KR20180129342A - Control method for cloth treating apparatus - Google Patents

Abstract

The present invention relates to a control method of a clothes treatment apparatus. A control method of a clothes treatment apparatus including a driving apparatus including a belt and a pulley transferring power of a BLDC motor to a clutch and the BLDC motor, the control method comprising: applying a current to the BLDC motor to accelerate the BLDC motor to a first target rpm; decelerating a rotation speed of the BLDC motor to a second target rpm; detecting a rotation speed of the BLDC motor to compare the rotation speed with a first setting rpm higher than the first target rpm; maintaining a rotation speed of the BLDC motor at the second target rpm to sense a dry amount; and performing a washing cycle according to the sensed dry amount. When the sensed rotation speed of the BLDC motor is higher than a first predetermined rpm, it is determined that the belt is separated from the pulley. When the rotation speed of the BLDC motor is lower than the first predetermined rpm, the washing cycle is performed.

Description

[0001] The present invention relates to a control method for a cloth processing apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a garment disposal apparatus, and more particularly, to a garment disposal apparatus that uses a BLDC motor to detect a wear- And a control method of the processing apparatus.

Generally, clothes processing apparatuses are household appliances that remove pollutants such as clothing and bedding by using the friction and impact of water flow accompanying the emulsification action of the detergent and the rotation of the rotating blades. In recent years, the amount of the laundry and the type of the laundry are detected by the sensor, and the washing method is automatically set. After the water is supplied to the appropriate level according to the amount and type of laundry, washing is performed by microprocessor control.

On the other hand, such a clothes processing apparatus can be classified into a top loading type clothes processing apparatus for loading laundry from the upper side downward in accordance with the loading direction of the laundry, and a front loading type clothes processing apparatus for loading the laundry from the front side to the rear side .

Here, the top-loading type clothes processing apparatus is provided with a water storage tank installed in a cabinet and a rotating tubular rotating tub having a plurality of dewatering holes inside the tub to be rotatable. A rotary blade is rotatably installed at the lower center of the rotary tub. And a drive device including a clutch and a motor for rotating the rotary vane and the rotary vane is installed at a lower portion of the water storage tank.

On the other hand, in the case of a driving apparatus provided in a clothes handling apparatus of a top loading type, generally, a motor for generating a power (rotational force) for rotating the rotating drum and a clutch for controlling the power transmitted from the motor to the rotating drum and the rotating blade Respectively. In the case of such a drive unit, the rotation shaft of the cotter and the rotary shaft of the rotary vane or the rotary vane are coaxial with each other according to the power transmission system of the motor, or the rotary shaft of the motor is separated from the rotary shaft of the rotary vane or rotary vane, As shown in FIG.

In the case of the motor provided in the driving apparatus of the clothes processing apparatus, an inverter motor of an in / out rotor type, a DC motor of an in / out rotor type, and the like can be used.

Recently, a garment processing apparatus using an inner rotor type BLDC motor has been developed, and a structural design and a power transmission structure of a driving apparatus according to use of an inner rotor type BLDC motor are improved and a control method is required

On the other hand, in the case of using the inner rotor type BLDC motor, the inner rotor type BLDC motor is driven at a relatively high rpm and the inner rotor type BLDC motor is powered by a power transmission device Pulley) is stretched or loosened, slippage occurs in the power transmission device and smooth power transmission is not possible. Therefore, there is a need to improve the structural design of the drive device and the improvement of the power transmission structure and the control method.

In the case of a belt-type and a pulley-type power transmission device for transmitting the power of a BLDC motor, it is difficult to differentiate between malfunctions due to deviation or slip of the belt. Generally, the rotation speed of the motor is rapidly increased It is the case that only the departure of the belt is sensed when it is detected that it is not decelerated.

However, when detecting the deviation of the belt from the power transmission apparatus using only the number of revolutions of the motor, the number of revolutions of the motor sensed by the slipping of the belt is similar to the number of revolutions of the motor due to the deviation of the belt, There is a problem that it is difficult to cope with the problem.

SUMMARY OF THE INVENTION The present invention has been conceived to solve the problems as described above, and it is an object of the present invention to provide a garment processing apparatus using an inner rotor type BLDC motor, which detects a rotational speed of a BLDC motor, And a control method of the processing apparatus.

According to an aspect of the present invention, there is provided a control method for a garment processing apparatus including a BLDC motor and a driving device including a belt and a pulley for transmitting power of a BLDC motor to a clutch The method comprising the steps of: accelerating the BLDC motor to a first target rpm by applying a current to the BLDC motor; decelerating the rotational speed of the BLDC motor to a second target rpm; Detecting a rotation speed of the BLDC motor and comparing the rotation speed of the BLDC motor with a first setting rpm higher than the first target rpm; And determining that the belt is disengaged from the pulley when the rotational speed of the BLDC motor sensed is higher than a first set rpm, If the rotational speed of the BLDC motor is lower than the first predetermined rpm is preferred to carry out the washing cycle.

Preferably, the step of sensing the amount of bubbles senses the amount of current of the BLDC motor by maintaining the rotation speed of the BLDC motor at the second target rpm.

It is preferable to stop the operation of the BLDC motor when it is determined that the belt is disengaged from the pulley.

And a display step of displaying to the user when it is determined that the belt is separated from the pulley.

And determining that a slip phenomenon occurs between the belt and the pulley in accordance with the sensed amount of fluid sensed in the step of sensing the amount of cans.

When it is determined that the slip phenomenon occurs, the washing cycle is preferably switched to the sleep mode washing cycle.

Preferably, the first target rpm is 40 to 50 rpm, the second target rpm is 25 to 35 rpm, and the first set rpm is 90 to 110 rpm.

The driving unit may include a clutch for selectively transmitting a rotational force to the BLDC motor, and a power transmitting unit for transmitting the rotational force of the BLDC motor to the clutch.

Wherein the power transmitting portion includes a motor pulley mounted on a rotary shaft of the BLDC motor, a clutch pulley mounted on a rotary shaft of the clutch, and an inner side connecting the motor pulley and the clutch pulley and contacting the motor pulley and the clutch pulley, It is preferable to provide a belt in which a plurality of V-shaped grooves are formed.

Preferably, the outer peripheral surface of the motor pulley has a plurality of V projections inserted into the V-groove of the belt, and the clutch pulley is formed as a flat pulley.

Preferably, a plurality of V protrusions formed on an outer circumferential surface of the motor pulley are formed at both sides of the belt in the width direction to prevent the belt from being separated from the V protrusions inserted into the V grooves.

According to the control method of the garment processing apparatus according to the present invention, in the garment processing apparatus using the inner rotor type BLDC motor, the rotation speed of the BLDC motor is sensed to detect the belt deviation and the belt slip of the driving device, There is a sustainable effect.

1 is a schematic view showing an embodiment of a clothes processing apparatus according to the present invention.
2 is a bottom perspective view showing a driving apparatus of a clothes processing apparatus according to the present invention.
3 is a side view showing a driving apparatus of a clothes processing apparatus according to the present invention.
4 is a cross-sectional view showing a clutch of a drive system according to the present invention.
5 is a plan view showing a power transmission unit of the drive system according to the present invention.
6 is a cross-sectional view showing a power transmitting portion of a driving apparatus according to the present invention.
7 is a flowchart illustrating a control process of the clothes processing apparatus according to the present invention.
8 to 10 are graphs showing changes in rpm of the motor and the clutch of the clothes processing apparatus according to the present invention.

Hereinafter, a garment processing apparatus and a control method according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In describing the present invention, the names of the individual components to be defined are defined in consideration of the functions of the present invention. Therefore, the present invention should not be construed as limiting the technical elements of the present invention. Further, the respective names defined for each component may be referred to by other names in the art.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a clothes processing apparatus according to an embodiment of the present invention; FIG.

1 is a schematic view showing an embodiment of a clothes processing apparatus according to the present invention.

As shown in FIG. 1, a top loading type clothes processing apparatus according to an embodiment of the present invention includes a case 110 having an upper opening and a door for opening and closing an upper portion, a spring 110, A rotary tub 130 rotatably provided with a plurality of dewatering holes in the water reservoir 120 and a rotatable tub 130 rotatably disposed under the rotary tub 130, And a rotary blade 136 for rotating laundry in the rotary tub 130 separately from the rotary drum 130 is rotatably installed.

A water supply unit 140 for supplying wash water to the water storage tank 120 is provided in the upper portion of the case 110 and a drainage unit 140 for draining the wash water supplied to the water storage tank 120 150 are provided.

A lower portion of the water storage tank 120 is provided with a clutch 230 for controlling power transmission to selectively rotate the rotary tub 130 and the rotary vane 136 and a BLDC motor 220 for providing power to the clutch 230, And a power transmitting portion 240 for transmitting the rotational force of the clutch 230 to the clutch 230. [

On the other hand, the case 110 forms an outer shape of the clothes processing apparatus 100 and forms an inner space in which the above-described components are installed. The case 110 may be formed of an upper housing 112 forming an upper portion of the clothes processing apparatus 100 and a lower housing 118 forming a lower portion of the clothes processing apparatus 100. The upper housing 112 is provided with a door 114 for inputting laundry in a rotary tub located inside the water storage tank 120 and controls the clothes processing apparatus 100 in front of the door 114, And a control panel 116 indicating the operating state of the processing apparatus 100 may be provided. The outer surface of the clothes processing apparatus 100 of the lower housing 118 is formed and the water storage tank 120 is bufferably supported by a separate suspension 126.

The lower part of the bottom of the water storage tank 120 is provided with a rotary tub 130 and a rotary blade 136. The lower part of the water storage tank 120 is connected to the rotary tub 130, And a driving device 200 for rotating the motor.

Meanwhile, the water tank 120 is supported in a suspended state by a suspension 126 fixed to the inner surface of the lower housing 118, and the vibration generated in the rotation tank 130 and transmitted to the water tank 120 is transmitted to the water tank 120 The vibration is relieved by the suspension 126 supporting the lower housing 118 and attenuated to the lower housing 118 and transmitted.

The rotary tub 130 is provided inside the water storage tank 120 so as to be rotatable by a driving device 200 to be described later. A plurality of dewatering nozzles 132 for discharging the washing water in the rotating tub 130 are provided on the inner circumferential surface of the rotating tub 130. The plurality of dehydrating And a rotary vane 136 is provided at the lower portion of the rotary tub 130 to rotate the rotary vane 130 so as to form a flow of washing water for washing laundry. The balancer 134 may be provided at the inlet 132 of the rotary tub 130 to compensate for the eccentricity of the rotary tub 130 due to eccentricity of the laundry when the rotary tub 130 rotates.

The water supply unit 140 is provided inside the upper housing 112 to supply wash water to the water storage tank 120. Here, the water supply unit 140 is connected to an external water supply source (not shown) and is provided with a water supply valve 142 for controlling supply of wash water. The water supply valve 142 is provided with a water supply channel 144 through which the wash water supplied by the water supply valve 142 is guided to the water storage tank 120. Meanwhile, the water supply channel 144 may further include a separate detergent supply unit (not shown) for supplying the detergent, such as the supply of wash water, for washing laundry.

The drainage unit 150 is provided at a lower portion of the lower housing 118 and is supplied to a water tank to drain the washing water generated in washing, rinsing, and dewatering of laundry. The drainage unit 150 includes a connection hose 152 in the form of a bellows connected to the lower portion of the water storage tank 120 and a connection hose 152 connected to the connection hose 152 and interlocked with the operation of the clutch 230 of the drive unit 200 A drain valve 154 (or a drain pump) for draining wash water and a drain passage 156 for guiding the wash water discharged by the drain valve 154 to the outside of the clothes processing apparatus 100.

The driving device 200 includes a BLDC motor 220 provided below the bottom surface 124 of the water storage tank 120 for generating a rotational force and a rotary motor 130 for receiving the rotational force transmitted from the BLDC motor 220, And a power transmission unit (not shown) that connects the BLDC motor 220 and the clutch 230 to transmit the rotational force of the BLDC motor 220 to the clutch 230 240).

The control unit (not shown) may control the components described above with respect to the information input through the control panel 116, and may display the operation state of the clothes processing apparatus 100 through the control panel 116. In addition, the controller may detect the belt deviation of the driving device 200 by sensing the rotational speed of the BLDC motor 220 during operation of the driving device 200 of the clothes processing apparatus 100.

Hereinafter, the driving apparatus 200 will be described in detail with reference to FIGS. 2 to 4 attached hereto.

FIG. 2 is a bottom perspective view showing a driving apparatus of a clothes processing apparatus according to the present invention, FIG. 3 is a side view showing a driving apparatus of the clothes processing apparatus according to the present invention, and FIG. Sectional view.

The driving device 200 includes a mounting plate 210 fixed to the bottom of the bottom of the water storage tank 120 and forming a space in which the BLDC motor 220 and the clutch 230 are installed, A clutch 230 installed on the other side of the mounting plate 210 to receive the rotational force of the BLDC motor 220 and a clutch 230 for transmitting the rotational force of the BLDC motor to the clutch, A power transmitting portion 240 is provided.

The mounting plate 210 has a motor mounting portion 212 for mounting the BLDC motor 220 on one side and a clutch mounting portion 214 for mounting the clutch 230 on the center portion. Also, on the other side of the mounting plate 210, a full-length mounting portion 216 for mounting electrical components (not shown) of the driving device 200 is formed.

The motor mounting portion 212 is formed to be inserted in a direction opposite to the direction in which the motor is mounted to secure a space for installing the BLDC motor 220. A BLDC motor 220 is mounted on the outer circumferential surface of the motor mounting portion 212, A plurality of fastening holes (not shown) are formed. In the case of the clutch mounting portion 214, a rotary shaft hole (not shown) for inserting the upper / lower washing shafts 232a and 232b of the clutch 230 to be described later is formed. On the outer circumferential surface of the clutch mounting portion 214, A plurality of fastening holes (not shown) for fastening the clutch housing 231 are formed.

The BLDC motor 220 includes a motor housing 225 forming an outer shape, a stator (not shown) fixed to the inside of the motor housing 225, a rotor (not shown) rotated by the stator, And a rotating shaft 226 rotated. Here, in the case of the BLDC motor 220, it is preferably the same as the structure of a general BLDC motor 220, and an inner rotor type BLDC motor 220 is used. However, the use of the outer rotor type BLDC motor 220 is not excluded, and it can be selectively used as needed.

Here, in the case of the motor housing 225, it is preferable that the motor housing 225 is integrally formed by injection molding so as to surround the outer surface of the stator and the rotor. Here, when the motor housing 225 is integrally formed by injection molding, the unnecessary internal space of the BLDC motor 220 can be reduced, and the overall size of the BLDC motor 220 can be reduced.

A pair of support brackets 227 extending to the mounting plate 210 are formed on the outer surface of the motor housing 225. The support bracket 227 is fixed to the motor housing 225 with the same material as the motor housing 225, As shown in FIG. The supporting bracket 227 is formed such that the outer diameter of the supporting bracket 227 is reduced by the injection molding of the motor housing 225 so that the position of the rotary shaft 226 of the BLDC motor 220 and the position of the rotary shaft 226 of the clutch 230 are The position of the rotation shaft 226 of the BLDC motor 220 can be compensated.

Meanwhile, in the case of the BLDC motor 220 of the driving device 200 as described above, an inverter motor is mainly used in the prior art. In the case of a driving unit of a garment processing apparatus using such an inverter motor, an inverter that converts a direct current power to an alternating current power by a switching operation and outputs the converted alternating current power to the motor, a voltage detecting unit that detects a voltage of the direct current power source, An output current detecting section for detecting an output current flowing and a control section for controlling the inverter based on the detected output current.

In the case of the driving unit of the washing machine using the inverter motor according to the related art, an inverter for driving the inverter motor is necessarily required, which causes a problem that the driving unit is structurally complicated.

Therefore, by using the BLDC motor 220 of the present invention, the driving device 200 can be simplified. In addition, since the external shape of the BLDC motor 220 is injection-molded, the installation space of the driving device 200 can be secured have.

The clutch 230 selectively transmits the rotational force received from the rotational force of the BLDC motor 220 to the rotary tub 130 and / or the rotary blades 136, and at the same time, The drain valve 154 is opened and closed.

The clutch 230 includes a clutch housing 231 that forms an outer shape of the clutch 230 and is fastened to the lower portion of the bottom of the water storage tank 120 and a clutch housing 231 that is located at the center of the clutch housing 231 and extends into the water storage tank 120 An upper washing shafts 232a which are fastened to the rotary blades 136 and an upper shrinking shafts 233a which are coaxial with the upper washing shafts 232a and penetrate the washing tubs 120 and are fastened to the rotary tubs 130, A lower washing shaft 232b for receiving the rotational force of the motor from the power transmitting unit 240 and a lower washing shrinkage shaft 233b for forming a coaxial shaft with the lower washing shank shaft and connected to the upper shrinkage shaft 233a, Gear portions 234a and 234b which are formed between the upper and lower dehydrating shafts 233a and 233b and transmit the rotation force of the lower washing shafts to the upper washing shafts and the springs 234a and 234b that connect the lower washing shafts 232b and the lower dehydrating shafts 233b, A block 236 and a clutch spring 237 of the spring block 236 cooperating with the drain valve 154, And a brake assembly for restricting rotation of the upper / lower dehydration shafts 233b.

The upper dew condenser 233a for rotating the rotary drum 130 is connected to the upper dew condenser 233a and the upper dew condenser 120 which are directly connected to the rotary drum 130 and rotate the rotary drum 130 The cylindrical drum 235 and the lower dehydrating shaft 233b having teeth formed on the lower inner circumferential surface are connected to the lower ends of the drums 235 on which the gear portions 234a and 234b are formed to rotate the BLDC motor 220 Shrinkage 233a.

The upper end of the upper dew condensation 233a is coupled with the lower connection part of the rotary tub 130 to transmit the rotational force of the BLDC motor 220 to the rotary tub 130. [ For example, the upper end of the upper dehydrase 233a may be formed in an octagonal shape to efficiently transmit the rotational force to the rotary tub 130. The upper dehydration shrinkage 233a, the drum 235 and the lower dehydration shrinkage 233b are coupled to each other by interference fit.

In order to support the rotation of the upper dehydrating shafts 233a, a bearing is provided between the upper dehydrating shafts 233a and the upper washing shafts 232a. A protrusion is formed on the upper washing shaft 232a to fix the upper washing shaft 232a to a predetermined height.

The inner circumferential surface of the drum 235 is provided with a plurality of planetary gears 234a for reducing the rotational speed of the BLDC motor while transmitting power to the upper washing shaft 232a. The planetary gear 234a has a hole penetrating in the longitudinal direction of the center portion and a shaft connected to the carrier 235a is coupled to each hole so that the planetary gear 234a can rotate while supporting the planetary gear 234a.

The planetary gear 234a rotates and revolves along the outer peripheral surface of the sun gear 234b in engagement with a later-described sun gear 234b between the carrier 235a supporting the upper / lower portion of the shaft. That is, at the time of dewatering, the planetary gear 234a and the drum 235 rotate at the same time, so that the planetary gear 234a revolves around the sun gear 234b while revolving. Here, rounded octagonal grooves are formed in the upper portion of the carrier 235a to be engaged with the lower end of the upper washing shaft 232a.

Meanwhile, a lower washing shaft 232b for transmitting the power of the BLDC motor to the planetary gear 234a is coupled to the lower dehydrating shaft 233b. A bearing is inserted between the lower washing shaft 232b and the lower washing shafts 233b to support a smooth rotation of the lower washing shaft 232b. A sun gear 234b is formed at the upper end of the lower washing shaft 232b to transmit the power of the lower washing shaft 232b to the planetary gear 234a by engaging with the planetary gear 234a. Here, the power generated by the BLDC motor can be transmitted in the order of the sun gear 234b, the planetary gear 234a, the carrier 235a, and the upper washing shaft 232a via the lower washing shaft 232b.

The clutch housing 231 constituted by the upper clutch housing 231a and the lower clutch housing 231b is fixed to the lower portion of the upper dehydrating shafts 233a and the upper portion of the drum 235 and the lower dehydrating shafts 233b by screws Respectively. The clutch housing 231 serves to protect the drum 235 and is coupled with the upper / lower dehydrating shafts 233a and 233b through bearings to support the upper / lower dehydrating shafts 233b. The clutch housing 231 is coupled to a mounting plate 210 fixed to a lower portion of the water storage tank 120 of the clothes processing apparatus 100 to fix components inside the clutch housing 231.

A brake assembly is provided on a side surface of the lower clutch housing 231b to penetrate the lower clutch housing 231b and protrude to the outside of the clutch housing 231 to restrain rotation of the drum 235. [

Here, the brake assembly restricts the rotation of the drum when the upper / lower washing shafts 232a and 232b need to be rotated only during washing and when the upper / lower dehydrating shafts 233a and 233b should be stopped momentarily during dewatering.

The brake assembly includes a brake lever 238 that is operated by a separate actuator (not shown), and a through-shaft 238 that penetrates through the upper clutch housing 231a and the brake lever 238 and the lower clutch housing 231b. A brake spring 238b coupled to the through shaft 238a and for applying elastic force to the brake lever 238 and a brake band 238c connected to the brake lever 238 for braking the drum 235 ).

On the other hand, the operating body for operating the brake lever 238 can be operated by a multi-stage operation. That is, the brake assembly can be controlled by the operation of pulling and returning the brake lever 238 of the brake assembly while the actuator is operated in one-stage or two-stage operation.

Here, when the operating body does not operate, that is, in the off state, the brake band 238c of the brake assembly contracts and surrounds and restrains the drum 235. [ However, when the operating body performs the one-step or two-step operation, the brake band 238c is relaxed, and the drum 235 is released from the brake band 0, and free rotation is possible.

On the other hand, when the drum 235 is restrained by the brake band 238c, the upper / lower dehydrating shafts 233a and 233b are also restrained, and rotation of the rotary tub 130 is restrained. However, when the drum 235 is released from restraint, the upper / lower dehydrating shafts 233a and 233b are freely rotatable, so that the rotary tub 130 can rotate freely.

On the other hand, a drain valve 154 interlocked by a brake lever 238 is disposed on the side of the operating body. The operating body can simultaneously control the drain valve 154 in conjunction with the operation of the brake lever 238. [ Here, the drain valve and the brake lever are connected by a separate connection link, and the connection link is interlocked with the operation of the brake lever of the operating body to operate the drain valve interlocked.

Hereinafter, the power transmitting portion 240 will be described in detail with reference to FIGS. 5 to 6 attached hereto.

FIG. 5 is a plan view showing a power transmission unit of a driving apparatus according to the present invention, and FIG. 6 is a sectional view showing a power transmission unit of the driving apparatus according to the present invention.

The power transmission unit 240 transmits the rotational force of the rotary shaft 226 of the BLDC motor 220 to the lower washing shaft 232b of the clutch 230 at a predetermined reduction ratio. The power transmission unit 240 includes a motor pulley 241 provided on the rotary shaft 226 of the BLDC motor 220 and a clutch pulley 244 and a motor pulley 242 provided on the lower washing shaft 232b of the clutch 230, And a multi-groove belt 246 connecting the clutch pulley 244 and the clutch pulley 244.

Here, the multi-groove belt 246 is formed of a belt having a predetermined elastic force to transmit the rotational force of the motor pulley 241 to the clutch pulley 244, and the inner surface of the multi-groove belt 246, A plurality of V grooves 246 are formed in the surface of the pulley 241 and the clutch pulley 244 to form a V-shaped cross section along the longitudinal direction of the multi-groove belt 246 in order to improve the frictional force with the motor pulley 241. [ (246a) is formed. Here, the number of the V grooves 246a formed in the multi-groove belt 246 is not limited, but preferably 5 to 7 V grooves 246a may be formed.

The motor pulley 241 is provided on the rotating shaft 226 of the BLDC motor 220 and transmits the rotating force of the rotating shaft 226 of the BLDC motor 220 to the multi- A plurality of V projections 242a are formed on the outer circumferential surface of the motor pulley 241 so as to be inserted into a plurality of V grooves 246a formed in the multi-groove belt 246, Each V protrusion 242a may be inserted into the V groove 246a of the multi-groove belt 246 to increase the frictional force with the multi-groove belt 246. [

In the case of the V-shaped protrusion 242a formed on the motor pulley 241, it is preferable that the V-shaped protrusion 242a is formed corresponding to the number of the V-shaped grooves 246a formed in the multi-groove belt 246. [ Further, at both outermost ends of the V projection 242a, a pair of detachment prevention protrusions 243 for guiding the outermost side of the multiple groove belt 246 may be further formed. The separation preventing protrusion 243 guides both sides of the multi-groove belt 246 rotated along the motor pulley 241 during rotation of the motor pulley 241 to prevent the multi-groove belt 246 from being separated.

The clutch pulley 244 is provided on the lower washing shaft 232b of the clutch 230 to receive a rotational force transmitted through the multiple groove belt 246. [ The clutch pulley 244 is formed in a planar shape in which the outer peripheral surface is in contact with the surface of the multi-groove belt 246. That is, the outer circumferential surface of the clutch pulley 244 is not inserted into the V groove 246a of the multi-groove belt 246, and the multi-groove belt 246, which is in contact with the inner surface of the multi- 246, respectively.

The outer circumferential surface of the clutch pulley 244 is formed in a planar shape because the diameter of the clutch pulley 244 is relatively larger than the diameter of the motor pulley 241 so that a relatively large frictional force It is because. Further, when the motor pulley 241 of the multi-groove belt 246 and the multi-groove belt 246 when the clutch pulley 244 is mounted are mounted with a predetermined tensile force on the motor pulley 241 and the clutch pulley 244 And it is very difficult to mount the multi-groove belt 246 when the V-groove is formed in both the motor pulley 241 and the clutch pulley 244. That is, when the multi-groove belt 246 is mounted, one side of the multi-groove belt 246 is first mounted on the motor pulley 241, and the other side of the multi-groove belt 246 slides on the clutch pulley 244, Can be mounted in the form of.

The width of the outer circumferential surface of the clutch pulley 244 is preferably greater than the width of the multiple groove belts 246. A plurality of grooved belts are formed on one side of the outer circumferential surface of the clutch pulley 244, Further, a release preventing rib 245 may be further formed to prevent it from being detached.

Accordingly, the operation of the clothes processing apparatus and the driving apparatus of the clothes processing apparatus according to the embodiment of the present invention will be described in detail with reference to examples. Each element mentioned below should be understood with reference to the above description and drawings.

In the meantime, regarding the control method of the clothes processing apparatus 100 according to the present invention, a detailed description of the washing, rinsing and dewatering steps of the clothes processing apparatus is omitted, The operation of the driving device 200 and the process of detecting the belt deviation of the driving device 200 will be described in detail.

The driving device 200 as described above is operated as follows in the washing, rinsing and dewatering strokes. First, in the washing operation, when the brake lever 238 is operated in the pushing direction, the clutch spring 237 interlocked with the brake lever 238 is twisted in the direction of expanding the diameter.

As a result, the clutch spring 237 having an increased diameter maintains a state of being spaced apart from the outer peripheral surface of the spring block 236. Here, the rotational force of the BLDC motor 220 is transmitted to the clutch pulley 244 provided on the lower washing shaft 232b from the motor pulley 241 by the multi-groove belt 246.

The rotational force transmitted to the clutch pulley 244 of the lower washing shaft 232b is transmitted from the upper washing shaft 232a to the rotary blade 136 through the lower washing shaft to rotate the rotary blade 136 and the carrier 235a And rotates the rotary tub 130 in the direction opposite to the rotation of the rotary vane 136. [

When the brake lever 238 is operated in the pulling direction during dehydration, the clutch spring 237 linked to the brake lever 238 is twisted in the direction in which the diameter is reduced.

Accordingly, when the diameter of the clutch spring 237 is reduced, the clutch spring 237 simultaneously engages the lower dehydrating shafts 233b and the spring blocks 236 by the restoring force of reduced diameter.

Meanwhile, when the lower washing shaft 232b having received the power of the BLDC motor 220 is rotated, the lower washing axis 232b and the fixed spring block 236 rotate as the lower washing axis 232b. At this time, the clutch spring 237, which is engaged with the spring block 236 and the lower dehydrating shafts 233b, receives rotational force in the winding direction. Here, by the rotational force of the clutch spring 237, the spring block 236 and the lower dehydrating shrinkage 233b are connected with stronger force. The drum 235 and the planetary gear 234a can be rotated integrally by the connection force between the spring block 236 and the lower dehydrating shafts 233b. Therefore, at the time of dewatering, not only the rotary vane 136 but also the rotary bath 130 can be rotated at a high speed in the same direction to advance dehydration.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method of detecting a deviation of a belt in a garment processing apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 7 is a flowchart showing the control process of the clothes processing apparatus according to the present invention, and FIGS. 8 to 10 are graphs showing changes in rpm of the motor and the clutch of the clothes processing apparatus according to the present invention.

9 is a graph showing changes in rpm of the motor and the clutch in the belt disengaged state, and Fig. 10 is a graph showing changes in the rpm of the motor and the clutch in the belt slip state. Fig. Fig.

The driving apparatus 200 of the present invention uses the inner rotor type BLDC motor 220 and the motor of the BLDC motor 220 is controlled by the amount of load applied to the BLDC motor 220, The rotation speed is changed.

 Accordingly, the control unit continuously senses the rotation speed of the BLDC motor 220 when the drive unit 200 is driven, and compares the sensed rotation speed and the set rotation speed to determine the normal operation state of the drive unit 200 .

Further, in the control method of the present invention, whether or not the multi-groove belt of the power transmitting portion provided in the driving device 200 of the clothes processing apparatus 100 is normally operated can be determined by sensing the rotation speed of the BLDC motor 220 .

Meanwhile, in the control method of the present invention, in the washing process of the washing machine including the washing process, the rinsing process, and the dewatering process, the process may be performed in the process of detecting the laundry quantity to detect the laundry quantity in order to proceed the washing process. Therefore, the detailed description of the overall process of the washing, rinsing, and dewatering steps will be omitted, and the departure and slip detection of the multi-groove belt of the power transmitting device in the lot sensing step will be described in detail.

Hereinafter, as shown in FIG. 7, a description will be given of a method of detecting a belt deviation and a slip of a driving apparatus according to an embodiment of the present invention.

When the operation signal of the clothes processing apparatus 100 is inputted by the user, the control unit applies a current to the BLDC motor 220 to set the amount of the laundry stored in the rotary tub, (Step S110) with a time set in one direction or both directions and a set rotational speed.

The rotation speed of the rotary tub 130 is set to a first target rpm (about 40 to 50 rpm, preferably, about 30 to 50 rpm, for example) in accordance with the amount of laundry stored in the rotary tub 130, Is increased to 46 rpm), and when the first target rpm is reached, the constant rpm is maintained (step S120).

Here, the controller may intermittently detect or continuously detect the rotational speed of the BLDC motor 220 at a predetermined interval as the BLDC motor 220 is rotated at the first target rpm, and may continuously detect the rotational speed of the BLDC motor 220 until the first target rpm is satisfied Acceleration of the motor is repeated.

Then, the control unit controls the rotation speed of the BLDC motor 220 from the first target rpm to the second target rpm lower than the first target rpm to detect the normal operation state of the belt of the power transmission unit, About 25 to 35 rpm, preferably 30 rpm) (step S130).

Meanwhile, in decelerating the rotational speed of the BLDC motor 220 to the second target rpm, the control unit intermittently senses or continuously senses the rotational speed of the BLDC motor 220 at a predetermined interval to detect the power of the power transmitting unit 240 It can detect the delivery status.

On the other hand, the rpm of the BLDC motor 220 and the rpm of the clutch when the BLDC motor 220 is decelerated to the second target rpm are as shown in Fig. As shown, when the BLDC motor 220 is decelerated from the first target rpm to the second target rpm, the first target rpm to the second target rpm of the BLDC motor is decelerated to the second target rpm, and the clutch 230 is connected to the clutch 230 The rpm of the clutch 230 is decelerated in a state of having a predetermined slope in accordance with the inertial rotation of the clutch 230, .

That is, when the rpm deceleration of the BLDC motor 220 and the rpm deceleration of the clutch 230 proceed as shown in FIG. 8, it can be determined that the belt of the power transmitting portion 240 is normally operated.

On the other hand, the control unit can determine whether the belt of the power transmission apparatus is disengaged in decelerating the rotation speed of the BLDC motor to the second target rpm. That is, when the rotation speed detected by the BLDC motor is detected to be higher than the first set rpm in decelerating the BLDC motor to the second target rpm, it is possible to detect the deviation of the power transmission device from the belt.

Here, the controller compares the rotation speed of the BLDC motor 220 sensed in decelerating the rotation speed of the BLDC motor 220 to the second target rpm with the first setting rpm (about 90 to 110 rpm, preferably 100 rpm) It is possible to determine the deviation of the multi-groove belt 246 of the power transmitting portion 240 (Step S140).

9, when the multi-groove belt 246 of the power transmitting portion 240 is released when the rotational speed of the BLDC motor 220 is reduced from the first target rpm to the second target rpm, The rotational speed sensed by the clutch 220 is rapidly increased (diverged), and at the same time, the rotational speed of the clutch 230 is rapidly increased by the inertial rotation.

Accordingly, when the rotational speed sensed by the BLDC motor 220 exceeds the first setting rpm, the control unit may cause the multi-groove belt 246 of the power transmitting portion 240 to be separated from the motor pulley 241 or the clutch pulley 244 (Step S141).

If it is determined that the multi-groove belt 246 of the power transmission unit 240 has been disengaged, the control unit stops the operation of the BLDC motor and displays the detachment of the belt of the power transmission apparatus through the control panel 116 (Step S143).

Then, the controller determines whether the rotation speed of the BLDC motor 220 is normally decelerated to the first target rpm. That is, it is determined whether the rotational speed of the BLDC motor to be sensed is equal to or smaller than the second setting rpm (about 25 to 35 rpm, preferably 30 rpm). If the rotational speed sensed by the BLDC motor is greater than the second setting rpm, The deceleration to the target rpm is repeatedly carried out (step S150)

Here, when the rotational speed rpm of the detected BLDC motor is less than or equal to the second set rpm, the rotational speed of the BLDC motor 220 is maintained at the second target rpm, and the current of the BLDC motor 220 is sensed, (Step S160)

In the meantime, when detecting the amount of laundered laundry, it is necessary to compare the detected amount with the set amount to determine whether the belt slip occurs in the power transmitting portion. If the sensed amount is larger than the set amount, When the amount is smaller than the set amount, the belt slip of the power transmitting portion is determined (step S170).

Here, the reason why the belt slip of the power transmitting portion 240 is determined when the detected amount of sensed paper is smaller than the set amount of paper is that when the slip occurs in the belt of the power transmitting portion 240, Because.

On the other hand, when a slip is generated in the belt of the power transmitting portion, the rpm of the BLDC motor 220 and the rpm of the clutch are as shown in FIG. As shown, when the BLDC motor 220 is decelerated from the first target rpm to the second target rpm, the first target rpm to the second target rpm of the BLDC motor 220 is decelerated to the second target rpm, The inertial rotation is progressed according to the weight of the laundry stored in the rotary tub 130 and the rotary tub 130 connected to the rotary tub 130. [

Here, the rpm of the clutch 230 according to the inertial rotation progresses to decelerate as the waves are formed as the slip of the multi-groove belt 246 occurs. Accordingly, the generation and recovery of the belt slip of the power transmitting portion 240 can be sensed according to the ripple generated at the rpm of the clutch 230.

On the other hand, if it is determined that the detected amount is larger than the set amount, the controller senses the number of occurrences of the slip phenomenon occurring in the clutch 230 when the BLDC motor 220 decelerates from the first target rpm to the second target rpm, If it is detected that the slip has occurred in the belt of the power transmission apparatus when the number of times of detection is more than the predetermined number and when the number of times of occurrence of the slip phenomenon occurring in the clutch is detected to be equal to or less than a predetermined number, It is determined that the laundry has been bubbled and the bubble dispersion of the laundry is restarted (step S171).

Here, when the number of occurrences of the slip phenomenon generated in the clutch 230 is detected to be more than a predetermined number when the BLDC motor 220 is decelerated from the first target rpm to the second target rpm, It is determined that belt slip has occurred when it is determined that a slip has occurred in the multi-groove belt 246 or when the bag dispersion of the laundry is performed again according to the belt slip judgment, The washing cycle is switched to the washing cycle according to the sleep mode (step S173).

In addition, when the BLDC motor 220 decelerates from the first target rpm to the second target rpm, the number of times of occurrence of the slip phenomenon occurring in the clutch 230 is excessively large, or when the occurrence range is excessively wide , It is possible to indicate that the washing operation can not proceed due to the belt slip of the power transmitting portion 240 through the control panel 116 provided separately when the washing process can not proceed due to the slip phenomenon.

Then, the control unit sets the amount of cusp according to the detected amount and the set amount of the cusp corresponding to the detected cusp amount and the set amount and sets the cusp amount according to the table in which the cusp amount is set (S175) (Step S177). Here, the washing cycle according to the sleep mode advances the rotational speed of the BLDC motor 220 to a relatively lower rotational speed than the washing cycle according to the normal mode, so that slip occurs in the multi-groove belt 246 of the power transmitting unit 240 Can be prevented.

On the other hand, if the sensed quantity detected in the sensed quantity (step S170) is greater than the preset quantity, the control unit sets the sensed quantity of sensed quantity (S180), and proceeds to the normal mode (Step S190).

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is clearly understood that the same is by way of illustration and example only and is not to be taken by way of limitation, The present invention may be modified in various ways. Therefore, modifications of the embodiments of the present invention will not depart from the scope of the present invention.

100: garment processing apparatus 110: case
120: Water tank 130: Rotation tank
140: water supply unit 150: drainage unit
200: driving part 210: mounting plate
220: BLDC motor 230: clutch

Claims (11)

A control method for a garment processing apparatus including a BLDC motor and a driving device including a belt and a pulley for transmitting power of a BLDC motor to a clutch,
Accelerating the BLDC motor to a first target rpm by applying a current to the BLDC motor;
Decelerating the rotational speed of the BLDC motor to a second target rpm;
Sensing the rotational speed of the BLDC motor and comparing the rotational speed of the BLDC motor with a first set rpm higher than the first target rpm;
Maintaining the rotational speed of the BLDC motor at the second target rpm to detect a cunning amount;
And performing a washing cycle in accordance with the detected bout amount,
Wherein the controller determines that the belt is disengaged from the pulley when the sensed rotation speed of the BLDC motor is higher than the first set rpm and performs the washing stroke when the rotation speed of the BLDC motor is lower than the first set rpm. And a control unit for controlling the clothes processing apparatus. The method of claim 1, wherein the step
And controlling the rotation speed of the BLDC motor at the second target rpm to sense the amount of current of the BLDC motor. The control method of a garment processing apparatus according to claim 1, wherein, when it is determined that the belt is separated from the pulley, the operation of the BLDC motor is stopped. The control method of a garment processing apparatus according to claim 1, further comprising a display step of displaying to the user if the belt is judged to be detached from the pulley. The method according to claim 1, further comprising the step of determining that a slip phenomenon occurs between the belt and the pulley in accordance with a sensed amount of laundry sensed at the step of sensing the amount of cafes . 6. The method of claim 5,
Wherein when the slip phenomenon is determined to occur, the washing cycle is switched to the sleep mode washing cycle and the washing process is performed. The control method of a garment processing apparatus according to claim 1, wherein the first target rpm is 40 to 50 rpm, the second target rpm is 25 to 35 rpm, and the first setting rpm is 90 to 110 rpm. 2. The apparatus according to claim 1,
A clutch for selectively transmitting a rotational force to the BLDC motor; and a power transmission unit for transmitting the rotational force of the BLDC motor to the clutch. The motorcycle according to claim 8, wherein the power transmission unit comprises: a motor pulley mounted on a rotary shaft of the BLDC motor; a clutch pulley mounted on a rotary shaft of the clutch; and a motor shaft connected to the motor pulley and the clutch pulley, Wherein a plurality of V-shaped grooves are formed in the longitudinal direction on an inner side surface of the V-shaped groove. The control method of a garment processing apparatus according to claim 7, wherein a plurality of V projections inserted into a V-groove of the belt are formed on an outer circumferential surface of the motor pulley, and the clutch pulley is formed as a flat pulley. The motorcycle according to claim 7, wherein a plurality of V protrusions formed on an outer circumferential surface of the motor pulley are provided at both sides of the belt in the width direction with a release protrusion protruding more than a V protrusion inserted in the V groove, And a control unit for controlling the clothes processing apparatus.

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