KR20050114339A - An operating apparatus and operating method of the disposer in a dish washer - Google Patents

Abstract

The present invention relates to a dishwasher, and more particularly, to an apparatus for driving a disposer mounted inside a sump of a dishwasher and a disposer driving method.

Disposer drive device according to the present invention comprises a sump housing in which the washing water is stored; A washing pump mounted inside the sump housing to pump washing water; A washing motor for driving the washing pump and capable of forward rotation and reverse rotation; It is inserted into the rotary shaft of the washing motor disposer for grinding food waste contained in the washing water; includes.

In addition, the disposer driving method according to the present invention comprises the steps of supplying the washing water into the sump; Generating a motor operation signal from a control unit after supplying the washing water to the sump; Initial rotation of the motor by the motor operation signal; Making a rotation of the motor; And stopping the rotation of the motor by completing washing or rinsing. Included.

According to the disposer driving device and the disposer driving method of the dishwasher according to the present invention, there is an effect of preventing the bulky and hard foreign matters caught in the disposer.

Description

An operating apparatus and operating method of the disposer in a dish washer}

The present invention relates to a dishwasher, and more particularly, to an apparatus for driving a disposer mounted inside a sump of a dishwasher and a disposer driving method.

In general, the dishwasher is a household appliance that allows the dishes to be washed by removing dirt from the dishes by the pressure of the washing water sprayed through the spray nozzle.

1 is a cross-sectional view schematically showing a conventional general dish washer.

Referring to FIG. 1, a conventional dishwasher 10 includes a tub 11, a sump 12 mounted on a bottom of the tub 11 to store washing water, and a side of the sump 12. And a washing motor 13 to pump the washing water.

In addition, the dish nozzle washed by the spray nozzle connector 15 for allowing the washing water pumped from the pump integrally formed with the washing motor 13 to the spray nozzle 16, and the washing water sprayed from the spray nozzle 16 A rack 17 in which 18 is housed is included.

In detail, the motor 13 is formed with a motor shaft 14 that extends a predetermined length from the center portion and rotates. The motor shaft 14 is equipped with a disposer 20 for crushing food waste, and a mesh filter 21 for filtering the food waste from being introduced into the pump.

In the conventional general dishwasher 10 having the above configuration, when power is applied to the motor 13 and the motor shaft 14 rotates, the disposer 20 rotates together. The food waste is pulverized by the rotation of the disposer 20, and the food waste is filtered by the mesh filter 21. In addition, the washing water filtered by the food waste is sprayed through the injection hole formed in the injection nozzle 16 by rising along the injection nozzle connector 15. In addition, the food waste buried in the dishware 18 is separated from the dishware 18 by the pressure of the sprayed washing water.

Here, the motor mounted on the conventional dishwasher 10 is generally an induction motor that rotates in only one direction. In detail, the induction motor is characterized by a large rotational force of the disposer 20 because the starting torque is large. However, there is a disadvantage that the disposer 20 tends to bend or break when the bulky and hard food waste is jammed in the disposer 20 instead of the large rotary leather. Therefore, when the foreign matter is caught in the disposer 20, the motor is not properly rotated, there is a disadvantage that the motor is damaged by overloading the motor.

The present invention has been proposed to solve the above problems, and by improving the driving method of the disposer, when the bulky and hard foreign matter is caught in the disposer, the disposer can be easily rotated without overloading the motor. An object of the present invention is to propose a disposer driving device and a driving method.

Disposer drive device according to the present invention for achieving the object as described above is a sump housing in which the wash water is stored; A washing pump mounted inside the sump housing to pump washing water; A washing motor for driving the washing pump and capable of forward rotation and reverse rotation; It is inserted into the rotary shaft of the washing motor disposer for grinding food waste contained in the washing water; includes.

In addition, the disposer driving method according to the present invention for achieving the object as described above is the step of supplying the washing water into the sump; Generating a motor operation signal from a control unit after supplying the washing water to the sump; Initial rotation of the motor by the motor operation signal; Making a rotation of the motor; And stopping the rotation of the motor by completing washing or rinsing. Included.

By the configuration as described above, there is an effect that the food is stuck in the disposer, and the motor is not overloaded.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the spirit of the present invention is not limited to the embodiments presented, and other embodiments included within the scope of other inventive inventions or the scope of the present invention can be easily made by adding, changing, or deleting other elements. I can suggest.

Figure 2 is an exploded perspective view showing a sump structure of a dishwasher equipped with a disposer drive device according to the spirit of the present invention.

Referring to FIG. 2, the sump 200 of the dishwasher equipped with the disposer driving device according to the present invention includes a sump housing 290 in which the washing water supplied from the washing water supply pipe outside the dishwasher is stored, and the sump housing 290. Motor 330 mounted on the bottom of the), the motor shaft 331 protruding and rotated in the center of the motor 330, and the disposer connected to the motor shaft 331 while rotating to disassemble food ( 280). In detail, the motor 330 is preferably a BLDC motor capable of forward rotation and reverse rotation.

In addition, the pump case 256 is mounted to the upper portion of the disposer 280, the washing water stored in the sump housing 290 is pumped, and the impeller accommodated in the pump case 256 to pump the washing water 250 is included. In detail, the impeller 250 is inserted into the motor shaft 331 to pump the washing water while rotating together as the motor shaft rotates.

In addition, it is mounted between the disposer 280 and the pump case 256, to prevent the bulky debris of the food waste crushed by the disposer 280 to enter the pump case (256). Mesh filter 270 is included.

In addition, the soil chamber 230 is formed to cover the upper surface of the pump case 256, the pumping flow path is formed for guiding the flow of the washing water pumped in the pump case (256).

In addition, the upper surface of the soil chamber 230 further includes a filter 220 having a spray nozzle connector on one side of the center and the edge. In detail, the spray nozzle connector is combined with the spray nozzle to direct the washing water which has moved along the pumping flow path provided in the soil chamber 230 to each spray nozzle.

In detail, a variuo valve 260 is mounted on one side of the soil chamber 230 to selectively guide the washing water that has moved along the pumping flow path to each injection nozzle. In addition, a turbidity sensor (to be described later) is formed at a position spaced a predetermined distance from the vario valve 260 to detect a degree of contamination of the washing water flowing along the pumping flow path.

In detail, an edge portion of the filter 220 is provided with a washing water through hole 221 and a mesh filter 227 for primarily filtering food waste falling directly from the tableware. Here, the washing water falling into the washing water through hole 221 is collected by the sump housing 290. In addition, the washing water falling into the mesh filter 227 is first filtered by the mesh filter 227, and then the sump housing 290 along a drain flow path formed under the mesh filter 227. Is captured.

Meanwhile, a heater 320 for heating the washing water is inserted into the sump housing 290, and a drain pump 310 is attached to one side of the sump housing 290.

Briefly describing the flow of the washing water in the sump structure according to the present invention constituting the configuration as described above, first, the impeller 250 coupled to the motor shaft 331 rotates as the motor 330 rotates. Here, the motor 330 alternately performs weak forward rotation and reverse rotation before the main rotation starts, so that foreign matters caught between the disposers 280 are separated. The driving of the motor 330 will be described in more detail below.

On the other hand, when the motor 330 starts the main rotation, the washing water stored in the sump bottom is introduced into the pump case 256 by the rotation of the impeller 250. In addition, the washing water pumped by the rotation of the impeller 250 is secondarily purified while passing through the mesh filter 270 before flowing into the pump case 256. The upper and lower nozzles are guided along the flow path formed by the pump case 256 and the small chamber 230, respectively.

Here, the washing water is guided to the upper nozzle or the lower nozzle by the vario valve 260. In detail, the vario valve 260 allows the washing water to only open either the upper nozzle or the lower nozzle for a predetermined time. Then, after a certain time, only the other nozzles are alternately opened, so that the washing water is evenly sprayed on the upper nozzle and the lower nozzle.

Meanwhile, some of the washing water guided along the flow path passes through the turbidity sensor 400 (see FIG. 3) and is moved to the drain pump along the drain flow path formed at the outside of the soil chamber 230.

In addition, the washing water sprayed through the upper nozzle and the lower nozzle is dropped to the tub bottom surface. Then, the falling washing water is moved back to the sump housing 290 through the filter 220. The dirt contained in the wash water moved to the sump housing 290 is crushed by the disposer 280 mounted below the mesh filter 270.

Figure 3 is a perspective view showing the assembled state of the sump according to the spirit of the present invention, Figure 4 is a vertical cross-sectional view of the sump.

3 and 4, the sump 200 according to the present invention includes a sump housing 290, a motor 330 mounted at a lower end of the sump housing 290, and a motor shaft 331. The disposer 280 and a mesh filter 270 mounted on an upper side of the disposer 280 are configured.

In addition, the washing pump is mounted to the motor shaft 331, consisting of an impeller 250 located on the upper side of the mesh filter 270, and a pump case 256, the impeller is accommodated and the wash water is pumped More included.

In addition, the washing chamber pumped from the washing pump pump chamber 230 is formed so that the flow to move to the injection nozzle, and the filter 220 which is seated on the upper side of the soil chamber 230 is further included.

In detail, the soil chamber 230 is equipped with a vario valve 260 on one side to allow the pumped washing water to flow into the upper nozzle and the lower nozzle. And, the turbidity sensor 400 for detecting the contamination of the washing water is mounted on the side of the variuo valve 260.

As shown, a predetermined space is formed between the disposer 280 and the mesh filter 270, and if food waste is caught in the space, the disposer 280 may not rotate normally. Can be. Therefore, in order to prevent the above problem from occurring, it is necessary to control the operation of the motor 330, which will be described later.

5 is a flowchart illustrating a disposer driving method according to the spirit of the present invention.

Referring to FIG. 5, when power is supplied to the dishwasher and the operation button is pressed, water supply starts (ST110). When the water supply occurs, it is determined whether or not the set water level is reached by the water level detection sensor (ST120), and when it is determined that the water level is reached, the water supply is stopped (ST130).

On the other hand, when the water supply is stopped, the control unit generates a washing motor operation signal (ST140). In detail, when the motor operation signal is generated, the initial rotation step ST150 is performed in which the motor 330 performs a plurality of forward and reverse rotations. Here, the motor 300 for driving the washing pump in the washing process is preferably a BLDC motor capable of forward and reverse rotation, in the initial rotation step to the disposer 280 while repeating a plurality of rotations at a predetermined angle. Functions to remove stuck dirt. Therefore, a torque weaker than the torque generated at the time of main rotation acts. Then, it is determined whether the forward and reverse rotation is performed by the set time and the number of times the motor 330 (ST160). When the forward and reverse rotation is performed by the set time and the number of times, the process proceeds to the main rotation step (ST170). However, if the set time and number of times have not been reached, the initial rotation step ST160 is continued.

In addition, when the washing or rinsing is completed by performing the main rotation of the motor 330, the motor rotation is stopped (ST180), and the washing water stored in the sump is drained by the operation of the drain pump (ST190).

By going through the steps as described above, since the motor 330 is the main rotation after the foreign matters stuck to the disposer 280 is removed, the phenomenon that the motor is overloaded. In addition, since an excessive force is not applied to the disposer 280, the cutting or warping phenomenon of the disposer 280 is eliminated, and thus the life of the disposer 280 is longer.

According to the disposer driving device and the disposer driving method of the dish washing machine according to the present invention having the above configuration, there is an effect of preventing the bulky and hard foreign matters caught in the disposer.

In addition, by the configuration as described above there is an effect that the phenomenon that the motor is overloaded.

1 is a cross-sectional view schematically showing a conventional general dish washer.

Figure 2 is an exploded perspective view showing a sump structure of a dishwasher equipped with a disposer drive device according to the spirit of the present invention.

Figure 3 is a perspective view showing the assembled state of the sump according to the spirit of the present invention.

4 is a vertical sectional view of the sump.

<Description of the symbols for the main parts of the drawings>

200: sump 220: filter 230: soil chamber

250: impeller 256: pump case 260: Vario valve

270: mesh filter 280: disposer 290: sump housing

310: drain pump 320: heater 330: motor

400: Turbidity Sensor

Claims (7)

A sump housing in which washing water is stored; A washing pump mounted inside the sump housing to pump washing water; A washing motor for driving the washing pump and capable of forward rotation and reverse rotation; Disposer driving device of the dishwasher comprising a; disposer is inserted into the rotating shaft of the washing motor to crush the food waste contained in the washing water. The method of claim 1, The washing motor is a disposer driving device of the dishwasher, characterized in that the rotation after performing the forward and reverse rotation by a predetermined angle alternately. Supplying washing water into the sump; Generating a motor operation signal from a control unit after supplying the washing water to the sump; Initial rotation of the motor by the motor operation signal; Making a rotation of the motor; And Stopping the rotation of the motor by completing washing or rinsing; Disposer driving method of the dishwasher included. The method of claim 3, wherein The supplying of the washing water into the sump may include determining whether the set water level is reached by a level sensor. Dispensing method of the dishwasher comprising the step of generating a water supply stop signal in the control unit when the set water level is reached. The method of claim 3, wherein In the initial rotation of the motor, The motor disposer driving method of the dishwasher, characterized in that for performing a forward rotation and a reverse rotation alternately at a predetermined angle. The method of claim 3, wherein The initial rotation of the motor includes determining whether the motor has rotated by a set time and / or a set number of times. The method of claim 3, wherein The rotating step of the motor is a disposer driving method of the dishwasher, characterized in that is performed until the washing and / or rinsing process is completed.