JP2006334564A - Disposer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disposer with improved crushing property for matter difficult to crush, causing little stay of crushed garbage in a drain pipe even with a relatively small amount of supply water. <P>SOLUTION: A crushing mechanism 4 of this disposer D is driven by a drive motor 3 to crush garbage, discharges the crushed garbage together with supplied water, and comprises a fixing ring 40 having fixed teeth 41 formed within the ring and a rotary disk-like turntable 44 located inside the fixing ring, rotated with the drive motor, having rotary blades 46 formed. The fixed teeth have teeth depth set to 0.8-1.6 mm. The rotary blade is formed by cutting and raising part of the outer periphery of the turntable 44. The turntable 44 preferably has cutout parts 45a at its outer periphery. A reinforcing plate 47 covering recessed parts 48 formed by raising the rotary blades is fixed to the turntable to prevent fall of garbage. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a disposer that is attached to a sink of a sink and crushes garbage, and in particular, can prevent clogged garbage from staying in the drainage pipeline and prevent clogging of the drainage pipeline, The present invention relates to a disposer that can improve crushing and transportability of difficult-to-crush materials.

  Conventionally, as a method of operating this type of disposer, after throwing garbage into the disposer crushing chamber, supplying the wash water at a constant flow rate, the disposer hammer continues to rotate at a low speed, and when crushing is completed, the hammer rotates. There is a method of operating a disposer that stops the supply of water and then stops the supply of cleaning water. Then, the rotation of the disposer hammer is started at a low speed after the cleaning water supply is started, and is rotated at a high speed as the amount of garbage remaining in the grinding chamber decreases. (For example, refer to Patent Document 1).

  As another example of a disposer operating device, a short low-speed operation is repeated several times at the start of the motor, and if no overload current is generated by this low-speed operation, an operation with a predetermined control characteristic is performed. There is a disposer operating device. This technology, for example, operates for 2 seconds, stops once, and repeats power supply for 2 seconds. Even when abnormal sounds such as foreign sounds or vibrations occur due to foreign matter, the operation switch can be opened without fail. (See, for example, Patent Document 2).

JP 2002-204972 A JP 2003-320267 A

  By the way, the operating method of the disposer described in Patent Document 1 is that during the crushing of the garbage, the amount of washing water relative to the weight of the garbage is larger than that of the conventional disposer, and the crushed garbage is in the drain pipe. Although it has the effect of making it difficult to stay, when a large amount of garbage is thrown in and crushed at once, the crushed garbage may be discharged at once and may stay in the drainage pipe. .

  In addition, the disposer operating device described in Patent Document 2 generates an abnormal sound by splashing foreign matter such as a spoon. In the case of an abnormality such as biting by detecting an overload current during low speed operation, The high-speed operation is not performed, and the retention of crushed material in the drain pipe is not considered. Furthermore, the disposer described in Patent Document 2 is provided with a rotating blade plate at the bottom of the crushing chamber, and has one or several fixed or swinging striking blades on the upper surface of the rotating blade plate, and rotates on the outer peripheral surface. The blade is formed, the structure of the rotary blade is complicated, and it is not suitable for crushing difficult-to-crush materials.

  The present invention has been made in view of such problems, and the object of the present invention is to prevent crushed garbage from staying in the drain pipe even with a relatively small amount of water supply. It is providing the disposer which improved the crushability of a difficult-to-crush thing. Another object of the present invention is to provide a disposer that can be downsized, can be operated with low noise, and can be stably operated. Furthermore, it is providing the disposer which can simplify the structure of a rotary blade and can reduce the cost of a crushing mechanism.

  In order to achieve the above object, a disposer according to the present invention is a disposer that crushes garbage by a crushing mechanism driven by a drive motor and discharges the garbage together with the supplied water. The crushing mechanism has fixed teeth inside. The fixed ring is formed and a disk-shaped rotary table that is positioned inside the fixed ring and is rotated by the drive motor to form a rotary blade. It is characterized by being set to 8-1.6 mm. The rotary blade may be formed integrally with the table or may be formed by fixing another member.

  In the disposer of the present invention configured as described above, a rotary blade is formed on the disc-shaped rotary table that constitutes the crushing mechanism, and the rotary blade and a fixed ring that is located on the outer periphery and has fixed teeth formed inside. Since garbage can be crushed and the tooth depth of the fixed teeth is set to 0.8 to 1.6 mm, difficult-to-crush materials can be crushed reliably. That is, since it is set to a depth smaller than the tooth depth of the conventional crushing mechanism, it is possible to reliably crush fibrous difficult-to-crush products such as pod pods and prevent clogging of the drainage pipe. .

  Another aspect of the disposer according to the present invention is a disposer that crushes food waste by a crushing mechanism driven by a drive motor and discharges the garbage together with the supplied water. The crushing mechanism has fixed teeth formed inside. It is composed of a fixed ring and a disk-shaped rotary table that is positioned inside the fixed ring and is rotated by the drive motor to form a rotary blade. The rotary blade has a part of the outer periphery of the disk-shaped rotary table. It is characterized by being cut and raised.

  The disposer configured as described above can cut and raise a part of the outer periphery of the disc-shaped rotary table to continuously form the rotary blade, so that the rotary blade is configured to swing the hammer on the rotating table. Compared to the above, the manufacturing can be facilitated and the cost can be reduced. In addition, noise during crushing can be greatly reduced as compared with a configuration in which the hammer swings.

  The disk-shaped rotary table preferably has a notch on the outer periphery thereof. As the cutout portion, a concave portion recessed from the outer periphery or a slit-like cutout is suitable. According to this configuration, when a small piece such as a bird bone is clogged in the gap between the fixed teeth formed inside the fixing ring and the rotary table is locked, the small piece is cut and crushed at the notch. A locked state can be prevented and the stop by the disposer's crushed material being pinched can be avoided.

  It is preferable that the disk-shaped rotary table has a fixed reinforcing plate that covers a cutout portion formed by cutting and raising the rotary blade. In other words, a part of the table is cut and raised to form a rotary blade, so that a notch is generated in the table and the garbage is prevented from falling through this notch. Thus, the garbage can be prevented from falling while serving as reinforcement of the disk-shaped rotary table formed from the plate material by applying the reinforcing plate.

  The rotary blade preferably has a shape that is high on the outer peripheral side and low on the inner peripheral side. According to this structure, garbage can be sent to an outer peripheral side with the low low tooth part of an inner peripheral side, and garbage can be easily crushed with the high high tooth part of an outer peripheral side, and the fixed tooth of a fixing ring. And it is possible to reliably crush even hard-to-crush products such as green soybean pods with fixed teeth set to a predetermined tooth depth, and discharge with water absorbed to prevent clogging of drainage pipes be able to.

  The drive motor is preferably a direct current motor, and a brushless direct current motor is particularly suitable. If the motor that drives the disposer crushing mechanism is a DC motor, the rotation speed can be easily changed, and low-speed rotation, high-speed rotation, stopping during rotation, and reversing operation can be performed freely. Therefore, the disposer can be miniaturized.

  According to the present invention, since the tooth depth of the fixed teeth formed inside the fixed ring constituting the garbage crushing mechanism is set to 0.8 to 1.6 mm, the crushing of difficult-to-crush materials is ensured. It can be done. In addition, the disk-shaped rotary table that constitutes the garbage crushing mechanism has a rotating blade formed by cutting and raising a part of its outer periphery, so that the crushing mechanism can be simplified and the crushing mechanism can be manufactured. Becomes easier and the cost can be reduced. And since the drive motor is controlled so that the state of the input garbage is first flattened, and then the garbage is crushed little by little, a large amount of crushed material is discharged from the crushing chamber at once. In addition, the garbage is prevented from staying because it gradually flows in the drain pipe along with the supplied water. Thereby, the operating state of the disposer can be stabilized. In addition, it is possible to reduce the size of the disposer, reduce noise and vibration during operation, and enable comfortable use.

  Hereinafter, an embodiment of a disposer according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic configuration diagram showing an attachment state of the disposer according to the present embodiment, FIG. 2 is a cross-sectional view showing a main configuration of the disposer of FIG. 1, and FIG. 3 is a plan view of main portions of the disposer of FIG. 4 is a perspective view and a cross-sectional view of the main part showing the rotating part of the crushing mechanism.

  1 to 4, the disposer D includes a fixing member 1 fixed to the sink S of the sink, a bottomed cylindrical disposer body 2 that is connected to the lower side of the fixing member 1 and expands downward, and the disposer body 2 includes A driving motor 3 as a driving source fixed to the lower end, and includes a crushing mechanism 4 that receives a driving force of the driving motor 3 and performs a garbage crushing operation at a lower portion of the disposer body 2. The food waste introduced by removing the eye plate 5 attached to the mouth is crushed and discharged from a drain pipe 6 connected to the disposer body 2 while supplying water from above.

  Here, the disposer D will be described in detail with reference to FIGS. The fixing member 1 on the sink S side includes a drain port member 10, a support plate 11 and a ring-shaped fixing screw 12. The waterproof seal 13 is sandwiched between the drain port of the sink S and the support plate 11 is sandwiched below the water seal. Mounted in a state. The lower end of the drain port member 10 is a pipe-shaped portion 10a for guiding water and garbage, and the upper end opening is a garbage input port 10b. A synthetic resin eye plate 5 and a water stop lid 5A can be attached to the garbage input port 10b. FIG. 2 shows a state where both the eye plate 5 and the water stop lid 5A are attached to the garbage input port 10b, and FIG. 3 shows a state where the water stop lid 5A is removed. The eye plate 5 is formed with a plurality of openings 5 a for allowing the water in the sink S to flow into the main body casing 21.

  The disposer body 2 is connected to the fixing member 1 via a vibration isolating rubber 20 and includes a main body casing 21 in which the crushing mechanism 4 is accommodated. A crushing chamber 24 is formed in the internal space of the main casing 21, and a discharge chamber 25 is formed below the crushing mechanism 4 in the crushing chamber 24. The bottom of the discharge chamber 25 is inclined so that the crushed garbage can easily flow into the drain pipe 6.

  The anti-vibration rubber 22 has a substantially cylindrical shape, and the upper and lower cylindrical attachment portions 22a are fitted around the outer circumferences of the main casing 21 and the pipe-like portion 10a at the lower end of the drain port member 10, so that the fixing member 1 On the other hand, the main body casing 21 is connected in a watertight state so that the relative movement of the main body casing 21 is possible, and the intermediate portion is a thin-walled portion 22b that can be easily deformed. The upper and lower mounting portions 22a of the anti-vibration rubber 22 are formed thick and are fixed so as not to leak water by fastening bands 22c such as metal bands. The main body casing 21 and the fixing member 1 are connected by the anti-vibration rubber 22 to suppress the vibration generated in the main body casing 21 and the vibration of the drive motor 3 from being transmitted to the fixing member 1 and the sink S. It is like that.

  The anti-scattering rubber 15 is fitted to the inner periphery of the vibration-proof rubber 22. This anti-scattering rubber has a ring-shaped upper base portion 15a, a cylindrical portion 15b extending downward from the upper base portion, and a lid portion 15c extending curved inward from the upper base portion. A through-hole is formed at the center of the cover, and a large number of notches are formed radially on the lid. Therefore, the upper opening of the crushing chamber 24 is normally covered except for the central through-hole, and the lid portion 15c is bent downward and bent downward when throwing in the garbage. It is possible to close it after it is turned on. The cylindrical portion 15b prevents the crushed garbage from adhering to the thin-walled portion 22b.

  The drive motor 3 is fixed to the lower part of the main body casing 21 and includes a drive shaft 31 extending vertically upward. The drive shaft 31 extends through the lower end of the main body casing 21 into the crushing chamber 24. The crushing mechanism 4 to be driven is connected by a cap nut 32. The drive shaft 31 is in a watertight state by a seal 33 such as an O-ring, and prevents water supplied to the crushing chamber 24 from leaking in the direction of the drive motor 3. The drive motor 3 is a DC brushless motor, and this motor can change the rotational speed by changing the current value, changing the frequency, or changing the duty of the PWM signal, for example. The size is reduced as compared with a conventional AC motor. Further, since the torque is high, a sufficient driving force can be output even during low-speed rotation, and fine speed control is possible. The drive motor 3 includes a Hall IC for position detection described later.

  The crushing mechanism 4 includes a fixed ring 40 having fixed teeth formed on the inside thereof, and a disk-shaped rotary table 44 positioned in the fixed ring and driven by the drive motor 3, and the rotary table is a disk-shaped turn. A table 45 and a rotary blade 46 are provided, and the center of the turntable 45 is fixed to the upper end of the drive shaft 31 of the drive motor 3. The turntable 45 is formed with two rotary blades 46, 46 that are raised upward by forming a notch from the outer periphery, close to the fixing ring 40. The rotary blade 46 has a high tooth part 46a on the outer peripheral side and a low tooth part 46b on the inner peripheral side. A reinforcing plate 47 is fixed below the turntable 45. The turntable 45 and the reinforcing plate 47 are formed of a metal plate such as a stainless steel plate having a thickness of about several millimeters, and the rigidity of the turntable is increased by fixing the reinforcing plate 47 with a predetermined width in the diameter direction of the turntable by welding or the like. In addition, the rotational state is stabilized. It is preferable to spot weld a plurality of locations.

  A large number of small-diameter holes are formed in the turntable 45 so that tap water supplied from above can flow downward. When the disposer D is not operated, the tap water is drained from the hole or between the turntable 45 and the fixing ring 40 to the discharge chamber 25. Both ends of the reinforcing plate 47 are formed in a circular arc in conformity with the outer periphery of the turntable 45, and are fixed to a position covering the concave portion 48 for forming the rotary blade 46. Therefore, it is possible to prevent garbage from falling from the recess 48.

  The turntable 45 has two notches 45a and 45a formed on the outer periphery thereof. These notches have a depth of about 2 mm from the outer periphery and a width of about 6 mm, and are formed in a positional relationship orthogonal to the positions of the rotary blades 46 and 46. The notches 45a, 45a are formed for the purpose of cutting (cutting) small pieces when small pieces such as bird bones are clogged in the gap between the fixed teeth 41, 41. By forming the notches 45a and 45a, it is possible to prevent the disk-shaped rotary table from being locked by the crushed pieces. The number of notches is not limited to two, and may be one or many.

  A central hole for connection with the drive motor 3 is formed at the center of the turntable 45, and protrusions 49, 49 for stirring dust are formed at positions about 1/3 of the radius from the central hole. The protrusions and the rotary blades 46 are arranged in a straight line in the diameter direction to which the reinforcing plate 47 is fixed. Note that the number of the stirring protrusions 49 is not limited to two, and the notch that forms the protrusion is covered with the reinforcing plate 47, so that the garbage does not fall.

  On the other hand, the fixing ring 40 is fixed to the inner surface of the main body casing 21 at a position facing the turntable 45 of the disk-shaped rotary table 44, and a plurality of fixing teeth 41, 41. . The vertical width of the fixed tooth 41 is set larger than the height of the rotary blade 46 of the turntable 45. The tooth depth of the fixed teeth 41 is set to about 1.5 mm, and the widths of the protrusions and the recesses of the fixed teeth 41 are each set to about 4 mm. The tooth depth is preferably about 0.8 mm to 1.6 mm, and by setting the tooth depth within this range, it is possible to improve the crushing / conveying performance of garbage such as strong green soybean peel. That is, by reducing the tooth depth of the fixed tooth, the amount of the object to be crushed into the concave portion of the fixed tooth is limited to improve the crushing / conveying property.

  The disc-shaped rotary table 44 is fixed to the tip of the drive shaft 31 of the drive motor 3 so as to be positioned horizontally below the main body casing 21, and the upper side of the crushing mechanism 4 in the inner space of the main body casing 21 is the above-mentioned crushing. While being configured as a chamber 24, the lower side of the crushing mechanism 4 is configured as a discharge chamber 25 for discharging crushed garbage. The disc-shaped rotary table 44 constituting the crushing mechanism 4 is formed integrally with a rotary blade 46 that forms a turntable 45 made of a metal plate by pressing or the like and presses garbage on the fixed teeth 41, 41. Since the reinforcing plate 47 can be fixed and formed, it can be easily manufactured as compared with a conventional rotary blade that swingably supports a movable hammer, and the cost can be reduced. In addition, since there are no moving parts on the turntable, it is possible to reduce noise and to have excellent durability.

  Due to the rotation of the disc-shaped rotary table 44 accompanying the drive of the drive motor 3, the garbage is crushed between the rotary blade 46 and the fixed teeth 41, 41... Of the fixing ring 40 in the crushing chamber 24. Is configured to be dropped into the discharge chamber 25 through a gap between the fixing ring 40 and the turntable 45. This gap is normally set to about 1 mm or less than 1 mm, and determines the size when the crushed garbage is discharged. Further, the drain pipe 6 is connected to the lower end of the side surface of the main body casing 21, and the garbage fragments that have fallen into the discharge chamber 25 are sequentially discharged from the drain pipe 6 together with the supplied water. Has been.

  On the outer periphery of the pipe-like portion 10a of the drain port member 10, Hall sensors 35 and 35 constituting a eye plate detection device (not shown) are mounted. Further, the eye plate 5 includes magnets 5b and 5b at positions that can face the Hall sensor. As shown in FIG. 3, the eye plate 5 is configured to be able to rotate 90 degrees in a state of being fitted to the garbage input port, to be fitted at the OFF position, and to be locked at the ON position. The hall sensor and the magnet face each other.

  The eye plate detector is configured such that the hall sensors 35 and 35 detect that the eye plate 5 formed of a plastic material and having a rotation lock mechanism is fitted and locked to the food waste input port 10b. After the hall sensors 35 and 35 detect that the eye plate 5 is locked, the drive motor 3 is rotationally driven to crush the garbage. When the eye plate 5 is not attached, the drive motor 3 is operated. It is made not to rotate. With this configuration, it is possible to prevent a hand from being accidentally inserted into the garbage input port 10b and to prevent the garbage from being ejected during crushing. Although two hall sensors and two magnets are provided, an appropriate number can be used. The hall sensors 35 and 35 and the magnets 5b and 5b constitute an eye plate switch.

  The disposer D of the present embodiment configured as described above is attached to the sink S of the sink as shown in FIG. In FIG. 1, a mixing faucet 50 is attached to the sink S of the sink, a hot water pipe 61 from the water heater is connected to the hot water passage 51, and a water supply pipe 62 from the water supply is connected to the water supply passage 52. . The hot water passage 51 and the water supply passage 52 are connected to a mixing valve 53, and a mixing water passage 54 is provided from the mixing valve 53 to the faucet, and is open from the faucet. A handle 55 is attached to the upper part of the mixing faucet 50, and the mixing valve 53 can be operated to mix hot water and clean water and supply water from the faucet. An electromagnetic valve 70 is provided in the middle of the bypass pipeline 63 branched from the water supply pipeline 62, and the bypass pipeline 63 communicates with the mixed water passage 54 via the bypass passage 56. Therefore, even when the mixing valve 53 is closed, water can be supplied from the faucet by opening the electromagnetic valve 70.

  The disposer D and the electromagnetic valve 70 are controlled by the control device 80. An AC commercial power supply 81 is supplied to the control device 80, and the drive motor 3 of the disposer D, the hall sensor 35 of the eye plate detection device, and the electromagnetic valve 70 are connected to the control device 80. Driving / stopping and opening / closing operation of the electromagnetic valve 70 are performed. In addition, the control device 80 rotates the drive motor 3 at a low speed or a high speed, and controls to change the rotation speed at short time intervals when the drive motor is started. The control for changing the rotational speed includes, for example, control for stopping after low-speed rotation, control for reversing after low-speed rotation, and the like.

  Here, the controller 80 of the disposer D will be described in detail with reference to FIG. FIG. 5 is a circuit diagram showing the control device 80 of the disposer D of this embodiment. The control device 80 includes a rectifier circuit 90, a power supply circuit 100, a microcomputer 110, a driver circuit 120, a drive unit 130 of the drive motor 3, and A detection unit 140 for ending crushing of garbage is provided. The drive motor 3 is a direct current brushless (DCBL) motor, and includes a stator (not shown) having three-phase stator coils (windings) u, v, and w, and a rotor (not shown) having permanent magnets. A signal output from a Hall IC for position detection (not shown) is supplied to the driver circuit 120 through a signal line 3a.

  The rectifier circuit 90 is a circuit that rectifies the AC commercial power supply 81 into a direct current, and includes a rectifier element 91, a choke coil 92, and an electrolytic capacitor 93. The rectified power supply is supplied to the power supply circuit 100 and the drive unit 130 of the drive motor. To supply. Note that the rectifier circuit 90 has a simplified configuration, and it is needless to say that an appropriate rectifier circuit can be used in accordance with the disposer specifications.

  The power supply circuit 100 supplies DC power transformed to a necessary voltage to the microcomputer 110 and the driver circuit 120, and basically includes DC / DC converters 101 and 102 and a three-terminal regulator 103. . The DC / DC converter 101 supplies a power supply voltage of, for example, 5V to the microcomputer 110, and the DC / DC converter 102 supplies a power supply voltage of, for example, 15V to the driver circuit 120.

  The microcomputer 110 includes a CPU, ROM, RAM, and a storage unit including an electrically erasable programmable ROM (EEPROM) that is an electrically rewritable nonvolatile memory, and a start switch from the SW terminal 112 and the SW terminal 113 of the connector 111. And a signal from the eye plate detection switch are input. Further, the temperature information of the drive motor 3 is input to the microcomputer 110 as TENP-M, and the temperature information of the transistor of the drive unit 130 is input as TENP-P.

  Further, in the microcomputer 110, the drive current of the drive motor 3 is detected by the detection unit 140 and input via the operational amplifier 141, and this drive current is also input to the driver circuit 120. This drive current is input to detect the end of garbage crushing. Further, the detection unit 140 can detect the biting by detecting that the driving current value increases when the crushing mechanism 4 bites the garbage and stops. In addition, it can be easily detected from the number of rotations of the drive motor 3 that the crushing mechanism 4 is stopped by biting the garbage.

  The microcomputer 110 is a control unit that controls the entire apparatus including the operation control of the disposer D. Specifically, the normal operation process for controlling the operation of the disposer, the eye plate emergency executed when the eye plate is removed Stop processing and biting release processing executed when the crushing mechanism bites are performed. According to the control program on the ROM, the operation control of the drive motor 3 of the disposer D, which will be described later, is executed using a memory storing data used for calculation, and the crushing processing of garbage is executed.

  A control signal from the microcomputer 110 is input to the driver circuit 120. For example, a PWM signal is used as the control signal. The driver circuit 120 receives a control signal from the microcomputer 110 and supplies a drive signal such as a rectangular wave to the drive unit 130 of the drive motor 3. The drive unit 130 of the drive motor 3 includes the field effect transistors (FETs) 131 and 132 paired as described above, and receives the drive signal from the driver circuit 120 to drive the drive motor 3 with a direct current. To do. H-SIGNAL output from the drive motor 3 is a position detection signal from the Hall IC, and a rectangular wave of 120 degrees, for example, is supplied to the driver circuit 120. That is, the driver circuit 120 is instructed by an operation command from the microcomputer 110, outputs a drive signal to the gates of the FETs 131 and 132 of the drive unit 130, monitors the rotation speed with the Hall IC signal, and repeats this operation. The drive motor 3 is operated.

  The FETs 131 and 132 are shown for only one phase, but actually three phases are required, and three drive signals U, V, and W are supplied to the drive motor 3 from each of the three phases. It has become. That is, one control signal UVW-H output from the driver circuit 120 is supplied to the gate of one FET 131, the other control signal UVW-L is supplied to the gate of the other FET 132, and the drain of one FET 131 is the other. Connected to the source of the FET 132. The U, V, and W outputs of the drive unit 130 are supplied to the drive motor 3.

  The drain of the other FET 132 is connected to one end of a resistor 142 constituting the detection unit 140, and the other end of the resistor 142 is grounded. Thus, the current flowing through the resistor 142 is detected by the voltage generated at the upper end of the resistor 142, and this detection signal is input to the driver circuit 120 and also input to the microcomputer 110 via the operational amplifier 141. By detecting the current change of the drive motor 3, the end of crushing of garbage is detected. That is, when the load on the drive motor 3 is reduced, it is detected that the current becomes smaller than a predetermined value, and the end of crushing of the garbage put into the crushing chamber 24 is detected.

  The microcomputer 110 receives the temperature information TENP-P of the transistor of the drive unit 130 and the temperature information TENP-M of the drive motor 3, and is connected to an LED 150 that indicates an operation state and the like. The microcomputer 110 notifies the energized state, the operating state, the locked state, etc. by turning on the LED 150, and when the temperature information of the drive motor 3 exceeds a predetermined temperature based on the temperature information TENP-M, or when the temperature information TENP- Based on P, when the temperature information of the transistor of the drive unit 130 exceeds the temperature, the LED 150 is turned on.

  The locked state is turned on when, for example, garbage is caught between the disc-shaped rotary table 44 of the crushing mechanism 4 and the fixing ring 40, and is turned on for the purpose of overcurrent protection to the drive motor. Function. A reset signal 151 input to the microcomputer 110 resets the disposer D and is used, for example, when the crushing operation is performed again. Further, the buzzer 152 output from the microcomputer 110 is set so as to sound when crushing is completed, for example.

  With respect to the garbage crushing operation of the disposer D of the present embodiment configured as described above and the operation control method of the drive motor of the disposer D, the block diagram of FIG. 5, the flowcharts of FIG. 6 and 7, and the operation pattern diagram of FIG. The description will be given with reference. 6 is a flowchart showing the normal operation process of the disposer D, FIG. 7 is a flowchart showing the interrupt process, and S in the figure indicates each step of the flow. This flow is executed by the microcomputer 110 and is driven by each drive unit that has received a control signal from the microcomputer 110. In the present embodiment, the disposer D includes a control unit that changes the rotational speed of the drive motor 3 at the time of activation. In the present embodiment, although not shown in FIG. 6, the control of the drive motor 3 is started in response to the introduction of the garbage from the garbage input port 10 b of the fixing member 1 and the mounting of the eye plate 5. .

  First, the normal operation process of FIG. 6 will be described. When garbage is introduced from the garbage inlet 10b fixed to the sink of the sink and the start switch (not shown) is closed, the electromagnetic valve 70 is opened and water is supplied from the faucet (step S1). While water is supplied for a predetermined time, water is supplied in the motor wait state (step S2), and the disposer D is activated. Next, in step S3, the drive motor 3 starts low-speed rotation of, for example, 1000 rpm by a signal from the control device 80, and after low-speed rotation is performed for 1 second, the drive motor is stopped in step S4.

  Next, in step S5, it is determined whether or not the drive motor rotation and drive motor stop are repeated a predetermined number of times (here, 4 times). If the drive motor rotation and stop are repeated a predetermined number of times, the process proceeds to step S6. If not repeated, the process returns to step S3 and the process is repeated until a predetermined number of times is reached. Thus, the operation | movement which makes a low speed rotation and stops is repeated 4 times, for example (FIG. 8, S3-S5). By repeating the operation of rotating and stopping the drive motor 3 in this manner, the garbage is crushed by being pinched by the rotating blade 46 of the turntable 45 and the fixed teeth 41 of the fixing ring 40, and leveled. To be placed flat on the turntable. In this example, the example of rotation and stop of the drive motor has been shown. However, after the stop or in place of the stop, reverse rotation may be used, and high-speed rotation and low-speed rotation may be repeated.

  In step S6, the drive motor is continuously rotated at a low speed of about 1000 rpm for 5 seconds. After this low-speed rotation, in step S7, for example, acceleration is performed to 1000 to 2500 rpm in about 15 seconds, and then in step S8, high-speed rotation is performed at a rotational speed of, for example, about 2500 rpm. This high speed rotation is performed until crushing is completed. The garbage is crushed by being sandwiched between the fixed teeth 41, 41... Of the fixed ring 40 and the rotary blade 46 of the disk-shaped rotary table 44, and the hammer does not oscillate as in the conventional case. Crushing takes place at The detection when the crushing is completed is performed by detecting the collector currents of the FETs 131 and 132 that operate the drive motor 3. When the crushing is completed, the load is reduced, so that the current value flowing through the resistor 142 is decreased.

  Next, in step S9, it is determined whether the operation time is within 120 seconds. If it is within 120 seconds in step S9, end detection is started. When the detection state continues for 2 seconds continuously, the end buffer process is performed in step S10, the end detection process is completed in step S11, and the high-speed rotation of the drive motor 3 is ended. By this processing flow, the processing from step S1 to S8 is controlled so that the operation time does not exceed 120 seconds at the maximum. When the operation time exceeds 120 seconds in step S9, the drive motor 3 is set to 1000 rpm for 5 seconds at step S11. The motor rotates at a low speed (step S12), repeats reverse rotation and normal rotation at a low speed rotation (steps S13 to S15), and again rotates at a low speed of 1000 rpm for about 5 seconds (step S16), and then stops the drive motor (step S17). When 5 seconds elapse after the drive motor 3 is stopped in step S18, the electromagnetic valve 70 is closed and water supply is stopped.

  As described above, after crushing the garbage, the low-speed rotation with the tap water supplied (step S12), the rotation changing the rotation speed is repeated (steps S13 to S15), and finally the low-speed rotation (step S16). Then, the drive motor is stopped (step S17), so that a water follow-up effect can be exhibited and the transportability of the crushed garbage pieces can be improved. As a result, it is possible to prevent clogging of the drain pipe that discharges garbage. In addition, as an example of rotating by changing the rotation speed after detecting the end of crushing of garbage, an example in which normal rotation, stop, reverse rotation, and stop are repeated at 1000 rpm is shown, but normal rotation and stop may be repeated. Rotation and reversal may be repeated.

  Next, an interrupt process for the normal operation process will be described with reference to FIG. The microcomputer 110 monitors whether or not the eye plate switch is turned off at all times or at predetermined time intervals as the eye plate processing execution unit shown in FIG. As shown in FIG. 7A, when the eye plate 5 attached to the drain port of the fixing member 1 is removed during the execution of the normal operation process flow, the hall sensor 35 constituting the eye plate switch and The magnet 5b is separated and the eye plate switch is turned off. In step S21, it is detected that the eye plate switch is OFF. If the eye plate switch is OFF in step S22, that is, if the eye plate 5 is removed, the drive motor 3 is urgently stopped and this flow is ended. Further, when the eye plate switch OFF is not detected in step S21, this flow is not executed. Thereby, in each process mentioned above, if a scale is removed between step S1 and step S17, a scale switch will be turned OFF and the drive motor 3 will be stopped urgently. At this time, the drive unit 130 of the drive motor 3 is configured to instantaneously short-circuit the FETs 131 and 132 so as to function as a regenerative brake and to stop immediately.

  In addition, the microcomputer 110 monitors the detection unit 140 that detects the current of the drive motor 3 constantly or at predetermined time intervals as an execution unit of the biting release process. As shown in FIG. 7B, when the crushing mechanism 4 bites and stops the garbage while executing the flow of the normal operation process, in step S25, the clogging mechanism 4 is detected to be caught, and in step S26. The drive motor 3 is reversely rotated. When the drive motor 3 is stopped in a state where garbage or the like is sandwiched between the fixed teeth 41, 41... Of the fixing ring 40 of the crushing mechanism 4 and the rotary blade 46 of the disk-shaped rotary table 44, the Hall IC is stopped rotating. Is detected and is input to the driver circuit 120 through the signal line 3a, or the increase in the current value of the detection unit 140 is input to the microcomputer 110, and the microcomputer 110 reverses to the drive motor 3 via the driver circuit 120. Supply drive signals. As a result, the disc-shaped rotary table 44 is reversely rotated to release the bite, and this flow is finished. When the bite is not detected in step S25, this flow is not executed. In addition, after the drive motor 3 is reversely rotated and the biting is released, the normal crushing operation may be restored.

  As described above, in the normal operation processing flow of the present embodiment, the operation of rotating and stopping the drive motor 3 at a low speed for an extremely short time (about 1 second or less) is repeated a plurality of times (steps S3 to S5). Can be leveled in the crushing chamber 24. The leveled garbage becomes flat on the turntable 45, and generation of vibration and noise due to unbalanced garbage can be suppressed in the low-speed crushing operation (step S6) of the next process. Further, the leveling operation before crushing is to make the garbage even in the preparation stage of low speed crushing and high speed main crushing, and full crushing and end detection are carried out by high speed crushing operation.

  Then, after crushing the garbage, the drive motor 3 is rotated at a low speed (step S12), and the reversing operation is performed a plurality of times (steps S13 to S15), and the low speed rotation is continuously stopped for a predetermined time (step S16). . In this way, after the turntable is rotated at a low speed with tap water supplied after completion of crushing of garbage, it is reversed several times, and then rotated at a low speed to smoothly dispose of the crushed garbage fragments. It can be discharged from the main body. Further, by repeating the reversing operation, garbage fragments are not discharged at a time, and the drainage pipe can be prevented from being clogged.

  The disposer D operating in this way, as compared with the conventional disposer that rotates at a high speed from the time of startup, first performs a leveling operation while changing the rotation speed at a low speed, so that it is possible to prevent unbalanced garbage along with initial crushing. it can. In the initial crushing (steps S3 to S6), the amount of crushing is very small, and since it is gradually discharged with the water supply, rapid discharge is not performed. Further, since the rotation and the stop are repeated at a low speed, the generation of noise and vibration is small, the eccentricity of the garbage on the turntable 45 of the crushing mechanism 4 can be leveled, and the next low speed crushing (step S6) or accelerated crushing (Step S7) is a preparation stage for high-speed main crushing (Step S8).

  In the low-speed crushing (step S6), the drive motor 3 is rotated at a low speed and the garbage is crushed by the crushing mechanism 4. The garbage put in the above steps is leveled, so noise and vibration are low. You can drive in the state. In this low speed crushing, the food waste leveled in the above-mentioned leveling process is gradually crushed from the outer peripheral side, and the discharged amount of crushed food waste is gradually discharged, so the water distribution pipe 6 and its downstream side are discharged. Garbage crushed in the drainage pipe is prevented from staying. This low speed crushing is operated for a preset time, in this embodiment, about 5 seconds.

  Thereafter, the rotational speed of the drive motor 3 is increased and accelerated to shift from low speed rotation to high speed rotation (step S7). That is, the rotational speed of the drive motor 3 is increased from 1000 rpm to 2500 rpm in about 15 seconds. Since the rotation speed is not increased rapidly, noise and vibration can be kept low, and the amount of crushing can be gradually increased. Furthermore, in the high-speed main crushing (step S8), the remaining garbage which is gradually crushed in 15 seconds of accelerated crushing is crushed in earnest for 5 seconds, and the garbage is shredded by preliminary crushing. Therefore, even if the crushing mechanism 4 is rotated at a high speed, no loud noise is generated and the vibration itself is at a low level. In addition, since a small amount of garbage is already discharged in the pre-leveling operation, low speed crushing operation, and accelerated crushing operation, the amount of discharge in the high speed main crushing operation is reduced, and the crushed garbage is discharged at once in the discharge chamber 25. Is not discharged to the drain pipe 6.

  In this way, garbage is crushed in three stages: low speed crushing by low speed rotation of the drive motor 3, accelerated operation crushing, and high speed crushing by high speed rotation, so efficient crushing of garbage is low noise and low vibration. Can be implemented. In addition, the crushed garbage is not discharged at a stretch, but it is performed in order of leveling operation, low-speed crushing operation, accelerated operation crushing, and high-speed main crushing operation in order, and it is gradually discharged with the supplied water. Retention is prevented. Furthermore, since the crushing mechanism 4 is composed of a disk-shaped rotary table 44 having a rotary blade 46 and a fixed ring 40 having fixed teeth 41 whose tooth depth is set to 0.8 to 1.6 mm, Therefore, it is possible to prevent clogging of drainage pipes, and the entire system using the disposer D can be operated without inconvenience such as stagnation.

  When the garbage is caught between the rotary blade 46 of the disk-shaped rotary table 44 and the fixed teeth 41, 41... Of the fixing ring 40, and the crushing mechanism 4 is in the locked state, the microcomputer 110 causes the current detection unit. The current rise at 140 is detected, or the Hall IC detects a rotation stop state, and sends a stop signal to the driver circuit 120 to stop the drive motor 3. Then, a current to be reversed is applied from the driver circuit 120 to the drive motor 3 after a predetermined time has elapsed, and the drive motor 3 is reversed. By this operation, the garbage caught in the crushing mechanism 4 is removed, and the drive motor 3 is rotated forward again to carry out crushing.

  Next, another operation pattern of the disposer of the present invention will be described in detail with reference to FIG. FIG. 9 is another operation pattern diagram of the operation control method for the drive motor of the disposer according to the present invention. In this operation pattern, the first step of changing the rotation speed at a predetermined timing and rotating the drive motor from the second step is omitted from the above-described operation pattern when the drive motor is first executed. It is characterized by rotating. Other substantially equivalent configurations are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the operation control method for the drive motor of the disposer having the operation pattern shown in FIG. 9, the control means first rotates the drive motor 3 at a low speed (step S31), accelerates it at a low speed for a predetermined time, and then gradually increases the rotational speed for acceleration. (Step S32), the main crushing is performed at a high speed for a predetermined time with the increased number of rotations (Step S33), the completion of the crushing is detected, the number of rotations is decreased, and then the number of rotations is reduced (Step S34). ). Then, the rotation speed is changed at a predetermined timing to rotate at a low speed (step S35), and then the rotation is performed at a low speed for a predetermined time (step S36), and the process ends.

  In the operation control method of the drive motor based on this operation pattern, first, preliminary crushing by low-speed rotation is performed in step S31, and vibration is not generated to increase the rotational speed gradually in step S32. It is possible to shift to main crushing by high-speed rotation. Thus, in the operation pattern of this embodiment, since the operation of leveling the garbage in the above embodiment is omitted, the entire execution time can be shortened, and the amount of garbage is particularly small. Suitable for case control.

  In the case of this operation pattern, similarly to the above operation pattern, the step of rotating the drive motor 3 at a low speed to crush at a low speed, the step of accelerating from a low speed rotation to a high speed rotation, and the step of rotating at a high speed to crush at a high speed Because the crushed garbage is not discharged in large quantities from the drain pipe 6 at a time by the stage crushing process, it is possible to prevent stagnation in the drain pipe and to perform crushing with reduced noise and vibration. .

  Although not shown, the leveling operation is performed by changing the rotation speed by rotating at a low speed (for example, 800 rpm, within 1 second) for a predetermined time and then rotating at a lower speed (for example, within 100 seconds at several 100 rpm). This operation may be repeated several times. Further, the leveling operation can be variously combined, such as rotating at a low speed for a predetermined time (for example, 500 rpm within 1 second) and then reversing at a lower speed (for example, within a few seconds at several hundred rpm). Thus, the number of rotations, the rotation time, and the stop time of the leveling operation can be changed as appropriate.

  Although one embodiment of the present invention has been described in detail above, the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention described in the claims. Design changes can be made. For example, the disposer has shown an example of automatically supplying water at the time of crushing by opening and closing a solenoid valve, but it can also be applied when manually opening a mixing faucet. That is, it is possible to reliably prevent crushing garbage from staying in the drain pipe even with manual water supply.

  Although the example which formed the two rotary blades of the crushing mechanism was described, you may comprise so that the example provided with one rotary blade and three or more rotary blades may be provided. As an example of the connection between the fixing member fixed to the sink and the disposer body, an example of connecting with a cylindrical anti-vibration rubber has been shown. You may comprise so that it may connect.

The schematic block diagram which shows the attachment state of one Embodiment of the disposer which concerns on this invention. Sectional drawing which shows the principal part structure of the disposer of FIG. The principal part top view of the disposer of FIG. (A) is a perspective view which shows the rotation part of the crushing mechanism of the disposer of FIG. 1, 2, (b) is the principal part sectional drawing. The circuit diagram which shows the control means of the drive motor of a disposer. The flowchart for operation | movement description. 7 is a flowchart showing interrupt control in the flowchart of FIG. 6. The driving | running pattern figure for operation | movement description. The other operation pattern figure of the disposer which concerns on this invention.

Explanation of symbols

  D: Disposer, 3: Drive motor (DC brushless motor), 4: Crushing mechanism, 40: Fixing ring, 41: Fixed tooth, 44: Disk-shaped rotary table, 45: Turntable, 45a, 45a: Notch : Rotary blade, 46a: High tooth part, 46b: Low tooth part, 47: Reinforcement plate, 48: Recessed part, 5: Eye plate, 6: Drain pipe, 35: Hall sensor, 50: Mixing tap, 70: Solenoid valve 80: control device (control means), 90: rectifier circuit, 100: power supply circuit, 110: microcomputer, 120: driver circuit, 130: drive unit for driving motor, 140: detection unit for crushing completion, S3 to S5 : Step of leveling garbage, S6: Step of crushing garbage at low speed, S7: Step of accelerating crushing garbage, S8: Step of crushing garbage at high speed, S12 to S16: Small pieces of garbage Step to discharge

Claims (6)

A disposer that crushes food waste by a crushing mechanism driven by a drive motor and discharges it with the supplied water.
The crushing mechanism is composed of a fixed ring in which fixed teeth are formed on the inside, and a disk-shaped rotary table that is positioned inside the fixed ring and is rotated by the drive motor to form a rotary blade.
The disposer is characterized in that the fixed tooth has a tooth depth of 0.8 to 1.6 mm. A disposer that crushes food waste by a crushing mechanism driven by a drive motor and discharges it with the supplied water.
The crushing mechanism is composed of a fixed ring in which fixed teeth are formed on the inside, and a disk-shaped rotary table that is positioned inside the fixed ring and is rotated by the drive motor to form a rotary blade.
The disposer characterized in that the rotary blade is formed by cutting and raising a part of the outer peripheral portion of the disc-shaped rotary table.   The disposer according to claim 1 or 2, wherein the disc-shaped rotary table has a cutout portion on an outer periphery thereof.   The disposer according to claim 2 or 3, wherein the disk-shaped rotary table is a fixed reinforcing plate that covers a recess formed by cutting and raising the rotary blade.   The disposer according to any one of claims 1 to 4, wherein the rotary blade has a shape in which an outer peripheral side is high and an inner peripheral side is low.   The disposer according to claim 1, wherein the drive motor is a DC motor.

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