JP2008237999A - Disposer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To surely detect a foreign matter in garbage by contriving the installation method of a foreign matter detection part in a crushing chamber. <P>SOLUTION: In the disposer with a feed port 2 attached to the water discharge port of a kitchen sink 1 for crushing the garbage fed from the feed port 2 to the crushing chamber 10, a plurality of metal sensors 5-7 with a hierarchical structure are provided in the middle of a route from the feed port 2 to the bottom part of the crushing chamber 10. With this configuration, the garbage inside the crushing chamber 10 is detected from a plurality of hierarchies and the foreign matter mixed in the garbage is detected without omission. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a disposer applicable to a sink such as a kitchen of a general house or a commercial kitchen. Specifically, the crushing chamber into which the slag is put is equipped with a plurality of foreign matter detectors having a hierarchical structure, so that the slag in the crushing chamber can be detected from a plurality of levels, and foreign matter mixed in the slag can be detected without exception. It is what I did.

  Currently, disposers are sometimes laid in sinks of sinks such as kitchens in general houses and commercial kitchens. The disposer is attached mainly to the lower surface side of the sink, and crushes garbage such as garbage thrown in from the sink and discharges it together with water.

  Previously, problems such as contamination of sewage by crushed dredges were pointed out, but now local governments permit the installation of disposers that meet certain standards. Furthermore, in a housing complex such as an apartment, a system is also introduced in which a common wastewater treatment tank is provided to purify the water discharged from the disposer and then drain it into sewage. Since these disposers can process garbage immediately, they are highly convenient for users and are expected to reduce the amount of garbage collected for local governments. .

  However, many of these disposers are crushed by a crushing blade portion that rotates a basket. Accordingly, when foreign matter such as a spoon is mistakenly inserted, there is a risk that the foreign material will pop out due to contact with the rotating crushing blade portion or deform the crushing blade portion.

  FIG. 7 is a schematic cross-sectional view showing a configuration example of a disposer 200 as a conventional example. The disposer 200 shown in FIG. 7 is provided with a crushing chamber 210 for throwing potatoes, a crushing blade portion 220 for crushing processing, a driving motor 231 and a metal sensor 4 for detecting foreign matter, and is attached to the lower surface side of the sink 1. Yes. The disposer 200 is a continuous throwing type disposer that, when a start command is input from a control unit (not shown), rotates the crushing blade part 220 by a motor 231 and continuously crushes the soot sequentially put into the crushing chamber 210. is there.

  The disposer 200 is provided with the metal sensor 4 as the safety device described above. Here, the metal sensor 4 is installed in an annular shape on the outer peripheral portion of the upper portion of the crushing chamber 210, and detects a metallic foreign matter passing through the inside of the ring.

8A and 8B are diagrams illustrating an example of foreign object detection of the disposer 200. FIG. In FIG. 8A, the horizontal axis represents time, and the vertical axis represents the detection signal S1 level of the metal sensor 4. The detection signal S1 is a signal output from the metal sensor 4, and is normally at a low level, and generates a pulse signal P1 when a foreign object is detected. In FIG. 8B, the horizontal axis represents time, and the vertical axis represents the control signal S2 level of the crushing process. The control signal S2 is a drive signal for the drive motor 231 and is normally at the Low level, and is inverted to the High level when the crushing process is executed.
When the activation command is input at time T1, the control signal S2 level shown in FIG. 8B becomes High level, and the crushing process by the disposer 200 is started. During the crushing process, the disposer 200 sequentially crushes the soot that is input. Here, for example, when a foreign substance is thrown in at time T2 and a pulse signal P1 is generated in the detection signal S1 shown in FIG. Stop the crushing process. Here, the predetermined delay time is set to a time suitable for removing noise of the detection signal S1. Thus, in the disposer 200, the metal sensor 4 detects the foreign material thrown in during the crushing process, and controls the crushing process.

  In relation to this, a disposer and a sink with a disposer as disclosed in Patent Documents 1 to 3 are disclosed. According to the disposer shown in Patent Document 1, a connecting pipe of a non-metallic elastic member that connects the disposer and the sink is provided, and the disposer is connected to the mounting pipe of the sink via the connecting pipe, and the outer peripheral surface of the connecting pipe is connected to the disposer. A metal sensor is attached, and metal foreign matter is detected at the initial stage of introduction through the connecting pipe. By doing so, the operation can be stopped before the metal foreign object is blown off by the rotary blade plate, and the metal foreign object can be easily removed.

  According to the disposer as shown in Patent Document 2, an opening is provided on the inner wall of the crushing chamber, and a foreign matter recovery box attached so as to cover the outside of the opening, a door for opening and closing the opening, and a door opening and closing device are provided. When it is detected that foreign matter has been introduced into the crushing chamber, the door is opened to allow foreign matter to jump into the foreign matter collection box and stored in the foreign matter collection box. By doing so, the stored foreign matter can be taken out by opening the lid of the foreign matter collection box.

  According to the sink with a disposer shown in Patent Document 3, a metal detector capable of detecting a metal product in garbage disposed in the sink is disposed in the sink and disposed in the disperser crushing chamber (crushing chamber). It is provided upstream from the trash input. By doing so, the crushing device in the disposer can be stopped before the metal product detected by the metal detector reaches the crushing chamber.

Japanese Unexamined Patent Publication No. 2000-157886 (page 3, FIG. 1) JP 2002-59022 A (2nd page, FIG. 1) JP 2001-145840 A (2nd page, FIG. 1)

  However, according to the disposer and the sink equipped with the disposer according to the conventional example, one foreign matter detection unit is provided at a position that seems to be most suitable for the sink or the disposer, and mainly detects the foreign matter thrown in during the crushing process. To do. Therefore, when these are applied to a batch throw-in type disposer, for example, a foreign matter detection unit installed on the upper side may not be able to detect foreign matter already mixed in the bag when the power is turned on. Further, if the sensitivity of the foreign matter detection unit is increased in order to detect a wide range with a single foreign matter detection unit, it may cause a malfunction.

  Accordingly, the present invention has been created in view of the above-described problems, and it is intended to provide a disposer that can detect a crushing chamber from a plurality of hierarchies and can detect all foreign matters mixed in the basket. Objective.

  The disposer according to the present invention is a disposer in which an inlet is attached to a drain of a kitchen sink, and crushes the straw put into the crushing chamber from the inlet, on the way from the inlet to the bottom of the crushing chamber, A plurality of foreign matter detection units having a hierarchical structure are provided.

  According to the disposer according to the present invention, a plurality of foreign substance detection units having a hierarchical structure are provided in the middle of the path through which the soot is introduced. Therefore, since the soot introduced into the crushing chamber from the input port can be detected from a plurality of levels, the foreign matter mixed in the soot can be detected without exception.

  According to the disposer according to the present invention, a plurality of foreign substance detection units having a hierarchical structure are provided in the middle of the path through which the soot is introduced. With this configuration, the soot existing from the vicinity of the input port to the bottom of the crushing chamber can be detected from a plurality of levels, and foreign matter mixed in the soot can be detected without exception. Therefore, when crushing the crushes collected in the crushing chamber in a lump, it is possible to prevent crushing from being carried out on the clogs containing foreign matter, thus preventing damage to the crushing blade and preventing foreign matter from popping out. it can. In addition, damage to foreign matter can be prevented.

  Next, the disposer according to the present invention will be described with reference to the drawings. FIG. 1 is a schematic cross-sectional view showing a configuration example (No. 1) of a disposer 100 as an embodiment of the present invention. 2 and 3 are supplementary explanatory diagrams showing configuration examples (parts 2 and 3) of the disposer 100. FIG.

  A disposer 100 shown in FIG. 1 includes an inlet 2, an outlet 3, metal sensors 5 to 7, a crushing chamber 10, a lid 11, a hopper 13, a crushing unit 20, a motor chamber 30, a rotating shaft 32, and a control device 40 (FIG. 3). The inlet 2 is attached to the drain of the sink 1 of the kitchen, and the straw put into the crushing chamber 10 from the inlet 2 is crushed.

  The disposer 100 of this example is a batch-type disposer, and the claw accumulated in the crushing chamber 10 is crushed collectively after the inlet 2 of the crushing chamber 10 is closed by the lid 11. To work. Further, the disposer 100 is provided with metal sensors 5 to 7 as safety devices, and the disposer 100 automatically executes a foreign object detection process before the crushing process, and crushes when a foreign object is detected. The processing is not executed.

  The hopper 13 is a part attached to the sink 1. The hopper 13 is formed in a substantially cylindrical shape with a resin such as reinforced plastic. The inside of the hopper 13 forms a container-shaped crushing chamber 10. The crushing chamber 10 has an upper side inlet 2 attached to the sink 1 of the sink, has a bottom surface 10a having a predetermined inclination on the lower side, and opens a drain port 3 at the lowest position of the bottom surface 10a. . Here, a crushing unit 20 is installed on the lower side of the crushing chamber 10.

  The crushing unit 20 constitutes an example of a crushing blade part, and crushes the wrinkles in the crushing chamber 10. The crushing unit 20 includes a first rotary crushing blade 21, a second fixed crushing blade 22, a third rotary crushing blade 23, a fourth fixed crushing blade 24, and a housing 26. In the housing 26 that is a cylindrical container member, The four-layer crushing blade shown in the perspective view of FIG. 2 is accommodated, and is configured as one laminated blade type crushing unit.

  Here, the first rotary crushing blade 21 and the third rotary crushing blade 23 are connected to a motor 31 (see FIG. 3) accommodated in the motor chamber 30 via a rotary shaft 32, and the second fixed crushing blade 22 and the second rotary crushing blade 22. The 4 fixed crushing blade 24 is fixed to the housing 26 side. When the motor 31 rotates, the first rotary crushing blade 21 and the third rotary crushing blade 23 rotate together. In contrast, the second fixed crushing blade 22 and the fourth fixed crushing blade 24 do not rotate. The soot introduced into the crushing chamber 10 from the input port 2 is crushed at the sliding contact portion and the meshing portion of each rotary crushing blade and fixed crushing blade. The soot crushed by the crushing unit 20 is discharged from the discharge port 3 to a discharge facility (not shown) together with water that is sequentially supplied.

  On the other hand, the disposer 100 is provided with metal sensors 5 to 7 that constitute an example of a foreign matter detection unit as a safety device. Here, the metal sensors 5 to 7 are provided on the outer peripheral portion of the crushing chamber 10 so as to have a hierarchical structure with different heights, and detect foreign substances in the crushing chamber 10. Further, here, the metal sensor 5 is located on the outer peripheral portion near the inlet 2 on the upper side of the crushing chamber 10, the metal sensor 7 is located on the outer peripheral portion of the crushing unit 20 located on the lower side of the crushing chamber 10, and the metal sensor 6 is It is installed in the substantially middle part on the upper side and the lower side, respectively, and is arranged so as to surround the outer periphery of the inlet 2 and the outer periphery of the crushing chamber 10.

  The metal sensors 5 to 7 are constituted by, for example, ring-shaped magnetic sensors. For example, when a high frequency signal is inputted, the metal sensor 5 senses the magnetic permeability of a magnetic substance existing in the ring-shaped core (inside the ring), and outputs a detection signal S5 corresponding to the magnetic permeability ( (See FIG. 3). Similarly, the metal sensor 6 outputs a detection signal S6, and the metal sensor 7 outputs a detection signal S7. The detection signals S5 to S7 are input to the detection unit 41 of the control device 40.

  As shown in the block diagram of FIG. 3, the control device 40 includes an oscillation unit 42, a detection unit 41, a memory 44, a control unit 43, an operation unit 45, and a buzzer 46. The control device 40 is installed, for example, at a predetermined part on the disposer 100 side or the sink 1 side, and controls a series of foreign object detection processing and crushing processing by the disposer 100.

  The oscillation unit 42 is a part that outputs a high-frequency signal for detection to the metal sensors 5 to 7. The oscillating unit 42 starts outputting a high-frequency signal in response to an activation command from the control unit 43. The metal sensors 5 to 7 to which the high-frequency signal is input from the oscillating unit 42 output detection signals S5 to S7 corresponding to the magnetic permeability of the magnetic material present in the ring-shaped core. A detection unit 41 is connected to the metal sensors 5 to 7 and detection signals S5 to S7 are input.

  The detection unit 41 monitors the detection signals S5 to S7 and outputs a detection signal S3. Here, a memory 44 is further connected to the detection unit 41. The memory 44 constitutes an example of memory means, and here stores the detection levels in the normal state of the detection signals S5 to S7 as reference levels Lt1, Lt2, and Lt3. The reference levels Lt1, Lt2, and Lt3 are determined in advance by the magnetic permeability of the crushing chamber 10 and the crushing unit 20, and are usually set to different values by the metal sensors 5 to 7, respectively. The detection unit 41 reads the reference levels Lt1, Lt2, and Lt3 from the memory 44, executes detection processing based on the reference levels Lt1, Lt2, and Lt3, and outputs a detection signal S3. The control unit 43 is connected to the detection unit 41 and receives the detection signal S3.

  An operation unit 45, a switch SW1, and a buzzer 46 are further connected to the control unit 43. Here, the operation unit 45 is a part that is provided and operated, for example, on the side surface of the sink, and outputs, for example, a crushing process start command (start signal). The control unit 43 sequentially executes the foreign object detection process and the crushing process in accordance with an activation command or the like from the operation unit 45. Further, the control unit 43 outputs a control signal S4, a notification signal S8, and the like according to the detection signal S3 from the detection unit 41.

  The control signal S4 is input to the switch SW1. The switch SW1 is connected between the AC power supply 50 and the motor 31, and opens and closes the electrical connection between the AC power supply 50 and the motor 31. Here, the switch SW1 is turned off (opened) when the control signal S4 is at the low level, and is turned on (conducted) when the control signal S4 is at the high level.

  The notification signal S8 is input to the buzzer 46. The buzzer 46 generates a notification sound in response to the notification signal S8 input from the control unit 43. Here, the buzzer 46 is turned off (stopped) when the notification signal S8 is at the low level, and is turned on (notified) when the notification signal S8 is at the high level. The disposer 100 is configured as described above. Below, the foreign material detection method by the disposer 100 is demonstrated.

  4A to 4C and FIGS. 5A to 5C are diagrams illustrating examples of foreign object detection (No. 1 and No. 2) of the disposer 100. FIG. 4A to 4C, the horizontal axis represents time, and the vertical axis represents the detection signals S5 to S7 levels of the metal sensors 5 to 7. In FIG. 5A, the horizontal axis represents time, and the vertical axis represents the detection signal S3 level. In FIG. 5B, the horizontal axis represents time, and the vertical axis represents the notification signal S8 level. In FIG. 5C, the horizontal axis represents time, and the vertical axis represents the control signal S4 level.

  When an activation command for crushing processing is input from the operation unit 45 at time T3, the disposer 100 first starts foreign matter detection processing. When the foreign object detection process is started, the oscillation unit 42 outputs a high-frequency signal, and the metal sensors 5 to 7 output detection signals S5 to S7 shown in FIGS. The detection signals S5 to S7 change to a high level when the magnetic permeability of the magnetic material is high, and change to a low level when the magnetic substance is low.

  The detection unit 41 to which the detection signals S5 to S7 are input first reads the reference levels Lt1, Lt2, and Lt3 from the memory 44. Here, the detection unit 41 sets allowable levels Lr1, Lr2, and Lr3 that are slightly higher than the reference levels Lt1, Lt2, and Lt3, and compares the allowable levels Lr1, Lr2, and Lr3 with the detection signals S5 to S7. In this example, foreign matter is mixed in the lower side of the crushing chamber 10, and the detection signal S7 shown in FIG. 4C reaches a level L7 higher than the allowable level Lr3 at a time T4 not short of the time T3.

  When any one of the detection signals S5 to S7 becomes higher than the permissible levels Lr1, Lr2, and Lr3, the detection unit 41 generates a pulse signal P2 as the detection signal S3 (see FIG. 5A). Here, the pulse signal P2 is generated at time T4.

  When detecting the pulse signal P2 of the detection signal S3, the control unit 43 inverts the notification signal S8 from Low level to High level at time T5 having a predetermined delay time from time T4 (see FIG. 5B). The buzzer 46 to which the notification signal S8 is input outputs a notification sound (warning sound) from time T5. In this case, the control unit 43 does not invert the control signal S4 at the low level even after the time T5 (see FIG. 5C).

  On the other hand, when the detection unit 41 does not output the pulse signal P2, the control unit 43 inverts the control signal S4 from the low level to the high level at time T5 as shown by a two-dot chain line in FIG. 5C. Then, the switch SW1 is turned on from time T5, and the crushing process by the disposer 100 is started. Here, the time T5 is set after the end time of all foreign matter detection processing. As described above, the foreign object detection process is executed. Below, the crushing processing method of the disposer 100 is demonstrated.

  FIG. 6 is a flowchart showing an example of crushing processing of the disposer 100. In the disposer 100 of this example, after a predetermined basket is accumulated in the crushing chamber 10, the inlet 2 is closed by, for example, the lid 11, the power to the disposer 100 is turned on, and a crushing start command is input. Then, the crushing unit 20 is rotated and the crushing process is executed.

  Here, when a crushing process start command (start signal) is input from the operation unit 45 at time T3, for example, the disposer 100 first executes the above-described foreign matter detection process and then executes the crushing process. With these as processing conditions, in step A1 of the flowchart shown in FIG. 6, the control device 40 monitors whether or not a crushing processing start command has been input. When the activation command is input, the process proceeds to step A2, and first foreign object detection processing is started.

  In step A2, the metal sensors 5 to 7 output detection signals S5 to S7. At this time, the output of the high frequency signal from the oscillation part 42 is started by the starting command from the control part 43, and the metal sensors 5-7 output the detection signals S5 to S7.

  In step A3, the detection unit 41 sets allowable levels Lr1, Lr2, and Lr3. At this time, the detection unit 41 reads the reference levels Lt1, Lt2, and Lt3 from the memory 44, and sets the allowable levels Lr1, Lr2, and Lr3.

  In step A4, the detection unit 41 determines whether or not the detection signals S5 to S7 are larger than the allowable levels Lr1, Lr2, and Lr3. Here, the detection unit 41 compares the detection signals S5 to S7 with the permissible levels Lr1, Lr2, and Lr3, and any one of the detection signals S5 to S7 is higher than the permissible levels Lr1, Lr2, and Lr3, respectively. When it is larger, the process proceeds to Step A5, and when any of the detection signals S5 to S7 is smaller than the allowable levels Lr1, Lr2, Lr3, the process proceeds to Step A6.

  When the process proceeds to step A5, the detection unit 41 outputs the pulse signal P2 to the detection signal S3. Here, as an example, the detection unit 41 outputs a pulse signal P2 having a predetermined width from time T4 when the detection signal S7 becomes equal to or higher than the allowable level Lr3.

  In step A6, the control unit 43 determines whether or not the pulse P2 is output to the detection signal S3 between time T3 and time T5. Here, the control unit 43 monitors the detection signal S3 from time T3 to time T5, and determines whether or not the pulse signal P2 is output as the detection signal S3. If the pulse signal P2 is not output as a result of the determination, the process proceeds to step A10, and if the pulse signal P2 is output, the process proceeds to step A7.

  When the process proceeds to step A7, the buzzer 46 outputs a notification sound. At this time, the control unit 43 inverts the notification signal S8 from Low level to High level from time T5. When the notification sound is output by the buzzer 46, the process proceeds to step A8 while the control signal S4 is locked at the low level.

  In step A8, the control unit 43 monitors whether or not a stop command for the buzzer 46 has been input. At this time, the control unit 43 proceeds to step A <b> 9 when a user who has acknowledged that a foreign object has been detected inputs a notification sound stop command from the operation unit 45. When the notification sound stop command is not input, the process returns to step A1 without stopping the notification sound.

  When the process proceeds to step A9, the control unit 43 inverts the notification signal S8 to Low and stops the notification sound by the buzzer 46. However, even if the notification sound is stopped, the control signal S4 remains at the low level and the crushing process is not started. When the notification sound by the buzzer 46 is stopped, the process returns to Step A1.

After returning to step A1, the control device 40 monitors whether or not a crushing start command is input after the user removes the foreign matter in the basket.
When all foreign matters are removed and the activation command is input again, it is determined in step A6 that the pulse signal P2 is not output as the detection signal S3. In this case, the process proceeds to Step A10.

  In step A10, the control unit 43 turns on the switch SW1. Here, the control unit 43 inverts the control signal S4 to a high level as indicated by a two-dot chain line in FIG. 5C at time T5, and turns on SW1. In this way, the foreign object detection process is completed, and the process proceeds to Step A11.

  In step A11, the motor is rotated so that the crushing unit 20 executes the crushing process. The crushing process by the disposer 100 is performed as described above.

  Thus, according to the disposer 100 as an embodiment of the present invention, the plurality of metal sensors 5 to 7 provided in the crushing chamber 10 have a hierarchical structure. Therefore, it is possible to detect all the foreign matter mixed in, for example, the upper side, the middle part, and the lower side in the crush by detecting the claw in the crushing chamber 10 from a plurality of levels. Therefore, when crushing the crushes collected in the crushing chamber 10 in a lump, it is possible to prevent the crushing unit 20 from being damaged and prevent the crushing unit 20 from being damaged. Can be prevented.

  Further, in this example, the foreign object detection process from step A2 to A9 is executed at time T3 when the start command of the crushing process is input at step A1, but the present invention is not limited to this, and the disposer 100 is turned on. The foreign object detection process may be executed at time T3. In this case, since the foreign object detection process may be completed before inputting the crushing process start command, the time difference from the crushing process start command to the execution of the crushing process can be shortened.

  Here, the batch-dispersing type disposer 100 has been described. However, the present invention is not limited thereto, and the present invention can be applied to a continuous type disposer.

  Many continuous disposers are used in such a manner that the input port of the firewood is always open, and the firewood is sequentially introduced from the input port into the crushing chamber according to the progress of the crushing process. Therefore, for example, when foreign matter is mixed in the crushing chamber before the crushing process is performed, the foreign matter may jump out at the same time as the crushing process is started. Furthermore, in the continuous disposer, there is a risk that foreign matter may enter the crushing chamber together with the sputum during the crushing process.

  When the present invention is applied to a continuous disposer, for example, when the power is turned on, the foreign matter is detected in the crushing chamber 10 by a plurality of metal sensors 5 to 7 prior to the crushing process. When it is detected, the crushing process is not performed, and during the crushing process, the foreign object detection process is performed at the same time. For example, when the metal sensor 5 near the inlet detects a foreign object, the crushing process is performed. It is good to stop.

  By doing so, foreign matter detection processing can be executed when the continuous disposer is turned on and during the crushing processing of the continuous disposer. Both incoming foreign objects can be reliably detected. Accordingly, it is possible to prevent foreign matters from jumping out from the inlet.

  In this example, the three metal sensors 5 to 7 are installed in the crushing chamber 10. However, the present invention is not limited to this, and for example, a pair of metal sensors can be provided in the upper and lower portions of the crushing chamber 10. Further, four or more metal sensors may be installed in the crushing chamber 10.

  In this example, a warning sound is generated by the buzzer 46. However, the present invention is not limited to this. For example, a light emitting diode or a liquid crystal screen is used instead of or together with the sound notification. An announcement may be made.

  The oscillation level of the high frequency signal of the oscillation unit 42 or the difference (allowable error) between the reference levels Lt1, Lt2, Lt3 and the allowable levels Lr1, Lr2, Lr3 stored in the memory 44 is adjusted by the operation unit 45, for example. You may be able to do it. In this way, it is possible to execute foreign object detection processing at a detection level according to the user's wishes. However, these adjustment mechanisms should not be set to be more than an allowable error that can detect a large metal foreign object such as a spoon.

  The present invention is extremely suitable when applied to a sink in a kitchen of a general house or a commercial kitchen.

It is a schematic sectional drawing which shows the structural example (the 1) of the disposer 100 as embodiment. It is a supplementary explanatory view showing a configuration example (part 2) of the disposer 100. FIG. 10 is a supplementary explanatory diagram illustrating a configuration example (No. 3) of the disposer 100; It is a figure which shows the foreign material detection example (the 1) of the disposer. It is a figure which shows the foreign material detection example (the 2) of the disposer. 5 is a flowchart illustrating an example of a crushing process of the disposer 100. It is a schematic sectional drawing which shows the structural example of the disposer 200 as a prior art example. It is a figure which shows the foreign material detection example of the disposer.

Explanation of symbols

4-7 ... Metal sensor, 10 ... Crushing chamber, 20 ... Crushing unit, 31 ... Motor, 40 ... Control device, 100, 200 ... Disposer

Claims (8)

In the disposer in which the inlet is attached to the drain of the sink of the kitchen, and the crushing processing is performed on the culm thrown into the crushing chamber from the inlet.
On the way from the input port to the bottom of the crushing chamber,
A disposer comprising a plurality of foreign matter detection units having a hierarchical structure. The foreign object detector
The disposer according to claim 1, wherein the disposer is configured by a ring-shaped magnetic sensor that senses magnetism, and the magnetic sensor is disposed so as to surround the path. The foreign object detector
The disposer according to claim 1, wherein the disposer is provided on at least an upper side and a lower side of an outer peripheral part of the crushing chamber. In the foreign object detection unit,
The disposer according to claim 1, further comprising a sensitivity adjusting means for detecting foreign matter. The disposer is
2. The disposer according to claim 1, wherein the disposer is a collective throwing-type disposer that collectively crushes the soot accumulated in the crushing chamber after closing the inlet of the crushing chamber. The disposer is
A control unit for controlling the crushing process;
The controller is
Memory means for storing, as a reference level, a detection signal of the foreign matter detection unit when no slag is put into the crushing chamber;
The reference level is read from the memory means, and a detection unit to which the current detection signal is input from the foreign matter detection unit,
The detector is
The disposer according to claim 1, wherein foreign substances are detected by comparing the reference level with the detection signal. The disposer is
An operation unit provided near the sink and operated, and outputting an activation signal of the crushing process;
The controller is
The disposer according to claim 6, wherein when the activation signal is input from the operation unit, a foreign matter detection process is performed prior to the crushing process. The controller is
The disposer according to claim 6, wherein foreign matter detection processing is performed during the crushing processing of the disposer.

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