KR20090052691A - Dryer and controlling method of the same - Google Patents

Abstract

The present invention relates to a dryer, and more particularly to a dryer that is convenient to use.

According to the present invention, there is provided a drum including an object to be dried; An induction motor for driving the drum; An air supply device for supplying air into the drum for drying the dried object; A quantity detection unit for detecting a quantity of water through a state variable of the induction motor, which is changed according to the amount of the dry matter contained in the drum; And it provides a dryer comprising a controller for controlling the operation of the induction motor and the air supply by setting the operation time according to the detected amount.

Dryer, Control Panel, Steam

Description

Dryer and controlling method {Dryer and controlling method of the same}

The present invention relates to a dryer, and more particularly to a dryer that is convenient to use.

In general, a dryer is a device for automatically drying the dry items in the wet state after washing, the configuration of such a dryer as follows.

1 is a view schematically showing the configuration of a dryer.

As shown in FIG. 1, the dryer according to the present invention includes an input unit 201 for inputting a set value of a drying course and a display unit for displaying a drying and cooling state from a value set in the input unit 201 ( 203, a humidity sensor unit 205 for sensing the humidity inside the drying, a temperature sensor unit 207 for detecting the temperature inside the drying and cooling, the input unit 201 and each sensor unit The controller 209 for controlling the drying and cooling by using the information input from the heater, and the heater and motor driver 213 controlled by the controller 209 to perform the drying and cooling operations using the heater and the motor. ), And a power supply unit 211 for applying power to the heater and motor driving unit 213 and the controller 209.

Here, the humidity sensor unit 205 detects the humidity of the dried object or the inside of the drum in which the dried object is to determine whether drying is completed or the like. In addition, the temperature sensor unit 207 prevents the temperature of the drum from being damaged due to heat due to an excessively high temperature inside the drum.

The controller 209 receives information from the humidity sensor unit 205 and the temperature sensor unit 207 to determine a drying state, and performs a drying operation using a device such as the heater and the motor according to the determination result. The heater and the motor driving unit 213 is controlled.

 Referring to the drying time control method of the conventional dryer configured as described above are as follows.

2 is a flow chart of drying time control in a conventional dryer.

As shown in FIG. 2, first, a user inserts an object to be dried into a dryer, and then drying is started by operating the input unit 210 to operate the driving unit 213 (S210). In other words, the drying administration begins.

Then, the display unit 203 displays the drying time. Herein, the drying time means a time from the start of the drying administration to the end of the drying stroke, and the predetermined time is always displayed at the beginning of the drying administration. Accordingly, by displaying the drying time, the user recognizes that the drying administration ends when the drying time elapses. In addition, the drying time is discounted as the drying proceeds so that the user can recognize the remaining operating time by viewing it.

When the drying process proceeds, the temperature sensor unit 207 measures the drying start temperature. Of course, once the drying operation has progressed the drying start temperature may change, so this drying start temperature will be measured at least before the heater is driven.

Next, after the start of drying, measuring the time to reach the intermediate temperature of the drying start temperature and the predetermined maximum drying temperature (S220), the drive unit using a constant multiple of the measured time to reach the intermediate temperature The remaining drying time is reset (S230).

In the process of performing drying (S240), drying is performed during the reset remaining drying time (S250), and the drying is completed (S260).

At this time, when drying is completed, the operation of the heater of the heater and the motor driving unit 213 is stopped and cooling is started.

Finally, the controller 209 displays the completion of the drying on the display unit 203 so that the user can recognize that the drying is complete.

On the other hand, in many cases, the drying operation includes drying and cooling. As described above, the drying time is different from the initially set time. This is because, if drying is performed only for a predetermined time, the drying may be insufficient or excessive. Thus, the drying time can be reset, in which case the total drying stroke time is variable.

For example, if the drying time is initially set to 44 minutes and the cooling time is set to 6 minutes, and the total drying administration time is set to 50 minutes, the drying time is 54 minutes. 10 minutes increase. Of course, this elongated 10 minutes is reflected in the remaining drying time.

More specifically, when the drying stroke time is increased by 10 minutes, even if the preset 44 minutes have elapsed, 6 minutes may be displayed as the remaining time. That is, the remaining time may be displayed as 6 minutes without changing the time remaining for 10 minutes. Of course, it is also possible to display by adding 10 minutes to the remaining time before 44 minutes have elapsed.

On the other hand, in many cases such a change in the drying time is made by reflecting the humidity and / or temperature detected by the above-described humidity sensor unit 205 and / or temperature sensor unit 207.

3 illustrates this example. In the drying process, when the controller starts drying, as illustrated in FIG. 3, the controller may read humidity and temperature detected by the humidity sensor unit 250 and the temperature sensor unit 270 over time.

At this time, the humidity (250, 500) of the humidity and temperature changes detected by the humidity sensor unit 250 and the temperature sensor unit as the temperature increases as time passes during drying, while the humidity is lowered to each other can be seen that the height is changed from each other. have.

The above-described dryer detects the change in temperature with time, measures the time to reach the median of the preset maximum drying temperature at the temperature at which drying starts, and the time to reach the median between the start temperature and the highest drying temperature. By using the drive unit can change the time to dry by operating. It is possible to change the drying time by the data measured by the humidity sensor 250 instead of the temperature sensor 270 in the drying process.

Here, at the start of drying, the maximum drying temperature (about 70 ℃) can be reached over time at room temperature (about 20 ℃), the maximum drying temperature is stored in the controller 209 in advance.

For example, when drying is started, the time (Δt1) of reaching the intermediate temperature (45 ° C.) between the temperature of the start of drying and the highest drying temperature is measured, and a constant number at the time of reaching the measured intermediate temperature (Δt1) The multiplication value is set as the remaining drying time (Δt2) of operating the driving unit so that drying is performed.

The above-described dryer has the following problems.

In a conventional dryer, a predetermined drying stroke time is always displayed, and as the drying proceeds, the drying stroke time is reset. That is, in the case of a drying operation consisting of drying and cooling, the drying time may be varied. In this case, as described above, the remaining time may not be changed and may be displayed as much as the reset time (increased time). In the opposite case, the remaining time may be displayed by omitting the reset time (reduced time).

Thus, in either case, a user may be mistaken for the drying administration time. That is, the user may think that the dryer is not operating properly unless the remaining drying time is changed. In addition, even if the remaining time is displayed, for example, 20 minutes and suddenly changed to 6 minutes, the user may think that the dryer is not operating properly.

Therefore, there is a need to provide a dryer that gives the user confidence by displaying a more accurate drying administration time to the user. This prevents misunderstanding or confusion for the user, while also allowing the user to effectively use time. Because the user is not only drying but also other housekeeping tasks, such as when the user checks whether the drying is not finished even after the expected time, because the user has done unnecessary labor.

On the other hand, recently, products that improve washing power and reduce energy by supplying steam to laundry by adding a steam generator to a washing machine, particularly a drum washing machine, have been in the spotlight.

On the other hand, since the conventional dryer is simply an apparatus for drying the dry matter, such a dryer has a need for performing an additional function as well as drying of clothes. This is because, after the drying is finished, there are problems in that wrinkles are generated in the dry matter and the ironing is to be performed separately.

On the other hand, there is a need to perform additional functions to these dryers and to make it easy for the user to use them. This is because even if the user can not easily use the additional function having a good effect or performance, the user will use only the conventional drying function.

The dryer typically comprises a control panel provided for interfacing with the user. Through such a control panel, the user inputs various information into the dryer, and also obtains various information through this.

Therefore, it is necessary to allow the user to easily select the drying function and the additional function through the control panel, and also when the drying function and the additional function are related to each other, the user can easily use the dryer without confusion. Need to provide

In addition, the operation of the dryer needs to be controlled to perform the optimum additional function in performing the additional function. This will also be related to the energy savings of the dryer.

In addition, it would be desirable to reduce the time required to perform these additional functions. This is because the total time required will be increased by performing additional functions as well as drying functions.

The present invention is to solve the above problems.

It is also an object of the present invention to provide a dryer in which the drying time is changed to minimize the confusion and inconvenience to the user.

An object of the present invention is to provide a dryer that displays a more accurate drying time to the user, the customer can accurately predict the drying time.

In addition, an object of the present invention is to provide a dryer that allows the user to utilize the time more effectively to improve the convenience and reliability.

It is another object of the present invention to provide a dryer having an additional function in addition to the conventional drying function to enhance the convenience of use.

In addition, an object of the present invention is to provide a dryer that has a function of enabling wrinkle removal, electrostatic removal or easily ironing on a dryer, thereby enhancing convenience of use.

In addition, an object of the present invention is to provide a dryer that is easy to use by allowing the user to easily select the drying function and additional functions.

In addition, it is an object of the present invention to provide a dryer that performs an optimal additional function as well as minimizes the increased operating time due to the additional function. This aims to provide a dryer that saves energy and allows users to utilize their time more effectively.

In order to achieve the above object, the present invention is a drum containing a dry matter; An induction motor for driving the drum; An air supply device for supplying air into the drum for drying the dried object; A quantity detection unit for detecting a quantity of water through a state variable of the induction motor, which is changed according to the amount of the dry matter contained in the drum; And it provides a dryer comprising a controller for controlling the operation of the induction motor and the air supply by setting the operation time according to the detected amount.

Here, the quantity detection unit may be configured in the controller, it may be provided separately from the microcomputer constituting the controller.

The dryer may further include a display unit for displaying the operation time and displaying the remaining operation time as the operation proceeds.

On the other hand, the state variable of the induction motor may be variously selected.

The state variable may be at least one of an acceleration in an acceleration section or an acceleration in a deceleration section of the induction motor, and at least one of an RPM in a specific time in an acceleration section of the induction motor or an RPM in a specific time in a deceleration section. It can be either.

The state variable may be a current value when the acceleration section of the induction motor reaches a normal RPM, or may be a counter electromotive force value at a specific time of the deceleration section of the induction motor.

The dryer may further include a water supply device for supplying fine water or steam into the drum, and the amount of fine water or steam supplied into the drum may vary depending on the detected amount of water.

In addition, the operation time may include a drying time for supplying hot air into the drum and a cooling time for supplying cold air into the drum. Here, the cooling time is predetermined and the drying time may be set differently according to the detected quantity. Therefore, the drying time is set differently so that the operation time may be set differently according to the detected quantity. Of course, the cooling time may also be set differently according to the detected quantity.

If drying is completed before the set drying time has elapsed, the remaining time may be displayed after being changed to the preset cooling time.

In order to achieve the above object, the present invention also provides a control method of a dryer comprising an induction motor for driving a drum in which the object is to be accommodated, wherein the variable variable according to the amount (capacity) of the dry matter contained in the drum. A dose detection step of detecting a dose through a state variable of the induction motor; And it provides a control method of the dryer comprising a display step of displaying the remaining operation time as the operation time elapsed by setting the operation time in accordance with the detected amount.

Here, the quantity detection step may be performed in various forms.

The quantity sensing step may include: accelerating or decelerating the induction motor; And measuring the acceleration in the above step. In addition, the quantity detection step, the step of accelerating or decelerating the induction motor; And it may be made, including the step of measuring the RPM at a specific time of the above steps.

The quantity sensing step may include: accelerating the induction motor; And measuring an input current value of the induction motor when reaching the normal RPM in the step. In addition, the quantity detection step, the step of slowing the induction motor; And measuring a counter electromotive force value of the induction motor at a specific time of the step.

According to the present invention it is possible to provide a dryer with a minimum drying time is changed to minimize confusion and inconvenience to the user.

According to the present invention, it is possible to provide a dryer that displays a more accurate drying time to the user, and allows the customer to accurately predict the drying time, and provides a dryer that allows the user to utilize the time more effectively, thereby improving convenience and reliability. can do.

In addition, according to the present invention can perform an additional function using steam or fine moisture as well as drying, and can provide an optimal steam or fine moisture to provide a dryer that can efficiently and effectively perform this additional function. have.

In addition, according to the present invention can provide a dryer having an additional function in addition to the conventional drying function to enhance the ease of use.

In addition, according to the present invention, it is possible to provide a dryer that has a function of enabling wrinkle removal, static electricity removing function, or ironing easily in a dryer, to enhance use convenience.

In addition, according to the present invention it is possible to provide a dryer easy to use by allowing the user to easily select the drying function and additional functions.

In addition, according to the present invention it is possible to provide a dryer that minimizes the increased operating time due to the addition of the optimal additional function. This can provide a dryer that saves energy and allows users to use their time more effectively.

Hereinafter, with reference to the accompanying drawings will be described in detail a washing apparatus according to an embodiment of the present invention.

Hereinafter, an embodiment of a dryer according to the present invention will be described with reference to FIGS. 4 to 5. For convenience, the top loading method, the electric type, the exhaust type dryer will be described as examples. However, the present invention is not limited to this.

A rotatable drum 20, an induction motor 70 for driving the drum 20, and a belt 68 are installed in the cabinet 10 constituting the exterior of the dryer. In addition, an air supply device for supplying hot or cold air into the drum is provided. Here, the dry matter is accommodated in the drum 20.

The air supply device is provided at a predetermined position of the cabinet 10, the heater 90 (hereinafter referred to as "hot air heater" for convenience) to heat the air to create a high-temperature air (hereinafter referred to as "hot air heater"), the hot air It comprises a hot air supply duct 44 for supplying the hot air generated in the heater 90 to the drum (20). In addition, an exhaust duct 80 for discharging humid air heat-exchanged with the object to be dried in the drum 20, a blower unit 60 for sucking the humid air, and the like are also included. Of course, the condensation dryer may be provided with a condenser and a condensation duct for condensing moisture in the humid air heat exchanged with the dry matter.

Here, the configuration of supplying hot or cold air to the drum such as the heater 90, the hot air supply duct 44, the exhaust duct 80, and the blower unit 60 may be referred to as an air supply device.

Meanwhile, a steam supply device is provided at a predetermined position of the cabinet 10. Here, the steam supply device generates steam to supply steam into the drum. The steam supply device includes a steam generator 200 that heats water to generate hot steam.

Each component will be described in detail as follows.

The cabinet 10 forms an outer shape of the dryer, and includes a base 12 forming a bottom surface, a pair of side covers 14 installed vertically on the base 12, and the side covers 14. The front cover 16 and the rear cover 18, which are respectively installed on the front and rear of the, is configured to include a top cover 17 located on the upper side of the side cover (14). The control panel 19 having various operation switches or the like is normally located on the top cover 17 or the front cover 16, and the door 164 is provided on the front cover 16. The rear cover 18 is provided with an inlet 182 for allowing outside air to flow therein and an exhaust hole 184, which is a final passage through which the air of the drum 20 is discharged to the outside.

The inner space of the drum 20 functions as a drying chamber in which drying proceeds, and has a lift 22 therein.

On the other hand, the front supporter 30 and the rear supporter 40 are provided between the drum 20 and the cabinet 10 (front cover 16 and rear cover 18). A drum 20 is rotatably installed between the front supporter 30 and the rear supporter 40, and a sealing for preventing leakage between the front supporter 30 and the rear supporter 40 and the drum 20, respectively. A member (not shown) is provided. That is, the front supporter 30 and the rear supporter 40 form a drying chamber by blocking the front and rear surfaces of the drum 20 and serve to support the front and rear ends of the drum 20.

The front supporter 30 is formed with an opening for communicating the drum 20 with the outside of the dryer, the opening is selectively opened and closed by the door 164. In addition, the front supporter 30 is connected to the lint duct 50 which is a passage through which the air of the drum 20 is discharged to the outside, and the lint duct 50 is provided with a lint filter 52. One side of the blower unit 60 is connected to the lint duct 50, the other side of the blower unit 60 is connected to the exhaust duct 80, and the exhaust duct 80 is provided at the rear cover 18. It communicates with the exhaust hole 184. Therefore, when the blower unit 60 is operated, the air in the drum 20 is discharged to the outside through the lint duct 50, the exhaust duct 80, and the exhaust hole 184. At this time, foreign matter such as lint is filtered in the lint filter 52. In general, the blower unit 60 includes a blower 62 and a blower housing 64, and the blower 64 is generally connected to and driven by a motor 70 for driving the drum 20.

The rear supporter 40 is formed with an opening 42 which is usually composed of a plurality of through holes, and the hot air supply duct 44 is connected to the opening 42. The hot air supply duct 44 communicates with the drum 20 to serve as a passage for supplying hot air to the drum 20. Therefore, the hot air heater 90 is installed at a predetermined position of the hot air supply duct 44.

Hereinafter, a detailed configuration of the steam generator 200 will be described with reference to FIG. 6.

The steam generator 200 includes a water tank 210 in which water is accommodated therein, a heater 240 mounted in the water tank 210, and a water level sensor for measuring the water level in the water tank 210. 260, and a temperature sensor 270 for measuring the temperature of the water contained in the water tank (210).

The water level sensor 260 is generally composed of a common electrode 262, a low level electrode 264, and a high level electrode 264, so that the common electrode 262 and the high level electrode 264 are energized or the common electrode 262 and the low level electrode ( 266) detects the high and low water levels according to whether or not the power is supplied.

One side of the steam generator 200 is connected to a water supply passage 220 for supplying water extending from a water accommodating portion to be described later, and the steam passage 230 for discharging steam is connected to the other side of the steam generator 200. The tip of the steam flow path 230 is preferably a nozzle 250 is installed to increase the injection efficiency of steam.

Therefore, according to the present invention, the steam is supplied to the inside of the drum through the steam supply apparatus including the steam generator 200.

However, the steam generator 200 may be configured in other forms. That is, the steam contained in the water tank 210 may be heated to heat the water flowing into the pipe-shaped housing (not shown) without generating steam. For convenience, the former is called a tubular steam generator and a tubular steam generator.

Since the tube type steam generator generates steam by heating water rapidly, the steam generation time can be greatly reduced compared to the tube type. However, there is a fear that hot water other than steam may be supplied into the drum. On the other hand, the barrel type steam generator has an advantage of stably supplying steam into the drum.

Here, using steam in the dryer has the following effects.

The dryer typically dries the dry matter through hot air. As the drying proceeds, wrinkles or wrinkles occur in the dry matter, and additional ironing is required after the drying is completed. However, as the drying proceeds, the occurrence of such wrinkles or wrinkles can be alleviated or eliminated by supplying steam to the dried object. This is because steam is supplied to the wrinkled portion or the wrinkled portion of the dry matter, and the wrinkles are removed by drying the moisture by hot air. Therefore, it is preferable that the time of supplying the steam is after the drying has been performed to some extent.

Steam, on the other hand, is very fine particles that are hot water particles on the order of several microns. Therefore, such steam supplies moisture and high temperature to the dry matter to remove odor particles. Therefore, the odor can be effectively removed through the dryer using steam.

It is also possible to supply a predetermined amount of moisture to the garment through steam before drying is complete. Of course, it will be possible to supply a predetermined amount of moisture to the clothes through the steam after the drying is finished. By evenly supplying the clothes with steam, the user can prevent the unpleasant feelings caused by the static electricity of the clothes when the user takes the clothes out of the drum.

Here, steam is a medium for supplying moisture and high temperature to the dry matter. As described above, steam has very fine particles and is high in temperature, so it penetrates well to the dry matter. Therefore, it is possible to absorb the moisture evenly throughout the dry matter, and to effectively prevent excessive moisture absorption in only a specific part.

FIG. 7 illustrates an embodiment in which the steam generator 200 is not connected to an external water supply source and is formed in such a manner that a user directly inputs water supplied to the steam generator 200. This makes it possible to use steam dryers conveniently even in environments where water supply facilities and drainage facilities are not available. Of course, the water may be supplied to the steam generator through an external water supply as in a general washing machine.

Hereinafter, a structure for supplying water to the steam generator 200 and the steam generator 200 according to an embodiment of the present invention will be described.

A drawer-type container (hereinafter referred to as a "drawer") 500 capable of drawing in / out at a predetermined position of the dryer according to the present invention is installed, and the tank 400 is mounted to the drawer 500. Do. Here, the tank is a water receiving portion for receiving water, and the water contained in the water receiving portion is supplied to the steam generator 200.

Rather than connecting the tank 400 directly to the water supply flow path 220, the tank 400 is mounted on the drawer 500 and the drawer 500 is indirectly drawn in / out of the drawer 500. It is preferable to couple / separate the water supply passage 220. This is because the amount of water used in the dryer is very small compared to the washing machine, and in addition, the dryer may be used in an environment in which a water supply system such as a water supply system is not suitable.

The drawer 500 may be provided at the front of the dryer, that is, at the front of the dryer cabinet. In particular, the drawer 500 is preferably provided in the control panel 19, for example.

In more detail, the supporter 520 is installed at the rear side of the control panel 19. That is, the supporter 520 is installed in substantially parallel to the top frame 530, the drawer guide 510 for guiding and supporting the drawer 500 on the supporter 520 and the top frame 530 is It is preferable to be installed, and it is more preferable that the top guide 550 is provided at a part of the upper part of the drawer guide 510.

Here, the upper and one side (the front direction of the dryer) of the drawer guide 510 is open, the drawer 500 is drawn in and out through the opening.

On the other hand, in this embodiment it is preferable that the tank 400 for supplying water to the steam generator 200 is configured to be detachable.

Using the detachable tank 400 as in the present embodiment, the tank 400 is separated to supply water, and the tank 400 filled with water is supplied to the water supply flow path 220 of the steam generator 200. It is very convenient to connect.

In addition, the pump 600 is preferably provided between the tank 400 and the steam generator 200. The pump 600 may be rotated forward and backward, and more preferably, water may be supplied to the steam generator 200 and the residual water of the steam generator 200 may be recovered as necessary.

Therefore, in the present invention, the steam supply device, the steam generator 200 for generating steam, the pump 600 for pumping the water contained in the tank 400 to supply to the steam generator, the steam generated by the steam generator It can be said that comprises a nozzle 250 for supplying the inside of the drum.

Here, a water supply passage 220 through which water is supplied is provided between the tank 400 and the steam generator 200, and a steam passage 230 is provided between the steam generator 200 and the nozzle 250. In addition, the flow paths 220 and 230 may have a pipe shape.

In addition, in the above-described embodiment, a form in which steam is supplied into the drum has been described. However, the present invention is not necessarily limited thereto.

For example, in the above-described embodiment, the configuration of the steam generator 200 for steam generation may be omitted. In this case, it may be configured to supply fine moisture into the drum instead of steam.

That is, when the water contained in the water receiving portion 401 is pumped through the pump 600, water pressure is generated. Therefore, water having a water pressure may be converted into fine water while passing through the nozzle 250 and supplied into the drum. Here, the shape of the nozzle 250 for supplying fine moisture may be different from that of the above-described steam nozzle. Of course, the water pressure may be the water pressure of the external water supply. That is, when the external water supply and the dryer are connected, the configuration of the pump 600 may be omitted. This is also the case when the steam generator 200 is provided.

Here, the fine moisture is generated by spraying water at room temperature, so the temperature will not be high. And the particle size would correspond to tens of microns. Therefore, compared with steam, there is a fear that the specific part is not supplied evenly to the dry matter. In addition, there is a fear that the building will not penetrate deeply.

In order to solve such a concern, it is necessary to heat the fine moisture to a high temperature. That is, it is necessary to make this fine water as similar as possible to the above-described steam.

The dryer is provided with an air supply device for supplying hot or cold air into the drum as described above. Therefore, when the fine water is supplied into the drum, the air supply device is preferably controlled to supply hot air into the drum. This allows the fine moisture to be heated to form water vapor in part to reduce its particle size and at a high temperature so that the moisture can be evenly and deeply absorbed into the dry matter. In addition, the position of the nozzle to which the fine water is injected is preferably positioned so that the position of the opening 42 into which the hot air is introduced into the drum is closer to the synergy effect between the fine water and the hot air.

That is, the injection nozzle 250 for supplying fine moisture into the drum may be provided in the rear supporter 40, and may be provided in proximity to the opening 42.

Of course, the position of the nozzle may be in the hot air supply duct 44, so that the fine moisture may be heated in the hot air supply duct to be supplied into the drum through the opening 42 together with the hot air.

Referring to FIG. 8, a control panel 19 provided for an interface with a user will be described.

The control panel 19 includes a course selector 610, a power button 620, and a start button 621. The user may select a desired driving course from a plurality of courses through the course selector 610. In addition, the control panel 19 may include a display unit 700 displaying an operation time or a remaining operation time.

The course selector 610 includes a steam course 613, a steam capable course 611, and a steam exclusion course 612. Each of these courses may have a plurality of courses. Here, the steam course 613 is a course in which a course including a steam stroke to which steam is supplied to the drum when the steam course is selected is performed. The steam available course 611 is a course capable of the steam administration, and the steam exclusion course 612 is a course in which the steam stroke is excluded.

Therefore, when a desired course is selected through the course selector 610, the controller controls the operation of the dryer according to the selected course.

In addition, the control panel 19 may include an option selector 630 for selecting an option course including the steam stroke in addition to the driving course.

In addition, the control panel 19 includes various printing units 614. The printing unit may be a character printed on each of the buttons or a character printed around the course selection unit 610. The user can grasp the course or option to be input through the printing unit, and as described below, whether each course includes or enables steam stroke, whether the dryness is sensed for optimal drying or performing additional functions. Can be easily understood.

Hereinafter, the drying function and additional functions provided by the dryer according to the present invention will be described in detail through the control panel shown in FIG. 8.

The user may select the steam available course 611 through the course input unit 610. Here, the steam available course is a course in which the steam administration may be included, and the inclusion thereof may be selected by the user through the option selector 630.

For example, the steam available course 611 may be provided in various ways depending on the type of clothing with less risk of thermal damage, general drying course, course for drying cotton or towels, jeans that require a long time drying, etc. It can be made, including a course for.

Since the steam available course 611 is for drying clothes or the like without fear of heat damage, the drying stroke is supplied to the drum to dry the object and the cooling stroke to cool the object by supplying cold air to the drum. Here, the cooling stroke is to prevent the user from being injured by the high temperature because the inside of the drum or the object is a high temperature when the course is completed. However, if the drying proceeds at a low temperature hot air at the end of the drying stroke, this cooling stroke may be omitted.

On the other hand, when the steam available course 611 and the option course 630 is selected, the controller may control to perform the option course during the drying stroke or the cooling stroke. In addition, it is possible to control to perform the option course after the steam available course is completed.

For example, a description will be given of the case where the steam available course 613 is a general drying course (Nomal) and the option course 630 is a static removal course (632, Static Care).

8, the static elimination course is shown by STEAM. Therefore, the STEAM button may be an optional course other than the static elimination course.

If only the steam-capable course is selected, static electricity may be generated on the dried object after the course is completed, which may cause discomfort to the consumer. Thus, the electrostatic removal course can be selected to remove it.

It is necessary to supply steam to the object to remove the static electricity so that the object has a predetermined moisture content. Therefore, this steam stroke is preferably performed after the drying stroke. In addition, the steam stroke may be performed during the cooling stroke, or may be performed after the cooling stroke is completed. That is, the object dried through the drying stroke has a predetermined moisture content through the steam stroke during the cooling stroke or after the cooling stroke, thereby minimizing the discomfort of the user due to static electricity.

Here, the amount of steam supplied to the object for removing or reducing static electricity is preferably controlled. This is because too much steam can cause the object to be too moist and require redrying. Therefore, it is desirable to control the object to have a moisture content of less than 5% for removing static electricity.

The steamable course 611 will be described as the cotton / towel course (Cotton / Towel) and the optional course 630 is a wrinkle removal course (631, Wrinkle Care).

In this case, the steam stroke may be performed at the end of the drying stroke. In other words, the object is dried through a drying stroke and a steam stroke is supplied to the object evenly. After this, the drying process is continued to remove wrinkles. Of course, the drying stroke may end and the steam stroke may be performed. In this case, after the end of the steam stroke, the drying stroke may proceed again.

On the other hand, it is preferable that the drying stroke is performed after the steam stroke in the wrinkle removal course 631. This is because, in order to remove wrinkles, a larger amount of steam than the amount of steam for removing static electricity described above needs to be supplied to the object. Therefore, it is necessary to dry the object through the drying stroke after the steam stroke. In this case, the effect of removing wrinkles can be further increased through hot air.

Here, the option course 630 may be selected in duplicate. For example, the electrostatic removal course 632 and the wrinkle removal course 631 may be selectively selected or both may be selected together. In this case, the steam stroke may be performed a plurality of times. Of course, the timing at which the steam stroke is performed for each function will vary.

In addition, the option course 630 may be selected by pressing a button. That is, by pressing one button repeatedly, a specific option course may be selected or a button may be selected for each option course. Therefore, when the specific button is pressed, the option course may be progressed while the steam capable course is in progress, and when the other specific button is pressed, the option course may be progressed after the steam capable course is completed.

The steam available course 611 is preferably controlled so that the operating conditions of the drying stroke is variable according to the dryness detected during the drying stroke. This is called sensor dry for convenience. That is, to detect the dryness of the drying stroke is to obtain the optimal drying effect. This prevents overdrying or underdrying.

Although not shown, the dryness may be detected through a humidity sensor provided in the door. And the humidity sensor is an electrode sensor, it is possible to determine the dryness based on the voltage or current value generated by the object touches the electrode sensor. Determination of the degree of dryness through the electrode sensor is obvious to those skilled in the art, so a detailed description thereof will be omitted.

For example, when the estimated time of the initial drying administration is 50 minutes, as the drying process proceeds, if the drying progresses more than expected, the remaining drying administration time is reduced and vice versa. In addition, the capacity of the heater to generate hot air as well as the drying stroke time may be varied. Of course, the set temperature inside the drum for determining whether or not the hot air is supplied may also be varied.

On the other hand, the amount of the object, that is, the amount of quantity can be determined according to the dryness detected in the drying stroke. This course is to dry wet clothes after washing. Therefore, in case of large quantity, it takes a lot of drying stroke. That is, over time, if the quantity is large, the increase in dryness is small, and in the opposite case, the increase in dryness is large. Therefore, it is possible to determine the quantity using this.

However, the above-described sensing drying may be omitted here. That is, it may be operated under a preset driving condition at the beginning of driving. In this case, the detection of the amount of dryness due to the detection drying may not be performed, and the detection of the amount of water through the state variable of the induction motor described later may be performed. That is, it is possible to achieve optimal drying by detecting the quantity of gas through the state variable of the induction motor at the beginning of operation and presetting the operating conditions accordingly. Therefore, the sudden change in the remaining operation time during the operation is prevented.

In addition, the amount of detection may be detected through the state variable of the induction motor at the beginning of operation with the detection drying. That is, in the early stage of operation, the driving conditions may be set by operating the state variables, and the driving conditions may be changed by sensing drying during operation. In this case, since the operation condition is set through the state variable at the beginning of operation, the variation of the operation condition through the sensing drying will be minimized. Therefore, in this case, since the change of the remaining operation time during driving will be very small, confusion of the user due to this will be minimized.

The steam course 613 is a course including a drying stroke and the steam stroke to dry the object by supplying hot air to the drum. In other words, when the steam course 613 is selected, the drying process is automatically performed. The course is controlled as pre-programmed through the steam stroke, which provides optimum additional functions in addition to simple drying. Therefore, when the steam course 613 is selected, it is preferable that the option course cannot be selected. That is, the option selector 630 may be inactivated.

The steam course 613 may be provided with an easy ironing course (Easy Iron). The course may be a steam stroke so that the moisture content of the object is 5% to 6% after the drying stroke is completed. Therefore, the moisture is easy to iron in the garment after the course is completed.

In addition, the steam course 613 may be provided with a refresh course or a steam fresh course. The steam fresh course is characterized in that it is performed on a dry object. That is, it may be performed to easily remove the smell or dust of dry clothes. Therefore, the dry administration may be omitted at the beginning of the course. However, for removing the dust may include a stroke to supply the hot air or cold air to the drum. In addition, this course performs a steam stroke, hot steam is supplied to the object to smooth wrinkles and remove odors. In addition, you can expect a smoothing effect to save the clothes all. In this course, steam is preferably supplied to have a moisture content of 6% or more for odor removal and wrinkle removal. Therefore, after the steam stroke, it is preferable to include a drying stroke for drying. This is because the course can be aimed at treating dry clothing and allowing it to be worn immediately. However, since the drying operation is for drying a small amount of moisture, it is preferable to control the drying operation to be performed only for a short time.

As described above, the steam course is not intended to completely dry the object or to treat the dry object. Therefore, in the steam course, it is preferable that the drying administration proceeds according to a predetermined or preset program at the beginning of the operation. That is, it is preferable that the operating conditions of the predetermined drying stroke are controlled so as to be operated without being changed during the drying stroke. For example, since the steam fresh course is preferably performed for a short time, it is not preferable that the time required for the course vary. In addition, it is because sensing the dryness may be an unnecessary use of energy.

The steam exclusion course 612 is a course that does not include a steam stroke, the steam stroke can not be selected. That is, it is a course for drying clothing which is delicate and may be damaged by heat. Likewise, when such a steam exclusion course is selected, the controller preferably controls the option course including the steam stroke not to be selected.

As shown in FIG. 8, the control panel 19 of the dryer according to the present invention may include various types of printing units 614.

When the course selector 610 is provided in the form of a rotary knob, the user may select a desired course while rotating the rotary knob. As described above, the dryer according to the present invention has various courses depending on whether the steam stroke is included and whether the steam stroke is possible.

For example, a course in which a steam stroke may be included or possible may be provided on the left side of the course selector 610, and a course in which the steam stroke may be excluded may be provided on the right side. To make this easier for you, you can print the text Steam Dry to the left of the course selector. In addition, a character of steam dry is printed in a specific color, and corresponding courses may be displayed by printing an arc same as the specific color as shown in FIG. 5. Thus, when the user selects a course printed in the specific color or displayed with an arc, the user can easily identify that the course is steam available or at least available.

On the other hand, it is also desirable to clearly distinguish between the steam course and the steam available course. Therefore, for this purpose, the color of steamed course printed characters and steamed course printed characters may be different. For example, steamable courses can be printed in black and steamcourses can be printed in red. The letters Steam Dry can be printed in red and underlined in red. Therefore, the user can easily distinguish between the steam course and the steam available course through the above-described printing unit. In other words, the user can clearly see that a course printed in red arcs and black letters is a steam course and a course printed in red arcs and red letters is a steam course.

In addition, as described above, there may be sensing drying in which driving conditions are varied by sensing dryness during the course and non-sensing drying not sensing dryness. Therefore, the courses for performing the sensory drying may be printed in letters of the same color as the letters sensor dry as shown in FIG. 8. That is, the letter of the sense drying is printed in black, and the course of the detection drying is printed in black characters so that the user can easily grasp that the detection is dried when the course is printed in black characters.

Therefore, the user can select various types of driving courses through various types of printing units 614 provided to be visually distinguished from each other, and can clearly grasp the characteristics of each driving course. In addition, whether or not the option course 630 related to the steam administration may be selected through the printing unit 614 may be clearly understood. Therefore, the user can more easily use the dryer, and it is very easy to utilize various additional functions in addition to the drying function.

On the other hand, although not shown in Figure 8 may be provided with a button for the user to select the amount of the object. In addition, the user may be provided with a button to select the amount of steam supplied. Each of these buttons may be provided or only one of them may be provided. In the latter case, when the user selects that the amount of the object is large, the controller may correspondingly increase the amount of steam supplied from the steam stroke.

In addition, the option selector 630 may be provided with an LED 633. For example, each of the option course buttons 631 and 632 may be provided with such an LED. In this case, the LED may be turned on when the button is selected, or may be turned on when blinking and selected. On the contrary, it may be provided to flicker when lit or selected. Of course, if it is selected after the lighting it may be provided to blink. That is, these LEDs are preferably provided so that the state before the selection and after the selection are different from each other to visually display their states to the user.

Here, the option selection buttons 631 and 632 are buttons that can be selected when the steam capable course 611 is selected as described above. Therefore, when the steam available course is selected, it is desirable to display to the user that the LED is selectable while being lit or blinking. Of course, when the steam exclusion course is selected, it is preferable to display to the user that the selection is flickered.

9 to 10 will be described in detail how the steam stroke is performed in the dryer according to the present invention.

For convenience of description, a normal drying course (Nomal) is selected among the steamable courses (611), and an static elimination course (Static Care) course is selected as an option course (630).

First, as shown in FIGS. 9 to 10, a general drying course includes a drying stroke and a cooling stroke. That is, the object is dried through a drying stroke, and the object is cooled through a cooling stroke. The difference between the flow charts shown in FIG. 9 and FIG. 10 depends on the difference in quantity, for example when FIG. 9 is 1 kg and FIG. 10 is 3 kg. However, FIGS. 9 and 10 are not only related to specific doses, but are examples for showing the change according to the increase of the dose.

Here, the general drying course may perform the sensing drying as described above. In other words, as the drying process proceeds for optimal drying, the drying time can be detected to vary the operating time required for the drying process. For example, when the operation initial drying administration time is set to 50 minutes, it may be changed to 40 minutes as shown in FIG. 6 and 60 minutes as shown in FIG. This means that the controller determines whether or not more drying time is needed based on the sensed dryness.

Here, the degree of dryness will vary depending on the dose. For example, in case of large amount of drying, a longer drying time is required than the initial setting time, and in the opposite case, a short drying time is required. Therefore, it will be possible to determine the dosage through the detection of this dryness. Of course, the optimal drying is achieved when the drying administration is completed through such sensing drying.

However, the sensing drying can be modified as follows. That is, the operation initial drying stroke time is not set to 50 minutes unconditionally, for example, and may be set differently according to the detected quantity through the state variable of the induction motor as described below. That is, when the amount is large, it may be preset to 60 minutes, and when the amount is small, it may be preset to 40 minutes. Therefore, even in this case, it does not detect the dryness of the drying stroke, but it can be referred to as detection drying in the sense of setting the operating conditions differently by detecting the initial operation amount of the initial operation. Of course, as described above, the operating conditions may be set differently according to the state variables of the initial driving motor, and the driving conditions may be corrected or corrected according to the dryness detected during the driving.

On the other hand, the static elimination course is intended to ensure that the user does not feel uncomfortable due to static electricity when the user takes out the object after completion of drying. Therefore, it is preferable to supply predetermined moisture to the object after the drying process. Here, since the drying operation is carried out by the sense drying, the object will be in a state of completion of drying regardless of the amount of water.

Here, the amount of steam for removing static electricity is preferably to vary depending on the amount of steam. That is, it is desirable to supply a small amount of steam to a small amount and a large amount of steam to a large amount. In other words, it is desirable to supply steam to the object so as to have a moisture content of 5% or less, or less, regardless of the amount. If the moisture content is high, the static electricity can be removed, but the object may be damp. Here, the steam for removing static electricity does not have to be directly supplied to the object. In other words, if the atmosphere inside the drum has a certain degree of humidity, the effect of removing static electricity can be obtained sufficiently.

In the general drying course, a cooling stroke is performed after the drying stroke. Such a cooling stroke may be performed for a predetermined time regardless of the amount of water, and may be increased according to the amount of water. However, when the cooling stroke is mainly for cooling rather than drying the object, it is preferable that the cooling stroke is performed only for a predetermined time regardless of the quantity. For example, the cooling stroke can be performed for 5 minutes regardless of the quantity of water, which is shown in FIGS. 9 to 10.

The steam stroke for removing the static electricity is preferably performed in the cooling stroke. Thus, it is possible to eliminate or minimize the increase in overall operating time due to the addition of a steam stroke. That is, when the cooling stroke is performed for 5 minutes, if the steam stroke is terminated before the end of the cooling stroke, there is no increase in operating time due to the steam stroke.

Therefore, it is preferable that the operation time of the heater 240 generating steam to eliminate the increase in operating time due to the steam stroke and effectively remove the static electricity depends on the amount of the object.

As shown in FIG. 9, when the sensing amount is 1 kg, the heater 240 may be controlled to operate at the same time as the cooling stroke is started. Here, after a predetermined time after the heater is operated, steam is supplied to the drum. This is because a predetermined time is required depending on the amount of water to be heated and the capacity of the heater until the steam is generated by heating the water. Of course, the above-described steam heating in the form of tube heating will require such a predetermined time, but the time required will be smaller than the steam heating in the form of tub heating.

9 shows that the steam stroke starts about 1.5 minutes after the heater starts to operate. Therefore, in this case, the steam stroke is performed for about 3 minutes or 3.5 minutes. Of course, the steam stroke here is performed within the cooling stroke set to 5 minutes, so there is no increase in operating time due to the steam stroke.

As shown in FIG. 10, when it is detected that the quantity is 3 kg, the heater 240 may be controlled to operate 1 minute before the end of the drying stroke. In addition, it is preferable that the capacity of the heater generating hot air in the drying stroke in which the heater is operated is controlled to be small. This is because the instantaneous power consumption of the entire dryer is preferably below the set value.

On the other hand, since the steam stroke is performed after 1.5 minutes after the heater 240 is operated as described above, the steam stroke is performed in the cooling stroke. In this case as well, the operating time due to the steam stroke does not increase. In addition, in this case, since the steam stroke takes about 0.5 minutes after the cooling stroke starts, the steam stroke is performed for about 4 to 4.5 minutes. Therefore, the steam stroke takes longer time than the case of 1 kg of the carrying amount. That is, the operating time of the heater 240 is long, and thus the amount of steam supplied to the drum is also increased.

Therefore, in the dryer according to the present invention, in consideration of the time from the start of the heater 240 to the start of the steam stroke (for example, 1.5 minutes), the operating time of the heater is controlled to vary depending on the quantity of water. This is preferred. In addition, it is preferable that the operation time of the heater is varied within a section between the end of the drying stroke and the initial cooling stroke. Here, it is preferable that the steam stroke is performed in the cooling stroke, but may be performed in a drying stroke to some extent, and only a part of the steam stroke may be performed for some time before the cooling stroke after the drying stroke. . Therefore, it is possible to eliminate or minimize the increase in operating time due to the steam stroke by controlling the operating timing of such a heater.

On the other hand, although not shown, the operating time of the heater may be 1.5 minutes before the end of the drying stroke, in this case, the steam stroke may be performed in the entire cooling stroke of 5 minutes. Here, performing a steam stroke for 5 minutes may be the most effective for removing static electricity at the maximum load. Therefore, the optimum amount of steam or the required time of the steam stroke may be determined experimentally in consideration of the capacity or amount of the steam generator.

As shown in Figures 9 to 10, when the amount is 1 kg the motor is not driven during the cooling stroke, when the amount is 3 kg the motor is driven. Here, the motor drives the drum and the fan for supplying air into the drum at the same time. Therefore, when the motor is driven, the drum is driven and air (cold wind because of the cooling stroke) is introduced into the drum.

Here, the reason for selectively driving the motor in accordance with the quantity is for the following reason. If the quantity is small When the motor is driven, the amount of steam supplied to the drum is small, so it can be discharged from the drum without affecting the object or the atmosphere inside the drum. In this case, therefore, it is preferable that the motor is not driven. On the contrary, in the case of a large quantity, since the amount of steam supplied to the drum is large, it is possible to supply steam effectively to the object even if it is discharged from the drum.

Therefore, it is preferable that the motor is not driven in the cooling stroke at the dose when the dose is determined to be a small or large size. Of course, in this case it will be more preferable that the motor is not driven only during the time of the steam stroke of the cooling stroke.

In addition, when the quantity is further subdivided, it is possible to control the motor not to be driven below the specific quantity, and the specific quantity of the boundary may be determined experimentally.

However, unlike the foregoing, when the motor for driving the drum and the motor for supplying air are distinguished from each other, in any case, the drum may be driven and only the motor for supplying air may be selectively driven.

Meanwhile, as shown in FIGS. 9 to 10, when the selected course or the optional course includes a drying stroke and a steam stroke, it is preferable to preheat the heater 240 at the beginning of the drying stroke. This is likewise to prevent an increase in operating time due to the steam stroke. In addition, the preheating may be for heating water at a temperature at which steam is not generated, for example, about 80 degrees Celsius. In this case, due to the initial water temperature it can minimize the time deviation from the start of the steam stroke after the heater operation. In other words, it is possible to control the exact amount of steam.

The preheating is also effective for steam generators in the form of tube heating. That is, because it is possible to prevent the supply of heated water, not steam, to the drum at the beginning of the steam stroke through preheating.

The pump 600 shown in FIGS. 9 to 10 is a pump for supplying water to the steam generator, and the clockwise driving means supplying water and the counterclockwise driving means recovering residual water.

Meanwhile, in the above-described embodiment, the operation time of the heater 240 is changed according to the quantity of dryness detected. However, such a dose may be a dose input by a user, or may be a dose sensed by some other method. In addition, the range in which the amount of steam according to the quantity of water or the range in which the heater 240 is operated may be larger or smaller than the above-described example. This will depend on the desired add-on using steam.

Hereinafter, with reference to Figure 11 will be described in detail with respect to the quantity detection unit and the amount of detection method through the dryer in accordance with the present invention. As described above, the present embodiment may be used selectively or in parallel with the quantity detection through the dryness detection. Therefore, in either case, the driving time is prevented from being changed during driving or minimized to prevent user confusion.

Power for driving the drum 130 in the dryer according to the invention is generated by the induction motor 70. The induction motor 70 is accelerated when the power is applied to reach the normal RPM to operate at the normal RPM. At this time, when the power is cut off, the motor decelerates and stops. Therefore, the induction motor 70 takes a certain time until reaching a normal RPM in its characteristics, and likewise takes a certain time until stopped. Of course, the normal RPM here may be variously changed as necessary.

Section (1) shown in FIG. 11 represents an acceleration section, section (2) represents a normal driving period, and section (3) represents a deceleration section.

First, an embodiment of a dose detection method will be described.

As shown in FIG. 11, the time required for the acceleration section and the time taken for the deceleration section vary depending on the amount of storage accommodated in the drum. That is, a large amount means that the resistance to rotation of the drum is that much, whereas a small amount means that the resistance to rotation of the drum is so small. Therefore, in the acceleration section, more time is required until the normal RPM is reached, and in the deceleration section, the more time is required, the less time is required to stop.

Therefore, it is possible to detect the amount of air contained in the drum through the time required for the induction motor to reach the normal RPM from the time when power is applied to the induction motor 70. Of course, it will also be possible to detect the amount of capacity contained in the drum through the time required to stop the induction motor from the time when the power is cut off to the induction motor 70 to operate at a normal RPM.

Here, the time required to vary according to the increase in the amount of dose may be obtained experimentally, and the correlation between the amount of time and the amount of time may be prepared in a table and preset in the amount detecting unit. Of course, such a quantity detection unit may be provided in the microcomputer included in the controller, it may be provided separately from the controller or the microcomputer.

Therefore, in the above-described embodiment, the state variable of the induction motor, which varies according to the amount of capacity contained in the drum, means a time required to reach a normal operating RPM or a time required to stop at a normal operating RPM.

Next, another embodiment of the dose detection method will be described.

The above-described embodiment should detect the time when the power is applied or cut off to the motor and the time when the induction motor reaches the normal RPM or stops. That is, the time required through the time between these points can be detected.

However, in the present embodiment, it is possible to detect the amount of fire through the acceleration in the acceleration section (1) or the deceleration section (3). That is, by detecting only a specific value in a specific section can be detected a quantity. Here, the state variable of the induction motor for detecting the amount of capacity may be referred to as acceleration.

The acceleration section or the deceleration section may be linear as shown in FIG. 11. In this case, the acceleration detected at any point will be the same. Of course, the smaller the amount of acceleration in the acceleration section, the greater the acceleration, and the smaller the quantity, the smaller the acceleration. Therefore, it is possible to detect the quantity through this. In addition, when the acceleration or deceleration section is made linear, it will be possible to further subdivide the amount of the dose. In addition, if the acceleration or deceleration section is not made linearly, it may be possible to subdivide the quantity of the large or small. This is because the acceleration at least at a certain time depends on the volume.

Next, another embodiment of the dose detection method will be described.

This embodiment is similar to the embodiment described above. In other words, it is very similar in terms of using the state variable of the induction motor that varies depending on the amount of capacity in the acceleration section or the deceleration section. However, the present embodiment is different from the detection of RPM at a specific time as the state variable.

In other words, when the amount is small in the acceleration section, the RPM at a specific time is large and when the amount is large, the RPM at a specific time is small. This is because, for small doses, the RPM at a given time will be closer to the normal RPM than for large doses. Of course, the opposite will happen in the deceleration section.

On the other hand, as described above, the time required for the acceleration section or the deceleration section varies depending on the quantity. Therefore, the time of detecting the acceleration or the time of detecting the RPM in this section may be affected. Of course, considering that the time required for the acceleration or deceleration section at no load is the shortest, this effect can be minimized by sensing the acceleration or RPM before the time required.

However, as described above, the acceleration section and the deceleration section may not appear linearly, and the deviation between the acceleration section and the deceleration section may be caused by a variable other than the amount of the gun, such as the state in which the gun is accommodated in the drum, that is, the eccentric state. .

Therefore, the measurement of time, acceleration or RPM measurement for the detection of the quantity can be performed repeatedly a plurality of times. Here, it is possible to detect the dose based on the result repeated a plurality of times. In other words, it is possible to prevent the incorrect amount of detection due to variables other than the amount of quantity.

In addition, the specific time for detecting the acceleration or RPM in the acceleration section or the deceleration section may also vary as the amount of detection is repeated. That is, it is possible to detect whether there is no load through the initial detection of the quantity. In addition, by repeating the detection of the amount of capacity can be detected whether or not the small and small amount. And finally, it will be possible to detect more granular doses.

The above description is given by taking an example. Assuming that the acceleration section is 2 seconds at no load, 4 seconds at medium load and 6 seconds at full load, RPM can be measured at the point of 2 seconds in the initial dose detection phase. As a result, when the RPM is close to or equal to the normal RPM can be determined at least no load. In addition, when the deviation from the normal RPM can be determined that there is a load.

Next, the RPM can be measured at 4 seconds. This measured RPM will be able to detect at least medium-large quantities. In this case, if it is determined that the bulk amount is equal to or more than half, the RPM may be measured again at the time point of 5 seconds. And through these results, it is possible to detect more granular volume.

Another embodiment of a dose detection method is described. As described above, when the power is applied, the induction motor does not reach the normal RPM and has an acceleration period for a certain time. In addition, when the amount increases, a lot of resistance is generated that prevents the motor from rotating, thereby increasing the current value when reaching the normal RPM in the acceleration section. Therefore, it is possible to detect a quantity by measuring the input current during the initial driving of the induction motor.

In this embodiment, a separate sensor for measuring RPM is not required. And, there is an advantage that can be easily implemented in a circuit. For example, the current value that varies according to the dose can be measured by sensing a voltage value that changes while passing through a specific resistor in the dose detector. That is, when the current value is 0, the dose detection unit may detect 5V by default, and as the current value is increased, the dose detection unit may detect a low voltage value.

Meanwhile, the present embodiment may be modified as follows. That is, the induction motor has a deceleration section when the power is cut as described above. This is because it does not stop immediately by the back electromotive force remaining in the motor when the power is cut off.

However, this counter electromotive force is dependent on the amount of the dose. That is, in the deceleration section as described above, the stopping time is shorter as the amount of water increases, because the decrease rate of the counter electromotive force becomes larger as the amount of water increases. Therefore, it is possible to detect the amount of capacity by detecting the counter electromotive force in the deceleration section. In addition, since the counter electromotive force will have an AC waveform having the same frequency irrespective of the dose, it is possible to detect the dose by measuring the counter electromotive force at a specific time.

On the other hand, as described above, the detection of the amount of capacity through the state variable of the induction motor is preferably performed at the beginning of operation. In addition, the detection of such a quantity may be performed a plurality of times for more accurate detection. Then, the operating conditions are set differently according to the detected quantity.

Therefore, according to the present invention, since the driving time is set and displayed on the display unit 700 through the detection of the correct initial amount of driving, the remaining driving time is suddenly changed or does not change during driving, thereby preventing the user from confusion. In addition, more efficient drying is possible by varying the operating conditions by detecting the dryness during operation. In addition, since the operation conditions, in particular, the operation time is already set according to the amount of capacity at the beginning of the operation, the variation of the operation time through the dryness detection during the operation may be minimized.

1 is a block diagram schematically showing the structure of a dryer;

2 is a flow chart showing a drying time control method of a conventional dryer;

3 is a graph showing the characteristics of the drying object when drying;

4 is an exploded perspective view of a dryer according to the present invention;

5 is a cross-sectional view of a dryer according to the present invention;

6 is a steam generator used in the dryer of FIG.

7 is another embodiment of a dryer according to the invention;

8 is a control panel of the dryer of FIG.

9 is a flow chart of operation at low dose;

10 is a flow chart of operation at high doses;

11 is a graph schematically showing that the state variable of the induction motor is changed according to the amount of capacity.

* Description of the main parts of the drawing *

610: course selector 620: power button

611: Possible steam course 612: Steam exclusion course

613: steam course 614: printing

621: start button 630: option selection unit

631: static electricity removal button 632: wrinkle removal button

Claims (21)

A drum in which a dry item is accommodated; An induction motor for driving the drum; An air supply device for supplying air into the drum for drying the dried object; A quantity detection unit for detecting a quantity of water through a state variable of the induction motor, which is changed according to the amount of the dry matter contained in the drum; And And a controller configured to control an operation of the induction motor and the air supply device by setting an operation time according to the detected quantity. The method of claim 1, And the quantity detecting unit is configured in the controller. The method of claim 1, And a display unit configured to display the operation time and display the remaining operation time as the operation proceeds. The method of claim 1, The variable is a dryer, characterized in that at least one of the acceleration in the acceleration section or the acceleration section of the induction motor. The method of claim 1, Wherein the variable is at least one of the RPM of the acceleration section of the induction motor at a specific time or RPM at a specific time of the deceleration section. The method of claim 1, The variable is a dryer, characterized in that the current value when reaching the normal RPM in the acceleration section of the induction motor. The method of claim 1, And the variable is a counter electromotive force value at a specific time of the deceleration section of the induction motor. The method of claim 1, Dryer comprising a water supply device for supplying fine moisture or steam into the drum. The method of claim 8, Dryer, characterized in that the amount of fine water or steam supplied into the drum depends on the detected quantity. The method of claim 1, The operation time is a dryer comprising a drying time for supplying hot air into the drum and a cooling time for supplying cold air into the drum. The method of claim 10, And the cooling time is preset and the drying time is set differently according to the detected quantity, and the operation time is set differently according to the detected quantity. The method of claim 11, And when the drying ends before the set drying time elapses, the remaining time is changed to the preset cooling time and displayed. In the control method of the dryer comprising an induction motor for driving a drum that is to be dried, A quantity detection step of detecting a quantity of water through a state variable of the induction motor, which is varied according to the amount of the dry matter contained in the drum; And And a display step of displaying the remaining operation time as the operation time elapses by setting the operation time differently according to the detected quantity. The method of claim 13, The quantity detection step, Accelerating or decelerating the induction motor; And The control method of the dryer comprising the step of measuring the acceleration in the step. The method of claim 13, The quantity detection step, Accelerating or decelerating the induction motor; And Drying control method comprising the step of measuring the RPM at a specific time of the step. The method of claim 13, The quantity detection step, Accelerating the induction motor; And And controlling the input current value of the induction motor when reaching the normal RPM in the step. The method of claim 13, The quantity detection step, Decelerating the induction motor; And And controlling the counter electromotive force value of the induction motor in the step. The method of claim 13, The quantity detection step is a control method of the dryer, characterized in that performed a plurality of times. The method of claim 13, And a water supply step of supplying fine water or steam into the drum. The method of claim 19, The control method of the dryer, characterized in that the amount of fine water or steam supplied in the water supply step depends on the amount of water detected in the quantity detection step. In the control method of the dryer comprising an induction motor for driving a drum that is to be dried, A quantity detection step of detecting a quantity of gas through a state variable of the induction motor which is varied according to the quantity of the dry matter contained in the drum at the beginning of operation, and sensing the quantity of dryness during operation; And Control operation of the dryer comprising a display step by setting the operation time according to the detected amount of initial initial operation and displaying the remaining operation time as the operation time elapses, and modifying the remaining operation time according to the detected quantity during operation. Way.

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