JP2008080235A - Apparatus for operating disposer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disposer capable of certainly unlocking the locked state when a rotary plate is locked. <P>SOLUTION: In the disposer provided with the rotary plate 6 at the bottom part of a crushing chamber 5 connected to a charging opening 4 and rotated by a motor 10, provided with fixed blades 8 enclosing the rotary plate 6 on the inner wall of the crushing chamber for crushing garbage and allowing the crushed garbage to drop from the circumstance of the rotary plate 6 to a discharging chamber 9 to discharge to the outside, an overload detecting means 13 detecting the locking state of the rotary plate 6 is installed. The crushing operation is performed at an output T<SB>2</SB>lower than the rated power of the motor 10 using a DC brushless motor normally, and the motor is rotated in a reverse direction at a higher output T<SB>3</SB>than the output T<SB>2</SB>when the locked state is detected. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to an operating device for a disposer that crushes cocoons generated in a kitchen or the like with a rotary blade.

The disposer is connected to a drain outlet of a sink in a kitchen or the like, and receives the dredging introduced from the drain outlet by a rotating plate provided at the bottom of the crushing chamber, and the rotating plate is rotated by a motor and attached to the upper surface. While crushing with a blade, it grind | pulverizes by carrying out fine shear processing between the fixed blade provided in the bottom inner wall of the crushing chamber surrounding the rotation plate, and the rotation plate outer periphery.

However, if foreign material such as a metal spoon or hard material such as hard bones or long fibers is mixed in the thrown bowl, the rotary plate is locked between the rotary plate and the fixed blade and the motor is locked. May overload, and in the worst case, the motor may burn out. For this reason, when the locked state of the rotating plate is detected, the rotating plate is rotated in the reverse direction to release the lock. (For example, see Patent Document 1 and Patent Document 2)

In addition, when an overload of the motor is detected and the rotating plate is rotated in the reverse direction, the disposer (Patent Document 3) that increases the amount of water supply to make it easier to remove the residue remaining on the grinding blade or When the load is detected, reverse the motor once and then increase the motor output stepwise to make it rotate in the forward direction so that the torque corresponds to the amount of pulverization, and if clogging occurs, the clogging will be resolved. Disposers have been proposed. (See Patent Document 4)

JP 55-137050 A JP 2002-263607 A JP-A-11-28382 JP 2004-321840 (paragraph number 0029)

In this way, when the rotating plate of the disposer is locked (biting), the overload current of the motor is detected and the rotating plate is rotated in reverse, but bone fragments, fibers, stones, etc. If the rod is compressed and strongly locked between the rotating plate and the fixed blade, the rotating plate can be easily reversed by simply reversing the motor or adding water. It is not possible to insert the lock handle from the insertion slot, or insert the tool into the motor shaft from the bottom to force it to rotate, reverse it, and disassemble the disposer to remove the trapped traps. did not become.

The present invention is provided with an overload detection means for detecting the locked state of the rotating plate, and when the locked state is detected, the motor output is increased and the rotating plate is reversely rotated with a torque stronger than the biting force. To unlock.
For this reason, a DC brushless motor whose output can be adjusted is used as the motor, and the normal crushing operation is normally rotated at an output of 80%, for example, and when a locked state is detected, the output is increased to 100% and reversely rotated.

In this way, when the locked state occurs, the present invention increases the motor output from the crushing operation and rotates the rotating plate in the reverse direction, thereby securely locking without any other tools or disassembly. Can be released, and the motor can be stopped and the locked soot can be easily removed with a hand inserted into the crushing chamber.
Further, by using a DC brushless motor as the motor, it is possible to easily adjust the output for unlocking, and it is possible to obtain an effect that can be reliably released simply by reversing the rotating plate by itself.

Hereinafter, the drawings will be described.
FIG. 1 is a side sectional view of a disposer showing an embodiment of the present invention, FIG. 2 is a torque characteristic curve diagram, 1 is a disposer, 2 is a sink, 3 is a drain outlet of the sink, 4 is an inlet of the disposer 1, and 5 is The crushing chamber following the charging port, 6 is a rotating plate provided at the bottom of the crushing chamber 5, 7 is a striking blade attached to the upper surface of the rotating plate 6, and 8 is fixed to the bottom of the crushing chamber surrounding the rotating plate 6. A fixed blade, 9 is a discharge chamber provided below the rotating plate 6, and 10 is a motor that drives the rotating plate 6 and uses a DC brushless motor. 11 is an operation switch, 12 is a control device, and 13 is an overload detection means.

When processing the soot (in the case of batch processing), the soot is put on the rotating plate 6 of the crushing chamber 5 from the drain port 3 through the input port 4, and the operation switch 11 is closed while supplying water.
Start initially repeated low output (torque) briefly by T ₁ for example 2 seconds forward (or in reverse) several times (3 times in the figure), to detect whether such metallic foreign matters is not contaminated. If it is mixed, the foreign matter is spattered by the centrifugal force of the rotating plate 6 and hits the inner wall of the crushing chamber 5 to generate an impact sound. Therefore, the operation is stopped and the foreign matter is removed and then restarted.
If the foreign matter is detected, it performs the crushing operation by forward rotating the rotary plate 6 by the torque T _2. During the crushing operation, when a hard bone fragment or the like is caught in the gap G between the rotating plate 6 and the fixed blade 8, the rotating plate 6 is locked and an overload current flows, the overload detecting means 13 detects the locked state. A lock state occurrence signal (not shown) is output, and the motor 10 is reversely rotated with a torque T ₃ (T ₃ > T ₂ ). For this reason, the rotating plate 6 rotates with a strong force in the opposite direction to the time of biting, and the bited pieces and the like are returned from the gap G onto the rotating plate 6 and the motor 10 is stopped when the load current becomes small.
When the locked state is released and the motor 10 stops, the cause of the lock is investigated and removed, and the crushing operation is restarted.

It should be noted that a DC brushless motor whose output can be easily adjusted is used for the motor 10 and the output required for the crushing operation can be selected according to the rated output. It is preferable that the crushing operation is performed with an output of about 80% and the reverse rotation is performed with an output of 100% when a locked state is detected. The control device 12 and the overload detection device 13 can be provided in the casing together with the motor 10.

It is side sectional drawing which shows the example of the disposer which implements this invention. It is a characteristic curve figure which shows the example of a torque characteristic.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Disposer 2 Sink 3 Drainage port 4 Input port 5 Crushing chamber 6 Rotating plate 7 Impact blade 8 Fixed blade 9 Discharge chamber 10 Motor 11 Operation switch 12 Controller 13 Overload detection device

Claims (2)

A rotating plate that is rotated by a motor is installed at the bottom of the crushing chamber following the inlet. The crushing chamber is provided with a fixed blade that surrounds the rotating plate on the crushing chamber wall, and the crushed soot falls from the periphery of the rotating plate to the discharge chamber. In the disposer to be discharged, an overload detecting means for detecting the locked state of the rotating plate is provided, and when crushing, the rotating plate is rotated forward at an output lower than the rated output of the motor, and when the locked state is detected, A disposer operating device that increases output and rotates a rotating plate in a reverse direction. The apparatus for operating a disposer according to claim 1, wherein a DC brushless motor is used as the motor and is rotated forward at an output of 80% during crushing and reversely rotated at an output of 100% when a locked state is detected.

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