KR20190143317A - Dryer and drying method thereof - Google Patents

Abstract

Disclosed is a dryer. The dryer comprises: a drum accommodating objects to be dried; a first sensor sensing a drying state of the object to be dried accommodated in the drum; a heating unit heating air supplied inside the drum; a blowing unit including a fan forming flows of air penetrating the inside of the drum; a second sensor sensing the temperature of air discharged from the drum; and a processor, when a user input for selecting a specific course is received, controlling the drum, the heating unit and the blowing unit to perform a drying operation, and after the drying operation starts, controlling a rotation direction of the drum based on the drying state of the objects to be dried, which is sensed by the first sensor, and then, controlling the termination of the drying operation based on the temperature of the air sensed by the second sensor. Accordingly, the present invention prevents defections for drying and protects objects to be dried from being damaged due to over-drying.

Description

Dryer and its drying method {DRYER AND DRYING METHOD THEREOF}

The present invention relates to a dryer and a drying method thereof, and more particularly, to a dryer and a drying method thereof capable of carrying out drying for the object to be dried.

In general, a dryer is a device that rotates a drum containing wet items, such as clothing, and performs drying and sterilization by applying hot air to the items for a predetermined time.

In this case, however, when the drying of the bulky object is performed, the degree of drying of the dry item cannot be accurately determined in that the object is rotated together with the drum in a folded or dried state. There was a problem that the time was calculated incorrectly.

Accordingly, there is a demand for a method for more efficiently drying the dried items.

The present invention is in accordance with the above-mentioned necessity, an object of the present invention is to control the rotation direction of the drum based on the dry state of the dry matter in the drying stroke, and to terminate the drying stroke based on the temperature of the air discharged from the drum. It is to provide a dryer that can be controlled and a drying method thereof.

Dryer according to an embodiment of the present invention for achieving the above object is a drum, the first sensor for sensing the dry state of the dry matter accommodated in the drum, the air supplied into the drum When a heating unit for heating, a blower including a fan to form a flow of air passing through the drum, a second sensor for sensing the temperature of the air discharged from the drum and a user input for selecting a specific course, Controlling the drum, the heating unit, and the blower unit to perform a drying stroke, controlling a rotation direction of the drum based on a dry state of the dried object sensed by the first sensor after the drying stroke is started, And a processor for controlling the end of the drying stroke based on the temperature of the air sensed by the two sensors.

Here, the processor may change the rotation direction of the drum based on the dry state of the dry object sensed by the first sensor.

In addition, the processor rotates the drum in the first direction in the drying stroke, and if the value representing the dry state of the dry object sensed by the first sensor is equal to or less than a predetermined value, the first direction and The drum may be rotated in a second opposite direction, and the drying stroke may be performed again after the predetermined time has elapsed.

And, after the drying stroke is performed again, the processor is based on the elapsed time from when the drying stroke is started if a value indicating a dry state of the dry object sensed by the first sensor is equal to or less than the predetermined value. To further determine the time to perform the drying stroke, and further perform the drying stroke during the determined time.

In addition, the processor may rotate the drum in the second direction for the predetermined time at a specific time period in the drying stroke that is further performed.

On the other hand, the heating unit may include a compressor for heating the air supplied into the drum.

Here, the processor controls the on / off of the compressor on the basis of the temperature sensed by the second sensor in a drying stroke performed after the rotation direction of the drum is controlled, and based on the control state of the compressor The end of the drying stroke can be controlled.

In addition, the drying stroke performed after the rotational direction of the drum is controlled may be set to be performed for a time determined based on the elapsed time from when the drying stroke is started.

If the number of times the compressor is turned off is a predetermined value, the processor may end the drying stroke even before the determined time elapses.

The processor may turn off the compressor when the temperature sensed by the second sensor is a preset first temperature. If the temperature sensed by the second sensor is a second preset temperature after the compressor is turned off, the processor is turned off. The compressor can be turned on.

On the other hand, the drum according to an embodiment of the present invention includes a drum, a first sensor for sensing the dry state of the dry matter accommodated in the drum and a second sensor for sensing the temperature of the air discharged from the drum In the drying method of the dryer, when a user input for selecting a specific course is received, a drying stroke is performed, and the rotation direction of the drum is based on a dry state of the dried object sensed by the first sensor after the drying stroke is started. And controlling the end of the drying stroke based on the temperature of the air sensed by the second sensor.

Here, the controlling of the rotation direction may change the rotation direction of the drum based on the dry state of the dried object sensed by the first sensor.

The controlling of the rotation direction may include rotating the drum in a first direction in the drying stroke, and when a value indicating a dry state of the dried object sensed by the first sensor is equal to or less than a predetermined value, for a predetermined time. The drum may be rotated in a second direction opposite to the first direction, and the drying method may further include performing the drying stroke again after the predetermined time elapses.

In addition, in the drying method, if the value indicating the dry state of the dried object sensed by the first sensor is equal to or less than the predetermined value after the drying stroke is performed again, the elapsed time from when the drying stroke is started. The method may further include determining a time for performing the drying stroke based on the additional time, and further performing the drying stroke during the determined time.

In addition, the performing of the drying stroke may further include rotating the drum in the second direction for the predetermined time at a specific time period in the drying stroke that is additionally performed.

On the other hand, the dryer may further include a compressor for heating the air supplied into the drum.

The controlling of the end of the drying stroke may include controlling on / off of the compressor based on a temperature sensed by the second sensor in a drying stroke performed after the rotation direction of the drum is controlled. The end of the drying stroke can be controlled based on the control state of the compressor.

In addition, the drying stroke performed after the rotational direction of the drum is controlled may be set to be performed for a time determined based on the elapsed time from when the drying stroke is started.

The controlling of the end of the drying stroke may end the drying stroke even before the determined time elapses if the number of times the compressor is turned off is a predetermined value.

In addition, if the temperature sensed by the second sensor is a predetermined first temperature, the drying method turns off the compressor that is in operation, and if the temperature sensed by the second sensor after the compressor is turned off is a preset second temperature The method may further include turning on the compressor that is turned off.

According to various embodiments of the present disclosure as described above, it is possible to prevent the occurrence of drying defects for undried in that the rotation direction of the drum is changed in order to sense a more accurate dry state of the dry object when performing the drying stroke, In addition, since the end of the drying stroke is controlled based on the temperature of the air discharged from the drum, it is possible to increase the accuracy of predicting the dryness of the dry item, thereby preventing damage to the dry item and energy loss due to overdrying.

1 and 2 are a perspective view showing a dryer according to an embodiment of the present invention,
3 is a block diagram for explaining the configuration of a dryer according to an embodiment of the present invention;
4 is a view for explaining the configuration of a dryer according to an embodiment of the present invention;
5 to 9 are views for explaining a drying method according to various embodiments of the present invention, and
10 is a flowchart illustrating a drying method according to an embodiment of the present invention.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

The terms used in the present disclosure selected general terms widely used as far as possible in consideration of functions in the present disclosure, but may vary according to the intention or precedent of a person skilled in the art, the emergence of new technologies, and the like. In addition, in certain cases, there is also a term arbitrarily selected by the applicant, in which case the meaning will be described in detail in the description of the invention. Therefore, the terms used in the present disclosure should be defined based on the meanings of the terms and the contents throughout the present disclosure, rather than simply the names of the terms.

When any part of the specification is to "include" any component, this means that it may further include other components, except to exclude other components unless otherwise stated. In addition, the terms "... unit", "module", etc. described in the specification mean a unit for processing at least one function or operation, which may be implemented in hardware or software or a combination of hardware and software. .

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments described below will be described based on the embodiments best suited for understanding the technical features of the present invention, and the technical features of the present invention are not limited by the embodiments described below. Illustrates that the present invention can be implemented as in the embodiments.

Accordingly, the present invention may be modified in various ways within the technical scope of the present invention through the embodiments described below, and such modified embodiments fall within the technical scope of the present invention. And in order to help the understanding of the embodiments described below, in the reference numerals described in the accompanying drawings, among the components having the same function in each embodiment, the related components are denoted by the same or extension number. In addition, the accompanying drawings may be exaggerated in some of the dimensions of the components rather than being drawn to scale to facilitate understanding of the invention.

1 is a perspective view showing a dryer according to an embodiment of the present invention.

The dryer 100 (or the clothes dryer) described below is a device that performs drying of a dry matter by supplying hot dry hot air to a drying chamber in which the dry matter is stored, and the dry matter is any object that can be dried and sterilized through hot air. It includes. For example, the object to be dried includes those implemented with various kinds of fibers, fabrics such as cloth, clothing, towels, duvets, and the like, without limitation.

As shown in FIG. 1, the dryer 100 includes a main body 10 forming an appearance. The main body 10 may have a shape of a rectangular parallelepiped extending in the vertical direction. However, this is an example for convenience of description and the main body 10 may be implemented in various shapes.

The main body 10 may include a front panel 11, a top panel 12, and a side rear panel 13.

The main body 10 includes an opening 10H (see FIG. 2) formed at one side, and the opening 10H may be formed in the front panel 11 to open toward the front of the main body 10. In this case, the door 14 may be coupled to the main body 10 to open and close the opening 10H.

In addition, the control panel 15 may be disposed on the top of the front panel 11.

The control panel 15 includes an operation unit 15-1 for inputting an operation command for operating the dryer 100 and a display unit 15-2 for displaying operation information of the clothes dryer 100.

In this case, the user may input various user commands for the operation of the dryer 100 through the operation unit 15-1. To this end, the operation unit 15-1 may include a button, an operation dial, and the like.

For example, the user can select a desired course (or stroke) through a button or an operation dial provided on the operation unit 15-1.

The display unit 15-2 may display operation information of the dryer 100 as a visual image. In this case, the display unit 15-2 may be configured as a touch screen for receiving a user's manipulation command.

FIG. 2 is a perspective view illustrating an open state of the door 14 of the dryer 100 illustrated in FIG. 1.

As shown in FIG. 2, an opening 10H is formed at one side of the main body 10, and the opening 10H may be formed in a circular shape on the front panel 11.

The drum 110 is rotatably disposed inside the main body 10, and the drum 110 may be connected to the opening 10H to allow the dry object to be introduced into the inside of the main body 10 through the opening 10H.

Specifically, the drum 110 has a drying chamber (not shown) connected to the opening 10H, and the dry matter introduced into the drying chamber (not shown) through the opening 10H is caused by hot air flowing into the drying chamber (not shown). Can be dried.

On the other hand, the inside of the main body 10 is provided with a motor (not shown), the drum 110 may be rotated in accordance with the rotation of the motor (not shown). Through this, the dry matter input to the drying chamber (not shown) may be tumbled, and hot air may be uniformly applied to the dry matter.

In addition, the door 14 is coupled to the front panel 11 of the main body 10 to open and close the opening 10H.

The door 14 is pivotally coupled to the front panel 11 to open and close the opening 10H.

Specifically, as shown in FIG. 2, a hinge 14-1 may be disposed at one side of the front panel 11 adjacent to the opening 10H, and the door 14 is connected to the hinge 14-1. The opening 10H can be opened and closed by rotating about the hinge 14-1.

The door 14 may have a circular shape corresponding to the shape of the opening 10H, and is larger in diameter than the opening 10H. Therefore, the object to be dried can be introduced into the drying chamber (not shown) of the drum 110 through the opening 10H by the door 14 being opened.

3 is a block diagram illustrating a configuration of a dryer according to an embodiment of the present invention.

Referring to FIG. 3, the dryer 100 may include a drum 110, a first sensor 120, a second sensor 130, a heating unit 140, a blowing unit 150, and a processor 160. have.

The drum 110 accommodates a dry item. To this end, the drum 110 has a drying chamber (not shown) for accommodating the dry matter, which may be dried by air flowing into the drying chamber (not shown).

In this case, the drum 110 is rotatably disposed, and the to-be-inserted object into the drying chamber (not shown) may be tumbled according to the rotation of the drum 110 so that air is uniformly applied to the to-be-dried object.

The first sensor 120 senses a dry state of the dry item accommodated in the drum 110. That is, the first sensor 120 is provided inside the drum 110 to sense a dry state of the object to be dried. To this end, the first sensor 120 may include a dryness detection sensor.

In this case, the dryness detection sensor includes two electrodes provided inside the drum 110, and when the dry object between the two electrodes is disposed, the dry object is dried based on the magnitude of the current flowing between the two electrodes. A state may be sensed, and a value representing a dry state, that is, sensing data (eg, a pulse value) may be generated. For example, the higher the water content of the dry matter disposed between the two electrodes, the better the current flows between the two electrodes, and the lower the water content of the dry matter disposed between the two electrodes, the more between the two electrodes. Since the current does not flow well, the dryness sensor may generate low sensing data as the dry item is dried, and generate high sensing data as the dry item is wet.

However, this is only an example, and the first sensor 120 may be implemented as various types of sensors for measuring the dryness of the object to be dried.

The second sensor 130 senses the temperature of the air discharged from the drum 110. To this end, the second sensor 130 may include a temperature sensor. In this case, the temperature sensor may be disposed in the filter 49 of FIG. 4 to sense the temperature of the air discharged from the drum 110 and generate a value representing the temperature of the air, that is, sensing data.

However, this is only an example, and the temperature sensor may sense the temperature of the drum 110 at various locations.

The heating unit 140 heats the air supplied into the drum 110.

In this case, the heating unit 140 may heat the air supplied into the drum 110 through various methods.

For example, the heating unit 140 includes a compressor (46 in FIG. 4) for cooling and heating air that is connected to the flow path and circulates in the flow path, and into the drum 110 through the compressor (46 in FIG. 4). The air supplied can be heated.

The blowing unit 150 may form a flow of air passing through the drum 110. In this case, the blower 150 may include a fan (41 in FIG. 4) for generating a flow of air according to the rotation.

The processor 160 controls the overall operation of the dryer 100.

In detail, the processor 160 may control the rotational speed of the drum 110, the rotational direction, the temperature of the air discharged from the drum 110, and the rotational speed of the fan.

To this end, the processor 160 may be connected to various components included in the dryer 100 to transmit and receive various data and signals. In addition, the processor 160 may generate and transmit a control command to control various components included in the dryer 100.

In this case, the processor 160 may control, for example, hardware or software components connected to the processor 160 by operating an operating system or an application program, and may perform various data processing and operations. In addition, the processor 160 may load and process instructions or data received from at least one of the other components into the volatile memory, and store various data in the nonvolatile memory.

To this end, the processor 160 may execute a dedicated processor (eg, an embedded processor) or one or more software programs stored in a memory device to perform the corresponding operations, thereby performing a generic operation. (Eg, CPU, GPU, or application processor).

In particular, the processor 160 may control the rotation direction of the drum 110 in the drying stroke performed according to the futon drying course, and also control the end of the drying stroke based on the temperature discharged from the drum 110. have.

Hereinafter, according to various embodiments of the present disclosure, a process performed by the dryer 100 in a futon drying course will be described in more detail.

According to various embodiments of the present disclosure, the dryer 100 may be implemented as a heat pump dryer. Referring to FIG. 4, when the dryer 100 is implemented as a heat pump dryer, a configuration of the dryer 100 will be described. Do it.

4 is a view for explaining the configuration of a dryer according to an embodiment of the present invention.

The fan 41 generates a flow of air as it rotates. In this case, the fan 41 is driven by an inverter motor (or a motor) (not shown), and the rotation speed and the rotation direction of the fan 41 may be changed under the control of the inverter motor (not shown).

On the other hand, as the fan 41 rotates, air is circulated through the flow path 42, so that air may be introduced into and discharged from the drum 110.

In this case, in order to dry the dry matter accommodated in the drum 110, the air discharged from the drum 110 may be introduced into the drum 110 again through a condensation and heating process.

That is, the flow passage 42 is a circulation passage of air discharged from the drum 110 and introduced into the drum 110, and the fan 41 flows air into the drum 110 through rotation, and thus the flow passage 42. Can circulate air.

Meanwhile, the dryer 100 may include a heat pump system 43 for condensing and heating air through a refrigerant.

In this case, the refrigerant circulates through the refrigerant pipe 47 in the order of the EVA 45, the compressor 46, the cond 44, and the expansion means 48.

Specifically, the refrigerant in the EVA 45 absorbs heat and evaporates. Accordingly, the EVA 45 condenses moisture by cooling the circulating air through heat exchange between the refrigerant and the air circulated. In this case, the condensed water may be discharged to the outside of the dryer 100 through a pipe (not shown).

On the other hand, the compressor 46 compresses the refrigerant flowing from the EVA 45 and discharges it to the Cond 44.

In this case, the compressor 46 is driven by an inverter motor (not shown), and the rotational speed of the compressor 46 may vary according to the control of the inverter motor (not shown). That is, the operating frequency (or driving frequency) of the compressor 46 may vary. Alternatively, the compressor 46 may be driven by a constant speed motor (not shown), and may be driven to have a constant operating frequency under the control of the constant speed motor (not shown).

At cond 44 the refrigerant releases heat to condense. Thus, the Cond 44 heats the circulating air through heat exchange between the refrigerant and the circulating air.

The expansion means 48 expands the refrigerant flowing from the cond 44 and discharges it to the EVA 45.

As such, the condensation process and the heating process of the circulating air are performed through the heat pump system 43, and the circulating air is introduced into the drum 110 again.

Specifically, the high temperature and low humidity air heated by the cond 44 becomes air of high temperature and high humidity while passing through the dry matter in the drum 110, and the low temperature and low humidity air is dehumidified while passing through the EVA 45. It is heated by the air of high temperature and low humidity by the cond 44 and flows into the drum 110.

On the other hand, between the drum 110 and the EVA 45 may be provided with a filter 49 for removing foreign matter, such as lint in the air.

As such, the dryer 100 may be implemented as a heat pump dryer, and may dry the dried object through the components as illustrated in FIG. 4.

On the other hand, in the following, when the dryer 110 includes the configuration as shown in FIG. 4, a method of performing a futon drying course will be described in detail with reference to FIG. 5.

First, referring to FIG. 5, when a user input for selecting a specific course is received, the processor 160 may control the drum 110, the heating unit 140, and the blowing unit 150 to perform a drying stroke. .

Here, the particular course may include a futon drying course for drying the futon. In this case, a user input for selecting a futon drying course may be input through an operation unit (15-1 of FIG. 1) provided in the dryer 100. For example, the user can select a button provided on the operation unit 15-1 or select a futon drying course by rotating the operation dial provided on the operation unit 15-1.

On the other hand, the processor 160 may proceed with the pre-process before performing the drying stroke (S510).

In detail, the processor 160 may drive the fan 41 and the drum 110, and may drive the compressor 46 after a specific time elapses.

In this case, the processor 160 may drive the fan 41 and the drum 110 at a predetermined speed, and may drive the compressor 46 at a predetermined operating frequency.

For example, when the compressor 46 is driven by an inverter motor (not shown), the processor 160 gradually increases the operating frequency for a predetermined time after driving the compressor 46 and increases the operating frequency for the predetermined time. And then gradually increase the operating frequency of the compressor 46 until the target operating frequency is reached.

In this manner, the processor 160 may perform a pre-process to quickly reach a temperature that targets the temperature inside the drum 110 before proceeding with the drying stroke, thereby increasing the efficiency of drying.

As another example, when the compressor 46 is driven by a constant speed motor (not shown), the processor 160 may drive the compressor 46 at a constant operating frequency.

On the other hand, when the pre-process is completed, the processor 160 may perform a drying stroke (S515).

Here, the drying stroke may mean a stroke for drying the dry matter accommodated in the drum 110.

In detail, when the drying stroke is started, the processor 160 drives the compressor 46 at a predetermined operating frequency, drives the fan 41 at a predetermined rotation speed, and drives the drum 110 at a predetermined rotation speed. I can drive it. In this case, the processor 160 may rotate the drum 110 in a first direction (eg, in a clockwise direction).

Accordingly, in the drying stroke, the high temperature and low humidity air generated by the compressor 46 while the drum 110 rotates is supplied into the drum 110 by the fan 41, and the drum 110 is supplied into the drum 110. The dry matter contained in the drum 110 may be dried by the air.

After the drying stroke is started, the processor 160 may control the rotation direction of the drum 110 based on the dry state of the dry object detected by the first sensor 120. In detail, the processor 160 may change the rotation direction of the drum 110 based on the dry state of the dry object detected by the first sensor 110.

In this case, first, the processor 160 may determine whether a specific time has elapsed since the start of the drying process (SS520). That is, the processor 160 may determine whether the time for performing the drying stroke is equal to or less than a predetermined value (T ₁ minute, for example, 357 minutes).

In this case, when a specific time has elapsed since the start of the drying stroke (S520-N), the processor 160 may terminate the drying stroke and perform the cooling process (S555).

However, when a specific time has not elapsed since the start of the drying stroke (S520-Y), the processor 160 determines whether a value indicating a dry state of the dried object sensed by the first sensor 120 is a preset value. It may be (S525).

In detail, the processor 160 may determine whether the sensing data sensed by the first sensor 120, for example, a pulse value is less than or equal to a predetermined value S ₁ . Herein, the predetermined value S ₁ may be 0 or a value close to zero.

In this case, when the value indicating the dry state of the dry object sensed by the first sensor 120 is not lower than or equal to a predetermined value (S525-N), the processor 160 may determine the first sensor in the drying stroke process (S515). It may be repeatedly determined whether the value sensed at 120 is a preset value.

The processor 160 may change the rotation direction of the drum 110 when a value indicating a dry state of the dry object sensed by the first sensor 120 is equal to or less than a predetermined value. That is, when the pulse value is less than or equal to the predetermined value S ₁ , the processor 160 may change the rotation direction of the drum 110.

In detail, since the drum 110 is rotating in the first direction during the drying process, the processor 160 may change the rotation direction of the drum 110 in the second direction (eg, counterclockwise direction). In addition, the processor 160 may rotate the drum 110 in a second direction opposite to the first direction for a predetermined time t ₁ second (eg, 10 seconds) (S530).

In this case, the processor 160 may maintain the operating frequency of the compressor 46, the rotational speed of the fan 41, and the rotational speed of the drum 110 the same as in the drying stroke.

Thereafter, when a predetermined time (t ₁ second) has elapsed, the processor 160 may again perform a drying process (S535).

That is, the processor 160 drives the compressor 46 at a preset operating frequency, drives the fan 41 at a predetermined rotation speed, changes the rotation direction of the drum 110 back to the first direction, and The drum 110 may be driven in the first direction at a set rotation speed.

Thereafter, the processor 160 may determine whether a value representing a dry state of the dry object sensed by the first sensor 110 is a preset value (S540).

In detail, the processor 160 may determine whether the sensing data sensed by the first sensor 120, for example, a pulse value is less than or equal to a predetermined value S ₁ . Herein, the predetermined value S ₁ may be 0 or a value close to zero.

In this case, when the value indicating the dry state of the dry object sensed by the first sensor 120 is not less than or equal to a predetermined value (S540-N), the processor 160 may determine the first sensor in the drying process S535. It may be repeatedly determined whether the value sensed at 120 is equal to or less than a predetermined value.

On the other hand, if the value indicating the dry state of the dried object sensed by the first sensor 120 is less than or equal to the preset value, the processor 160 may further perform the drying stroke based on the elapsed time from the start of the drying stroke. You can decide the time.

To this end, the processor 160 may determine the elapsed time from the time when the drying stroke is started.

Specifically, the processor 160 changes the rotational direction of the drum 110 once from the time when the pre-process is finished and the drying stroke is first started (that is, when the drying stroke is started in step S515), and then returns to the original state. After that, the elapsed time until the point at which the value sensed by the first sensor 120 becomes the preset value (that is, the point at which the pulse value corresponding to the predetermined value S ₁ or less is sensed in step S540) is determined. Can be.

In addition, the processor 160 may further determine a time for performing the drying stroke based on the elapsed time.

In this case, the processor 160 may determine the time for additionally performing the drying stroke by using the elapsed time and the information stored in the memory (not shown) of the dryer 100.

Here, the information stored in the memory (not shown) indicates how much additional time the drying stroke is to be performed according to the measured elapsed time, for example, as shown in Table 1 below. This is for optimal drying of the dry matter, which may be an experimentally measured value.

Measured elapsed time (T) Additional drying time T≤8 minutes 110 minutes-measured elapsed time (T) 8 minutes <T≤15 minutes 140 minutes-measured elapsed time (T) 15 minutes <T≤20 minutes 170 minutes-measured elapsed time (T) 20 minutes <T≤25 minutes 200 minutes-measured elapsed time (T) 25 minutes <T 230 minutes-measured elapsed time (T)

For example, in Table 1, processor 160 can determine 148 minutes (= 170 minutes-22 minutes) as the time to perform a dry stroke if the elapsed time is 22 minutes (ie, T = 22 minutes). have.

Thereafter, the processor 160 may further perform a drying stroke for the determined time (S545).

In this case, the processor 160 may additionally display the time to perform the drying stroke on the display unit 15-2.

In the above example, when it is determined that the time for additionally performing the drying stroke is 148 minutes, the processor 160 may display text such as “148 minutes remaining” on the display unit 15-2.

Meanwhile, the processor 160 may rotate the drum 110 in the second direction for a predetermined time (t ₁ second) at a specific time (T ₂ minutes) in a drying stroke that is additionally performed (S545).

That is, when performing the drying stroke, the processor 160 drives the compressor 46 at a predetermined operating frequency, drives the fan 41 at a predetermined rotational speed, and drives the drum 110 at the predetermined rotational speed. I can drive it. In this case, the processor 160 may rotate the drum 110 in the first direction.

In this case, the processor 160 may rotate the drum 110 in the second direction by t ₁ second (eg, 10 seconds) every T ₂ minutes (eg, 10 minutes) while the drying stroke is performed.

That is, the processor 160 changes the rotation direction of the drum 110 rotating in the first direction to the second direction when T ₂ minutes elapses after the drying stroke starts, and changes the drum 110 in the second direction to t. _After rotating for ₁ second, when t ₁ second elapses, the rotation direction of the drum 110 may be changed again in the first direction, and the drum 110 may be rotated in the first direction. Thereafter, when T ₂ minutes elapses again, the processor 160 changes the rotation direction of the drum 110 rotating in the first direction to the second direction, and rotates the drum 110 in the second direction for t ₁ second. After t _{1 s} , the process of changing the rotation direction of the drum 110 to the first direction may be repeatedly performed.

Meanwhile, the processor 160 may determine whether the temperature of the air inside the drum 110 reaches a preset target temperature based on the temperature sensed by the second sensor 130 during the drying stroke.

That is, the temperature of the air inside the drum 110 is gradually increased by the high temperature and low humidity air generated by the compressor 46 while the drying stroke is performed, and thus, the temperature sensed by the second sensor 130. It will also increase gradually.

Accordingly, when the temperature sensed by the second sensor 130 reaches a preset value, the processor 160 may determine that the temperature of the air inside the drum 110 reaches the preset target temperature.

In this case, when the temperature sensed by the second sensor 130 is a preset first temperature, the processor 160 may turn off the driving compressor 46. For example, when the temperature sensed by the second sensor 130 is gradually increased to 57 ° C., the processor 160 may turn off the compressor 46.

On the other hand, when the driving of the compressor 46 is stopped, the temperature of the air inside the drum 110 is gradually reduced, and thus, the temperature sensed by the second sensor 130 is also gradually reduced.

In this case, when the temperature sensed by the second sensor 130 is a preset second temperature, the processor 160 may turn on the compressor 46 that is turned off. For example, when the temperature sensed by the second sensor 130 gradually decreases to 56 ° C., the processor 160 may turn on the compressor 46 in the off state again.

As such, the processor 160 may control the on / off of the compressor 46 based on the temperature sensed by the second sensor 130 to perform a drying stroke.

Thereafter, when the drying time set for the additionally performed drying stroke elapses (S550-Y), the processor 160 may end the drying stroke (S555). That is, the processor 160 may perform a drying stroke for a set drying time and end the drying stroke.

In operation S555, the processor 160 may perform a cooling process.

In detail, the processor 160 may stop the driving of the compressor 460 and increase the rotation speed of the fan 41. This is to increase the air volume by the fan 41 to lower the temperature in the drum 110 in a short time.

Thereafter, when the temperature sensed by the second sensor 130 reaches a preset temperature, the processor 160 may end the cooling process.

That is, as the fan 41 is driven, the temperature inside the drum 110 is gradually decreased, and thus the temperature value indicated by the data sensed by the second sensor 130 is gradually decreased.

Accordingly, when the temperature sensed by the second sensor 130 gradually decreases to a preset temperature, the processor 160 stops the driving of the fan 41, the drum 110, and the like to terminate the cooling process. Can be.

On the other hand, as described above in the present invention, while changing the rotation direction of the drum 110 during the drying stroke for the object to be dried, and then determine the time to perform an additional drying stroke, the reason is as follows. .

For example, a pulse value sensed by the first sensor 120, for example, a dryness sensor corresponds to 0 or less (or a value close to zero), indicating that a part of a dry item or a dry part contacting the dryness sensor is dried. Means that.

On the other hand, in the case of a blanket, because the volume is large, when the drum 110 rotates in one direction, the drum 110 while the folded state or the dried state is kept constant with little free fall motion or position change inside the drum 110. Rotate with 110. Accordingly, the part where the blanket is in direct contact with the dryness detection sensor is also limited, so that the value sensed by the dryness detection sensor is not dried on the entire blanket, but is dried on a part of the surface of the blanket which is rapidly dried by exposure to hot air. It can be seen as indicating the state.

Therefore, if it is determined that the time to perform the drying stroke based on such a dry state, the folded inner surface of the quilt is not dried, but the drying stroke is terminated and the drying must be repeated repeatedly, which may cause inconvenience to the user. Can be.

Accordingly, in the present invention, by changing the position of the load, that is, the position of the object to the maximum within the drum 110 through the reverse rotation of the drum 110, to measure a more accurate drying state for the object to dry additionally accordingly In determining the time to perform the stroke, it becomes possible to dry the dry matter more effectively.

In addition, while the drying stroke is in progress, the direction of rotation of the drum 110 is periodically changed, so that the blanket can be dried as a whole.

On the other hand, in the case of a blanket, the time required for drying is different depending on the thickness and material or type and density of the filler, even if the same bed, the time required for drying depends on the difference in the initial moisture content according to the degree of dehydration.

For example, summer duvets are generally thinner than winter duvets and are made of a smaller amount of filler material, so that the time required for drying summer duvets is generally shorter than the time required for drying duvets for winter. In addition, duvets that are small in size or low in initial moisture content require relatively shorter drying times than duvets that are relatively large in size or high in initial moisture content.

Therefore, carrying out additional drying strokes uniformly without considering this point may damage the blankets due to overdrying, and is not preferable in terms of energy efficiency.

Accordingly, in the present invention, the additional drying stroke may be terminated according to the temperature of the air discharged from the drum 110 even before the time set for the additional drying stroke arrives.

Specifically, the processor 160 controls the on / off of the compressor 46 on the basis of the temperature sensed by the second sensor 130 in the drying stroke performed after the rotation direction of the drum 110 is controlled, The drying stroke can be finished based on the control state of the compressor 46.

Here, the drying stroke performed after the rotation direction of the drum 110 is controlled may be a drying stroke set to be performed for a time determined based on the elapsed time from the time when the drying stroke is started.

That is, as described above, in the present invention, the rotation direction of the drum 110 is changed during the drying stroke of the object to be dried, the time for the additional drying stroke is determined according to the measured elapsed time, and during the determined time. Further performing a drying stroke, where a drying stroke performed after the rotation direction of the drum 110 is controlled may mean a drying stroke that is additionally performed.

In this case, the processor 160 may terminate the drying stroke when the control state of the compressor 46 satisfies a specific condition (S550-Y) while the drying stroke is additionally performed (S555). In operation S560, the processor 160 may perform a cooling process.

Specifically, when the number of times the compressor 46 is turned off is a predetermined value, the processor 160 may end the drying stroke even before the determined time elapses.

That is, as described above, the processor 160 turns off the compressor 46 when the temperature detected by the second sensor 130 is the first predetermined temperature during the drying stroke. In this case, the processor 160 may count and store the number of times the compressor 46 is turned off.

Accordingly, when the number of times the compressor 46 is turned off is a preset value (for example, three times), the processor 160 may end the drying stroke even before the time set to perform the drying stroke has elapsed.

As in the above example, it is assumed that the time for further performing the drying stroke is set to 148 minutes. In this case, even if 148 minutes have not elapsed since the start of the further drying stroke, if the compressor 46 is turned off three times before that, the processor 160 may end the drying stroke without performing any further drying stroke.

That is, as described above, in the drying stroke, the temperature inside the drum 110 gradually increases as the compressor 46 is driven. When the temperature inside the drum 110 rises to a target temperature, When the compressor 46 is turned off and the temperature inside the drum 110 drops to a certain temperature, the compressor 46 is turned on again.

In this case, the high number of times the compressor 46 is turned off within a certain time means that the temperature inside the drum 110 rises rapidly from a specific temperature to a target temperature, which is related to the dry matter contained in the drum 110. It may mean that the drying has been done to some extent.

Therefore, continuously carrying out the drying stroke on the dry items to be dried may damage the dry items and is not preferable in terms of energy efficiency.

Accordingly, in the present invention, in order to reduce damage to the dry matter and increase the energy efficiency, the drying stroke is terminated even before the time set to perform the drying stroke for the dry matter determined to be completed to some extent. do.

 Meanwhile, in the above-described example, the drum 110 is reversely rotated once, but this is merely an example. That is, according to various embodiments of the present disclosure, the number of times the drum 110 is reversely rotated may be changed according to the dry state of the object, which will be described in more detail with reference to FIG. 6.

6 is a view for explaining a method of performing a drying stroke according to an embodiment of the present invention.

In FIG. 6, S610, S615, S625, S630, S635, S640, S645, S650, S655, and S660 are the same as S510, S515, S525, S530, S535, S540, S545, S550, S555, and S560 in FIG. 5. , The detailed description will be omitted. In addition, although FIG. 6 does not show a step (eg, S520 of FIG. 5) for determining whether a specific time has elapsed since the start of the drying stroke, such an operation may also be performed in FIG. 6.

Referring to FIG. 6, the processor 160 may determine whether a value representing a dry state of the dry object sensed by the first sensor 110 is equal to or less than a preset value (S640).

In detail, the processor 160 may determine whether the sensing data sensed by the first sensor 120, for example, a pulse value is less than or equal to a predetermined value S ₁ . Herein, the predetermined value S ₁ may be 0 or a value close to zero.

In this case, when the value indicating the dry state of the dry object sensed by the first sensor 120 is less than or equal to a preset value, the processor 160 rotates the drum 110 in reverse rotation from the time when the drum 110 is reversely rotated. Thereafter, the time taken until the value sensed by the first sensor 120 becomes the predetermined value may be determined, and it may be determined whether the determined time is less than or equal to the predetermined value (T ₃ minutes) (S670). In this case, the preset value (T ₃ minutes) may be, for example, 1 minute.

In this case, when the determined time is greater than the predetermined value (S670-N), the processor 160 reversely rotates the drum 110 again, performs a drying stroke, and a value sensed by the first sensor 120. It may be determined whether the value is equal to or less than the predetermined value.

However, when the determined time is less than or equal to the predetermined value (S670-Y), the processor 160 may perform an additional drying stroke (S645).

As such, the value indicating the dry state of the dried object within a short time after the drum 110 is reversely rotated may mean that the blanket is completely dried. According to one embodiment of the present invention, As shown in FIG. 6, the drum 110 may be reversely rotated until the blanket is completely dried, and then further drying strokes may be performed. In this case, the additionally performed drying stroke time may be smaller than the drying stroke time performed in FIG. 5.

Meanwhile, in the above example, when the number of times the compressor 46 is turned off reaches a predetermined value, the additional drying stroke is terminated, but this is merely an example. That is, according to various embodiments of the present disclosure, the number of times the compressor 46 is turned off and the temperature of the air inside the drum 110 for turning off the compressor 46 may be variously set according to the degree of drying and the drying temperature. This will be described in more detail with reference to FIGS. 7 and 8.

7 is a view for explaining a method of performing a drying stroke according to an embodiment of the present invention.

In FIG. 7, S710, S715, S725, S730, S735, S740, S745, S755, and S760 are the same as S510, S515, S525, S530, S535, S540, S545, S555, and S560 in FIG. 5. Omit it. In addition, although FIG. 7 does not show a step (eg, S520 of FIG. 5) for determining whether a specific time has elapsed since the start of the drying process, this operation may be performed in FIG. 7.

Referring to FIG. 7, the processor 160 may receive a user input for selecting a degree of drying (S705).

For example, the user can select a futon drying course, select a button provided on the operation unit 15-1, or select a degree of drying using the operation dial provided on the operation unit 15-1.

Here, the degree of drying may include a first level (eg, standard) and a second level (eg, strong) that is higher than the first level.

On the other hand, after starting the additional drying stroke, the processor 160 may determine whether the drying degree selected by the user corresponds to the first level (S770).

In this case, when the drying degree corresponds to the first level, the processor 160 determines whether the additional drying time is completed or whether the control state of the compressor 46 satisfies a specific first condition (S780). When the additional drying time is completed or the control state of the compressor 46 satisfies a specific first condition (S780-Y), the drying stroke may be terminated (S755).

Here, the specific first condition may include whether the number of times the compressor 46 is turned off reaches a preset value (eg, three times).

Meanwhile, when the degree of drying corresponds to the second level, the processor 160 determines whether the additional drying time is completed or whether the control state of the compressor 46 satisfies a specific first condition (S790). When this is completed or when the control state of the compressor 46 satisfies a specific second condition (S790-Y), the drying process can be ended (S755).

Here, the specific second condition may include whether the number of times the compressor 46 is turned off reaches a preset value (eg, five times).

As such, according to an embodiment of the present disclosure, the number of times the compressor 46 required for the end of the drying stroke is turned off may be set differently according to the level of the drying degree. That is, the higher the drying degree level, the more the number of times the compressor 46 is required for the end of the drying stroke can be set.

Accordingly, a more efficient drying stroke can be performed to meet the degree of drying required by the user.

8 is a view for explaining a method of performing a drying stroke according to an embodiment of the present invention.

In FIG. 8, S810, S815, S825, S830, S835, S840, S845, S855, and S860 are the same as S510, S515, S525, S530, S535, S540, S545, S555, and S560 in FIG. 5. Omit it. In addition, although FIG. 8 does not show a step (eg, S520 of FIG. 5) for determining whether a specific time has elapsed since the start of the drying stroke, such an operation may be performed in FIG. 8.

Referring to FIG. 8, the processor 160 may receive a user input for selecting a drying temperature in operation S805.

For example, the user can select a futon drying course, select a button provided on the operation unit 15-1, or select a drying temperature using an operation dial provided on the operation unit 15-1.

Here, the drying temperature may include a first temperature (eg, medium temperature) and a second temperature (eg, low temperature) having a drying temperature lower than the first level.

On the other hand, after starting the additional drying stroke, the processor 160 may determine whether the drying temperature selected by the user corresponds to the first temperature (S870).

In this case, when the drying temperature is the first temperature, the processor 160 determines whether the additional drying time is completed or whether the control state of the compressor 46 satisfies a specific first condition (S880). When the time is completed or when the control state of the compressor 46 satisfies a specific first condition (S880-Y), the drying process may be terminated (S855).

Here, the specific first condition may include whether the number of times the compressor 46 is turned off reaches a preset value (eg, three times).

On the other hand, as the compressor 46 is driven during the drying stroke, the temperature of the air inside the drum 110 gradually increases. In this case, the processor 160 determines whether the temperature of the air inside the drum 110 reaches a preset target temperature based on the temperature sensed by the second sensor 130, and determines the temperature of the air inside the drum 110. When the predetermined target temperature is reached, the compressor 46 may be turned off.

In detail, when the temperature sensed by the second sensor 130 is a preset first temperature, the processor 160 may turn off the driving compressor 46. For example, when the temperature sensed by the second sensor 130 is gradually increased to 57 ° C., the processor 160 may turn off the compressor 46.

Meanwhile, when the driving of the compressor 46 is stopped, the temperature of the air in the drum 110 gradually decreases, and the temperature sensed by the second sensor 130 also gradually decreases.

In this case, if the temperature sensed by the second sensor 130 is a preset second temperature, the processor 160 may turn on the compressor 46 that is turned off. For example, when the temperature sensed by the second sensor 130 gradually decreases to 56 ° C., the processor 160 may turn on the compressor 46 in the off state again.

As such, when the drying temperature is selected as the first temperature, the temperatures used for the on / off control of the compressor 46 may be set to 57 ° C and 56 ° C.

Meanwhile, when the drying temperature is the second temperature, the processor 160 determines whether the additional drying time is completed or whether the control state of the compressor 46 satisfies a specific second condition (S890). When this is completed or when the control state of the compressor 46 satisfies a specific second condition (S890-Y), the drying process can be ended (S855).

Here, the specific second condition may correspond to whether the number of times the compressor 46 is turned off becomes a preset value (eg, seven times).

On the other hand, as the compressor 46 is driven during the drying stroke, the temperature of the air inside the drum 110 gradually increases. In this case, the processor 160 determines whether the temperature of the air inside the drum 110 reaches a preset target temperature based on the temperature sensed by the second sensor 130, and determines the temperature of the air inside the drum 110. When the predetermined target temperature is reached, the compressor 46 may be turned off.

In detail, when the temperature sensed by the second sensor 130 is a preset first temperature, the processor 160 may turn off the driving compressor 46. For example, when the temperature sensed by the second sensor 130 is gradually increased to 50 ° C., the processor 160 may turn off the compressor 46.

Meanwhile, when the driving of the compressor 46 is stopped, the temperature of the air in the drum 110 gradually decreases, and the temperature sensed by the second sensor 130 also gradually decreases.

In this case, if the temperature sensed by the second sensor 130 is a preset second temperature, the processor 160 may turn on the compressor 46 that is turned off. For example, when the temperature sensed by the second sensor 130 gradually decreases to 49 ° C., the processor 160 may turn on the compressor 46 in the off state again.

As such, when the drying temperature is selected as the second temperature, the temperatures used for the on / off control of the compressor 46 may be set to 50 ° C and 49 ° C.

As a result, according to one embodiment of the present invention, the number of times the compressor 46 is turned off and the temperature of the air inside the drum 110 for turning off the compressor 46 are determined according to the drying temperature. It can be set differently. That is, the lower the drying temperature, the more the number of times of turning off the compressor 46 required for the end of the drying stroke is set, and the lower the temperature of the air inside the drum 110 for turning off the compressor 46 is also set. Can be.

Accordingly, a more efficient drying stroke can be performed to meet the drying temperature required by the user.

Meanwhile, according to various embodiments of the present disclosure, the drying stroke may be performed in various ways according to the type of the dried object, which will be described in more detail with reference to FIG. 9.

9 is a view for explaining a method for performing a drying stroke according to an embodiment of the present invention.

Meanwhile, in FIG. 9, the pre-process, the drying stroke, the reverse rotation of the drum 110, the additional drying stroke, and the like are the same as those described with reference to FIG. 5, and thus detailed descriptions of overlapping portions will be omitted.

Referring to FIG. 9, the processor 160 may receive a user input for selecting a type of a dry object (S905).

Here, the type of the article may include a first type, a second type, and a third type. In this case, for example, the first type may include a duvet, the second type may include a pillow, cushions, and the third type may include clothing (paddings).

On the other hand, the user input for selecting the type of the dry object can be input via a button provided on the operation unit 15-1 or an operation dial provided on the operation unit 15-1.

For example, the user may select the first type by selecting the futon drying course, select the second type by selecting the cushion drying course, and select the third type by selecting the clothing drying course.

First, when the type of the article is selected as the first type (ie, a blanket), the processor 160 performs a pre-process and a drying stroke (S911, 912), and the pulse value sensed by the first sensor 120 is It may be determined whether it is less than or equal to the predetermined value S ₁ (S913). Here, the predetermined value S ₁ may be, for example, zero or a value close to zero.

In addition, when the pulse value sensed by the first sensor 120 is equal to or less than the preset value S ₁ (S913 -Y), the processor 160 may output the drum 110 for t ₁ second (eg, 10 seconds). ) And reverse rotation (S914), it is possible to perform a drying stroke again (S915).

The processor 160 may determine whether a pulse value sensed by the first sensor 120 is equal to or less than a predetermined value S ₁ (S916). Here, the predetermined value S ₁ may be, for example, zero or a value close to zero.

Thereafter, when the pulse value sensed by the first sensor 120 is equal to or less than the predetermined value S ₁ , the processor 160 further determines a time to perform a drying stroke, and during the determined time, determines an additional drying stroke. It may be performed (S940). In this case, the processor 160 may reversely rotate the drum 110 for a predetermined time (t ₁ second) every specific time (T ₂ minutes) during the drying stroke.

On the other hand, if the time set to further perform the drying stroke has elapsed or if the control state of the compressor 46 satisfies a specific condition (S950-Y), the processor 160 ends the drying stroke (S970). , The cooling process may proceed (S980).

Here, the specific condition may include a condition in which the compressor 46 is terminated by a predetermined number of times. For example, processor 160 may terminate the drying stroke if compressor 46 is turned off three times during the further drying stroke.

On the other hand, when the type of the object to be selected as the second type (eg, pillows, cushions), the processor 160 performs the pre-process and drying stroke (S921, 922), the sensor sensed by the first sensor 120 It may be determined whether the pulse value is equal to or less than the preset value S ₂ (S923). Herein, the predetermined value S ₂ may be, for example, a value close to 5 or 5.

When the pulse value sensed by the first sensor 120 is less than or equal to the predetermined value S ₂ (S923-Y), the processor 160 reverses the drum 110 for t ₁ second (eg, 10 seconds). It is rotated (S924), it is possible to perform a drying stroke again (S925).

In addition, the processor 160 may determine whether the pulse value sensed by the first sensor 120 is equal to or less than a predetermined value S ₂ (S926). Herein, the predetermined value S ₂ may be, for example, a value close to 5 or 5.

Thereafter, when the pulse value sensed by the first sensor 120 is equal to or less than the preset value S ₂ , the processor 160 further determines a time to perform a drying stroke, and performs an additional drying stroke for the determined time. It may be (S945). In this case, the processor 160 may reverse-rotate the drum 110 for a predetermined time (t ₁ second) (eg, 10 seconds) every specific time period (T ₂ minutes) (eg, 10 minutes) during the drying stroke. .

On the other hand, if the additional time set to perform the drying stroke elapses (S960-Y), the processor 160 may end the drying stroke (S970) and proceed with the cooling process (S980).

On the other hand, if the type of the article to be selected as the third type (eg, clothing (paddings)), the processor 160 performs the pre-process and drying stroke (S931, 932), the sensing by the first sensor 120 It may be determined whether the predetermined pulse value is equal to or less than the preset value S ₃ (S933). Here, the predetermined value S ₃ may be, for example, a value of 10 or close to 10.

When the pulse value sensed by the first sensor 120 is less than or equal to the predetermined value S ₃ (S933-Y), the processor 160 reverses the drum 110 for t ₁ second (for example, 10 seconds). It is rotated (S934), it is possible to perform a drying stroke again (S935).

The processor 160 may determine whether a pulse value sensed by the first sensor 120 is equal to or less than a predetermined value S ₃ (S936). Here, the predetermined value S ₃ may be, for example, a value of 10 or close to 10.

Thereafter, when the pulse value sensed by the first sensor 120 is equal to or less than the predetermined value S ₃ , the processor 160 further determines a time to perform a drying stroke, and performs an additional drying stroke for the determined time. It may be (S945). In this case, the processor 160 may reverse-rotate the drum 110 for a predetermined time (t ₁ second) (eg, 10 seconds) every specific time period (T ₂ minutes) (eg, 10 minutes) during the drying stroke. .

On the other hand, if the additional time set to perform the drying stroke elapses (S960-Y), the processor 160 may end the drying stroke (S970) and proceed with the cooling process (S980).

Meanwhile, the processor 160 may determine a time for additionally performing a drying stroke for each type of drying target. In this case, the processor 160 may be stored in an elapsed time and a memory (not shown) from the time when the drying stroke is started. The information can be used to determine the time for additional drying runs.

Here, the information stored in the memory (not shown) indicates how much additional time the drying stroke is to be performed according to the measured elapsed time, for example, as shown in Table 2 below. This is for optimal drying of the dry matter, which may be an experimentally measured value.

Measured elapsed time (T) Comforter extra drying time Extra drying time for pillows and cushions Padded clothing add drying time T≤8 minutes 110 minutes-measured elapsed time (T) 60 minutes-measured elapsed time (T) 40 minutes-measured elapsed time (T) 8 minutes <T≤15 minutes 140 minutes-measured elapsed time (T) 75 minutes-measured elapsed time (T) 50 minutes-measured elapsed time (T) 15 minutes <T≤20 minutes 170 minutes-measured elapsed time (T) 90 minutes-measured elapsed time (T) 60 minutes-measured elapsed time (T) 20 minutes <T≤25 minutes 200 minutes-measured elapsed time (T) 105 minutes-measured elapsed time (T) 70 minutes-measured elapsed time (T) 25 minutes <T 230 minutes-measured elapsed time (T) 120 minutes-measured elapsed time (T) 80 minutes-measured elapsed time (T)

As such, according to an exemplary embodiment of the present disclosure, a time point at which the drum 110 is reversely rotated may be changed according to the type of the dry object. That is, in terms of the thickness of the material to be dried, the material, the filling material, etc. vary depending on the type, in consideration of this point padding clothes → pillows, cushions → bedding in reverse in the state that the drying proceeds relatively much in the order of reverse Can be rotated. However, in this case, the time for the additional drying stroke may also be set relatively long in the order of padded clothing → pillows, cushions → duvets.

This makes it possible to carry out a more efficient drying stroke depending on the type of the object to be dried.

10 is a flowchart illustrating a drying method of a dryer according to an embodiment of the present invention.

Here, the dryer may include a drum in which the object to be dried is accommodated, a first sensor that senses a dry state of the dry item accommodated in the drum, and a second sensor that senses a temperature of air discharged from the drum.

First, when a user input for selecting a specific course is received, a drying process is performed (S1010).

Then, the rotation direction of the drum is controlled based on the dry state of the dried object sensed by the first sensor after the drying stroke is started (S1020).

Then, the end of the drying stroke is controlled based on the temperature of the air sensed by the second sensor (S1030).

Specifically, step S1020 may change the rotation direction of the drum based on the dry state of the dry object sensed by the first sensor. That is, in step S1020, if the drum is rotated in the first direction in the drying stroke, and the value representing the dry state of the dry object sensed by the first sensor is equal to or less than the predetermined value, the second direction opposite to the first direction for a predetermined time. You can rotate the drum. In this case, when a predetermined time elapses, the drying stroke can be performed again.

On the other hand, after the drying stroke is performed again, if the value indicating the dry state of the dried object sensed by the first sensor is equal to or less than the preset value, the drying stroke may be further performed based on the elapsed time from the start of the drying stroke. The time can be determined and further drying strokes can be carried out for the determined time.

In this case, in the additionally performed drying stroke, the drum may be rotated in the second direction for a predetermined time at a specific time period.

On the other hand, the dryer may further include a compressor for heating the air supplied into the drum.

In this case, in the drying stroke performed after the rotation direction of the drum is controlled, the on / off of the compressor is controlled based on the temperature sensed by the second sensor, and the end of the drying stroke is controlled based on the control state of the compressor. Can be.

Here, the drying stroke performed after the rotational direction of the drum is controlled may be set to be performed for a time determined based on the elapsed time from the start of the drying stroke.

In operation S1030, if the number of times the compressor is turned off is a preset value, the drying stroke may be terminated even before the determined time elapses.

In this case, when the temperature sensed by the second sensor is the first preset temperature, the compressor being driven may be turned off. If the temperature sensed by the second sensor is the second preset temperature after the compressor is turned off, the compressor that is turned off may be turned on. have.

The drying method of such a dryer was specifically mentioned above.

A non-transitory computer readable medium may be provided in which a program for sequentially performing a drying method according to the present invention is stored.

A non-transitory readable medium refers to a medium that stores data semi-permanently and is read by a device, not a medium storing data for a short time such as a register, a cache, a memory, and the like. Specifically, the various applications or programs described above may be stored and provided in a non-transitory readable medium such as a CD, a DVD, a hard disk, a Blu-ray disk, a USB, a memory card, a ROM, or the like.

In addition, although the bus is not shown in the above-described block diagram of the dryer, the communication between the respective components in the dryer may be made through a bus. In addition, the dryer may further include a processor such as a CPU, a microprocessor, and the like that perform the various steps described above.

In addition, although the preferred embodiment of the present invention has been shown and described above, the present invention is not limited to the above-described specific embodiment, the technical field to which the invention belongs without departing from the spirit of the invention claimed in the claims. Of course, various modifications can be made by those skilled in the art, and these modifications should not be individually understood from the technical spirit or the prospect of the present invention.

100: dryer 110: drum
120: first sensor 130: second sensor
140: heating section 150: blowing section
160: Processor

Claims (20)

In the dryer,
A drum in which a dry item is accommodated;
A first sensor configured to sense a dry state of the dry item accommodated in the drum;
A heating unit for heating the air supplied into the drum;
A blowing unit including a fan to form a flow of air passing through the drum;
A second sensor for sensing a temperature of air discharged from the drum; And
When a user input for selecting a specific course is received, the drum, the heating unit, and the blower unit are controlled to perform a drying stroke, and based on the dry state of the dried object sensed by the first sensor after the drying stroke is started. And a processor that controls a rotation direction of the drum and controls an end of a drying stroke based on the temperature of the air sensed by the second sensor. The method of claim 1,
The processor,
And change the rotation direction of the drum based on the dry state of the dry object sensed by the first sensor. The method of claim 2,
The processor,
When the drum is rotated in a first direction in the drying stroke, and a value representing a dry state of the dry object sensed by the first sensor is equal to or less than a predetermined value, a second direction opposite to the first direction for a predetermined time. Rotating the drum to perform the drying stroke again when the predetermined time elapses. The method of claim 3,
The processor,
After the drying stroke is performed again, if the value indicating the dry state of the dried object sensed by the first sensor is equal to or less than the predetermined value, the drying stroke is further based on an elapsed time from when the drying stroke is started. Determining a time to perform and further performing the drying stroke for the determined time. The method of claim 4, wherein
The processor,
And in the drying stroke further carried out, the drum is rotated in the second direction for the predetermined time at a specific time period. The method of claim 1,
The heating unit,
And a compressor for heating air supplied into the drum. The method of claim 6,
The processor,
In the drying stroke performed after the rotation direction of the drum is controlled, the on / off of the compressor is controlled based on the temperature sensed by the second sensor, and the end of the drying stroke is based on the control state of the compressor. Controlled, dryer. The method of claim 7, wherein
The drying stroke performed after the rotation direction of the drum is controlled,
And be set to be carried out for a time determined based on the elapsed time from the start of the drying stroke. The method of claim 8,
The processor,
And when the number of times the compressor is turned off is a preset value, the drying stroke is terminated even before the determined time has elapsed. The method of claim 9,
The processor,
If the temperature sensed by the second sensor is a first predetermined temperature, the compressor is turned off. If the temperature sensed by the second sensor is a second predetermined temperature after the compressor is turned off, the compressor that is turned off is turned on. Letting, dryer. In the drying method of the dryer comprising a drum for receiving the object, a first sensor for sensing the dry state of the dry matter contained in the drum and a second sensor for sensing the temperature of the air discharged from the drum,
If a user input for selecting a specific course is received, performing a drying stroke;
Controlling a rotation direction of the drum based on a dry state of the dry object sensed by the first sensor after the drying stroke is started; And
And controlling the end of a drying stroke based on the temperature of the air sensed by the second sensor. The method of claim 11,
Controlling the rotation direction,
And a rotation direction of the drum is changed based on a dry state of the dry object sensed by the first sensor. The method of claim 12,
Controlling the rotation direction,
When the drum is rotated in a first direction in the drying stroke, and a value representing a dry state of the dry object sensed by the first sensor is equal to or less than a predetermined value, a second direction opposite to the first direction for a predetermined time. To rotate the drum,
The drying method,
And performing the drying stroke again after the predetermined time has elapsed. The method of claim 13,
After the drying stroke is performed again, if the value indicating the dry state of the dried object sensed by the first sensor is equal to or less than the predetermined value, the drying stroke is further based on an elapsed time from when the drying stroke is started. Determining a time to perform and further performing the drying stroke for the determined time. The method of claim 14,
Further performing the drying stroke,
And further comprising rotating the drum in the second direction for a predetermined time in the drying stroke carried out further. The method of claim 11,
The dryer,
And a compressor for heating the air supplied into the drum. The method of claim 16,
The step of controlling the end of the drying stroke,
In the drying stroke performed after the rotation direction of the drum is controlled, the on / off of the compressor is controlled based on the temperature sensed by the second sensor, and the end of the drying stroke is based on the control state of the compressor. To control, drying method. The method of claim 17,
The drying stroke performed after the rotation direction of the drum is controlled,
And be set to be carried out for a time determined based on the elapsed time from the time when the drying stroke is started. The method of claim 18,
The step of controlling the end of the drying stroke,
And when the number of times the compressor is turned off is a predetermined value, the drying stroke is terminated even before the determined time has elapsed. The method of claim 19,
If the temperature sensed by the second sensor is a first predetermined temperature, the compressor is turned off. If the temperature sensed by the second sensor is a second predetermined temperature after the compressor is turned off, the compressor that is turned off is turned on. Further comprising; drying method.

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