JPH0989458A - Garbage-disposal machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To equip a machine with a catalytic deodorizing means by which a malodorant gas containing a combustible gas evolved from the disposal of garbage can be safely and efficiently deodorized, and the machine can be made structurally smaller. SOLUTION: The subject relates to a garbage-disposal machine having a drying chamber 1 for drying garbage and is equipped with a catalytic deodorizing means 5 with a nichrome heater 32 which is for deodorizing a malodorant gas issuing from the drying chamber 1. On the upstream side of the catalytic deodorizing means 5 there is provided a prevention filter 33 for preventing the backflow of a flame accompanying an explosion of a combustible gas from being caused.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a garbage processing machine. More specifically, it is a kitchen waste processing machine that processes kitchen waste such as garbage generated from kitchen waste for general households or commercial use, and efficiently emits odorous gas containing flammable gas generated when cooking kitchen waste by heating and drying. The present invention also relates to a garbage disposal device having a catalytic deodorizing means for safely deodorizing.

[0002]

2. Description of the Related Art Conventionally, various kitchen waste processing machines have been proposed which use a catalyst to deodorize the odorous gas generated when the kitchen waste is dried (see, for example, JP-A-5-96721). This kitchen waste processing machine is a kitchen drying room having a stirring means for stirring kitchen waste and an outlet for discharging the kitchen waste after the treatment, a deodorizing device equipped with a catalyst and a heater, a condenser for treating steam when cooking the kitchen waste, and , A blower. Further, the kitchen waste drying chamber, the condenser, the blower, and the deodorizer are sequentially connected by a circulation path.

In the case of performing the garbage treatment using such a conventional garbage treating apparatus, first, the garbage is put into the garbage drying chamber and stirred by the stirring means. At the same time, it is heated and dried by the heater of the deodorizing device and the hot air obtained by the blower. The odorous gas and water vapor generated at this time are
Hot air is processed between the circulation device and the deodorizing device, and while circulating between the deodorizing device and the garbage drying room.

[0004]

However, such a conventional garbage disposal device basically does not take safety measures against the introduction of a dangerous substance having a flammability.

That is, the heater temperature of the deodorizing device in the conventional garbage treating machine is usually 400 ° C. or higher, though it depends on the type of catalyst and heating method (method of heating the catalyst itself, method of heating the odor gas itself). Is set by. This temperature is dangerous to the combustible gas and is the ignition point of the combustible gas in a certain concentration range (explosion range).

For example, ethanol gas contained in sake and the like has an explosion range of 3.3 to 19% by volume and an ignition point of 41.
The temperature is 7 ° C. (see “Gas Safety Handling Data Book, edited by Nippon Oxygen Co., Ltd. and Matisson Gas Products, published by Maruzen Co., Ltd., p. 30”).

That is, the combustible gas in the concentration of the explosion range is 4
If it passes through a heater or a catalyst heated to 00 ° C. or higher, an explosion or ignition occurs, causing a problem that the resin or rubber tube in the path between the drying chamber and the catalyst burns. Even if there is no combustible material in the path between the drying chamber and the catalyst, the gas may expand due to heat and the lid of the processor may be damaged due to pressure.

The present invention is intended to solve the above-mentioned problems of the prior art, and is a small-sized garbage disposal device equipped with a catalyst deodorizing means capable of efficiently and safely deodorizing odorous gas containing combustible gas generated by garbage disposal. The purpose is to provide.

Further, according to the present invention, when the odorous gas generated by the garbage treatment contains a combustible gas, the garbage treatment is automatically stopped to improve the safety of the apparatus. It also aims to provide a machine.

[0010]

The kitchen garbage treating machine of the first invention (Claim 1) has a processing chamber for processing garbage, and a catalytic deodorizing means having a heating means for deodorizing odorous gas generated from the processing chamber. In the kitchen waste disposal device including means, an upstream side of the catalyst deodorizing means is provided with a prevention filter for preventing backflow of flame due to an explosive phenomenon due to combustible gas.

Further, it is preferable that the prevention filter has a plate shape having a plurality of through holes.

It is preferable that the depth of the through hole of the prevention filter is at least twice the diameter of the through hole.

The diameter of the through hole is preferably in the range of 2.0 to 3.0 mm.

It is preferable that a temperature sensor is provided on the downstream side of the prevention filter, and when the temperature measured by the temperature sensor exceeds a predetermined temperature, the garbage processing is automatically stopped.

It is preferable that the apparatus further comprises alarm means linked with the temperature sensor.

The kitchen waste treating machine of the second invention (Claim 6) is provided with a kitchen processing equipment for processing kitchen waste, and a kitchen waste processing apparatus provided with a catalytic deodorizing means having a heating means for deodorizing odorous gas generated from the processing room. In the machine, a pressure adjusting valve is provided on the upstream side of the catalyst deodorizing means.

It is preferable that an opening detecting means for detecting the opening of the pressure adjusting valve is further provided, and the garbage processing is automatically stopped when the opening detecting means detects the opening of the pressure adjusting valve.

It is preferable that the apparatus further comprises an alarm means linked with the opening detection means.

The kitchen waste treating machine of the third invention (claim 8) is provided with a processing room for processing the kitchen waste, and a kitchen garbage processing provided with a catalyst deodorizing means having a heating means for deodorizing odorous gas generated from the processing room. In the machine, a backflow preventing filter and a pressure regulating valve for preventing a flame caused by an explosive phenomenon caused by a flammable gas are provided upstream of the catalyst deodorizing means.

The kitchen garbage processor of the fourth invention (claim 10) comprises:
A kitchen waste processing machine having a processing room for processing garbage, and a catalytic deodorizing means for deodorizing odorous gas generated from the processing room, wherein a sensor for detecting at least flammable gas is provided in the processing room. When the density detected by the sensor exceeds a predetermined density, the garbage processing is automatically stopped.

The garbage disposal of the fifth invention (claim 11) is
A kitchen waste processing machine having a processing room for processing garbage, and a catalytic deodorizing means for deodorizing odorous gas generated from the processing room, wherein a sensor for detecting at least flammable gas is provided in the processing room. In addition, when the concentration detected by the sensor exceeds a predetermined concentration, the forced air flow rate inside the processing chamber is increased.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the first invention (Claim 1), since the upstream side of the catalyst deodorizing means is provided with the prevention filter for preventing the backflow of the flame due to the explosion phenomenon due to the combustible gas, the odorous gas is prevented. As in the conventional case, deodorization can be performed efficiently, and even if the flammable gas flows to the catalyst layer or the heater and a back flow of flame occurs due to the explosion phenomenon, it is blocked by the prevention filter.

The prevention filter preferably has a plate shape having a plurality of through holes, and is formed of, for example, a metallic material such as stainless steel.

The diameter and the thickness of the through hole of this preventive filter are preferably designed so that the following equation is established, with an emphasis on that the flame does not reach the upstream side of the filter.

Depth of through hole ≧ n × diameter of through hole (2 ≦ n ≦ 3) Usually, the diameter of this through hole is designed to be about 2.0 to 3.2 mm. preferable.

Further, when a temperature sensor provided on the downstream side of the prevention filter detects a temperature exceeding a predetermined temperature at the time of the occurrence of an explosion phenomenon, the garbage processing is automatically stopped for safety and the user is instructed to do so. Then, since an alarm about the occurrence of such an explosion phenomenon is issued by various alarm means such as a lamp and / or a buzzer, it is preferable because the garbage can be safely treated.

In the second invention (claim 6), since the pressure regulating valve capable of regulating the pressure in the gas passage is provided in front of the heater for heating the odorous gas of the catalyst deodorizing means, an explosion occurs. Even if the pressure inside the catalyst deodorizing means increases due to the expansion of gas due to the backflow of flames that accompanies the phenomenon, the pressure is regulated by the pressure control valve so that it does not fall below the prescribed pressure, so damage to the processor due to pressure is avoided. it can.

If a photosensor or the like is provided as an opening detecting means for detecting the opening of the pressure adjusting valve near the pressure adjusting valve of the catalyst deodorizing means, if the pressure adjusting valve operates, the sensor is detected. Then, the processor automatically stops, and the warning lamp and the buzzer are notified, so that the garbage can be safely treated, which is preferable.

Further, as in the third aspect of the present invention (claim 8), by providing both the flame backflow prevention filter and the pressure regulating valve, it is possible to carry out the garbage disposal more safely.

In the fourth invention (claim 10), a sensor for detecting at least a combustible gas is provided in the processing chamber, and when the concentration detected by the sensor reaches a predetermined level or more, the kitchen is disused. Since it is configured to automatically stop the processing, the garbage processing can be performed safely.

In the fifth invention (claim 11), a sensor for detecting at least the combustible gas is provided in the processing chamber, and when the concentration detected by the sensor becomes equal to or higher than a predetermined level, the treatment is performed. Since it is configured to increase the forced ventilation in the indoor section, the gas concentration is reduced, and the garbage treatment can be safely performed.

Next, the garbage treating machine of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram illustrating the configuration of an embodiment of the garbage treatment machine of the present invention, FIG. 2 is a cross-sectional explanatory view of the garbage treatment machine of FIG. 1, and FIG. 3 is an enlarged cross-sectional explanation of the main part of the catalyst deodorizing means of FIG. FIG. 4 is a cross-sectional explanatory view of a catalyst deodorizing means having a pressure adjusting valve, which is another embodiment of the garbage treating machine of the present invention.
1 is a partial cross-sectional view of the drainage pipe showing the condensed water collecting part and the deodorant of FIG. 1, FIG. 6 is a block diagram showing a system for controlling the operation of the garbage processing machine of the present invention, and FIG. 7 is a system of FIG. 8 is a flow chart showing the emergency stop operation used, FIG. 8 is a flow chart showing the forced ventilation flow rate increasing operation using the system of FIG. 6, and FIG. 9 is a change of the odor level detected by the odor sensor of FIG. It is a graph shown along.

In FIG. 1, reference numeral 1 is a processing chamber as a drying chamber for heating and drying kitchen waste, 2 is a condensing means for condensing water vapor in odorous gas generated in the drying chamber 1, and 3 is water condensed by the condensing means 2. A condensed water tank for storing
5 is a catalyst deodorizing means for deodorizing the odorous components generated from the garbage, 6 is a pipe connecting the drying chamber 1 and the condensing means 2, 7
Is a pipe that connects the condensing means 2 and the air blowing means 4, 8 is a pipe that connects the air blowing means 4 and the catalyst deodorizing means 5, and 9 is an exhaust pipe that discharges the deodorized processing gas.

The drying chamber 1 is formed airtight, and is provided with an air inlet for taking the outside air into the drying chamber 1. The outside air sucked into the drying chamber 1 and the gas containing steam and odorous components generated inside the drying chamber 1 pass through the pipe 6 and the condensing means 2
Water vapor is condensed there, and the condensed water is stored in the condensed water tank 3. On the other hand, the odorous gas from which the water vapor has been removed is sucked by the air blowing means 4 through the pipe 7 and sent to the catalyst deodorizing means 5 through the pipe 8 where it is deodorized and finally discharged from the discharge pipe 9 to the outside. To be done.

As a method for heating and drying the kitchen waste in the drying chamber 1, a temperature drying method, a lower heating method in which the kitchen waste is heated from the bottom by a heater, and the like can be adopted. The heating temperature is 1 considering the generation of toxic gas or shortening of drying time.
The temperature is preferably about 00 to 120 ° C. Further, the air introduced directly into the drying chamber 1 has a low absolute humidity, so that it is useful for shortening the drying time of the garbage.

Next, the construction of the garbage processing machine shown in FIG. 1 will be described more specifically. As shown in FIG. 2, the drying chamber 1 for drying the kitchen waste is formed in the processor body 10 and has a space for accommodating the garbage container 11 containing the kitchen waste, and the lid 12 at the top.
Packing 30 attached to the lid 12
The airtightness is maintained. The dust container 11 is configured to be detachable from the drying chamber 1 and is provided with a stirring blade 13 at the bottom thereof. A driven shaft 14 penetrating the bottom of the drying chamber 1 is connected to the stirring blade 13. The stirring blade 13 is intermittently driven by the drive motor 15, and the normal rotation and the reverse rotation are alternately repeated to stir the garbage in the garbage container 11 so that the temperature of the garbage becomes uniform, whereby the stirring blade 13 is efficiently dried. The driven shaft 14 and the drive motor 15 are the drive motor 1
The speed reducer 16 and the coupling mechanism 17 are connected to each other.

As the material of the dust container 11, it is preferable to employ a metal material such as stainless steel which is hard to corrode or steel which is coated with a fluororesin or the like so as not to stick carbides of garbage.

A bottom heater of the drying chamber 1 is provided with a sheathed heater 18 having a heat-dissipating surface formed by embedding a heating element therein, and widely heating the bottom of the dust container 11. Therefore, the kitchen waste can be efficiently heated and can be efficiently dried with low power consumption. The sheath heater 18 controls the bottom temperature of the dust container 11 to a temperature in the range of 100 to 120 ° C, usually about 105 ° C. The higher the heating temperature is, the shorter the drying time can be. However, if the heating temperature is too high, the garbage will be easily carbonized. Also the garbage container 11
Even if plastic such as vinyl chloride resin or nylon is mixed inside, it will not gasify at around 105 ° C.
No chlorine-containing gas is generated by the decomposition of vinyl chloride resin and no harmful gas is generated by the decomposition of other plastics.

Inside the bottom and side walls of the drying chamber 1, a heat insulating material 20 is provided so as to cover the dust container 11 and the sheath heater 18.
Is provided. The heat insulating material 20 reduces heat dissipation loss.

An air intake port 21 communicating with the drying chamber 1 is provided in the central portion of the lid 12, and a check valve 21a is provided at the air intake port 21 so that the outside air is sucked in without leaking odorous gas. An exhaust port 22 is provided on the side wall of the drying chamber 1, and the gas generated in the drying chamber 1 is sent to the condensing means 2 through a pipe and a condenser inlet 23. The check valve 21a is provided in the air intake port 21 because the check valve 21a is provided.
Without a, a large amount of gas is generated when stirring kitchen waste,
This is because if the capacity of the blowing unit 4 is exceeded, odor may leak from the air intake port 21 to the outside. Check valve 21
By providing a, the capacity of the blowing means can be reduced.

Further, the reason why the outside air is directly sucked into the drying chamber 1 is that the outside air has a low absolute humidity, which accelerates the drying speed of the garbage.

The condensing means 2 includes a heat exchanger 24 and a drain pipe 2.
5 and a propeller fan 26 that circulates cooling air. Further, inside the drain pipe 25, the deodorizers 44a, 4a are divided into two layers along the direction perpendicular to the paper surface of FIG.
4b (see FIG. 5) is installed. The heat exchanger 24 may be a box type, a flexible tube, or any other suitable type, and is made of an aluminum alloy, a copper alloy, or the like having good thermal conductivity and corrosion resistance. A drain pipe 25 is connected to the lower end of the heat exchanger 24, and condensed components such as water vapor in the gas are collected in a wax-shaped condensed water collecting portion 43 in the drain pipe 25, and only one deodorant 44b is selectively selected. It is supposed to pass. The odor of the condensed water that has passed is considerably reduced and is collected in the condensed water tank 3. Like the condensed water, the odorous gas appropriately passes through one of the two deodorants 44a and 44b. The odor of the gas that has passed through the deodorizing agents 44a and 44b is almost eliminated, and the remaining odor is completely eliminated by the catalytic deodorizing means which will be described later. Since the odorous gas becomes almost odorless by the condensing means 2, the burden on the catalyst deodorization can be reduced. The deodorants 44a and 44b are cartridge type and replaceable. The deodorizers 44a and 44b are fixed to the inner surface of the drain pipe 25 with a fixing plate 45 and a sealing material 46, and the odor leakage at this portion is because the inside of the drain pipe 25 is in a negative pressure state by the blower 4. No problem.

As the deodorants 44a and 44b, activated carbon and molecular sieves utilizing physical adsorption, and iron phthalocyanine compound or copper oxide utilizing chemical reaction are effective.

Since most of the odor is removed by the deodorant in the condenser as described above, the amount of catalyst in the catalyst deodorizing means 5 can be reduced. Therefore, it leads to cost reduction. Also,
The odor of the wastewater is removed by this deodorant, so that the discomfort is eliminated when the wastewater is discarded. Further, the effect of separating the deodorizing means by the deodorizing agent into two layers, one for exclusive use of odorous gas and the other for odorous gas and drainage, is as shown below. If it is not divided into two layers, the whole becomes wet with the drainage, and it becomes difficult for odorous gas to pass through. As a result, the pressure in front of the deodorizing layer increases, and the odorous gas pushes out the drainage, so that the drainage is not sufficiently deodorized. Therefore, if the odorous gas can pass through another layer by dividing into two layers as described above, the drainage is sufficiently deodorized by the other deodorizing layer.

Further, the condenser having the deodorant effectively reduces the gas concentration even when combustible gas such as ethanol gas is generated by the garbage treatment,
The explosion phenomenon can be prevented in advance. Specifically, when vodka with an alcohol content of 50 degrees is contained in about 100 ml of kitchen waste, first, the concentration is reduced to about half by the original condensation action of the condenser. For example, while the concentration of ethanol gas is 6.3% by volume inside the processing container, the concentration after passing through the condenser is reduced to about 3.1% by volume.

Furthermore, the deodorizing action of the deodorizing filter inside the condenser (particularly the filter side through which only the odorous gas passes) captures the remaining 90% or more of the combustible gas, so that the final concentration is about 0. It can be reduced to 3% by volume or less. Therefore, explosion range 3.3 to 19% by volume
It is much lower than, and no explosion phenomenon occurs.

The condensed water tank 3 is detachably attached to the bottom of the main body 10, and a tank inlet 3a is formed in the upper part of one end thereof. The condensed water that has passed through the drain pipe 25 accumulates in the condensed water tank 3 from the tank inlet 3a. Further, the gas from which water vapor has been removed through the drain pipe 25 is sucked by the blower fan 4 which is a blower means through the pipe 7 and is sent to the catalyst deodorizing means 5.

Further, the blower fan 4 is designed to be able to constantly blow the gas, and its blowing ability is set to an amount larger than the average amount of water vapor generated from the garbage per unit time when treating the garbage. This is because if the air volume is increased too much, the temperature in the drying chamber 1 may decrease, the water in the condensing means 2 may not be efficiently collected, and the catalyst capacity in the catalyst deodorizing means 5 may decrease. Is. The blower fan 4 and the propeller fan 26 for cooling are the cooling and blower motor 2
It is driven by 7.

As shown in FIG. 3, the catalyst deodorizing means 5 includes a catalyst layer 31, a nichrome heater 32 for heating gas, and a backflow prevention filter 3 for flames caused by an explosion phenomenon.
It is formed so that 3 becomes one unit. Further, a temperature sensor 34 is provided on the nichrome heater 32 side of the prevention filter 33. As shown in FIG. 1, the pipes 7 and 8 communicating with the condensing means 2 via the blower fan 4.
The odorous gas sucked from the condensed water tank 3 through the first passes through the through hole 33a of the prevention filter 33, is heated by the nichrome heater 32, and is oxidatively decomposed in the catalyst layer 31 to be an odorless gas. The optimum temperature of the odorous gas after passing through the nichrome heater 32 is 400 to 500 ° C., and the odorous gas can be efficiently deodorized. As the catalyst layer 31, a platinum-based, platinum-palladium-based or nickel-based oxidation catalyst can be used.

The shape of each small chamber can be variously changed as long as the catalyst layer 31 is a cylinder whose inside is divided into a plurality of chambers by an inner wall in the axial direction. For example, a honeycomb structure may be formed by forming a plurality of holes having a hexagonal cross section.

As the prevention filter 33, for example, a plate-like filter having a plurality of through holes is used in order to effectively prevent the backflow of the flame due to the explosion phenomenon without hindering the flow of the odorous gas. .

For example, the prevention filter 33 shown in FIGS. 3 (a) to 3 (c) is a metal disc made of copper, stainless steel, Inconel or the like having a plurality of through holes 33a.

The diameter and thickness of the through-hole of this prevention filter are preferably designed so that the following formula is established, giving importance to the fact that the flame does not reach the upstream side of the filter.

Depth of the through hole 33a ≧ diameter of the through hole (2 ≦ n ≦ 3) Normally, the diameter of the through hole 33a is 2.0 to 3.2 mm.
It is preferably designed to a degree. In the case of such a diameter, the depth of the through hole 33a is 4.0 to
It is preferably designed so as to exceed 9.6 mm. More specifically, the diameter of the through hole is 2.0.
If mm is adopted, the depth of the hole may be 4.0 to 6.0 mm or more, preferably about 10 mm.

The depth of the through hole mentioned here means the depth of the right cylindrical portion of the through hole. That is, if the shape of the entire through hole is a right circular cylinder, it means the depth of the entire through hole. On the other hand, when the through hole is formed by NC processing or the like, the edges before and after the through hole are deburred to obtain the through hole 33a having the tapered edge shown in FIG. 3C. In this case, the depth of the through hole 33a indicates the depth D of the right cylindrical portion.

A flammable gas such as ethanol gas (explosion range 3.3 to 1) that has reached the concentration within the explosion range in the odorous gas.
9% by volume, ignition point 423 ° C.), ethanol gas ignites in the nichrome heater 32 and the catalyst layer 31,
Explosion phenomenon occurs.

The backflow of flames caused by the explosion phenomenon causes the blower fan 4 and other paths to spread, but in the present invention, the prevention filter 33 for preventing the backflow of flames caused by the explosion phenomenon is provided. Therefore, the spread of fire is prevented. Further, since the temperature sensor 34 is attached to the nichrome heater side of the explosion phenomenon prevention filter 33, if the temperature becomes 100 ° C. or higher due to the effect of the explosion phenomenon, a microcomputer (microcomputer) connected to the temperature sensor (not shown). (E.g.), the processor is stopped urgently and the user is informed of the abnormality by means of an alarm buzzer or a warning lamp (not shown), so that the garbage can always be safely treated.

In the above-mentioned embodiment, the backflow of the flame due to the explosion phenomenon is prevented by providing the prevention filter.
Besides, various means for preventing backflow of flames can be adopted.

The catalyst deodorizing means 5 shown in FIG. 4 comprises a catalyst layer 31, a nichrome heater 32 for heating gas, and a pressure adjusting valve 35 in front of the heater 32 as one unit. Furthermore, a photo sensor 36 for constantly monitoring the operating state of the pressure regulating valve 35 is provided outside the unit. The odorous gas that has passed through the blower fan 4 is oxidatively decomposed by the catalytic deodorizing means 5 into an odorless gas, as in the above embodiment. Although not shown, the other constituent elements than the catalyst deodorizing means 5 are common to the above-described embodiment.

When the odorous gas contains a flammable gas that has reached the concentration within the explosion range, such as butane gas (explosion range 1.8 to 8.4% by volume, ignition point 430 ° C.), the butane gas is contained in the nichrome heater 32 and the catalyst layer. Ignite at 31 and an explosion phenomenon occurs. Although the phenomenon causes the blower fan 4 and other paths to spread or be damaged by pressure, the pressure adjusting valve 35 is provided in the present invention. Therefore, the expansion of the gas due to the explosion phenomenon is alleviated here, and the gas concentration is reduced, so that the backflow of the flame is prevented. Further, the pressure adjusting valve 35 is constantly monitored by the photo sensor 36.
Therefore, when the pressure regulating valve 35 senses a change in pressure and the valve opens, the light emitted from the photosensor is reflected differently from normal light and is not received, and it is sensed that the valve has been opened. At this time, the microcomputer (not shown) or the like connected to the photo sensor 36 causes an emergency stop of the processor,
Since the user is notified of the abnormality by a buzzer for alarm or a warning lamp, it is possible to always safely dispose of the garbage.

In the above two embodiments, the catalyst deodorizing means is provided with only one of the prevention filter for preventing the backflow of the flame and the pressure regulating valve. The present invention is not limited to this, and may include both the prevention filter and the pressure regulating valve. In that case, even if an explosion phenomenon occurs, the backflow of the flame is prevented by the prevention filter, the expansion of the gas is relieved by the pressure control valve, and the gas concentration is also reduced, so the kitchen treatment should be performed more safely. You can

Further, the odor sensor 5 capable of detecting at least a combustible gas is provided on the upper lid 12 in the drying chamber 1 of FIG.
If 1 is installed, emergency stop or forced ventilation can be performed by the means shown in FIGS. Generally, a household of 4 people produces about 700 g of garbage per day, and when this garbage is prepared as standard and dried with this processor, the level change of the odor sensor 51 is shown by the dotted line in FIG. Shown. However, when the garbage containing the combustible gas is thrown in, the level change of the odor sensor 51 is shown by the solid line in FIG.
There is a considerable level difference. When the explosion dangerous concentration of ethanol was 3.3% by volume, the level detected by the odor sensor 51 was 4.5V. Therefore, the boundary between safety and unsafety at the odor level was set to 4.4V.

The kitchen garbage processor having the odor sensor 51 is operation-controlled by a block diagram as shown in FIG. 6, and a flowchart for emergency stop is shown in FIG. A flowchart for increasing the forced ventilation flow rate to avoid the problem is shown in FIG. The amount of increase in the forced ventilation flow rate may be at least twice the normal flow rate. In terms of concentration, when about 50 ml of liquor (ethanol 50%) is added, the concentration of ethanol in the drying chamber 1 is about 5 at a normal flow rate of 5 l / min.
It becomes the volume% and is well within the explosion range. However, if the flow rate is doubled, for example, the concentration of ethanol in the drying chamber 1 will be halved, which is outside the explosion range, so that danger can be avoided. At this time, the temperature of the drying heater and the temperature of the catalyst heater are constantly controlled to be the optimum temperatures according to the flow rate.

The above-mentioned emergency stop operation shown in FIG. 7 and / or the forced draft flow increase operation shown in FIG. 8 are collectively controlled by the microcomputer shown in FIG.

In the above description, the present invention has been described with a kitchen waste treating machine for heat-drying garbage, but the present invention can also be applied to a kitchen treating machine for treating kitchen waste with microorganisms.

[0066]

According to the first invention (Claim 1), the prevention filter for preventing the backflow of the flame is provided upstream of the catalyst deodorizing means, so that if the odorous gas contains combustible gas. However, even if an explosion due to combustible gas occurs, it can be prevented by this prevention filter, and the problems such as fire spread and explosion do not occur in the processing machine itself. Therefore, it is possible to safely dispose of garbage.

Further, when an explosion due to a combustible gas occurs, it can be blocked by the prevention filter, but from the viewpoint of further focusing on safety, if a temperature sensor is installed on the nichrome heater side of the prevention filter, the temperature when the explosion occurs The temperature around the sensor becomes high, and the sensor senses it, and the processor can be brought to an emergency stop. Further, since this emergency stop can be notified to the user by a buzzer, a warning lamp, etc., it is possible to always carry out the garbage disposal safely.

According to the second invention (Claim 6), since the pressure regulating valve is arranged on the upstream side of the catalyst deodorizing means, when the odorous gas contains combustible gas, an explosion occurs,
Even if the gas thermally expands, the pressure regulating valve operates, the pressure is relieved, and the gas concentration decreases. Therefore, the processing machine itself does not explode, and it is possible to always safely dispose of garbage.

Further, if a photosensor is installed for the pressure regulating valve, the sensor can detect the pressure change due to the explosion phenomenon in the catalyst deodorizing means, and the processor can be stopped urgently. Further, since the user can be informed of this emergency stop by a buzzer or a warning lamp, it is possible to always safely dispose of the garbage.

Further, as in the third aspect of the present invention (invention 8), by providing both the flame backflow prevention filter and the pressure regulating valve, it is possible to carry out the garbage disposal more safely.

In the fourth aspect of the present invention (claim 10), a sensor for detecting at least the combustible gas is provided in the processing chamber, and when the concentration detected by the sensor becomes equal to or higher than a predetermined level, the kitchen waste Since it is configured to automatically stop the processing, the garbage processing can be performed safely.

In the fifth invention (claim 11), a sensor for detecting at least the combustible gas is provided in the processing chamber, and when the concentration detected by the sensor exceeds a predetermined level, the processing is performed. Since it is configured to increase the forced ventilation amount in the room, it is possible to safely carry out the garbage treatment.

[Brief description of drawings]

FIG. 1 is a block diagram illustrating a configuration of an embodiment of a garbage processing machine of the present invention.

FIG. 2 is a cross-sectional explanatory view of the kitchen garbage processing machine of FIG.

FIG. 3 is an enlarged cross-sectional explanatory view of a main part of the catalyst deodorizing means in FIG.

FIG. 4 is a cross-sectional explanatory view of a catalyst deodorizing means having a pressure adjusting valve, which is another embodiment of the kitchen waste treating machine of the present invention.

FIG. 5 is a partial cross-sectional view of a drain pipe showing the condensed water deodorizing unit and the deodorant in FIG.

FIG. 6 is a block diagram showing a system for controlling the operation of the garbage processing machine of the present invention.

FIG. 7 is a flowchart showing an emergency stop operation using the system of FIG.

8 is a flowchart showing a forced ventilation flow rate increasing operation using the system of FIG.

9 is a graph showing changes in the odor level detected by the odor sensor of FIG. 1 over the processing time.

[Explanation of symbols]

 1 Drying Room 2 Condensing Means 3 Condensed Water Tank 4 Blower Means 5 Catalyst Deodorizing Means 31 Catalyst Layer 32 Nichrome Heater 33 Prevention Filter 33a Through Hole 34 Temperature Sensor 35 Pressure Control Valve 36 Photo Sensor

Claims (11)

[Claims] 1. A kitchen waste processing machine comprising a processing chamber for processing garbage and a catalyst deodorizing means having a heating means for deodorizing odorous gas generated from the processing chamber, the upstream side of the catalyst deodorizing means. A garbage disposal device characterized by further comprising a prevention filter for preventing backflow of a flame due to an explosion phenomenon caused by a combustible gas. 2. The garbage disposal according to claim 1, wherein the prevention filter has a plate shape having a plurality of through holes. 3. The garbage disposal according to claim 2, wherein the depth of the through hole of the prevention filter is twice or more the diameter of the through hole. 4. The diameter of the through hole is 2.0 to 3.2 mm.
The kitchen waste processing machine according to claim 3, which is within the range. 5. The garbage disposal according to claim 1, wherein a temperature sensor is provided on the downstream side of the prevention filter, and when the temperature measured by the temperature sensor exceeds a predetermined temperature, the garbage disposal is automatically stopped. . 6. A kitchen waste processing machine comprising a processing chamber for processing garbage, and a catalyst deodorizing means having a heating means for deodorizing odorous gas generated from the processing chamber, the upstream side of the catalyst deodorizing means. A garbage disposal machine characterized in that a pressure regulating valve is provided in the. 7. The open detection means for detecting the opening of the pressure adjusting valve is further provided, and when the open detecting means detects the opening of the pressure adjusting valve, the garbage processing is automatically stopped. 6. The garbage processing machine according to 6. 8. A kitchen waste processing machine comprising a processing chamber for processing garbage, and a catalyst deodorizing means having a heating means for deodorizing odorous gas generated from the processing chamber, the upstream side of the catalyst deodorizing means. In addition, a kitchen garbage processing machine, characterized in that a backflow prevention filter for a flame caused by an explosive phenomenon caused by a flammable gas and a pressure adjusting valve are provided respectively. 9. The garbage disposal according to claim 5 or 7, further comprising alarm means interlocked with the temperature sensor or the opening detection means. 10. A kitchen waste processing machine having a processing room for processing garbage, and a catalyst deodorizing means for deodorizing odorous gas generated from the processing room, wherein at least flammable gas is detected in the processing room. Is provided, and when the concentration detected by the sensor exceeds a predetermined concentration,
A kitchen disposing machine configured to automatically stop the garbage processing. 11. A kitchen waste processing machine having a processing room for processing garbage, and a catalyst deodorizing means for deodorizing odorous gas generated from the processing room, wherein at least flammable gas is detected in the processing room. Is provided, and when the concentration detected by the sensor exceeds a predetermined concentration,
A kitchen waste processing machine, characterized in that it is configured so as to increase the forced air flow rate inside the processing chamber.