JP2009011955A - Garbage disposal machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a garbage disposal machine that can prevent carbonization and ignition of garbage by avoiding overheating the garbage which has little moisture and is flammable. <P>SOLUTION: The garbage disposal machine is equipped with a garbage disposal container 7, a means of microwave radiation 1 which irradiates garbage 14 with energy of a microwave, a means of detecting a reflected wave 6 which detects the reflected microwave from the garbage and a controlling means 5 which judges the termination timing of garbage heating from the output of the means of detecting a reflected wave 6. Judging that the garbage has little moisture by detecting higher level of the reflected wave than specified, the garbage heating is immediately terminated by stopping irradiation with the microwave from the means of microwave radiation 1. The garbage disposal machine can thus prevent carbonization and ignition of the garbage by avoiding overheating the garbage that has little moisture and is flammable. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a garbage disposal machine using microwaves.

  Conventionally, this type of garbage processing machine uses a magnetron and is equipped with a temperature detector for detecting the temperature of water vapor generated from the garbage in the garbage processing container outside the garbage processing container. The processing end time is determined from the rising speed or the difference between the rising temperature and the steady state temperature (see, for example, Patent Document 1).

With reference to FIG. 3, the processing end time determination of the garbage processing machine will be described. As long as there is moisture in the garbage, the steady state temperature T continues for a certain time even if heated. When there is no moisture in the garbage, when the temperature starts to rise and the temperature difference ΔT is reached, it is determined that the treatment is finished, and heating is stopped at time T2.
JP-A-5-39972

  However, in the above-described conventional configuration, the processing end time determination of the garbage does not stop heating immediately even when moisture is lost from the garbage, but stops heating when the temperature difference ΔT occurs. Therefore, when raw garbage has almost no moisture and is easy to burn (for example, paper), there is a problem that it is heated too much to carbonize and ignite.

  The present invention solves the above-mentioned conventional problems, and provides a garbage disposal machine that can prevent carbonization and ignition of garbage without excessively heating even flammable garbage that has little moisture. With the goal.

  In order to solve the above-mentioned conventional problems, the garbage processing machine of the present invention includes a garbage processing container for storing garbage provided in a microwave shielding container, and microwave radiation for irradiating the garbage with microwave energy. Means, a reflected wave detecting means for detecting the reflected wave of the microwave reflected from the garbage, and a control means for judging the processing end time of the garbage heating by the output of the reflected wave detecting means and stopping the microwave irradiation And a garbage disposal machine equipped with.

  As a result, when the amount of the reflected wave from the reflected wave detecting means is larger than a certain level, the control means determines that the moisture has been removed from the garbage, stops the microwave irradiation from the microwave radiating means, Stop heating the garbage immediately without heating. Therefore, even garbage that has little moisture and is flammable is not heated too much, and carbonization and ignition of the garbage can be prevented.

  The garbage processing machine of the present invention can prevent carbonization and ignition of garbage without excessively heating even flammable garbage that has little moisture.

  The first invention is a garbage processing container for storing garbage provided in a microwave shielding container, microwave radiation means for irradiating the garbage with microwave energy, and reflection of microwave reflected from the garbage. A garbage processing machine comprising a reflected wave detection means for detecting a wave and a control means for judging the processing end timing of the garbage heating by the output of the reflected wave detection means and stopping the microwave irradiation. . As a result, when the amount of the reflected wave from the reflected wave detecting means is larger than a certain level, the control means determines that the moisture has been removed from the garbage, stops the microwave irradiation from the microwave radiating means, Stop heating the garbage immediately without heating. Therefore, even garbage that has little moisture and is flammable is not heated too much, and carbonization and ignition of the garbage can be prevented.

  In the second invention, in particular, in the first invention, the microwave radiating means and the microwave solid-state oscillator that oscillates the microwave are connected by a coaxial cable, so that it is not necessary to use a waveguide. The garbage disposal machine can be downsized.

  According to a third aspect of the invention, in particular, in the first or second aspect of the invention, the microwave radiation means and the reflected wave detection means are provided on the microwave shielding lid of the microwave shielding container so as to face the garbage. Energy can be efficiently transmitted to the garbage, and the microwave reflected from the garbage can be reliably detected, and accurate heating control can be performed.

  According to a fourth aspect of the present invention, in particular, in the first or second aspect of the present invention, the microwave radiating means is provided on the side surface of the garbage processing container, so that the garbage and the microwave radiating means come close to each other, so Wave irradiation is reliable and the efficiency of heating garbage can be increased.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment)
The figure shows a garbage processing machine in an embodiment of the present invention.

  As shown in FIG. 1, the garbage processing machine according to the present embodiment includes a garbage processing container 7 for storing garbage 14 provided in a microwave shielding container 11 and a microwave for heating the garbage 14. The microwave solid oscillator 3 that oscillates, the microwave radiation means 1 that irradiates the garbage 14 with the energy of the microwave, the oscillation frequency variable means 4 that changes the oscillation frequency of the microwave solid oscillator 3, and the reflection from the garbage 14 And reflected wave detection means 6 for detecting the reflected wave of the microwave. Furthermore, a control means 5 is provided which determines the processing end timing of the garbage heating based on the output of the reflected wave detection means 6 and controls the oscillation frequency variable means 4 to stop the oscillation of the microwave solid state oscillator 3.

  The microwave shielding container 11 is hermetically sealed with a microwave shielding lid 12 that can be freely opened and closed to shield the leakage of microwaves to the outside, and the garbage disposal container 7 is installed therein.

  The garbage disposal container 7 is provided with a stirring blade 8 therein, and the stirring blade 8 is connected to a gear 10 that decelerates and transmits the rotation of the drive motor 9.

  The microwave radiation means 1 and the reflected wave detection means 6 are provided on the microwave shielding lid 12 of the microwave shielding container 11 so as to face the garbage 14, and efficiently transmit the microwave energy to the garbage 14. At the same time, the microwave reflected from the garbage 14 is reliably detected so that accurate heating control can be performed.

  The microwave radiation means 1 and the microwave solid-state oscillator 3 are connected by a coaxial cable 2 and do not require the use of a waveguide, so that the space for the waveguide is not required and the garbage processing machine can be downsized. It is said.

  Further, a cooling fan 13 connected to the control means 5 is installed in the microwave shielding container 11 in order to cool the garbage processing container 7.

  Next, the operation and action of the garbage processing machine configured as described above will be described.

  The garbage 14 is put in the garbage disposal container 7, the microwave shielding lid 12 is closed, and the microwave shielding container 11 is sealed. Then, when the drive motor 9 is driven by the control means 5, the speed is reduced by the gear 10, the stirring blade 8 is driven, and the garbage 14 thrown into the garbage processing container 7 is crushed. Then, the control means 5 drives the oscillation frequency variable means 4 to drive the microwave solid state oscillator 3 at a specific oscillation frequency F1 shown in FIG. The oscillated microwave is radiated from the microwave radiating means 1 attached to the microwave shielding cover 12 to the space in the garbage processing container 7 via the coaxial cable 2 and irradiated to the opposing garbage 14. The The radiated microwave is absorbed by the moisture contained in the garbage 14, the moisture that has absorbed the microwave is heated, and the moisture evaporates from the garbage 14. When moisture evaporates and disappears in this manner, even if microwaves are irradiated, there is no moisture, so the microwaves are not absorbed and reflected. The reflected microwave is detected by the reflected wave detection means 6 and transmitted to the control means 5.

  As shown in FIG. 2, the control means 5 stops the oscillation of the oscillation frequency varying means 4 when the microwave reflection amount becomes larger than the value P1 which is the oscillation frequency F1. Then, the oscillation of the microwave solid-state oscillator 3 is stopped, the output of the microwave radiation means 1 is also lost, and the heating of the garbage 14 is stopped.

  Thus, according to the garbage processing machine of this embodiment, if the amount of reflection of microwaves is detected from the garbage 14, and the moisture is lost from the garbage 14, the garbage 14 is immediately heated without extra heating. Therefore, it is not necessary to heat until the temperature difference is generated after the garbage 14 is dehydrated. For example, in the case of garbage that has little moisture such as paper and is flammable, it is heated. Not too much, carbonization and ignition of the garbage 14 can be prevented.

  In the present embodiment, the microwave radiating means 1 is provided on the microwave shielding lid 12, but since the microwave radiating means 1 is connected by the coaxial cable 2, the microwave radiating means 1 is generated to increase the heating efficiency. It may be provided on the side surface of the garbage disposal container 7 near the garbage.

  Conventionally, for the purpose of shortening the time, when the hot air heated by the heater is applied to the garbage and dried, the odor becomes stronger. However, in this embodiment, since the microwaves directly act on the moisture of the garbage, the wind There is no need to send the odor, and the effect that the smell is difficult to be obtained is also obtained.

  As described above, the garbage processing machine according to the present invention has almost no moisture, and does not overheat even flammable garbage, and can prevent carbonization and ignition of the garbage. It can be applied not only for home use but also for business use.

The block diagram which shows the structure of the garbage processing machine in embodiment of this invention. Characteristic diagram of reflected wave detection means of the same garbage disposal machine Characteristics chart of detection of processing end time in conventional garbage processing machine

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Microwave radiation means 2 Coaxial cable 3 Microwave solid state oscillator 4 Oscillation frequency variable means 5 Control means 6 Reflected wave detection means 7 Garbage disposal container 11 Microwave shielding container 12 Microwave shielding lid 14 Raw garbage

Claims (4)

A garbage processing container for storing garbage provided in a microwave shielding container, a microwave radiation means for irradiating the garbage with microwave energy, and a reflected wave for detecting a reflected wave of the microwave reflected from the garbage A garbage processing machine comprising: a detection unit; and a control unit that determines a processing end time of the garbage heating process based on an output of the reflected wave detection unit and stops microwave irradiation. The garbage processing machine of Claim 1 which connected the microwave radiation | emission means and the microwave solid state oscillator which oscillates a microwave with the coaxial cable. The garbage processing machine according to claim 1 or 2, wherein the microwave radiation means and the reflected wave detection means are provided on the microwave shielding lid of the microwave shielding container so as to face the garbage. The garbage processing machine of Claim 1 or 2 which provided the microwave radiation means in the side surface of the garbage processing container.

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