cross-sectional view.
FIG. 5 is a timing chart showing the operation of the agitation motor and the operation of the cutter motor in contrast to changes in temperature and humidity in the processing container.
[Explanation of symbols]
51 Processing container 51a Handle 51b Cylindrical seat 52 Housing 53 Microwave shielding chamber 54 Rotating cradle 55 Metal plate 56 Microwave shielding upper cover 57 Microwave generator 58 Waveguide 59 Cooling fan 60 Air duct 60a Air outlet 61 Air outlet 62 Inner upper lid 62a Recessed portion 62b Outer peripheral wall 62c Recessed peripheral wall 63 Handle 64 Annular space 65 Cutter rotating core 66 Cutter shaft 67 Bearing 68 Rotating cutter 66a Joint portion 69 Cutter motor 70 Cutter motor shaft 70a Joint portion 71 Cylindrical shaft 72 Bearing 73 Stirring motor 74 Drain hole 75 Drain collection container

Claims (3)

Start of microwave irradiation in a garbage processing machine that puts garbage in a processing container, stirs it, and irradiates it with a magnetron while chopping it with a rotating cutter rotated by a cutter motor to heat and dry it. The cutter motor control means for rotating the cutter motor without rotating the cutter motor within the time arbitrarily set from the above is provided, and a microwave shielding chamber irradiated with microwaves from the magnetron is provided in the housing. In addition, a microwave shielding upper lid that opens and closes the upper surface opening of the microwave shielding chamber is hinged to the housing, and a rotating cradle is attached to the bottom of the microwave shielding chamber. A side wall of the microwave shielding chamber that is detachably installed on a table and blows air from a fan after cooling the magnetron Together with the air duct for performing the air blowing port is provided in said housing in part, the opposite side of the blower opening a side wall upper portion of the microwave shielded chamber, an exhaust port for exhausting to the microwave shielding outdoor is provided, also comprising a lid inner can close the upper opening of the processing container upper opening of the microwave shielded room is closed by the microwave shielding upper cover, the outer peripheral wall of the inner lid, the By providing a wall portion that hangs down in the recess facing the air blowing port of the air duct, an air intake portion that guides the air blown from the air blowing port toward the lower side in the processing container is formed. A garbage disposal machine characterized in that an exhaust part facing the exhaust port is also formed .   The cutter motor control means can switch the rotation of the cutter motor to a plurality of steps after the arbitrarily set time from the start of the microwave irradiation, and can arbitrarily set the rotation time for each step. The garbage processing machine described in 1.   The garbage processing machine according to claim 2, wherein the cutter motor control means intermittently rotates the cutter motor in each step.

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