JP3791153B2 - 厨 芥 Processing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a soot processing apparatus that includes a temperature sensor for temperature control and that performs soot drying processing.
[0002]
[Prior art]
As a conventional soot treating apparatus, what was shown by FIGS. 10-12 was common.
[0003]
In FIG. 10, 1 is a processing container for storing an object to be processed such as garbage, 2 is a heating means such as a sheathed heater, and 23 is a bottom surface of the processing container 1 so as to detect the atmospheric temperature in the processing container 1. The heating means 2 is heated and controlled so as to reach a predetermined temperature based on the output of the temperature sensor 3 by the arranged temperature sensor. A stirring blade 5 is rotatably arranged in the processing container 1 and is driven by a drive motor 6. The stirring blade 5 and the drive motor 6 constitute a stirring means, and drying is promoted by stirring and pulverizing the workpiece. Reference numeral 7 denotes a suction fan for cooling the apparatus main body and the object to be processed and discharging gas (including water vapor) generated in the processing container 1. Reference numeral 8 denotes an exhaust part that discharges gas, and reference numeral 8 denotes a catalyst provided in an exhaust path between the processing container 1 and the exhaust part 9.
[0004]
The operation of the above configuration is as follows. That is, the heating temperature by the heating means 2 is controlled to a predetermined temperature based on the output of the temperature sensor 23, and the object to be processed is stirred and pulverized by the stirring blade 5, and is generated when the object to be processed is heated by the suction fan 7. The gas is discharged and heat-dried. During processing, gas (including water vapor) generated in the processing container 1 passes through the catalyst 8 to remove odorous components contained therein, and is discharged from the exhaust unit 9.
[0005]
A configuration using a thermistor as the temperature sensor 23 is shown in FIG. In FIG. 11, reference numeral 23 denotes a thermistor that is connected to the DC power source 12 via a resistor 10. Reference numeral 11 denotes a control means for inputting a voltage Vi at a connection point between the thermistor 23 and the resistor 10 and controlling the energization to the heating means 2 according to the voltage Vi so that the control temperature by the heating means 2 becomes a predetermined temperature. To.
[0006]
The input voltage Vi of the control means 11 changes as shown in A of FIG. 12 during the heat treatment of the workpiece. At this time, if the thermistor 23 is disconnected, Vi = 0, and if it is short-circuited, Vi = Vcc (the voltage of the DC power supply 12).
[0007]
[Problems to be solved by the invention]
However, in this saddle processing apparatus, the abnormality of the thermistor 23 is determined based on the Vi value at the processing start time (t = 0). Further, it is assumed that an abnormality occurs in the thermistor 23 in the course of processing, and an abnormality occurs at a value such that Vcc>Vi> 0. However, the ambient temperature and processing are performed as indicated by A and B in FIG. Since the change in Vi varies depending on the amount of soot, it is difficult to determine the abnormality of the thermistor 23 during the process, and there is a problem that even if the thermistor 23 is in a normal state, the abnormality may be erroneously determined. It was.
[0008]
An object of the present invention is to solve these problems and to provide a soot processing device that reliably determines abnormality of a temperature sensor.
[0009]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention determines that the temperature sensor is abnormal when the output of the temperature sensor is equal to or less than a predetermined value when a predetermined time elapses, and stops supplying power to the heating means after the determination. In addition, the operation of the suction fan is continued for a predetermined time and then delayed and stopped, so that it is simple and economical, regardless of the operating conditions such as the quantity and quality of the workpiece, the ambient temperature of the device, and the power supply voltage. Therefore, it is possible to determine whether there is an abnormality in the temperature sensor and to perform an appropriate drying process. Also, by stopping the heating means, if temperature control becomes impossible due to an abnormality in the temperature sensor, the dried soot will stick to the container due to excessive high temperature, or parts for preventing overheating will be activated Nothing will happen. Furthermore, the residual heat of the apparatus can be removed by the delayed operation of the suction fan.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
According to the first aspect of the present invention, there is provided a heating means for drying an object to be processed mainly composed of soot, a processing container for storing the object to be processed, a main body of the soot processing apparatus and the object to be processed, and the processing. A suction fan for discharging gas generated in the container, a first temperature sensor for directly or indirectly detecting the temperature of the object to be processed, and the heating means according to the output of the first temperature sensor The control means determines that the first temperature sensor is abnormal when the output of the first temperature sensor is equal to or less than a predetermined value when a predetermined time elapses , After the determination, the power supply to the heating means is stopped and the operation of the suction fan is continued for a predetermined time and then delayed and stopped , so that the presence or absence of the first temperature sensor abnormality is accurately determined even during the drying process. Can That. Also, by stopping the heating means, if temperature control becomes impossible due to an abnormality in the temperature sensor, the dried soot will stick to the container due to excessive high temperature, or parts for preventing overheating will be activated Nothing will happen. Furthermore, the residual heat of the apparatus can be removed by the delayed operation of the suction fan.
[0011]
The invention according to claim 2 of the present invention is a heating means for heating an object to be processed mainly composed of soot, a processing container for storing the object to be processed, a main body of the soot processing apparatus and the object to be processed, and the processing. A suction fan for discharging the gas generated in the container, an exhaust path for discharging water vapor generated during the drying process of the workpiece , and a second temperature provided in the exhaust path for detecting the temperature of the exhaust A sensor and a control means for determining a drying end timing of the object to be processed from a change in the output of the second temperature sensor, and the control means has a predetermined value when the output of the second temperature sensor has passed a predetermined time. At the following time, it is determined that the second sensor is abnormal, and after the determination, the power supply to the heating unit is stopped, and the operation of the suction fan is continued for a predetermined time and stopped with a delay . Drying process It is possible to determine the presence of abnormalities of the second temperature sensor above. Also, by stopping the heating means, if temperature control becomes impossible due to an abnormality in the temperature sensor, the dried soot will stick to the container due to excessive high temperature, or parts for preventing overheating will be activated Nothing will happen. Furthermore, the residual heat of the apparatus can be removed by the delayed operation of the suction fan.
[0012]
According to a third aspect of the present invention, when the output of the first temperature sensor of the first aspect of the present invention is within a predetermined range continuously for a predetermined time, the control means has the first temperature sensor Since it is determined that there is an abnormality, it is possible to accurately determine whether or not the first temperature sensor is abnormal even during the drying process.
[0013]
Further, the invention according to claim 4 has notifying means for notifying the operation state of the first or second temperature sensor according to any one of claims 1 to 3 , and the control means is a temperature sensor. After the abnormality is determined, the notification means is operated, so that the user can easily recognize whether the apparatus is abnormal.
[0014]
【Example】
Example 1
A first embodiment of the present invention will be described below with reference to FIGS. The same components as those in the conventional example are given the same reference numerals, and detailed description thereof is omitted.
[0015]
In FIG. 1, the first temperature sensor 3 uses a thermistor whose resistance value changes according to temperature. Vi is a voltage input to the control means 11 and is a value obtained by dividing the voltage Vcc of the DC power supply 12 by the resistance value of the first temperature sensor 3 and the resistance value of the resistor 10.
[0016]
The control means 11 controls the power supply to the heating means 2 according to the value of Vi, adjusts the temperature, and performs the soot drying process. Further, the control means 11 controls the energization of the heaters of the drive motor 6, the suction fan 7, and the catalyst 8 shown in FIG.
[0017]
The operation of the above configuration is as follows. FIG. 2 is a characteristic diagram showing a change in the input voltage Vi during the drying process. A in the figure shows the characteristic of Vi at a room temperature of about 25 ° C., which is room temperature, which is heated from the time t = 0 at the start of processing and increases as the temperature rises. When Vth is reached, the power supply to the heating means 2 and the interruption are repeated, and the temperature is adjusted to a substantially constant temperature.
[0018]
Also, B in the figure shows the characteristics when it is used below freezing point such as in winter in cold regions, and Vi starts from a value lower than A because the ambient temperature of the dredging device is low, and then compared with A Although the time to reach Vth becomes longer, the temperature is adjusted in the same manner as A.
[0019]
At this time, the predetermined time ta and the predetermined voltage Va are set to points as shown in FIG. That is, Vi is set to satisfy Va> Va at the time of t = ta in the lowest temperature condition (characteristic shown by B in the drawing) in which the soot treating apparatus is used.
[0020]
Then, as shown in FIG. 3, the control means 11 starts energizing the heating means 2 with the start, and counts time t. If the time elapses and t = ta, the temperature sensor 3 is determined to be abnormal. That is, when the input voltage Vi> Va when the predetermined time ta elapses, it is determined that the temperature sensor 3 is normal, and otherwise the temperature sensor 3 is abnormal. Further, the control means 11 continues the drying process until the time ta until the abnormality determination of the temperature sensor 3 is reached.
[0021]
It should be noted that the abnormality determination can be performed quickly by setting ta as short as possible. These should be determined according to the structure and performance of the soot treatment apparatus. In addition, in this embodiment, the mounting position of the temperature sensor 3 is the bottom surface of the processing container similar to the conventional one, but the position is not particularly limited, and the temperature of the object to be processed can be detected directly or indirectly. Any location is acceptable.
[0022]
(Example 2)
Next, a second embodiment of the present invention will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the component same as the past, and the description is abbreviate | omitted.
[0023]
As shown in FIG. 5, the second temperature sensor 13 is provided in the exhaust path 14 to detect the temperature of the exhaust gas during the drying process and determine the end time of the drying process. The circuit block of FIG. As shown in the figure, the output Vi of the second temperature sensor 13 is input to the control means 11 with the same configuration as that of the first temperature sensor 3 of the first embodiment.
[0024]
The operation of the control means 11 in this embodiment with this configuration is as follows. FIG. 6 is a characteristic diagram showing a change in the input voltage Vs to the control means 11 during the drying process. In the figure, C is a characteristic at about 25 ° C., D is a characteristic when it is used below freezing point such as in a cold region in winter, and the input voltage Vs is after the start of the drying process (t = 0). As the object to be processed is heated, the exhaust gas temperature gradually rises and becomes maximum as the drying process proceeds, and then the water vapor contained in the exhaust gas decreases. Therefore, the input voltage Vs Has the characteristic of gradually decreasing.
[0025]
At this time, the predetermined time tb and the predetermined voltage Vb are set to points as shown in FIG. That is, it is set such that Vs> Vb at the time of t = tb under the condition of the lowest temperature that the soot treating apparatus will be used (characteristic shown by D in the figure).
[0026]
Then, the control means 11 determines that the temperature sensor 13 is normal if Vs> Vb when t = tb, and that the temperature sensor 13 is abnormal otherwise.
[0027]
Note that tb can be set as short as possible so that abnormality determination can be performed quickly. These should be determined empirically depending on the structure and performance of the soot treatment apparatus.
[0028]
Example 3
Next, Embodiment 3 of the present invention will be described with reference to FIG. Since the basic configuration is the same as that of the first embodiment, the control means that is a feature of this embodiment will be described.
[0029]
The operation of the control means 11 in the present embodiment is as follows. When the control means 11 controls the heating means 2, the input voltage Vi fluctuates because the heating means repeats ON / OFF as shown by the broken line (when the temperature sensor 3 is normal) shown in FIG. When the sensor 3 is abnormal and fails, for example, with a certain resistance value, the input voltage Vi becomes constant regardless of changes in time as shown in FIG. Therefore, if the input voltage Vi does not change during the predetermined time Tc, the temperature sensor 3 is determined to be abnormal.
[0030]
Note that the measurement start time of the predetermined time Tc starts from the time when the input voltage Vi changes, and the measurement time is reset every time the input voltage Vi changes. Also, how much the input voltage Vi changes should be determined according to the structure and performance of the soot processing apparatus.
[0031]
(Example 4)
Next, a fourth embodiment of the present invention will be described with reference to FIG. Since the basic configuration is the same as in the first and second embodiments, the control means that is a feature of this embodiment will be described.
[0032]
As shown in FIG. 8, the control means 11 performs the temperature sensor abnormality determination shown in the first and second embodiments, and after determining that the temperature sensor 3 or 13 is abnormal in this determination, stops the heating means 2. The suction fan 7 is stopped with a delay of Tf. In this case, after the heating means 2 is stopped, the suction fan 7 continues to rotate in order to remove the residual heat of the apparatus. The rotation time of the suction fan 7 may be a fixed time Tf, or may be a variable time setting according to the processing time from the start of processing.
[0033]
(Example 5)
Next, a fifth embodiment of the present invention will be described with reference to FIG. Since the basic configuration is the same as in the first and second embodiments, the control means that is a feature of this embodiment will be described.
[0034]
The operation of the control means 11 in the present embodiment is as follows. As shown in FIG. 9, the control means 11 performs abnormality determination of the temperature sensor shown in the first and second embodiments, and after determining that the temperature sensor 3 or 13 is abnormal in this determination, the control means 11 is operated.
[0035]
The notification means 14 (not shown) may be notified by sound using a buzzer or the like, or may be notified by light or the like using an LED or the like. In each of the above embodiments, the structure is described in which the heater is heated from the bottom of the processing container. However, the structure is such that warm air is flowed into the processing container to dry the object to be processed. A similar configuration can also be adopted for a temperature sensor for detecting.
[0036]
【The invention's effect】
According to the first aspect of the present invention, since the presence or absence of abnormality of the temperature sensor is determined based on the time condition and the output voltage, when the abnormality occurs in the temperature sensor for temperature adjustment, the ambient temperature is affected. Therefore, it is possible to reliably determine the abnormality, and when normal, there is no erroneous determination of abnormality, and the soot can be dried as intended. Also, the dried candy will not stick to the container. Furthermore, it becomes possible to remove the residual heat of the processing apparatus.
[0037]
According to the second aspect of the present invention, since the presence or absence of abnormality of the temperature sensor is determined based on the time condition and the output voltage, when the abnormality occurs in the temperature sensor for determining the end timing, the ambient temperature or the like is set. Abnormality can be reliably determined without being affected, and when normal, there is no erroneous determination of abnormality, and the end time can be determined as intended. Also, the dried candy will not stick to the container. Furthermore, it becomes possible to remove the residual heat of the processing apparatus.
[0038]
According to the third aspect of the present invention, since the presence / absence of a temperature change is detected and the presence / absence of an abnormality of the temperature sensor is determined, when an abnormality occurs in the temperature sensor for temperature adjustment, Abnormality can be reliably determined at any time, and when it is normal, there is no erroneous determination of abnormality, and soot can be dried as intended.
[0039]
According to the invention described in claim 4 of the present invention, when the abnormality of the temperature sensor is detected, the abnormality is notified, so that the user can recognize the abnormality of the bag processing apparatus and can easily deal with a repair request or the like.
[Brief description of the drawings]
FIG. 1 is a circuit block diagram of a temperature sensor portion of a soot treating apparatus according to a first embodiment of the present invention. FIG. 2 is a characteristic diagram of an input voltage of the coffin treating apparatus. FIG. 5 is a circuit block diagram of the temperature sensor portion of the soot treatment device in Embodiment 2 of the present invention. FIG. 5 is a cross-sectional view of the coffin treatment device. FIG. FIG. 8 is a characteristic diagram of input voltage in the third embodiment. FIG. 8 is a flowchart in the fourth embodiment of the present invention. FIG. 9 is a flowchart in the fifth embodiment of the present invention. Circuit block diagram of temperature sensor part of soot processing device [Fig. 12] Characteristic diagram of input voltage of soot processing device [Explanation of symbols]
2 Heating means 3 First temperature sensor 11 Control means 13 Second temperature sensor 14 Exhaust path

Claims (4)

Heating means for drying the object to be processed mainly composed of soot, a processing container for storing the object to be processed, and cooling the main body of the soot processing apparatus and the object to be processed and discharging the gas generated in the processing container A suction fan; a first temperature sensor that directly or indirectly detects the temperature of the workpiece; and a control unit that controls the heating unit according to an output of the first temperature sensor. The means determines that the first temperature sensor is abnormal when the output of the first temperature sensor is equal to or less than a predetermined value when a predetermined time has elapsed, and after the determination, supplies power to the heating means. While stopping, the operation | movement of the said suction fan continues for a predetermined time, delays, and stops . A heating means for heating the object to be processed mainly composed of soot, a processing container for storing the object to be processed, and a soot body for cooling the soot processing apparatus body and the object to be processed and exhausting gas generated in the processing container A suction fan, an exhaust path for discharging water vapor generated during the drying process of the workpiece, a second temperature sensor provided in the exhaust path for detecting the temperature of the exhaust, and an output of the second temperature sensor Control means for determining the drying end timing of the object to be processed from the change of the second temperature sensor, and when the output of the second temperature sensor is equal to or less than a predetermined value when the predetermined time has elapsed, the second temperature sensor It is determined that there is an abnormality, and after the determination, the power supply to the heating means is stopped, and the operation of the suction fan is continued for a predetermined time and stopped with a delay .   The control means determines that the first temperature sensor is abnormal when the output of the first temperature sensor is continuously within a predetermined range for a predetermined time.厨 芥 Processing device. Has informing means for informing an operating state of the first or second temperature sensor, the control means, after determining the abnormality of the temperature sensor, according to claim 1 to 3 which is characterized by actuating said alarm means The soot processing apparatus of any one of Claims.

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