KR20180123351A - Device for treating laundry and Method for controlling the same - Google Patents

Abstract

A method for controlling laundries according to the present invention includes: a temperature condition determination step of determining whether a preset temperature condition is satisfied based on a temperature value detected by a temperature sensor within a predetermined time interval, during a drying process; and a latter step where the starting point varies depending on whether or not the temperature condition is satisfied. The drying efficiency of a device for treating laundries can be improved by the method of the present invention.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a laundry processing apparatus,

The present invention relates to a laundry processing apparatus having a drying function and a control method thereof.

A laundry processing apparatus capable of drying laundry (hereinafter referred to as "pouring") supplies dry air to dry a wet pour. The laundry processing apparatus includes a drum in which an air passage and a bag are accommodated. The laundry processing apparatus includes a heater for dehumidifying and heating the air guided along the air flow path, and a fan disposed on the air flow path for applying air to flow the air.

In order to supply a suitable hot air of a cloth, a technique using a heater in which a calorific value (power) is changeably provided at two or more different levels is known. A technique for drying the pellets for a predetermined time according to the pellet to dry the pellets is known.

According to the technique of the prior art that the drying cycle of the cloth progresses according to the predetermined time, the variation of the final water content (FMC) of the cloth occurs at every execution of the drying cycle, There is a problem that the probability of not being sufficiently dried becomes large. A first object of the present invention is to solve such a problem and increase the uniformity of final water content (FMC) of the foam.

In the prior art, there is a problem that the drying efficiency (for example, the amount of water evaporated in the bag compared to the power consumption of the laundry processing apparatus) is lowered by driving the heater and the fan more than necessary even if the drying has already been sufficiently performed. A second object of the present invention is to solve such a problem and improve the drying efficiency of the laundry processing apparatus.

In the prior art, there is a tendency that variations in peripheral conditions (for example, variations in the voltage applied to the laundry processing apparatus, variations in the ambient humidity of the laundry processing apparatus, and the amount of foreign matter on the air flow path) And the like), there is a problem that the final water content ratio (FMC) of the foam becomes uneven. A third object of the present invention is to solve such a problem.

The apparatus for treating laundry according to the present invention comprises a drum for containing a cloth, an air flow path for introducing air into the drum and discharging air from the drum, a fan arranged on the air flow path, A heater for heating the air, and a temperature sensor for sensing the temperature of the air or the air.

According to an aspect of the present invention, there is provided a control method for a laundry processing apparatus, the method comprising the steps of: determining a predetermined temperature condition based on a temperature value sensed by the temperature sensor within a predetermined time period Determining whether the temperature condition is satisfied or not; and a second step of varying a starting point according to whether the temperature condition is satisfied.

The starting point of the later stage when the temperature condition is satisfied can be set earlier than the starting point of the latter stage when the temperature condition is unsatisfactory.

When the temperature condition is satisfied, the start time of the later step may be set earlier as the time point at which the temperature condition is satisfied is earlier.

And the later stage may be started when the temperature condition is satisfied.

The total progress time of the later stage may be set regardless of whether the temperature condition is satisfied or not.

The later step may include a termination cooling step of cooling the can before the end of the drying stroke.

Further comprising the step of determining whether or not a predetermined additional condition is satisfied, wherein in the latter step, if the additional condition is satisfied, a final cooling step of cooling the foam before the end of the drying cycle is performed, and if the additional condition is unsatisfactory An additional drying step may be carried out.

The laundry processing apparatus may further include a humidity sensor for sensing the humidity of the bag or the air. The additional condition may include a predetermined drying condition, which is estimated based on the value detected by the humidity sensor, to be less than a predetermined reference humidity.

Whether or not the drying condition is satisfied can be determined based on the value sensed by the humidity sensor at the previous time point ta of the starting time point (to) of the predetermined time interval.

And an initial drying step of controlling the operation of the heater and the fan according to a predetermined time from a start time point of the drying stroke until a start time point of the predetermined time interval.

The predetermined time interval may be set as a period between a predetermined start time point larger than 0 and a predetermined end point time point larger than the start time point.

In the temperature condition determination step, it is possible to continuously determine whether the temperature condition is satisfied until the temperature condition is satisfied within the predetermined time period.

Wherein the temperature condition determination step ends when the temperature condition is satisfied within the predetermined time period when the temperature condition is satisfied and ends when the temperature condition is unsatisfactory within the predetermined time period, .

In the temperature condition determination step, the fan and the heater can be continuously operated until the temperature condition determination step is finished.

The predetermined time interval is divided into first to n-th time intervals in chronological order, and first to n-th reference temperature values corresponding to the first to n-small time intervals may be previously set. The temperature condition is satisfied if the temperature value detected in the small time period to which the current time point belongs in the first to n small time periods corresponds to the small time period in which the current time point belongs to the first to n reference temperature values And the reference temperature value. (Where n is a natural number of 2 or more).

The temperature condition may include a condition that a temperature value sensed by the temperature sensor is equal to or higher than a predetermined reference temperature value.

The predetermined time interval is divided into first to n-th time intervals in chronological order, and first to n-th reference temperature values corresponding to the first to n-small time intervals may be previously set. The temperature condition may be an m-1 temperature condition in which the temperature sensed in the (m-1) th small time interval is not less than the (m-1) reference temperature value, M < / RTI > temperature condition above the temperature value. (Where n is a natural number of 2 or more, and m is an arbitrary natural number of 2 or more and n or less).

Among the first to n reference temperature values, the (m-1) reference temperature value may be set to be larger than the m-th reference temperature value.

If the m-1 temperature condition is satisfied, it is determined that the temperature condition is satisfied. If the (m-1) temperature condition is not satisfied, it may be determined whether the m th temperature condition is satisfied.

According to an aspect of the present invention, there is provided a laundry processing apparatus comprising: a drum for containing a cloth; an air flow path for introducing air into the drum and discharging air from the drum; A heater for heating the air introduced into the drum, and a temperature sensor for sensing the temperature of the air or the air. The laundry processing apparatus determines whether or not a predetermined temperature condition is satisfied based on a temperature value sensed by the temperature sensor within a predetermined time period after the start of the drying cycle, And a control unit for controlling the starting point of the step of the step.

As the water content of the blanket becomes smaller in the drying cycle, the temperature rise rate of air passing through the blanket or blanket due to the heating of the heater becomes larger. By controlling the drying stroke based on the sensed temperature, the final water content (FMC) There is an effect that can be. This reduces the probability of swelling and drying, and reduces the probability that the swatch is not dry enough.

Further, by preventing the power consumption more than necessary in the drying cycle, the drying efficiency can be increased.

Further, it is possible to increase the reliability and accuracy of the control method by controlling the drying stroke on the basis of more objective sensed values, based not only on the sensed mass flow rate or sensed moisture content detection information of the can.

Also, the level of drying of the fabric may be varied even if the drying process is carried out for the same time due to the variation of the flow path resistance of the air flow path, the deviation of the supplied voltage, and the humidity fluctuation around the laundry processing apparatus. Uniformity of the dryness of the fabric can be achieved even if the deviations of the respective environments occur through the control depending on whether and / or when the satisfaction is achieved.

Further, by dividing the time interval into small time intervals or by providing a plurality of temperature conditions, more precise control is possible.

In addition, by setting the reference temperature value corresponding to the small-time interval on the time side to be relatively small in time, it is possible to reflect the phenomenon that sufficient drying can be performed even if the reference temperature value reaches a lower reference temperature value in the latter half of time.

Further, by providing the additional conditions, the reliability of the control method according to the temperature condition can be improved more.

1 is a perspective view of a laundry processing apparatus 100 according to an embodiment of the present invention.
2 is an exploded perspective view of the internal structure of the laundry processing apparatus 100 of FIG.
Fig. 3 is a perspective view of the inside of the laundry processing apparatus 100 of Fig. 1, with the side cover 12 on one side thereof being removed.
4 is a schematic cross-sectional view of a laundry processing apparatus 100 'according to another embodiment of the present invention.
Fig. 5 is a control block diagram of the laundry processing apparatuses 100 and 100 'of Figs. 1 and 4. Fig.
6 is a flowchart showing a control method according to an embodiment of the laundry processing apparatus.
7 is a flowchart showing a control method according to another embodiment of the laundry processing apparatus.
FIG. 8 is a flowchart showing a control method according to the first embodiment in which the control method of FIG. 6 is more specific.
Fig. 9 is a flowchart showing a control method according to the second embodiment in which the control method of Fig. 6 is more specific.
10 is a flowchart showing a control method according to the third embodiment in which the control method of Fig. 7 is more specific.
FIG. 11 is a graph showing the power consumption P of the laundry processing apparatus which varies according to the time t in the progress of the drying process, wherein the satisfaction of the temperature condition and the temperature condition are satisfied at a predetermined time interval Ts (1), (2), (3) and (4)) in which the control of the drying cycle varies depending on the time point.
Fig. 12 is a flowchart showing the control process of the drying cycle shown in Fig. 11 and the respective scenarios (1, 2, 3, and 4).
Figs. 13 to 15 are diagrams showing the dispersion of the respective final moisture contents (FMC) according to experimental results when the drying cycle is controlled according to the conventional comparative example (O) and the present invention example (Q) . The horizontal line shown in the middle of the bar graph indicates the 'middle value', and the circular point shown in the middle of the bar graph indicates the 'average value'.
Fig. 13 shows the overall experimental results of the conventional comparative example (O) and the embodiment (Q) of the present invention.
Fig. 14 shows an experimental result according to the state (Nor, Abn) of the air flow path.
FIG. 15 shows experimental results according to the applied voltage (237.6 V, 242.4 V) of the laundry processing apparatus.

The expression referring to the directions such as " Fo / Re / Le / Right / Up / Dw " It is to be understood that the present invention is not limited to the above embodiments but may be modified in various ways depending on where the reference is placed.

'Upstream' and 'Downstream' referred to below refer to the direction of airflow in the air flow path.

In the linguistic / mathematical comparison of the entire description throughout this description, the terms "less than or equal to (less than)" and "less than (less than)" are readily replaceable from the standpoint of a typical technician, Of the present invention can be easily replaced with each other in the conventional art from the viewpoint of a skilled artisan, and it is a matter of course that there is no problem in exerting the effect even when the present invention is substituted.

The present invention may be a control method of a laundry processing apparatus, and may be a laundry processing apparatus including a control unit 30 for performing the control method and controlling the hardware. The laundry processing apparatus according to the present invention may be a washing machine or a dryer having a drying function. 1 to 3 show a dryer 100 according to an embodiment, and FIG. 4 shows a washing machine 100 'having a drying function according to another embodiment.

The control method according to the present invention can be implemented by a computer program. In this case, combinations of steps and flowchart illustrations in the flowchart illustrations may be performed by computer program instructions. The instructions may be loaded into a computer (microcomputer) provided in the control unit 30, and the instructions may generate means for performing the functions described in the flowchart (s). The instructions may be stored in a computer usable or readable recording medium (memory) to implement a function in a particular manner.

The control method or steps may represent a portion of a module, segment, or code that includes one or more executable instructions for executing the specified logical function (s). It is also possible in some alternative embodiments that the functions mentioned in the steps occur out of order. For example, the two steps shown in succession may in fact be performed substantially concurrently, or the steps may sometimes be performed in reverse order according to the corresponding function.

Referring to FIGS. 1 to 3, a laundry processing apparatus 100 according to an embodiment of the present invention will now be described.

The laundry processing apparatus 100 includes a casing 10 that forms an appearance. The casing 10 provides an interior space in which the drum 23 and other arrangements are disposed. The casing (10) includes a front cover (11) forming a front face, a side cover (12) forming both side faces, and a back cover (13) forming a rear face. The casing (10) forms a bottom surface and includes a base (15) for supporting the laundry processing apparatus (100). The casing (10) includes a top cover (14) forming an upper side. The casing (10) forms a charging port (11a). Through the inlet port 11a, the carriage can be pulled into the drum 23 or the pail in the drum 23 can be pulled out to the outside.

The base 15 is made of a horizontal plate. And cabinets 12 and 13 integrally formed on the base 15 are installed. The cabinets 12 and 13 are formed in a " C "shape having an open front face, and include a side cover 12 and a back cover 13. The top cover 14 is disposed above the cabinets 12, 13.

The laundry processing apparatus 100 forms a charging port 11a through which the laundry can be drawn into and discharged from the drum 23. The inlet 11a is formed in the front cover 11.

The laundry processing apparatus 100 includes a door 18 that opens and closes the inlet 11a. The door 18 includes a door frame 18a rotatably coupled to the front cover 11 and a door glass 18b installed on the door frame 18a. The door frame 18a has a hole at the center thereof and a door glass 18b is installed in the hole of the door frame 18a. The door glass 18b is made of a transparent member so that the inside of the drum 23 can be seen. The door glass 18b is convex inward of the drum 23.

The laundry processing apparatus 100 includes a control panel 16 disposed at an upper portion of the front cover 11. The control panel 16 includes an output unit 36 for outputting various information such as the operating state of the laundry processing apparatus 100. The output unit 36 may include a speaker (not shown) for outputting information by voice. The output unit 36 may include a display panel for visually outputting information. The control panel 16 includes an input unit 35 for receiving an operation command of the laundry processing apparatus 100 from a user. The input unit 35 may include a button, a dial, a touch screen, or the like.

The laundry processing apparatus 100 includes a drum 23 that receives a blanket. The drum 23 is disposed inside the casing 10. The drum 23 is rotatably disposed. The drum 23 may be rotatable about a horizontal rotation axis. The drum 23 forms a receiving space for receiving the bobbin. The drum 23 is cylindrical in which the front and rear surfaces are opened, and the front surface is connected to the inlet 11a.

On the inner circumferential surface of the drum 23, a lifter 23a for lifting clothes is provided. The lifter 23a protrudes from the inner peripheral surface of the drum 23. The lifter 23a is elongated in the longitudinal direction. The plurality of lifters 23a can be arranged at a certain angle with respect to the rotational axis of the drum 23. [ While the drum 23 is being rotated, the clothes are lifted by the lifter 23a and fall can be repeated.

The laundry processing apparatus 100 includes a front supporter 27 and a rear supporter 28 for rotatably supporting the drum 23. The front supporter 27 and the rear supporter 28 are disposed in the casing 10. [ The front supporter 27 supports the front end of the drum 23. The rear supporter 28 supports the rear end of the drum 23. The front supporter 27 and the rear supporter 28 are formed with a guide made of a ring-shaped projection or groove or the like. By engaging the front end and the rear end of the drum 23 with the guide, the drum 23 can be stably rotated.

The front supporter 27 and the rear supporter 28 are provided with rollers 24 for supporting the drum 23, respectively. The outer peripheral surface of the drum 23 is brought into contact with the roller 24.

The laundry processing apparatus (100) includes a motor (M). The motor M rotates the drum 23. The motor M rotates the fan 51. 2, the motor M is a two-axis motor M that performs a function of rotating the drum 23 and a function of rotating the fan 51. [ Referring to FIG. 4, the laundry processing apparatus 100 'according to another embodiment includes a drum motor M1 for rotating the drum 23 and a fan motor M2 for rotating the fan. The motor M referred to in the present invention may be provided in any case. The motor M may be a BLDC motor.

The laundry processing apparatus 100 includes a motor support member 22 for supporting a motor M. [ The motor support member 22 is fixed on the base 15. The motor support member 22 is supported by the motor support member 22. The motor M provides power for rotating the drum 23. The motor M can rotate the fan 51. [ The two-shaft motor M includes a fan motor shaft 51s coupled with the fan 51 and a drum motor shaft 23s having a drive pulley to which the belt 29 wound around the drum 23 is engaged.

An idle pulley (26) for adjusting the tension of the belt (29) is installed on the motor support member (22). The belt 29 surrounds the outer peripheral surface of the drum 23 with the driving pulley and the idle pulley 26 engaged. The belt 29 is transported by the drive pulley when the motor M is rotated and the drum 23 is rotated by the frictional force acting between the belt 29 and the belt 29. [

The laundry processing apparatus 100 includes an air flow passage 40 for introducing air into the drum 23 and discharging air from the inside of the drum 23. The air flow path guides the inflow and outflow of air to the drum (23).

The air passage (40) includes an air supply passage (41) for guiding air into the drum (23). The air supply flow path 41 can guide the air inside the casing 10 or the air outside the casing 10 into the drum 23. In the present embodiment, the air supply flow path 41 guides air (air between the inner surface of the casing and the outer surface of the drum) inside the casing 10 into the drum 23.

The air passage (40) includes an exhaust passage (43) for guiding the air to flow out of the drum (23). The exhaust flow path 43 can guide air into or out of the casing 10. In the present embodiment, the exhaust passage 43 guides the air in the drum 23 to the outside of the casing 10.

Although not shown, in another embodiment, the air flow path may include a circulation flow path in which the exhaust flow path and the air supply flow path are connected so that air flows out of the drum 23 and the outflowed air flows back into the drum 23 .

The laundry processing apparatus 100 includes a heater 53 for heating the air introduced into the drum 23. The heater 53 is disposed on the air supply passage 41. The heater 53 is connected to the air supply flow path 41. The laundry processing apparatus 100 includes a heater supporting member 53a for supporting the heater 53. [ The heater support member 53a is fixed to the base 15.

The laundry processing apparatus 100 includes a fan 51 disposed on the air passage 40. The fan 51 pressurizes the air on the air passage 40 to flow. The fan 52 may be disposed in any one of the air supply passage 41 and the exhaust passage 43. As another example, the air passage 40 may include a circulating duct (not shown) that allows the air in the drum 23 to flow out and back into the drum 23, in which case the fan 51 is located on the circulating duct . In the present embodiment, the fan 51 is disposed on the exhaust flow path 43. The fan 51 may be provided as a centrifugal fan.

The fan 51 is rotated by the motor M. The fan 51 is coupled to the fan motor shaft 51s of the motor M. [ A negative pressure acts on the drum 23 by the suction force of the fan 51 when the fan 51 rotates so that the air that has passed through the air supply passage 41 flows into the drum 23. The air heated by the heater 53 flows into the heater connection portion 41a of the air supply flow passage 41 and then flows into the drum 23 via the outlet 41b and the air supply mechanism 28a, .

The air in the drum 23 flows into the exhaust passage 43 by the rotation of the fan 51. [ The front supporter 27 forms a hole through which the air exhausted to the lower side of the inlet 27a passes. The air in the drum 23 flows into the exhaust passage 43 through the holes of the front supporter 27 when the fan 51 operates.

The laundry processing apparatus (100) includes a filter (55) for filtering off foreign matter. The filter 55 filters foreign matter in the air flowing along the air passage 40. The filter 55 is provided on the front supporter 27. The filter 55 is disposed on the rear side of the front supporter 27. The filter 55 is disposed on the lower front side of the drum 23. The filter 55 collects foreign substances such as a lint floating in the air flowing into the exhaust passage 43 from the inside of the drum 23. The filter 55 includes filter mounts 55a and 55b disposed on the front supporter 27. [ The filter mounts 55a and 55b form a filter insertion port. The filter mounts 55a and 55b include a front part 55a and a rear part 55b, which are coupled and arranged in the front-rear direction. The front part 55a is connected to the hole of the front supporter 27, and the rear part 55b forms an exhaust port through which the air passes. A plurality of the exhaust ports are formed in the rear part 55b. The filter 55 includes a replacement filter portion 55c which is detachably inserted through the filter insertion port. The filter insertion port is opened toward the upper side. The replacement filter portion 55c may include a filter net having fine pores. The replacement filter portion 55c can be pulled up by the user's operation while being inserted into the filter insertion port and can be pulled out from the filter insertion port. When the fan 51 is operated while the replacement filter portion 55c is inserted into the filter insertion port, the air in the drum 23 flows through the holes of the exhaust port, the replacement filter portion 55c and the front supporter 27 sequentially And then flows into the exhaust flow path 43.

The exhaust flow path 43 includes an exhaust start end portion 43a disposed on the upstream side of the fan 51. [ The exhaust start end portion 43a is disposed in front of the front supporter 27. [ The exhaust flow path 43 includes an exhaust rear end 43b disposed on the downstream side of the fan 51. [ The exhaust flow path 43 includes a fan housing 43c which receives the fan 51 and forms a flow path of air. The fan housing 43c is connected to the exhaust start end 43a and the exhaust back end 43b. One end of the exhaust rear end 43b is connected to the fan housing 43c and the other end of the exhaust back end 43b is connected to the exhaust hole 13a of the back cover 13. [ Referring to the arrow Ae in FIG. 2, air passing through the exhaust port in the drum sequentially passes through the exhaust start end 43a, the fan housing 43c, and the exhaust rear end 43b. The air that has passed through the exhaust passage 43 is discharged to the outside of the casing 10 through the exhaust hole 13a.

The exhaust start end portion 43a forms an inlet port (not shown) through which the air introduced into the exhaust start end portion 43a passes and an outlet port (not shown) through which the air discharged from the exhaust start end portion 43a passes . The inlet of the exhaust start end 43a is connected to the hole of the front supporter 27. [ The outlet of the exhaust start end 43a is connected to the inlet of the fan housing 43c. The outlet of the fan housing 43c is connected to the inlet of the exhaust end 43b. The outlet end of the exhaust rear end 43b may be connected to the exhaust hole 13a of the back cover 13. [

Referring to FIG. 4, the laundry processing apparatus 100 'according to another embodiment will be described with reference to the differences from the laundry processing apparatus 100 as follows. The laundry processing apparatus 100 'has a drying function and a washing function at the same time.

The laundry treatment apparatus 100 'includes a tub 21 containing water. The tub 21 is disposed inside the casing 10. The tub 21 may be supported by a supporter (not shown) fixed to a base (not shown) or may be suspended by a hanger (not shown). A drum (23) rotatably disposed inside the tub (21) is disposed. A plurality of holes are formed in the circumferential surface of the drum 23 so that water in the tub 21 can be introduced into the drum 23. The front surface of the tub 21 is opened to form a filling port. A gasket (17) is provided between the inlet of the tub (21) and the inlet of the front cover (11).

In the laundry processing apparatus 100 ', a drum motor M1 for rotating the drum 23 is disposed on the rear side of the tub 21. [ The laundry processing apparatus 100 'includes a fan 51 disposed on the air supply flow path 41. The laundry processing apparatus 100 'includes a drum motor M1 and a fan motor M2 separate from the drum motor M1. The supply mechanism of the air supply flow path (41) is disposed in front of the tub (21). The exhaust port of the exhaust flow path 43 is disposed on the rear side of the tub 21. [

The laundry processing apparatus 100 'includes a water supply channel 61 for guiding water to allow water to flow into the tub 21 from an external water source. A water supply valve (63) is provided on the water supply flow path (61). And a detergent supply part 65 for containing the detergent is provided on the water supply flow path 61. Water flowing along the water supply channel (61) flows into the tub (21) through the detergent supply part (65).

The laundry treatment apparatus 100 'includes a drain passage 71 for guiding water to the outside of the casing 10 from the inside of the tub 21 through which the water flows. On the drainage flow path 71, a pump 73 for applying pressure to the water is provided.

Referring to the arrow As in Fig. 4, the outside air is supplied into the tub 21 through the air supply flow path 41. Fig. Referring to the arrow Ae in Fig. 4, the air in the tub 21 flows out to the outside through the exhaust passage 43. Fig.

Referring to FIG. 5, the laundry processing apparatuses 100 and 100 'include a control unit 30 that performs a control method. The control unit 30 controls each component of the laundry processing apparatuses 100 and 100 '. The control unit 30 can receive and process various signals.

The control unit 30 receives the input signal of the input unit 35. The control unit 30 controls the operation of the output unit 36.

The laundry processing apparatus 100, 100 'may include a timer 38. The timer 38 can measure the elapsed time from the start of the drying stroke. The timer 38 may measure the elapsed time from the start time te of the predetermined time section Ts. The control unit 30 may perform a control method using the measurement time of the timer 38. [

The laundry processing apparatus 100, 100 'includes a sensing module 31 that senses information related to the bag or air.

The sensing module 31 includes a temperature sensor 32 for sensing the temperature of the air in the drum 23 or the air on the air passage 40. The temperature sensor 32 may sense the temperature of the air in the drum 23 directly or may sense the temperature of the air flowing through the can. The temperature sensor 32 may be disposed on the exhaust passage 43 or the circulation passage to sense the temperature of the air flowing through the can. The control unit 30 receives the detection signal of the temperature sensor 32.

The sensing module 31 may include a humidity sensor 33 for measuring the humidity of the air in the drum 23 or air in the air passage 40. The humidity sensor 33 may directly sense the moisture content of the foam in the drum 23 or may sense the humidity of the air flowing through the foam. The humidity sensor may be disposed on the exhaust passage 43 or the circulation passage to sense the humidity of the air flowing through the can. The control unit 30 receives the detection signal of the humidity sensor.

The humidity sensor may include an electrode sensor 33 that uses a resistance value that varies depending on the amount of water in the drum 23. The electrode sensor 33 senses the resistance value between the two poles exposed into the drum 23. [

The control unit 30 controls the operation of the heater 53. The control unit (30) controls the operation of the motor (M). The control unit 30 can control the operation of the drum motor M1. The control unit 30 controls the operation of the fan motor M2. The control unit 30 can control the RPM of the motor M. [

The control unit 30 controls the laundry processing apparatuses 100 and 100 'according to a control method to be described later. For example, the control unit 30 determines whether or not a predetermined temperature condition is satisfied based on the temperature value sensed by the temperature sensor 32 within the predetermined time period Ts after the start of the drying cycle, It is possible to control the starting point of the subsequent steps (Z, Z ') to be different depending on whether the temperature condition is satisfied or not.

Hereinafter, a control method of the laundry processing apparatuses 100 and 100 'will be described with reference to FIGS. 6 to 12. FIG. In the present description, 'current time' means any one of the time from the start of the drying administration to the end of the drying administration. The control method is a method of controlling the drying cycle in which the laundry processing apparatuses 100 and 100 'dry the cloth. The 'point of view' described in the present description means a relative point of view based on the starting point (0 minutes) of the drying stroke.

The control method includes an initial drying step (S100) that progresses from a start time of the drying cycle to a start time (to) of a predetermined time interval Ts. The initial drying step (S100) proceeds first in the drying step. The initial drying step (SlOO) proceeds to the start time (to) of the predetermined time period Ts. The initial drying step (S100) proceeds before the temperature condition determination step (S300). The initial drying step (S100) may refer to a step from the starting point (0 minutes) of the drying cycle to the starting point (to) of the temperature condition determining step (S300). The initial drying step S100 may be performed just before the starting point of time of the temperature condition determination step S300.

In the initial drying step (S100), the drying cycle is controlled according to a predetermined time. The initial drying step (S100) controls the operation of the heater (53) according to a predetermined time. The initial drying step (S100) controls the operation of the fan (51) according to a predetermined time. That is, the initial drying step S100 controls the operation of the fan motor M according to a predetermined time.

In the initial drying step S100, a cooling process and a heating process may be performed. In the initial drying step (S100), the cooling process and the heating process may be repeatedly performed.

In the cooling process, power supplied to the heater 53 may be cut off. The cooling process may be performed by shutting off power supplied to the heater 53 and operating the fan 51. In the cooling process, relatively cool air can be supplied to the foam. For example, the cooling process may proceed to shut off all the power supplied to the heater 53 at a time. As another example, the cooling process may progress to reduce the power supplied to the heater 53 step by step and consequently to block the power supplied to the heater 53.

The heating process may proceed to supply power to the heater 53. The heating process may be performed by operating the heater 53 and the fan 51 simultaneously. In the heating process, relatively hot air can be supplied to the foam.

In the initial drying step (SlOO), the level of heating can be controlled to change. In the initial drying step S100, a high-level heating process for supplying a relatively large electric power to the heater 53 and a low-level heating process for supplying a relatively small electric power to the heater 53 may be performed. In the initial drying step S100, the high-level heating process and the low-level heating process may be repeatedly performed.

11, the graph of the electric power P represents a value obtained by adding the electric power supplied to the heater 70 and the motor electric power Pm. The motor power (Pm) means power supplied to the motor (M). 11, a time period during which the power Pm is supplied to the laundry processing apparatuses 100 and 100 'is a period during which the cooling process in which power supply to the heater 53 is interrupted and power is supplied only to the motor M to be. The time period during which the power P1 and the power P2 are supplied to the laundry processing apparatuses 100 and 100 'is a period during which the heater 53 and the motor M are supplied with electric power. The heater 53 may be supplied with any one of a plurality of level powers of different sizes. The heat generation amount of the heater 53 that supplies the power P2 is larger than the heat generation amount of the heater 53 that supplies the power P1.

The control method includes a temperature condition determination step (S300) after the initial drying step (S100). The initial drying step (S100) and the temperature condition determination step (S300) are continuously connected and proceeded. The temperature condition determination step S300 may be started at the same time as the end of the initial drying step S100.

In the temperature condition determination step (S300), the drying stroke is controlled according to the sensed temperature value. The temperature condition determination step S300 determines whether the predetermined temperature condition is satisfied based on the temperature value sensed by the temperature sensor 32 within the predetermined time period Ts during the progress of the drying process. Details of the temperature conditions will be described later.

The predetermined time interval Ts is preset to a period between a predetermined starting time point (to) greater than 0 and a predetermined end point time point (te) greater than the starting point point (to). The ending point (te) is set earlier than the ending point of the drying stroke.

The start time (to) of the temperature condition determination step (S300) is preset to a specific point in the drying cycle. The start time (to) of the temperature condition determination step S300 is the start time (to) of the predetermined time interval Ts.

The start time (to) of the predetermined time section Ts is set to any one time after a specific time from the start time of the drying stroke. For example, the start time (to) may be 62 minutes based on the start time (0 minute) of the drying cycle.

The ending point of the temperature condition determination step (S300) may be varied. The ending point of the temperature condition determination step S300 may be varied according to the sensed temperature value. The ending point of the temperature condition determination step (S300) may be varied depending on whether the temperature condition is satisfied or not. The ending point of the temperature condition determination step (S300) may vary depending on the time point at which the temperature condition is satisfied even when the temperature condition is satisfied.

The ending point of the temperature condition determination step S300 may be varied within the predetermined time period Ts. The ending point of the temperature condition determination step S300 is the ending point te of the predetermined time period Ts at the latest. Among the values that can be the ending point of the temperature condition determination step (S300), the fastest value may be the start time (to), and the latest value may be the end time (te).

The ending point (te) of the predetermined time interval Ts is set to any point in time after a specific time from the start point of the drying stroke. The ending time te is preset to a specific time later than the start time te. The ending time te of the predetermined time section Ts is set to any one time after a specific time from the start time to. For example, the ending time (to) may be 66.5 minutes based on the starting point (0 minutes) of the drying stroke. In this case, the ending time (to) is a time point of 4.5 minutes based on the start time (to).

In the temperature condition determination step S300, the heating process may proceed. For example, the heating process can be continued until the temperature condition is satisfied in the temperature condition determination step S300 and the time point te of the end time te of the predetermined time period Ts is reached.

The control method may further include an additional condition determination step (S200), which will be described later. The additional condition determination step (S200) may be started during the initial drying step (S100) or may be started during the temperature condition determination step (S300). The additional condition determination step (S200) may be performed before the temperature condition determination step (S300), during the temperature condition determination step (S300), or after the temperature condition determination step (S300).

In this embodiment, the additional condition determination step (S200) starts at the latter half of the initial drying step (SlOO). In the scenario according to Fig. 11, the start time ta of the additional condition determination step S200 is before the start time to of the temperature condition determination step S300.

For example, whether or not the temperature condition determination step S300 is performed may be determined according to whether the additional condition is satisfied. As another example, it is possible to select one of a plurality of different processes of the later stage Z 'according to whether the additional condition is satisfied or not. In this embodiment, either the final cooling step S500 of the later step Z 'and the additional drying step S400 may be selected depending on whether the additional condition is satisfied or not.

The control method includes a later step (Z, Z ') in which the starting point is varied according to whether the temperature condition is satisfied. The later stage (Z, Z ') may refer to a stage proceeding from the end of the temperature condition determination step (S300) to the final end of the drying cycle. The later steps (Z, Z ') may be performed immediately after the end of the temperature condition determination step (S300).

The process of the start of the temperature condition determination step S300 during the entire drying process may be referred to as an initial drying step S100 and the subsequent process at the end of the temperature condition determination step S300 may be referred to as a late drying process May be referred to as steps (Z, Z ').

The later steps (Z, Z ') may be performed for a predetermined time. The ending point of the later step (Z, Z ') is the ending point of the drying step (which means the whole process including the initial drying step, the temperature condition determination step and the later step). The total processing time of the later step (Z, Z ') is set regardless of whether the temperature condition is satisfied or not. The total processing time of the later steps (Z, Z ') is set independently of the time point of satisfaction of the temperature condition. Here, the total progress time of the later stage (Z, Z ') means the time from the start point of the later stage (Z, Z') to the end point of the later stage (Z, Z ').

According to whether the temperature condition is satisfied in the temperature condition determination step (S300), the start point of the later step (Z, Z ') may be changed and the end point of the drying step may be changed. The starting point of the later stage (Z, Z ') when the temperature condition is satisfied is set earlier than the starting point of the latter stage (Z, Z') when the temperature condition is unsatisfactory. If the temperature condition is satisfied, the temperature condition determination step S300 is terminated at a point in time (te) earlier than the point of time (te) within the predetermined time period Ts, and then the later step (Z, Z ') is started. If the temperature condition is unsatisfactory, the temperature condition determination step S300 ends at the end time te of the predetermined time period Ts, and then the later step Z, Z 'may start.

Even when the temperature condition is satisfied in the temperature condition determination step (S300), the starting point of the later stage may be changed according to the point of time when the temperature condition is satisfied, and the end point of the drying stroke may be changed. When the temperature condition is satisfied, the start time of the later step is set to be earlier as the time point at which the temperature condition is satisfied is earlier. If the temperature condition is satisfied at a relatively fast time point t1st within the predetermined time interval Ts, the temperature condition determination step S300 is terminated at the time point t1st, and the later step Z, Z ' ) Is started. When the temperature condition is satisfied at a relatively late time point t2nd within the predetermined time interval Ts, the temperature condition determination step S300 is terminated at the time point t2nd, and the later step Z, Z ' ) Is started. Here, the following relationship is established between the viewpoints. te ≤ t1st <t2nd ≤ te

The later stage (Z, Z ') may be started when the temperature condition is satisfied. At the time when the temperature condition is satisfied, the temperature condition determination step S300 may be terminated and the later step Z, Z 'may be started. Accordingly, the starting point of the later step (Z, Z ') differs depending on whether or not the temperature condition is satisfied and the satisfaction time point. The later stages Z and Z 'can be performed for a predetermined time and the ending points of the later stages Z and Z' are also changed as the starting point of the later stage Z and Z 'is changed.

The later steps (Z, Z ') may include a cooling process. The description of the cooling process is as described above. The later steps (Z, Z ') may include an end cooling step (S500). The termination cooling step S500 refers to a cooling process that is the last process of the drying cycle. The ending cooling step S500 is a process of cooling the can before the end of the drying cycle. When the end cooling step S500 is completed, all operations up to the operation of the fan 51 as well as the heater 53 are stopped, and the drying cycle is ended.

The later steps (Z, Z ') may also include a heating process. The description of the heating process is as described above. The later steps (Z, Z ') may include an additional drying step (S400). For example, if it is judged that the amount is relatively large, a heavy load drying process for the large-load discharging can be performed in the later stage (Z, Z ').

In later stages (Z, Z '), any one of a plurality of predetermined processes may be selectively performed.

The temperature condition may be a condition in which the temperature sensed by the temperature sensor 32 is equal to or higher than a preset reference temperature value. If the sensed temperature value is equal to or higher than the reference temperature value, the temperature condition can be regarded as satisfied. In addition, when the sensed temperature value is less than the reference temperature value, the temperature condition may be regarded as unsatisfactory.

The predetermined time interval Ts may be divided into a plurality of small time intervals Ts1, Ts2, .... A plurality of small time intervals (Ts1, Ts2, ...) are continuously connected in time. The predetermined time interval Ts is divided into first to n small time intervals Ts1, Ts2, ..., Tsn in chronological order. (Where n is a natural number of 2 or more).

The predetermined time interval Ts may be divided into a plurality of small time intervals Ts1, Ts2, ... by the division time td. N-1 divisional time points td1, ..., tdn-1 are previously set so that the predetermined time interval Ts is divided into n small time intervals Ts1, Ts2, ..., Tsn. A section from the start time t0 to the first divisional time td1 is preliminarily set as the first small time section Ts1. The interval from the (n-1) th separation time point (tdn-1) to the end time point (te) is preliminarily set as the nth small time interval Tsn. The section from the m-1th division point (tdm-1) to the mth division point (tdm) is preliminarily set as the mth small time interval (Tsm). (Where n is a natural number of 2 or more, and m is an arbitrary natural number of 2 or more and n or less).

Referring to FIG. 11, in this embodiment, the predetermined time interval Ts is divided into a first small time interval Ts1, a second small time interval Ts2, and a third small time interval Ts3. The predetermined time interval Ts is divided into three small time intervals Ts1, Ts2, and Ts3 by the two division points td1 and td2. For example, the starting point (to), the first division point of time td1, the second division point of time td2, and the end point of time te are 62 minutes at the starting point (0 minute) Minute, 64.5 minutes, and 66.5 minutes, respectively. In this case, the first small time section Ts1 is set as a section from 62 minutes to 64 minutes on the basis of the start time (0 minute) of the drying stroke, and the second small time section Ts2 is set as 64 minutes 64.5 minutes, and the third small time interval (Ts3) is preset to a period from 64.5 minutes to 66.5 minutes.

A plurality of reference temperature values respectively corresponding to the plurality of small time intervals Ts1, Ts2, ... may be preset. n reference temperature values corresponding to n small time intervals Ts1, Ts2, ..., Tsn, respectively, may be preset. The first to n reference temperature values respectively corresponding to the first to n small time intervals Ts1, Ts2, ..., Tsn are preset. (Where n is a natural number of 2 or more).

The first reference temperature value corresponding to the first small time period Ts1 is previously set. The n-th reference temperature value corresponding to the n-th small time period Tsn is previously set. The m-th reference temperature value corresponding to the m-th small time interval Tsm is preset. (Where n is a natural number of 2 or more, and m is an arbitrary natural number of 2 or more and n or less).

The two reference temperature values corresponding to the two small time intervals adjacent in time are set differently from each other. The difference between the two reference temperature values corresponding to the two small time intervals adjacent in time may be set to be about 0.5 to 1.5 degrees apart. The plurality of reference temperature values may be set differently from each other. The first to n reference temperature values may be set differently from each other. Among the first to n reference temperature values, the (m-1) reference temperature value may be set to be larger than the m-th reference temperature value. (Here, n is a natural number of 2 or more, and m is an arbitrary natural number of 2 or more and n or less.) When the reference temperature value corresponding to the small-time interval late in time is smaller than the reference temperature value corresponding to the small- Respectively.

11, the first reference temperature value corresponding to the first small time period Ts1, the second small time period Ts2 and the third small time period Ts3, Value and the third reference temperature value are preset. For example, the first reference temperature value, the second reference temperature value, and the third reference temperature value may be set to 46 degrees, 45 degrees, and 44 degrees, respectively.

The satisfaction of the temperature condition may be determined by comparing a temperature value sensed in a small time period of the current time among the first to n small time intervals Ts1, Ts2, ..., Tsn, Is compared with the reference temperature value corresponding to the small time period to which the time point belongs.

The temperature condition may include a plurality of conditions. The temperature condition may be preset to the first to n temperature conditions according to the small time period to which the current time point belongs. The temperature condition includes a first temperature condition in which the sensed temperature value in the first small time interval is equal to or greater than a first reference temperature value. The temperature condition includes an n-th temperature condition in which a temperature value sensed within a n-th small time interval is equal to or greater than an n-th reference temperature value. The temperature condition includes an (m-1) temperature condition in which the sensed temperature value in the (m-1) th small time interval is not less than the (m-1) reference temperature value. The temperature condition includes an m-th temperature condition in which the sensed temperature value within the m-th small time interval is equal to or greater than the m-th reference temperature value. (Where n is a natural number of 2 or more, and m is an arbitrary natural number of 2 or more and n or less).

The reference temperature value corresponding to the small time period to which the current time point belongs is compared with the temperature value detected at the current time point to determine whether the temperature condition is satisfied.

And if the first temperature condition is satisfied in the first small time period, it is determined that the temperature condition is satisfied. After the time when the first temperature condition is satisfied, it is not judged whether the temperature condition is further satisfied. In addition, if the first temperature condition is not satisfied in the first small time period, then it is determined whether or not the second temperature condition is satisfied.

If the temperature condition is not satisfied until the start time of the (m-1) th small time period, whether the m-1 temperature condition is satisfied is determined whether the current time belongs to the (m-1) th small time period. If the (m-1) temperature condition is satisfied, it is determined that the temperature condition is satisfied. If the (m-1) temperature condition is not satisfied, then the m-th temperature condition is determined to be satisfied. If the temperature condition is not satisfied until the start time of the n-th small time period, it is determined whether or not the n-th temperature condition is satisfied in the state where the current time belongs to the n-th small time period. If the nth temperature condition is satisfied, the temperature condition is determined to be satisfied. If the nth temperature condition is not satisfied, the temperature condition determining step S300 may continue until the ending time te. (Where n is a natural number of 2 or more, and m is an arbitrary natural number of 2 or more and n or less.

The additional condition may be a predetermined drying condition in which the humidity at satisfaction is estimated to be lower than a predetermined standard based on the value detected by the humidity sensor. The humidity sensor may be an electrode sensor 33. For example, the drying condition may include a condition that a resistance value detected by the electrode sensor 33 is equal to or greater than a predetermined value. For example, the electrode sensor 33 continuously measures the resistance value, and includes a condition that the cumulative number of times that the plurality of resistance values measured at the time intervals by the electrode sensor 33 become a predetermined value or more becomes equal to or greater than a predetermined number of times can do.

The satisfaction of the drying condition can be judged based on the value sensed by the humidity sensor at the previous time point ta of the start time point (to) of the predetermined time interval Ts. It is possible to measure the satisfaction of the drying condition based on the resistance value measured by the electrode sensor 33 at the time point ta.

In the present embodiment with reference to FIG. The resistance values detected by the electrode sensor 33 from the time point ta, which is the previous time point of the starting point of time to, are used as a basis for judging the drying condition. For example, it is possible to determine whether or not the drying condition is satisfied based on the resistance value sensed by the electrode sensor 33 at a time point ta after 60 minutes from the start time (0 minute) of the drying stroke. A plurality of resistance values may be continuously detected from the time point ta, and when the number of times that the resistance values become 200 ohms or more cumulatively reaches 50 times or more, the drying condition may be preset to be satisfied.

Referring to FIG. 6, a control method according to an embodiment of the laundry processing apparatuses 100 and 100 'is as follows. First, an initial drying step (S100) is performed. At the start time (to) of the predetermined time period Ts, the initial drying step S100 ends and the temperature condition determination step S300 starts. After the temperature condition determination step (S300) ends, the later step (Z) proceeds. In the later step (Z), the end cooling step (S500) proceeds. When the temperature condition determination step S300 is finished, the end cooling step is performed.

Referring to FIG. 7, the control method according to another embodiment of the laundry processing apparatuses 100 and 100 'is as follows. The control method according to another embodiment further includes a step (S200) of judging whether or not a predetermined additional condition is satisfied. First, an initial drying step (S100) is performed. At the start time (to) of the predetermined time period Ts, the initial drying step S100 ends and the temperature condition determination step S300 starts. After the temperature condition determination step S300 ends, the later step Z 'proceeds. Before the start of the later stage Z ', the additional condition determination step S200 is performed. Although FIG. 7 shows that the additional condition determination step S200 is performed after the temperature condition determination step S300, the additional condition determination step S200 may be completed only before the later step Z '. Specifically, the additional condition determination step S200 may proceed before the temperature condition determination step S300, or may proceed during the temperature condition determination step S300.

In the later step (Z '), if the additional condition is satisfied, a final cooling step (S500) is performed in which the can is cooled before the end of the drying cycle. In the later step Z ', if the additional condition is unsatisfactory, the additional drying step S400 is performed. In the end cooling step S500, only the cooling process is performed. The additional drying step Z400 includes the heating process. The additional drying step Z400 may include not only the heating process but also the cooling process. In the later step Z ', either one of the pre-set end cooling step S500 and the pre-set additional drying step S400 is selected and proceeded according to whether or not the additional condition is satisfied.

Referring to FIGS. 8 to 10, during the initial drying step S100, the process of determining whether the current time is within the predetermined time interval Ts may be performed (S180, S320). If the current time is within the predetermined time period Ts during the initial drying step S100, the process of determining whether the temperature condition is satisfied is performed (S370). Determining whether or not the temperature condition is satisfied based on the temperature value sensed at a certain point of time, and continuing heating if the temperature condition is not satisfied, satisfying the temperature condition based on the sensed temperature value at a later time point . If the temperature condition is satisfied, the later step (Z, Z ') proceeds. Even if the temperature condition is not satisfied, the later stage (Z, Z ') proceeds when the present time point exceeds the end point (te).

Referring to FIGS. 8 to 10, after starting the initial drying step S100, the current time point t is compared with the starting point to in step S180. In step S180, it is determined whether the current time t exceeds the start time to. If it is determined in step S180 that the current time t is less than the start time t0, the initial drying step S100 continues. If it is determined in step S180 that the current time point t has exceeded the start time point to, the initial drying step S100 ends and the temperature condition determination step S300 starts.

Referring to FIGS. 8 to 10, after the start of the temperature condition determination step S300, the current time point t is compared with the end point time te (S320). In step S320, it is determined whether the current time t is less than or equal to the end time te.

If it is determined in step S320 that the current time t is less than the end time te, a process of determining whether the temperature condition is satisfied is performed (S370, S370a, S370b, and S370c).

In the temperature condition determination step S300, the heater 53 and the motor M are operated with a predetermined power to proceed the heating process. In the temperature condition determination step S300, the fan 51 and the heater 53 can be continuously operated until the temperature condition determination step S300 is completed. While the process (S320) and the processes (S370, S370a, S370b, and S370c) are in progress, the heating process continues. If the temperature condition is unsatisfactory in the processes (S370, S370a, S370b, and S370c), the heating process (S380) of the temperature condition determination process (S300) continues. Thereafter, the process (S320) is performed again.

If the temperature condition is satisfied in the steps S370, S370a, S370b, and S370c, the temperature condition determination step S300 ends and the later step Z, Z 'starts.

If it is determined in step S320 that the current time t exceeds the end time te, the temperature condition determination step S300 ends and the later step Z, Z 'starts.

In the temperature condition determination step S300, it is possible to continuously determine whether the temperature condition is satisfied until the temperature condition is satisfied within the predetermined time period Ts. The satisfaction of the temperature condition is based on a temperature value detected at a specific time point in the predetermined time period Ts. The temperature sensor 32 can sense the temperature value at each time point and the processes (S370, S370a, S370b, and S370c) can be performed based on the temperature value sensed at the next time until the temperature condition is satisfied have. If the temperature condition is not satisfied based on the temperature value sensed at a specific time point, it is determined whether the temperature condition is satisfied based on the temperature value sensed at another specific time point after the specific time point. On the other hand, the temperature sensor 32 may sense the temperature value continuously over time or may sense the temperature value at a relatively short time interval relatively to the predetermined time interval Ts.

If the temperature condition is not satisfied continuously, the temperature condition determination step (S300) ends when the current time point is the end point (te). If the temperature condition is satisfied, the temperature condition determination step S300 ends when the temperature condition within the predetermined time period Ts is satisfied. If the temperature condition is unsatisfactory within the predetermined time period Ts, And ends at the end time te of the predetermined time period Ts.

8, steps S100, S180, S320, S370, and S380 in the control method according to the first embodiment are as described above. In the first embodiment, even if the temperature condition is satisfied or the temperature condition is not satisfied, the end cooling time S500 proceeds immediately after the end time te is exceeded.

Referring to FIG. 9, in the control method according to the second embodiment, steps S100, S180, S320, S380, and S500 are as described above. The second embodiment will be described below focusing on the differences from the first embodiment.

In the second embodiment, the predetermined time interval Ts is divided into a plurality of small time intervals Ts1, Ts2, .... The temperature condition determination step S300 may include a step S330a or 330b of determining which of the plurality of small time intervals the current time point belongs to. The temperature condition determination step S300 includes a step S330a and a step S330b of comparing the current time point with the distinction time points td1 and td2. If it is determined that the current time point is included in the small time period to which the current time point belongs, the reference temperature value corresponding to the small time period to which the current time point belongs is compared with the temperature value sensed at the current time point to determine whether the temperature condition is satisfied.

Referring to FIG. 9, if the present time is before the end time te in step S320, it is determined whether the current time is less than the first time point td1 (S330a).

If it is less than the current time and the first division time td1 in step S330a, the process of determining whether the first temperature condition is satisfied is performed (S370a). The first temperature condition is satisfied when the temperature value sensed at the current time point is equal to or higher than the first reference temperature value.

If the current time point exceeds the first time point td1 in step S330a, it is determined whether the current time point is less than the second time point td2 in step S330b.

If it is less than the current time and the second divisional time point td2 in the step S330b, the process of determining whether the second temperature condition is satisfied is performed (S370b). The second temperature condition is satisfied if the temperature value sensed at the current time point is equal to or higher than the second reference temperature value.

If the current time point exceeds the second time point td2 in step S330b, it is determined whether the third temperature condition is satisfied (S370c). The third temperature condition is satisfied when the temperature value sensed at the present time point is equal to or higher than the third reference temperature value.

If the first temperature condition is unsatisfactory in step S370a, the heating process continues (S380). If the first temperature condition is unsatisfactory in step S370a, step S320 may be performed again.

If the second temperature condition is unsatisfactory in the process (S370b), the heating process (S380) continues. If the second temperature condition is unsatisfactory in step S370b, the process of step S320 may be performed again.

If the third temperature condition is unsatisfactory in step S370c, the heating process continues (S380). If the third temperature condition is unsatisfactory in step S370c, step S320 may be performed again.

If the first temperature condition is satisfied in step S370a, the temperature condition determination step S300 ends. If the second temperature condition is satisfied in step S370b, the temperature condition determination step S300 ends. If the third temperature condition is satisfied in step S370c, the temperature condition determination step S300 ends.

In the second embodiment, if the first temperature condition, the second temperature condition or the third temperature condition is satisfied or the first to third temperature conditions are not satisfied, if the end time te is exceeded, the end cooling step S500 ).

Referring to FIG. 10, in the control method according to the third embodiment, the processes S100, S180, S320, S370, and S380 are as described above. The third embodiment will be described below focusing on the differences from the first embodiment.

In the third embodiment, even if the temperature condition is satisfied or the temperature condition is not satisfied, the end cooling step S500 or the additional drying step S400 is performed immediately after the end time te. For example, the additional drying step S400 may be a heavy load drying step S400a for a relatively large amount. In the additional drying step S400, an additional heating process may be performed.

The control method according to the third embodiment includes the additional condition determination step S200. The additional condition may be the drying condition. The process of determining whether the drying condition is satisfied before the start of the later stage Z 'is performed (S200a). If the drying condition is satisfied in step S200a, the final cooling step S500 is performed after the temperature condition determination step S300. If the drying condition is unsatisfactory in step S200a, the large-load drying step S400a is performed after the temperature condition determination step S300.

Referring to FIGS. 11 and 12, a scenario of the control method according to the second embodiment will be described as follows. In Fig. 11, the horizontal axis of the coordinates indicates the time axis at which the start point of the drying cycle is set to zero, and the vertical axis of the coordinates indicates the power (P) supplied to the laundry processing apparatus. The electric power supplied to the laundry processing apparatus can be supplied to the motor (M) and the heater (53). In the horizontal axis, t1, t2, t3, t4, t5, t6 and t7 represent the graduations at a specific point in time, and t1, t2, t3, t4, t5, Value. Further, in this scenario, the reference time point ta for judging the drying condition is preset to the time point t6. In the vertical axis, Pm, P1 and P2 represent the motor power, the first level power and the second level power, respectively. For example, the first level power P1 is 2700W and the second level power P2 is 5400W.

In FIG. 11, the process up to the start time (to) of the predetermined time interval Ts represents an initial drying step (S100). In FIG. 12, steps (S101) to (S111) show an initial drying step (S100). The initial drying step (SlOO) proceeds according to a predetermined time. In the initial drying step (S100), first, the cooling process (S101) for 5 minutes is performed with the motor power (Pm). Thereafter, the heating process (S102) proceeds for 10 minutes with the first level power P1. Thereafter, a cooling process of 4 minutes with the motor power Pm and a heating process of 2.5 minutes with the first-level power P1 are alternately repeated twice. (S103) Thereafter, the cooling process of 3.5 minutes with the motor power Pm and the heating process of 2.5 minutes with the first level power P1 are alternately repeated twice. (S104) Thereafter, the cooling process for the motor power Pm for 3 minutes and the heating process for 2.5 minutes for the first-level power P1 are alternately repeated twice. (S105) Thereafter, the heating process (S106) for 1.5 minutes is performed with the first level power P1. Thereafter, the heating process (S107) for 3.5 minutes is performed at the second level power P2. Thereafter, the heating process (S108) for 1.5 minutes is performed with the first level power P1. Thereafter, the heating process (S108) for 1.5 minutes is performed with the first level power P1. Thereafter, the cooling process (S109) proceeds for 1.5 minutes with the motor power Pm. Thereafter, the heating process S110 proceeds for 1.5 minutes at the first level power P1. Thereafter, a heating process (S111) for 1.5 minutes is performed with the second level power P2. When the heating process S111 ends, the start time (to) becomes 62 minutes based on the start time of the drying cycle. Meanwhile, the process of determining whether the drying condition is satisfied at a time ta of 60 minutes is progressed during the process of S110. In this scenario, the following process is performed on the assumption that the drying condition is satisfied.

From the start time (to) of the predetermined time interval Ts, the temperature condition determination step is performed. In this scenario, the heating process is performed from the start time (to) to the first level power P1, and the process of determining whether the temperature condition is satisfied is performed (S371) based on the sensed temperature value.

11 and 12 show scenarios of four different cases (①, ②, ③, and ④) according to which one of the first to third temperature conditions is satisfied and all are unsatisfactory.

In the scenario of the first case (1), the first temperature condition is satisfied while the temperature condition determination step S300 is performed in the first small time period Ts1. (S372) When the first temperature condition of the first small time period Ts1 is satisfied, the temperature condition determination step S300 is ended and the end cooling step S500 is started. In the termination cooling step S500, the cooling process proceeds with the motor power Pm.

In the second case (2), the first temperature condition is unsatisfactory within the first small time period Ts1 until the first division time td1, and the temperature condition determination step S300 is performed in the second small time period Ts2 after the start time td1. During the temperature condition determination step S300 in the second small time period Ts2, the second temperature condition is satisfied. (S373) When the second temperature condition of the second small time period Ts2 is satisfied, the temperature condition determination step S300 is ended and the end cooling step S500 is started. In the final cooling step S500, the cooling process is performed with the motor power Pm.

In the third case (3), the second temperature condition is unsatisfactory within the second small time period Ts2 up to the second division time point td2, and the temperature condition determination step S300 is performed in the third small time period Ts3 after the start time td2. During the temperature condition determination step S300 in the third small time period Ts3, the third temperature condition is satisfied. (S374) When the third temperature condition is satisfied in the third small time period Ts3, the temperature condition determination step S300 is ended and the end cooling step S500 is started. In the final cooling step S500, the cooling process is performed with the motor power Pm.

In the fourth case (4), the third temperature condition is unsatisfactory within the third small time period Ts3 until the end time te of the predetermined time period Ts, and the temperature condition determination step S300 is ended (Te). As a result, the temperature condition is unsatisfactory. (S375) At the end point te, the temperature condition determination step S300 is ended and the end cooling step S500 is started. In the final cooling step S500, the cooling process is performed with the motor power Pm.

13 to 15, experimental results according to an experimental example of the present invention are shown. The result of the scenario of FIG. 11 and FIG. 12 and the control method of the second embodiment of the present invention is shown by Q, and the result of the control method of the comparative example to be compared with the scenario of FIG. The comparative example O performs the heating process for 3.5 minutes at the first level power P1 from the time point from 62 minutes to 65.5 minutes after the judgment of the temperature condition in the scenario of Fig. 11 and Fig. 12 , And a final cooling step is performed. The cycle from the starting point (0 minutes) to the starting point (62 minutes) of the drying stroke of the comparison object (O) is the same as the initial drying stage (S100) of this embodiment (Q).

The term &quot; final water content (FMC) &quot; referred to in this description means the ratio of the weight of water remaining in the capsule to the weight of the capsule at the end of the drying stroke. The smaller the final water content (FMC), the better the dryness of the fabric. The final water content (FMC) of 1.8% is a value required for sufficient drying. When the final water content (FMC) is less than 1.8%, the drying is considered to be good.

In the present embodiment (Q) and the comparative example (O), the number of times of drying is increased, the final moisture content (FMC) of the resulting blanket of each drying cycle is measured, The vertical length of the graph), the median value, and the average value are shown in Figs.

(Dq) of the final moisture content (FMC) according to the present example (Q) is about 1/2 (Dq), as compared with the scattering rate Do of the final moisture content (FMC) , Respectively. Through the present invention, a uniform level of drying of the blanket can be achieved in each drying cycle. Accordingly, the present invention minimizes the drying failure condition in which the minimum drying condition is unsatisfactory.

Fig. 14 shows the results of experiments conducted under conditions different from each other in the duct condition (Ds) in this embodiment (Q) and the comparative example (O). Nor represents a normal duct state, and Abn represents an abnormal duct state, in which a foreign matter is placed in an exhaust port of the exhaust flow path 43 in this experimental example to increase the flow resistance.

The results of the experiment of FIG. 14 show that the duct condition (Ds) in the present embodiment (Q) is smaller than the scattering rate (D1o) of the final water content (FMC) according to the duct condition (D1q) of the final water content (FMC) according to the present invention is remarkably reduced. In the comparative example O, the average final water content FMC of the duct unsteady state Abn is 1.68%, the final water content FMC of the duct normal state Nor is 0.90%, and the average deviation E1o is relatively low very big. On the other hand, in the present embodiment (Q), the average final water content FMC of the duct unstable state Abn is 1.57%, which is smaller than that of the comparative example O. In this embodiment Q, ) Was 1.11%, which is larger than that of the comparative example (O), and the average deviation (E1q) thereof was remarkably reduced. It can be seen from the present invention that even though the duct condition (Ds) condition is varied, a uniform level of drying of the fabric can be achieved.

FIG. 15 shows the results of experiments conducted under different conditions of the voltage (V) applied to the laundry processing apparatus in this embodiment (Q) and the comparative example (O). 237.6V and 242.4V show the effective voltage, which is an experimental condition considering that slight variation may occur depending on the assumption that the voltage is supplied.

15, compared with the scattering D2o of the final water content FMC according to the voltage (V) condition in the comparative example O, the end result according to the voltage (V) condition in this embodiment (Q) It can be seen that the scattering (D2q) of the water content (FMC) is remarkably reduced. The average final water content FMC when the voltage of 237.6 V is applied is 1.15%, the final water content FMC when the 242.4 V voltage is applied is 1.43%, and the average deviation E2o is It is relatively large. On the other hand, in the present embodiment (Q), the average final water content FMC when the voltage of 237.6 V is applied is 1.26%, which is larger than that of the comparative example O. In this embodiment Q, The final water content (FMC) when applied is 1.42%, which is smaller than that of the comparative example (O), and the average deviation (E2q) is smaller. It can be seen from the present invention that even though the voltage (V) conditions are varied, a uniform level of drying of the blanket can be achieved.

In addition, even in the case of the present embodiment (Q) and the comparative example (O), even if the deviation of other conditions such as the humidity condition around the laundry processing apparatus is taken into account, the present invention can achieve a uniform level of drying of the cloth can confirm. According to the present invention, it is possible to control the length of the heating process and to achieve a uniform degree of drying of the cloth even when the environment deviates through the satisfaction of the temperature condition and the satisfaction time point.

100, 100 ': laundry processing apparatus 10: casing
23: Drum M: Motor
40: air passage 51: fan
53: heater 30:
32: Temperature sensor 33: Electrode sensor
S100: initial drying step S300: temperature condition determination step
S200: additional condition judgment step Z, Z ': late step
S500: end cooling step S400: additional drying step
Ts: predetermined time interval to: starting time point of a predetermined time interval
te: End point of the predetermined time interval td, td1, td2:
Ts1, Ts2, Ts3: small time intervals

Claims (20)

An air passage for introducing air into the drum and discharging air from the drum; a fan disposed on the air passage; a heater for heating air introduced into the drum; Or a temperature sensor for sensing a temperature of the air, the method comprising:
A temperature condition determination step of determining whether a predetermined temperature condition is satisfied based on a temperature value sensed by the temperature sensor within a predetermined time period during the course of the drying process; And
Wherein the starting point is different according to whether the temperature condition is satisfied or not. The method according to claim 1,
Wherein the starting point of the later stage when the temperature condition is satisfied is earlier than the starting point of the later stage when the temperature condition is unsatisfactory. The method according to claim 1,
Wherein when the temperature condition is satisfied, the start time of the later step is set to be faster as the time point at which the temperature condition is satisfied is faster. The method according to claim 1,
Wherein the second step is started when the temperature condition is satisfied. The method according to claim 1,
The total progress time of the later stage is,
Wherein the temperature condition is satisfied regardless of whether the temperature condition is satisfied or not. The method according to claim 1,
In the later step,
And a final cooling step of cooling the fabric before the end of the drying cycle. The method according to claim 1,
Further comprising the step of determining whether a predetermined additional condition is satisfied,
In the later stage,
Wherein when the additional condition is satisfied, a final cooling step of cooling the cloth before the end of the drying cycle is performed, and if the additional condition is unsatisfactory, the additional drying step is performed. 8. The method of claim 7,
Wherein the laundry processing apparatus further comprises a humidity sensor for sensing the humidity of the bag or the air,
The above-
And a predetermined drying condition which is estimated based on a value detected by the humidity sensor to be less than a predetermined reference humidity. 9. The method of claim 8,
Whether or not the drying condition is satisfied,
(Ta) at a start time (to) of a predetermined time interval based on a value detected by the humidity sensor. The method according to claim 1,
Further comprising an initial drying step of controlling the operation of the heater and the fan according to a predetermined time from a start time point of the drying step until a start time point of the predetermined time period. The method according to claim 1,
The predetermined time interval may include:
Wherein the predetermined period is predefined as a period between a predetermined start time point greater than zero and a predetermined end point time point greater than the start time point. 12. The method of claim 11,
Wherein the temperature condition determination step determines whether the temperature condition is satisfied continuously until the temperature condition is satisfied within the predetermined time period. 12. The method of claim 11,
The temperature condition determination step may include:
A control method of the laundry processing apparatus is terminated at a time point when the temperature condition is satisfied within the predetermined time period if the temperature condition is satisfied and ends at the end time point of the predetermined time period if the temperature condition is unsatisfactory within the predetermined time period . 14. The method of claim 13,
And in the temperature condition determination step, the fan and the heater are continuously operated until the temperature condition determination step is finished. The method according to claim 1,
The predetermined time interval is divided into first to n-th time intervals in chronological order,
The first to n reference temperature values respectively corresponding to the first to n-th time intervals are preset,
Whether or not the temperature condition is satisfied,
The temperature value detected in the small time period in which the current time point belongs to the first to n small time periods is compared with a reference temperature value corresponding to a small time period in which the current time point belongs to the first to n reference temperature values, And a control unit for controlling the laundry processing apparatus.
Here, n is a natural number of 2 or more. The method according to claim 1,
The temperature condition is,
Wherein the temperature detected by the temperature sensor is equal to or greater than a preset reference temperature value. The method according to claim 1,
The predetermined time interval is divided into first to n-th time intervals in chronological order,
The first to n reference temperature values respectively corresponding to the first to n-th time intervals are preset,
The temperature condition is,
An m-1 temperature condition in which the sensed temperature value in the (m-1) th small time interval is not less than the (m-1) reference temperature value; And
And a m th temperature condition in which the sensed temperature value in the m th small time interval is equal to or greater than the m th reference temperature value.
Here, n is a natural number of 2 or more, and m is an arbitrary natural number of 2 or more and n or less. 18. The method of claim 17,
Wherein the m-1 reference temperature value is preset to be greater than the m reference temperature value among the first to n reference temperature values. 18. The method of claim 17,
If the (m-1) th temperature condition is satisfied, it is determined that the temperature condition is satisfied,
And if the m-1 temperature condition is not satisfied, whether or not the m-th temperature condition is satisfied is set. A drum for receiving the can;
An air flow path for introducing air into the drum and discharging air from the drum;
A fan disposed on the air flow path;
A heater for heating the air introduced into the drum;
A temperature sensor for sensing the temperature of the bag or the air; And
Determining whether or not a predetermined temperature condition is satisfied based on a temperature value sensed by the temperature sensor within a predetermined time interval after the start of the drying cycle, And a control unit for controlling the washing operation of the laundry.

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