JP4692185B2 - Disposer and sink with disposer - Google Patents

Description

  The present invention relates to a disposer that grinds garbage with water and a sink equipped with the disposer.

  In recent years, the spread of disposers used to treat garbage is rapidly expanding, and various disposers are sold so that users can comfortably use them, such as optimal crushing, vibration and noise reduction.

Due to the characteristics of the disposer product, it is necessary to pay close attention to safety devices. In addition to the manual reset-type overload protection device, which is specified in the Electrical Appliance and Material Safety Law, in recent years, in addition to current fuses and leakage breakers, control means using a microcomputer, etc. are provided to prevent overcurrent and overvoltage. Detects, issues an alarm, shuts off the motor power, properly determines the load applied to the crushing part according to the type and size of the pulverized material, and automatically selects the operation speed suitable for the load and overloads In the case of, various ideas such as stopping are devised (see, for example, Patent Documents 1 and 2).
JP 10-43617 Japanese Patent No. 3337946

  However, in the conventional technology, for example, when power supply to the motor unit is interrupted due to overload of the motor unit due to excessive input of garbage, for example, power is continuously supplied to control units other than the motor unit, When performing maintenance such as removing garbage that has been thrown in, there is a case where the user has to unplug the outlet, which is inconvenient.

  The present invention solves such a conventional problem, and provides a disposer that can be easily maintained by a user without malfunctioning by shutting off all power supply when the motor unit is overloaded. With the goal.

In order to achieve the above object, the present invention provides a crushing unit that crushes input garbage, a motor unit that drives the crushing unit, a control unit that controls the output of the motor unit, the motor unit, and the control A power supply unit that supplies power to the unit, a load detection unit that detects a load of the motor unit, a power cutoff unit that blocks power supplied from the power supply unit to the motor unit and the control unit, and the power source A battery switch for returning the shut-off means and a lid switch that is detachably attached to a charging port for throwing garbage into the crushing part, and the control part is detected by the load detecting means. A control mode in which when the load on the motor unit is greater than or equal to a predetermined value, the power shut-off unit is operated to shut off the power supplied from the power supply unit before the motor unit and the control unit; It is characterized in that it is.

  With this configuration, when the load on the motor unit becomes equal to or greater than a predetermined value, supply of power to all the parts (the motor unit and the control unit) is blocked by the power cut-off unit.

  The present invention has an effect of providing a disposer that can be easily maintained by a user without malfunctioning by shutting off all power supply when the motor unit is overloaded.

  Hereinafter, specific embodiments to which the present invention is applied will be described in detail with reference to the drawings.

An embodiment of the present invention includes a crushing unit that crushes input garbage, a motor unit that drives the crushing unit, a control unit that controls the output of the motor unit, and a power source for the motor unit and the control unit. A power supply unit that supplies power, a load detection unit that detects a load of the motor unit, a power cut-off unit that cuts off power supplied from the power supply unit to the motor unit and the control unit, and the power cut-off unit A battery switch to be restored and a lid switch that is detachably attached to an inlet for throwing in garbage into the crushing part, and a power switch for the power supply return switch . When the load is greater than or equal to a predetermined value, the power cut-off means is operated to have a control mode in which the power supplied from the power supply unit is cut off before the motor unit and the control unit.

  As a result, it is possible to provide a disposer that can be easily maintained by the user without malfunctioning by cutting off all power supply when the motor unit is overloaded.

  Further, the control unit detects the load again after reversing the motor unit at least once when the load of the motor unit detected by the load detection unit is equal to or greater than a predetermined value, and activates the power shut-off unit when the load is equal to or greater than the predetermined value. In this case, a control mode for cutting off the power supplied from the power supply unit may be provided.

  In this case, by reverse rotation, the state of biting of crushed materials and foreign matters that have caused overload is often released, and when this happens, the load of the motor unit detected by the load detection means is predetermined. The disposer can continue to operate as follows. On the other hand, if the load is equal to or greater than the predetermined value even when the rotation is reversed, the supply of power to all parts of the disposer is cut off by the power cut-off means. As a result, it is possible to provide a safer and less time-consuming disposer for the user by eliminating the frequent interruption of the power supply of the disposer due to overload.

In addition, when the load of the motor unit detected by the load detection unit is greater than or equal to a predetermined value, the user is notified that the power supply has been shut down due to an overload by informing the user before stopping the driving of the motor unit. It can be recognized and prevented from being mistaken for equipment failure.

  Further, if a switch for returning the power shut-off means is arranged, the convenience at the time of power return can be enhanced. In addition, if the switch is configured with a lid provided at the inlet that feeds garbage into the crushing section, the lid is always handled when the disposer is used. The power can be restored without handling a special part, and it does not take time to restore the power.

  Moreover, if the disposer is incorporated in the sink, the usability in the kitchen can be greatly enhanced.

  Embodiments of the present invention will be described below with reference to the drawings.

[Example 1]
FIG. 1 is a side view illustrating a schematic configuration of the disposer according to the first embodiment.

  As shown in this figure, the disposer has a main body 3 suspended and attached to a drain 2 of a water tank of a sink 1 made of stainless steel, artificial marble, or the like. 1 is attached through the top surface.

  The water supply channel 4 is provided with a faucet 6 that is manually opened and closed by a user to adjust the amount of water, and the water discharge port of the water supply channel 4 is provided at a position above the drainage port 2 downward. Yes.

  The main body 3 of the disposer has a crushing chamber (crushing part) 9 in which a crushing blade 8 is arranged at the upper part, and a motor (motor part) 10 as a driving source for the crushing blade 8 at the lower part. . Above the crushing chamber 9 is provided a garbage input 11 connected to the drain port 2, and a lid switch 12 serving as a lid for the operation switch and the garbage input 11 is attached to and detached from the garbage input 11. It is attached as possible.

  The garbage input from the garbage input port 11 is introduced into the crushing chamber 9 together with water, pulverized by the pulverization blade 8, and then discharged from the discharge port 13 provided on the side surface of the main body 3. Then, after passing through a discharge pipe 14 connected to the discharge port 13, the water is drained to the outside of the sink 1 through a drain pipe 15 buried under the floor and provided with a downward slope in the direction of drainage.

  Further, a control unit 16 incorporating a central processing unit (CPU) is attached to the lower side surface of the main body 3, and a power cord 17 as a power supply unit is connected to the lower part of the control unit 16, and the control unit A power switch (power cutoff means) 18 and a buzzer 19 that can manually turn on and off the power are installed on the front surface of 16.

  2 and 3 show the configuration of the lid switch 12.

  As shown in FIG. 2, when the lid switch 12 is simply attached to the garbage input port 11, the switch is turned off. In this state, since the claw 24 of the lid switch 12 is in the position of the notch 25 of the drain port 2, the lid switch 12 can be attached and detached.

  As shown in FIG. 3, when the knob 26 of the lid switch 12 is rotated to the on position from this state, the lid switch 12 is turned on. In this state, the claw 24 is positioned on the lower side of the upper plate 27 of the drain port 2, so that the lid switch 12 cannot be removed.

  Thus, the lid switch 12 can be attached / detached only when it is off, and the motor 10 is not driven by mistake during attachment / detachment.

  Further, when the lid switch 12 is attached to the insertion port 11 at the off position, the controller 16 can recognize that the lid switch 12 is mounted.

  The water supply flows through the slit 28 provided in the lid switch 12 and flows into the grinding chamber 9 from the garbage input port 11.

  FIG. 4 shows an outline of the circuit configuration. All power to the disposer is supplied from a power cord (power supply unit) 17 through a power switch 18. Further, the power switch 18 has a configuration having a reset function by a solenoid as shown in FIG. 5. When the reset signal is received from the control unit 16 through the signal line 20 in the ON state, the solenoid is activated, The switch 18 is turned off.

  The power switch 18 is a seesaw type switch, and the on / off state can be grasped from the appearance of the switch. Further, as the power switch 18, it is preferable to use a two-pole structure (illustrated example) in which both the ground side and the non-ground side are cut off in consideration of a ground fault.

  Further, the control unit 16 is provided with a current sensor 21 that detects a current of the motor 10 as a load detection unit of the motor 10. As the current sensor 21, a low resistor is inserted in series in the motor drive circuit to detect a voltage between both ends of the resistor, or a non-contact type sensor called CT is used.

  With the above configuration, the operation of the disposer in the first embodiment will be described with reference to the float of FIG.

  First, the lid switch 12 is removed from the garbage input port 11, the garbage is introduced into the grinding chamber 9 from the garbage input port 11, and the lid switch 12 is attached to the garbage input port 11. In this state, the faucet 6 is opened and water supply is started, and then the lid switch 12 is turned on (step ST1).

  When the lid switch 12 is turned on, the motor 10 is started and the crushing blade 8 is rotated so that the garbage is pulverized together with water (step ST2).

  Garbage crushed with water is discharged from the discharge port 13 to the discharge pipe 14, then flows through the drain pipe 15 installed under the floor, and is drained out of the sink 1.

  When the user determines that the garbage has been crushed and turns off the lid switch 12, the control unit 16 immediately stops outputting the output to the motor 10, and the operation ends (Y in step ST4, step ST6).

  Even when the user does not turn off the lid switch 12, the control unit 16 stops the output transmission to the motor 10 after a certain time (T1) has elapsed from the driving of the motor 10 to prevent the motor 10 from being heated. Thus, the operation ends (Y in step ST5, step ST6).

  Further, during operation, the current sensor 21 always detects the energization current of the motor 10, and when the control unit 16 determines that the load is overloaded, the buzzer 19 notifies the user and stops the motor 10. (Y in step ST3, step ST7, step ST8). Note that the current sensor 21 detects the energization current of the motor 10 even in the standby state. If the current is detected in the standby state (the motor 10 is stopped), it is determined that the buzzer is abnormal. The buzzer 19 is sounded with a sound different from the sound.

  After stopping the motor 10, the control unit 16 outputs a reset signal to the signal line 20 of the power switch 18 and turns off the power switch 18. Thereby, the supply of power to each part (motor 10 and control part 16) of the disposer is forcibly cut off (step ST9).

  The power is restored by manually turning on the power switch 18 that has been turned off (step ST10, step ST11).

  As described above, according to the first embodiment, when the overload of the motor 10 due to excessive input of garbage or the like is detected by the current sensor 21 and becomes a value equal to or greater than a predetermined value, the control unit 16 causes the user to A notification is given by the buzzer 19, and the power switch 18 is turned off to cut off all power supply to the disposer. Therefore, it is possible to provide a disposer that does not malfunction and can be easily maintained by the user.

[Example 2]
In the second embodiment, when the load of the motor unit detected by the load detection unit is greater than or equal to a predetermined value, the motor unit is reversed at least once and then the load is detected again. The shut-off means is operated to shut off the power supplied from the power supply unit. Since the component configuration is the same as that of the first embodiment, detailed description thereof is omitted.

  The operation of the disposer in the second embodiment will be described with reference to the flowchart of FIG.

  Since the processing from step ST21 to ST26 shown in FIG. 7 is the same as the processing from step ST1 to step ST6 of the first embodiment shown in FIG. 6, detailed description is omitted here.

  When the current of the motor 10 is detected by the current sensor 21 and the controller 16 determines that the load is overloaded, the motor 10 is rotated in the reverse direction. That is, the first reverse rotation is performed (Y in step ST23, step ST27).

  The operation is resumed, and if the controller 16 does not determine an overload, the operation is continued as it is (N in step ST23). If it is determined again that the motor is overloaded, the motor 10 is rotated in the reverse direction again. That is, the second reverse rotation is performed (Y in step ST23, step ST27). The operation is resumed, and if the controller 16 does not determine an overload, the operation is continued as it is (N in step ST23).

  If it is determined that the load is overloaded again, since the second reverse rotation has been reached, the buzzer 19 notifies the user and stops the motor 10 (Y in step ST28, step ST29, step ST30).

  After stopping the motor 10, the control unit 16 outputs a reset signal to the signal line 20 of the power switch 18 and turns off the power switch 18. Thereby, the supply of power to each part (the motor 10 and the control part 16) of the disposer is forcibly cut off (step ST31).

  The power is restored by manually turning on the power switch 18 that has been turned off (steps ST32 and ST33).

  The number of reverse rotations was optimally two times as a result of crushing evaluation obtained by the applicant of the present application, but can be arbitrarily changed depending on the output of the disposer, crushed material, and the like.

  By providing such a control mode, the power supply is not frequently shut off due to an overload. Therefore, the user does not have to manually turn on the power switch 18 every time an overload occurs. It can be.

[Example 3]
Next, a disposer according to the third embodiment will be described.

  FIG. 8 is a side view showing a schematic configuration of the disposer according to the third embodiment, and FIG. 9 is a circuit diagram thereof. 8 and 9, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The third embodiment is different from the first embodiment in that a relay (power cutoff means) 22 is provided instead of the power switch 18 and a battery 23 is provided in the control unit 16. The battery 23 is charged when the relay 22 is turned on. When the battery 22 is turned off, the battery 23 serves to supply power to a portion that detects the state of the lid switch 12 in the control unit 16 and the relay 22 when the power is restored. It plays the role of supplying electric power.

  Next, the operation of the disposer of the third embodiment will be described with reference to the flowchart of FIG.

  Since the processing from step ST41 to ST46 shown in FIG. 10 is the same as the processing from step ST1 to step ST6 of the first embodiment shown in FIG. 6, detailed description is omitted here.

  When the current of the motor 10 is detected by the current sensor 21 and the controller 16 determines that the motor is overloaded, the buzzer 19 notifies the user and stops the motor 10 (Y in step ST43, step ST47, step ST47). ST48).

  After the motor 10 is stopped, a reset signal is output from the control unit 16 to the relay 22 via the signal line 20. Thereby, the relay 22 is turned off, and the entire power supply to the disposer through the power cord 17 is cut off (step ST49).

  In this state, the lid switch 12 is removed from the insertion port 11 to remove crushed materials and foreign matters that have caused overload. (N in step ST50, step ST51).

  When the lid switch 12 is attached to the insertion port 11 again, the control unit 16 recognizes that the lid switch 12 has been attached, and turns on the relay 22 with the electric power stored in the battery 23.

  The battery 23 stores only the power necessary for supplying power as a power source for the detection part of the lid switch 12 of the control unit 16 and the relay 22 when the power is restored when the battery 23 is turned off in consideration of safety. Is desirable.

  As described above, since the power can be turned on by the lid switch 12 when the power is restored, the user does not need to perform any special work on the power source, and after the lid switch 12 is attached to the inlet 11. Since the relay 22 is turned on, the power can be safely restored.

  In the above embodiment, the water supply channel 4 supplies water to the main body 3 of the disposer from above the sink 1, but the present invention is not limited to this. For example, the water supply channel 4 is directly connected to the main body 3. It is good also as a structure which supplies water.

  Moreover, although the control part 16 is attached to the main body 3, you may make it attach independently in another place.

  Also, various load detecting means can be used instead of the current sensor 21 described above. For example, one that detects the temperature rise of the motor 10 using a thermistor, one that detects abnormal rotation of the motor 10 using a Hall IC, one that detects abnormal voltage using a partial pressure of resistance, and abnormal vibration using an acceleration sensor. Those to be detected can be used alone or in combination.

  As the power shut-off means, a power switch 18 or a relay 22 having a reset function may be provided in the plug of the power cord 17.

  Further, in each of the above embodiments, the buzzer 19 is used as a notification method to the user. For example, when a lamp such as an LED is installed at a position that is easy to see for the user outside the sink 1, for example, The lamp may be turned on or blinked. Further, notification may be performed using a liquid crystal display lamp instead of the lamp.

  As described above, the disposer of the present invention provides a disposer that can be easily maintained by the user without malfunctioning by shutting off all power supply when the motor is overloaded due to excessive input of garbage, etc. Can do.

It is a schematic side view which shows the whole structure of the disposer of Example 1 of this invention. It is explanatory drawing which shows the OFF state of the cover switch in the disposer of Example 1. FIG. It is explanatory drawing which shows the ON state of the cover switch in the disposer of Example 1. FIG. FIG. 3 is a block diagram illustrating an outline of a circuit configuration in the disposer according to the first embodiment. FIG. 3 is a schematic diagram of a power switch circuit in the disposer according to the first embodiment. 3 is an operation flowchart of the disposer according to the first embodiment. It is an operation | movement flowchart in the disposer of Example 2 of this invention. It is a schematic side view which shows the whole structure of the disposer of Example 3 of this invention. FIG. 10 is a block diagram illustrating an outline of a circuit configuration in a disposer according to a third embodiment. 10 is an operation flowchart of the disposer according to the third embodiment.

Explanation of symbols

3 Disposer body 8 Crushing blade (crushing part)
9 Crushing chamber (Crushing section)
10 Motor (motor part)
12 Lid switch 16 Control unit 17 Power cord (Power supply unit)
18 Power switch (Power shut-off means)
19 Buzzer 21 Current sensor (load detection means)
22 Relay (Power cutoff means)
23 battery

Claims (5)

A crushing unit for crushing the input garbage, a motor unit for driving the crushing unit, a control unit for controlling the output of the motor unit, a power supply unit for supplying power to the motor unit and the control unit, A load detecting means for detecting a load of the motor section; a power shut-off means for shutting off power supplied from the power supply section to the motor section and the control section; a battery for returning the power shut-off means; and the crushing section With a lid switch that uses a lid that is detachably attached to the inlet for throwing in garbage, and a power return switch ,
When the load of the motor unit detected by the load detection unit is equal to or greater than a predetermined value, the control unit operates the power cutoff unit to supply power supplied from the power supply unit to the motor unit and the control unit. Disposer characterized by having a control mode that shuts off before this. The disposer according to claim 1, wherein
The control unit detects the load again after reversing the motor unit at least once when the load of the motor unit detected by the load detection unit is a predetermined value or more, and the detected load is a predetermined value or more. In this case, the disposer has a control mode in which the power shut-off means is operated to shut off the power supplied from the power supply unit before the motor unit and the control unit. The disposer according to claim 1 or 2,
A disposer characterized in that when the load of the motor unit detected by the load detection means is greater than or equal to a predetermined value, a notification is given to the user before the motor unit is stopped . The disposer according to any one of claims 1 to 3 ,
The lid switch is a position where the power is turned off when the knob provided on the lid is turned so that the lid can be attached to and detached from the inlet, and the lid cannot be removed from the inlet. Disposer characterized by being turned on when A sink comprising the disposer according to any one of claims 1 to 4 .

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