KR102615527B1 - Dryer and drying method thereof - Google Patents

Abstract

The dryer starts. This dryer includes a drum that accommodates the drying object, a first sensor that senses the drying state of the drying object contained in the drum, a heating unit that heats the air supplied into the drum, and a fan that creates a flow of air penetrating the inside of the drum. When a blowing unit including a second sensor that senses the temperature of the air discharged from the drum and a user input for selecting a specific course are received, the drum, heating unit, and blowing unit are controlled to perform a drying process, and after the drying process starts, It includes a processor that controls the rotation direction of the drum based on the drying state of the object sensed by the first sensor and controls the end of the drying cycle based on the temperature of the air sensed by the second sensor.

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 capable of drying an object to be dried and a drying method thereof.

In general, a dryer is a device that performs drying and sterilization by rotating a drum containing wet objects, such as clothes, and applying hot air to the objects for a certain period of time.

However, in this case, when drying a large object to be dried, the degree of drying of the object to be dried cannot be accurately determined because the object is rotated with the drum in a folded or rolled state, and thus, the drying degree is difficult. There was a problem with the time being calculated inaccurately.

Accordingly, there is a need to seek ways to more efficiently dry the items to be dried.

The present invention is in response to the above-described need, and the purpose of the present invention is to control the rotation direction of the drum based on the drying state of the dried object in the drying process and to terminate the drying process based on the temperature of the air discharged from the drum. To provide a controllable dryer and its drying method.

In order to achieve the above object, a dryer according to an embodiment of the present invention includes a drum in which an object to be dried is accommodated, a first sensor that senses the dry state of the object to be dried contained in the drum, and air supplied into the drum. When a heating unit for heating, a blower unit including a fan forming a flow of air passing through the inside of 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 are received, Controlling the drum, the heating unit, and the blowing unit to perform a drying process, controlling the rotation direction of the drum based on the dry state of the object to be dried sensed by the first sensor after the drying process starts, and controlling the rotation direction of the drum to perform a drying process. 2 It includes a processor that controls the end of the drying cycle based on the temperature of the air sensed by the sensor.

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

In addition, the processor rotates the drum in the first direction in the drying cycle, and when the value indicating the drying state of the object sensed by the first sensor is less than a preset value, the processor rotates the drum in the first direction for a certain period of time. The drum may be rotated in the opposite second direction, and the drying process may be performed again after the predetermined time has elapsed.

And, after the drying process is performed again, if the value indicating the drying state of the object sensed by the first sensor is less than or equal to the preset value, the processor performs the drying process based on the elapsed time from the start of the drying process. Thus, the time to perform the additional drying process can be determined, and the drying process can be additionally performed during the determined time.

Additionally, the processor may rotate the drum in the second direction for a certain period of time in a drying process that is additionally performed.

Meanwhile, the heating unit may include a compressor for heating air supplied into the drum.

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

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

Additionally, if the number of times the compressor has been turned off is a preset value, the processor may end the drying cycle even before the determined time has elapsed.

In addition, the processor turns off the compressor while the compressor is running when the temperature sensed by the second sensor is a preset first temperature, and turns off the compressor when the temperature sensed by the second sensor is a preset second temperature after the compressor is turned off. The compressor can be turned on.

On the other hand, according to an embodiment of the present invention, it includes a drum in which the drying object is accommodated, a first sensor that senses the dry state of the drying object accommodated in the drum, and a second sensor that senses the temperature of the air discharged from the drum. The drying method of the dryer includes performing a drying process when a user input for selecting a specific course is received, and rotating the drum based on the drying state of the object sensed by the first sensor after the drying process starts. and controlling the end of the drying cycle based on the temperature of the air sensed by the second sensor.

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

In addition, the step of controlling the rotation direction includes rotating the drum in a first direction in the drying cycle, and if the value representing the drying state of the object sensed by the first sensor is less than or equal to a preset value, the drum is rotated in the first direction for a certain period of time. The drum is rotated in a second direction opposite to the first direction, and the drying method may further include performing the drying process again when the predetermined time has elapsed.

In addition, in this drying method, after the drying process is performed again, if the value indicating the drying state of the object sensed by the first sensor is less than or equal to the preset value, the drying process is performed in the elapsed time from the start of the drying process. It may further include determining a time to perform an additional drying process based on the drying process, and further performing the drying process for the determined time.

Additionally, the additionally performing the drying process may further include rotating the drum in the second direction at a specific time period for the predetermined time in the additional drying process.

Meanwhile, the dryer may further include a compressor for heating air supplied into the drum.

Here, the step of controlling the end of the drying cycle includes controlling the on/off of the compressor based on the temperature sensed by the second sensor in the drying cycle performed after the rotation direction of the drum is controlled, and The end of the drying cycle can be controlled based on the control state of the compressor.

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

Also, in the step of controlling the end of the drying cycle, if the number of times the compressor has been turned off is a preset value, the drying cycle can be terminated even before the determined time has elapsed.

In addition, this drying method turns off the compressor in operation if the temperature sensed by the second sensor is a preset first temperature, and if the temperature sensed by the second sensor after the compressor is turned off is a preset second temperature The step of turning on the compressor that has been turned off may be further included.

According to the various embodiments of the present invention as described above, when performing a drying process, the rotation direction of the drum is changed to more accurately sense the drying state of the object to be dried, thereby preventing drying defects due to non-drying, In addition, in that the end of the drying process is controlled based on the temperature of the air discharged from the drum, the accuracy of predicting the dryness of the object to be dried is increased, thereby preventing damage to the object and energy loss due to overdrying.

1 and 2 are perspective views 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 diagram for explaining the configuration of a dryer according to an embodiment of the present invention;
5 to 9 are diagrams for explaining a drying method according to various embodiments of the present invention, and
Figure 10 is a flowchart for explaining 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 attached drawings.

The terms used in the present disclosure have selected general terms that are currently widely used as much as possible while considering the functions in the present disclosure, but this may vary depending on the intention or precedents of those skilled in the art, the emergence of new technologies, etc. In addition, in certain cases, there are terms arbitrarily selected by the applicant, and in this case, the meaning will be described in detail in the description of the relevant invention. Therefore, the terms used in this disclosure should be defined based on the meaning of the term and the overall content of this disclosure, rather than simply the name of the term.

When it is said that a part "includes" a certain element throughout the specification, this means that, unless specifically stated to the contrary, it does not exclude other elements but may further include other elements. In addition, terms such as "... unit" and "module" used in the specification refer to a unit that processes at least one function or operation, which may be implemented as hardware or software, or as a combination of hardware and software. .

Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. The embodiments described below will be explained based on the embodiments most suitable for understanding the technical features of the present invention, and the technical features of the present invention are not limited by the described embodiments. Examples illustrate that the present invention can be implemented.

Accordingly, the present invention can be implemented in various modifications within the technical scope of the present invention through the embodiments described below, and these modified embodiments will be considered to fall within the technical scope of the present invention. In order to facilitate understanding of the embodiments described below, in the symbols shown in the accompanying drawings, related components among components that perform the same function in each embodiment are indicated by numbers on the same or extended lines. Additionally, in order to facilitate understanding of the invention, the attached drawings are not drawn to scale and the dimensions of some components may be exaggerated.

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

The dryer 100 (or clothes dryer) described below is a device that performs drying of objects to be dried by supplying high-temperature dry hot air to a drying room containing the objects to be dried. The objects to be dried are all objects that can be dried and sterilized through hot air. Includes. For example, objects to be dried include things made of various types of fibers and fabrics, such as cloth, clothing, towels, blankets, etc., but there is no limitation.

As shown in FIG. 1, the dryer 100 includes a main body 10 that forms the exterior. The main body 10 may have the shape of a rectangular parallelepiped extending long in the vertical direction. However, this is an example for convenience of explanation, and of course, 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 side and rear panels 13.

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

Additionally, a control panel 15 may be placed on the top of the front panel 11.

The control panel 15 includes an operation unit 15-1 for inputting operating commands 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 can input various user commands for operating the dryer 100 through the control panel 15-1. To this end, the manipulation unit 15-1 may include buttons, manipulation dials, etc.

For example, the user can select the course (or stroke) he or she wants through a button or control dial provided on the control panel 15-1.

The display unit 15-2 can display operation information of the dryer 100 as a visual image. At this time, the display unit 15-2 may be configured as a touch screen that can receive a user's operation command.

FIG. 2 shows a perspective view showing the door 14 of the dryer 100 shown in FIG. 1 in an open state.

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

A drum 110 is rotatably disposed inside the main body 10, and the drum 110 is connected to the opening 10H so that the drying object can be introduced into the interior through the opening 10H.

Specifically, the drum 110 is provided with a drying room (not shown) connected to the opening 10H, and the items to be dried input into the drying room (not shown) through the opening 10H are dried by hot air flowing into the drying room (not shown). It can be dried.

Meanwhile, a motor (not shown) is provided inside the main body 10, and the drum 110 can be rotated according to the rotation of the motor (not shown). Through this, the object to be dried that has been put into the drying room (not shown) can be tumbled and hot air can be uniformly applied to the object to be dried.

In addition, a 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 pivotably 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 on 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 based on the hinge 14-1.

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

Figure 3 is a block diagram for explaining the 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. there is.

The drum 110 accommodates the drying object. For this purpose, the drum 110 is provided with a drying room (not shown) to accommodate the items to be dried, and the items to be dried can be dried by air flowing into the drying room (not shown).

In this case, the drum 110 is rotatably disposed, and as the drum 110 rotates, the items to be dried are tumbled and air can be uniformly applied to the items to be dried.

The first sensor 120 senses the drying state of the object accommodated in the drum 110. That is, the first sensor 120 is provided inside the drum 110 and senses the drying 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 object to be dried is placed between the two electrodes, it dries the object based on the magnitude of the current flowing between the two electrodes. The state can be sensed and a value representing the dry state, that is, sensing data (e.g., pulse value), can be generated. For example, the higher the moisture content of the object to be dried between two electrodes, the better the current flows between the two electrodes, and the lower the moisture content of the object to be dried between the two electrodes, the better the flow of current between the two electrodes. Since current does not flow well, the dryness detection sensor can generate lower sensing data as the drying object becomes drier, and generate higher sensing data as the drying object becomes wetter.

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 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 placed on the filter (49 in 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 can 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 can heat the air supplied into the drum 110 through various methods.

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

The blower 150 may form a flow of air penetrating the inside of the drum 110. In this case, the blower 150 may include a fan (41 in FIG. 4) to generate a flow of air according to rotation.

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

Specifically, the processor 160 may control the rotation speed and direction of the drum 110, the temperature of air discharged from the drum 110, and the rotation speed of the fan.

To this end, the processor 160 is connected to various components included in the dryer 100 and can transmit and receive various data and signals. Additionally, the processor 160 can control various components included in the dryer 100 by generating and transmitting control commands.

In this case, the processor 160 can control hardware or software components connected to the processor 160 by, for example, running an operating system or application program, and can perform various data processing and calculations. Additionally, the processor 160 may load and process commands or data received from at least one of the other components into volatile memory and store various data in non-volatile memory.

To this end, the processor 160 is a dedicated processor (e.g., embedded processor) or a general-purpose processor capable of performing the operations by executing one or more software programs stored in a memory device. (e.g. CPU, GPU, or application processor).

In particular, the processor 160 can control the rotation direction of the drum 110 in the drying cycle performed according to the blanket drying course, and also control the end of the drying cycle based on the temperature discharged from the drum 110. there is.

Hereinafter, the process that the dryer 100 performs in the blanket drying course will be described in more detail according to various embodiments.

According to various embodiments of the present invention, the dryer 100 may be implemented as a heat pump dryer. Referring to FIG. 4, the configuration of the dryer 100 will be described when the dryer 100 is implemented as a heat pump dryer. Let's do it.

Figure 4 is a diagram 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 motor) (not shown), and the rotation speed and direction of the fan 41 may be changed according to the control of the inverter motor (not shown).

Meanwhile, as the fan 41 rotates, air circulates through the flow path 42, allowing air to flow into and be discharged from the drum 110.

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

That is, the flow path 42 becomes a circulation passage for air discharged from the drum 110 and introduced into the drum 110, and the fan 41 rotates to introduce air into the drum 110, thereby forming the flow path 42. ) can circulate the air.

Meanwhile, the dryer 100 may include a heat pump system 43 that condenses and heats air through a refrigerant.

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

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

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

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

In Cond (44), the refrigerant releases heat and condenses. Therefore, Cond 44 heats the circulating air through heat exchange between the refrigerant and the circulating air.

Then, the expansion means (48) expands the refrigerant flowing from Cond (44) and discharges it to EVA (45).

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

Specifically, the high-temperature, low-humidity air heated by the Cond 44 passes through the drying object in the drum 110 to become high-temperature, high-humidity air, and is dehumidified while passing through the EVA 45 to become low-temperature, low-humidity air. This is heated into high temperature, low humidity air by Cond (44) and flows into the drum (110).

Meanwhile, a filter 49 may be provided between the drum 110 and the EVA 45 to remove foreign substances such as lint in the air.

In this way, the dryer 100 is implemented as a heat pump dryer and can dry the object to be dried through the components shown in FIG. 4.

Meanwhile, below, when the dryer 110 includes the configuration shown in FIG. 4, a method of performing a blanket 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 process. .

Here, the specific course may include a blanket drying course for drying the blanket. In this case, a user input for selecting a blanket drying course may be input through a control panel (15-1 in FIG. 1) provided in the dryer 100. For example, the user can select a blanket drying course by selecting a button provided on the control panel 15-1 or rotating the control dial provided on the control panel 15-1.

Meanwhile, the processor 160 may perform a pre-process before performing the drying process (S510).

Specifically, the processor 160 may drive the fan 41 and the drum 110, and drive the compressor 46 after a specific time has elapsed.

In this case, the processor 160 may drive the fan 41 and the drum 110 at a preset speed and drive the compressor 46 at a preset 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 certain period of time after driving the compressor 46, and increases the operating frequency for a certain period of time. is maintained, and then the operating frequency of the compressor 46 can be gradually increased until the target operating frequency is reached.

In this way, the processor 160 can quickly reach the target temperature inside the drum 110 by performing a pre-process before proceeding with the drying process, thereby increasing drying efficiency.

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.

Meanwhile, when the pre-process is completed, the processor 160 may perform a drying process (S515).

Here, the drying process may mean a process for drying the object accommodated in the drum 110.

Specifically, when the drying process begins, the processor 160 drives the compressor 46 at a preset operating frequency, drives the fan 41 at a preset rotation speed, and operates the drum 110 at a preset rotation speed. It can be driven. At this time, the processor 160 may rotate the drum 110 in a first direction (eg, clockwise).

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

After the drying process starts, the processor 160 may control the rotation direction of the drum 110 based on the drying state of the object detected by the first sensor 120. Specifically, the processor 160 may change the rotation direction of the drum 110 based on the drying state of the object detected by the first sensor 110.

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

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

However, if a specific time has not elapsed since the start of the drying process (S520-Y), the processor 160 determines whether the value representing the drying state of the object sensed by the first sensor 120 is a preset value. You can do it (S525).

Specifically, the processor 160 may determine whether the pulse value of the sensing data sensed by the first sensor 120 is less than or equal to a preset value (S ₁ ). Here, the preset value (S ₁ ) may be 0 or a value close to 0.

In this case, if the value representing the drying state of the object sensed by the first sensor 120 is not less than a preset value (S525-N), the processor 160 detects the first sensor in the drying process (S515). It is possible to repeatedly determine whether the value sensed at (120) is a preset value.

Meanwhile, the processor 160 may change the rotation direction of the drum 110 if the value indicating the drying state of the object sensed by the first sensor 120 is less than or equal to a preset value. That is, the processor 160 can change the rotation direction of the drum 110 when the pulse value is less than or equal to the preset value (S ₁ ).

Specifically, given that the drum 110 rotates in the first direction during the drying process, the processor 160 may change the rotation direction of the drum 110 to the second direction (eg, counterclockwise). Additionally, the processor 160 may rotate the drum 110 in a second direction opposite to the first direction for a certain period of time (t ₁ second) (eg, 10 seconds) (S530).

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

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

That is, the processor 160 drives the compressor 46 at a preset operating frequency, drives the fan 41 at a preset 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 the value indicating the drying state of the object sensed by the first sensor 110 is a preset value (S540).

Specifically, the processor 160 may determine whether the pulse value of the sensing data sensed by the first sensor 120 is less than or equal to a preset value (S ₁ ). Here, the preset value (S ₁ ) may be 0 or a value close to 0.

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

Meanwhile, if the value representing the dry state of the object to be dried sensed by the first sensor 120 is less than or equal to a preset value, the processor 160 performs an additional drying process based on the elapsed time from the start of the drying process. You can decide the time.

To this end, the processor 160 may determine the elapsed time from the start of the drying process.

Specifically, the processor 160 ends the pre-process and changes the rotation direction of the drum 110 once from the time when the drying process first starts (i.e., when the drying process starts in step S515) and then returns to the original state. After that, the elapsed time until the value sensed by the first sensor 120 becomes a preset value (i.e., the time when a pulse value corresponding to less than the preset value (S ₁ ) is sensed in step S540) can be determined. You can.

Additionally, the processor 160 may determine a time to perform an additional drying process based on the elapsed time.

In this case, the processor 160 may determine the time to additionally perform the drying process using the elapsed time and information stored in the memory (not shown) of the dryer 100.

Here, the information stored in the memory (not shown) indicates how long the drying process will be additionally performed according to the measured elapsed time, and may be, for example, as shown in Table 1 below. This is for optimal drying of the object to be dried, and 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, if the elapsed time is 22 minutes (i.e., T = 22 minutes), processor 160 may determine 148 minutes (= 170 minutes - 22 minutes) as the time to perform an additional drying stroke. there is.

Afterwards, the processor 160 may additionally perform a drying process for a determined time (S545).

At this time, the processor 160 may additionally display the time to perform the drying process on the display unit 15-2.

In the case of the above-mentioned example, when the time to perform the additional drying process is determined to be 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 certain time (t ₁ second) at a certain time period (T ₂ minutes) in an additional drying process (S545).

That is, when performing the drying process, the processor 160 drives the compressor 46 at a preset operating frequency, drives the fan 41 at a preset rotation speed, and operates the drum 110 at a preset rotation speed. It can be driven. At this time, 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 at intervals of t ₁ second (eg, 10 seconds) every T ₂ minutes (eg, 10 minutes) while the drying process 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 have elapsed after the drying process starts and rotates the drum 110 in the second direction t It rotates for ₁ second, and when t ₁ second has elapsed, the rotation direction of the drum 110 can be changed to the first direction and the drum 110 can be rotated in the first direction. Thereafter, when T ₂ minutes have elapsed 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. , t When ₁ second has elapsed, the process of changing the rotation direction of the drum 110 to the first direction may be repeatedly performed.

Meanwhile, while the drying process is performed, the processor 160 may determine whether the temperature of the air inside the drum 110 has reached a preset target temperature based on the temperature sensed by the second sensor 130.

That is, while the drying process is performed, the temperature of the air inside the drum 110 gradually increases due to the high temperature and low humidity air generated by the compressor 46, and therefore, the temperature sensed by the second sensor 130 It also gradually increases.

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 has reached the preset target temperature.

In this case, if the temperature sensed by the second sensor 130 is the preset first temperature, the processor 160 may turn off the compressor 46 that is being driven. For example, the processor 160 may turn off the compressor 46 when the temperature sensed by the second sensor 130 gradually increases to 57°C.

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

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

In this way, the processor 160 can control the on/off of the compressor 46 based on the temperature sensed by the second sensor 130 to perform a drying cycle.

Thereafter, when the drying time set for the additional drying process has elapsed (S550-Y), the processor 160 may end the drying process (S555). That is, the processor 160 may perform the drying process for the set drying time and end the drying process.

Then, the processor 160 may perform a cooling process (S555).

Specifically, the processor 160 may stop driving the compressor 460 and increase the rotation speed of the fan 41. This is to quickly lower the temperature inside the drum 110 by increasing the air volume by the fan 41.

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

That is, as the fan 41 is driven, the temperature inside the drum 110 gradually decreases, so the temperature value indicated by the data sensed by the second sensor 130 also gradually decreases.

Accordingly, when the temperature sensed by the second sensor 130 gradually decreases and reaches a preset temperature, the processor 160 stops the operating fan 41 and drum 110 to end the cooling process. You can.

Meanwhile, as described above in the present invention, the rotation direction of the drum 110 is changed during the drying process for the object to be dried, and then the time to perform the additional drying process is determined. The reason is as follows. .

First sensor 120, for example, if the pulse value sensed by the dryness detection sensor corresponds to 0 (or a value close to 0) or less, it means that the object to be dried or a portion of the object to be dried is in contact with the dryness detection sensor. means that

On the other hand, in the case of a blanket, because of its large volume, when the drum 110 rotates in one direction, there is almost no drop movement or change in position inside the drum 110, and the drum 110 maintains a constant folded or rolled state. It rotates with (110). Accordingly, the portion of the blanket that is in direct contact with the dryness detection sensor is also limited, and therefore, the value sensed by the dryness detection sensor is not the entire blanket, but the drying of a portion of the surface of the blanket that has been exposed to hot air and has dried quickly. It can be seen as indicating a state.

Therefore, if the time to perform the drying process is determined based on this drying state, the drying process ends in a damp state without drying the folded inner side of the blanket, and drying must be performed repeatedly, causing inconvenience to the user. You can.

Accordingly, in the present invention, the position of the load, that is, the position of the object to be dried, is changed as much as possible within the drum 110 through reverse rotation of the drum 110, and the drying state of the object to be dried is measured more accurately and dried additionally accordingly. In that the time to perform the process is determined, the object to be dried can be dried more effectively.

In addition, even while the drying process is in progress, the rotation direction of the drum 110 is periodically changed, so that the entire blanket can be dried.

Meanwhile, in the case of a blanket, the time required for drying varies depending on the thickness, material, or type and density of the filler, and even for the same blanket, the time required for drying varies depending on the difference in initial moisture content depending on the degree of dehydration.

For example, in the case of a summer blanket, the thickness is thinner than a winter blanket and it is made of a smaller amount of filler, so the time required to dry a summer blanket is generally shorter than the time required to dry a winter blanket. Additionally, blankets that are small in size or have a low initial moisture content require a relatively shorter drying time than blankets that are relatively large in size or have a large initial moisture content.

Therefore, performing an additional drying process uniformly without taking this into consideration may damage the blanket due to overdrying and is also undesirable in terms of energy efficiency.

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

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

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

That is, as described above, in the present invention, the rotation direction of the drum 110 is changed during the drying process for the object to be dried, the time for an additional drying process is determined according to the measured elapsed time, and the determined time is continued. A drying process is additionally performed. Here, the drying process performed after the rotation direction of the drum 110 is controlled may mean an additional drying process.

In this case, the processor 160 may end the drying cycle (S555) if the control state of the compressor 46 satisfies a specific condition (S550-Y) while the drying cycle is additionally performed. Then, the processor 160 may proceed with the cooling process (S560).

Specifically, if the number of times the compressor 46 has been turned off reaches a preset value, the processor 160 may end the drying process even before the determined time has elapsed.

That is, as described above, during the drying process, the processor 160 turns off the compressor 46 if the temperature detected by the second sensor 130 is the preset first temperature. In this case, the processor 160 can 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 reaches a preset value (e.g., 3 times), the processor 160 may end the drying process even before the time set to perform the drying process elapses.

As in the above-mentioned example, assume that the time to perform the additional drying process is set to 148 minutes. In this case, the processor 160 may end the drying cycle without performing any more drying cycles if the compressor 46 is turned off three times before that, even if 148 minutes have not passed since the start of the additional drying cycle.

That is, as described above, in the drying cycle, the temperature inside the drum 110 gradually increases as the compressor 46 is driven. When the temperature inside the drum 110 rises to the target temperature, the processor 160 The compressor 46 is turned off, and when the temperature inside the drum 110 drops to a certain temperature, the compressor 46 is turned on again.

In this case, the fact that the compressor 46 is turned off many times within a specific time means that the temperature inside the drum 110 quickly rises from a specific temperature to the target temperature, which means that the drying target contained in the drum 110 is affected. This may mean that drying has progressed to some extent.

Therefore, continuously performing a drying process on a dried object may cause damage to the dried object, and is undesirable in terms of energy efficiency.

Accordingly, in the present invention, in order to reduce damage to the object to be dried and increase energy efficiency, the drying process is terminated even before the set time for performing the drying process has arrived for the object to be dried for which it is determined that drying has been completed to some extent. do.

Meanwhile, in the above-described example, the drum 110 is reversely rotated once, but this is only an example. That is, according to various embodiments, the number of reverse rotations of the drum 110 may change depending on the drying state of the object to be dried, and this will be described in more detail with reference to FIG. 6.

Figure 6 is a diagram for explaining a method of performing a drying process according to an embodiment of the present invention.

In Figure 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 Figure 5. , detailed explanations will be omitted. In addition, although FIG. 6 does not show the step of determining whether a specific time has elapsed from the start of the drying process (e.g., S520 in FIG. 5), this operation may also be performed in FIG. 6.

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

Specifically, the processor 160 may determine whether the pulse value of the sensing data sensed by the first sensor 120 is less than or equal to a preset value (S ₁ ). Here, the preset value (S ₁ ) may be 0 or a value close to 0.

In this case, if the value representing the drying state of the object sensed by the first sensor 120 is less than or equal to a preset value, the processor 160 reversely rotates the drum 110 from the point of reverse rotation of the drum 110. Thereafter, the time taken for the value sensed by the first sensor 120 to become a preset value may be determined, and it may be determined whether the determined time is less than or equal to the preset value (T ₃ minutes) (S670). At this time, the preset value (T ₃ minutes) may be, for example, 1 minute.

In this case, if the determined time is greater than the preset value (S670-N), the processor 160 reversely rotates the drum 110 again and performs a drying process, and the value sensed by the first sensor 120 It can be determined whether this is less than a preset value.

However, if the determined time is less than or equal to a preset value (S670-Y), the processor 160 may perform an additional drying process (S645).

In this way, if the value representing the dry state of the object to be dried becomes a preset value within a short time after reverse rotating the drum 110, it may mean that the blanket has been completely dried. According to an embodiment of the present invention, As shown in FIG. 6, the number of reverse rotations of the drum 110 may be adjusted until the blanket is completely dried, and then an additional drying cycle may be performed. In this case, the additional drying stroke time performed may be shorter than the drying stroke time performed in FIG. 5.

Meanwhile, in the above-described example, it was explained that the additional drying process is terminated when the number of times the compressor 46 is turned off reaches a preset value, but this is only an example. That is, according to various embodiments, the number of times the compressor 46 is turned off and the temperature of the air inside the drum 110 that turns off the compressor 46 can be set in various ways depending on the degree of dryness and drying temperature. It will be described in more detail with reference to FIGS. 7 and 8.

Figure 7 is a diagram for explaining a method of performing a drying process according to an embodiment of the present invention.

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

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

For example, the user can select a blanket drying course, select a button provided on the control panel 15-1, or select a drying degree using the control dial provided on the control panel 15-1.

Here, the degree of dryness may include a first level (eg, standard) and a second level (eg, heavy) with a higher degree of dryness than the first level.

Meanwhile, after starting the additional drying process, the processor 160 may determine whether the drying level selected by the user corresponds to the first level (S770).

In this case, if 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 process can be ended (S755).

Here, the specific first condition may include whether the number of times the compressor 46 is turned off reaches a preset value (eg, 3 times).

Meanwhile, if the drying degree corresponds to the second level, the processor 160 determines whether the additional drying time is completed or the control state of the compressor 46 satisfies a specific first condition (S790) and determines whether the additional drying time is completed. When this is completed or 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, 5 times).

As such, according to an embodiment of the present invention, the number of times the compressor 46 is turned off required to end the drying cycle may be set differently depending on the level of the drying process. That is, the higher the drying degree level, the more times the compressor 46 is turned off required to complete the drying cycle.

Accordingly, it is possible to perform a more efficient drying process to meet the degree of drying requested by the user.

Figure 8 is a diagram for explaining a method of performing a drying process according to an embodiment of the present invention.

In that S810, S815, S825, S830, S835, S840, S845, S855, and S860 in FIG. 8 are the same as S510, S515, S525, S530, S535, S540, S545, S555, and S560 in FIG. Please omit it. In addition, although FIG. 8 does not show the step of determining whether a specific time has elapsed from the start of the drying process (e.g., S520 in FIG. 5), this operation may also be performed in FIG. 8.

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

For example, the user can select a blanket drying course, select a button provided on the control panel 15-1, or select a drying temperature using the control dial provided on the control panel 15-1.

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

Meanwhile, after starting the additional drying process, 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) and performs additional drying. When the time expires or the control state of the compressor 46 satisfies a specific first condition (S880-Y), the drying process can be ended (S855).

Here, the specific first condition may include whether the number of times the compressor 46 has been turned off reaches a preset value (eg, 3 times).

Meanwhile, while the drying process is performed, the temperature of the air inside the drum 110 gradually increases as the compressor 46 is driven. In this case, the processor 160 determines whether the temperature of the air inside the drum 110 has reached a preset target temperature based on the temperature sensed by the second sensor 130, and determines whether the temperature of the air inside the drum 110 When the preset target temperature is reached, the compressor 46 can be turned off.

Specifically, if the temperature sensed by the second sensor 130 is the preset first temperature, the processor 160 may turn off the compressor 46 that is being driven. For example, the processor 160 may turn off the compressor 46 when the temperature sensed by the second sensor 130 gradually increases to 57°C.

Meanwhile, when the operation of the compressor 46 is stopped, the temperature of the air inside 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 the preset second temperature, the processor 160 may turn on the compressor 46 that was turned off. For example, when the temperature sensed by the second sensor 130 gradually decreases to 56°C, the processor 160 may turn the compressor 46 in the off state back on.

In this way, when the drying temperature is selected as the first temperature, the temperature used for on/off control of the compressor 46 can 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) and determines the additional drying time When this is completed or 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 has been turned off reaches a preset value (eg, 7 times).

Meanwhile, while the drying process is performed, the temperature of the air inside the drum 110 gradually increases as the compressor 46 is driven. In this case, the processor 160 determines whether the temperature of the air inside the drum 110 has reached a preset target temperature based on the temperature sensed by the second sensor 130, and determines whether the temperature of the air inside the drum 110 When the preset target temperature is reached, the compressor 46 can be turned off.

Specifically, if the temperature sensed by the second sensor 130 is the preset first temperature, the processor 160 may turn off the compressor 46 that is being driven. For example, the processor 160 may turn off the compressor 46 when the temperature sensed by the second sensor 130 gradually increases to 50°C.

Meanwhile, when the operation of the compressor 46 is stopped, the temperature of the air inside 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 the preset second temperature, the processor 160 may turn on the compressor 46 that was turned off. For example, when the temperature sensed by the second sensor 130 gradually decreases to 49°C, the processor 160 may turn the compressor 46 in the off state back on.

In this way, when the drying temperature is selected as the second temperature, the temperature used for on/off control of the compressor 46 can be set to 50°C and 49°C.

Ultimately, according to an 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 that turns off the compressor 46 required to end the additional drying cycle depend on the drying temperature. It can be set differently. That is, the lower the drying temperature, the more times the compressor 46 is turned off required to complete the drying cycle, and the temperature of the air inside the drum 110 that turns off the compressor 46 is also set lower. You can.

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

Meanwhile, according to various embodiments of the present invention, the drying process can be performed in various ways depending on the type of object to be dried, which will be described in more detail with reference to FIG. 9.

Figure 9 is a diagram for explaining a method of performing a drying process according to an embodiment of the present invention.

Meanwhile, in FIG. 9, the pre-process, drying process, reverse rotation of the drum 110, and additional drying process are the same as those described in FIG. 5, so detailed description of the overlapping parts will be omitted.

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

Here, the type of object to be dried may include a first type, a second type, and a third type. In this case, for example, the first type may include a blanket, the second type may include pillows and cushions, and the third type may include clothing (padding).

Meanwhile, user input for selecting the type of object to be dried may be input by selecting a button provided on the operation unit 15-1 or through an operation dial provided on the operation unit 15-1.

For example, the user can select the first type by selecting the blanket drying course, the second type by selecting the cushion drying course, and the third type by selecting the clothes drying course.

First, when the type of object to be dried is selected as the first type (i.e., blanket), the processor 160 performs a pre-process and drying process (S911, 912), and the pulse value sensed by the first sensor 120 is It can be determined whether it is less than or equal to a preset value (S ₁ ) (S913). Here, the preset value (S ₁ ) may be, for example, 0 or a value close to 0.

And, when the pulse value sensed by the first sensor 120 is below the preset value (S ₁ ) (S913-Y), the processor 160 operates the drum 110 for t ₁ second (e.g., 10 seconds). ) can be reversed (S914) and the drying cycle can be performed again (S915).

Additionally, the processor 160 may determine whether the pulse value sensed by the first sensor 120 is less than or equal to a preset value (S ₁ ) (S916). Here, the preset value (S ₁ ) may be, for example, 0 or a value close to 0.

Thereafter, if the pulse value sensed by the first sensor 120 is below the preset value (S ₁ ), the processor 160 determines a time to perform an additional drying cycle, and performs an additional drying cycle for the determined time. can be performed (S940). At this time, the processor 160 may reversely rotate the drum 110 for a certain period of time (t ₁ second) at specific time intervals (T ₂ minutes) during the drying process.

Meanwhile, the processor 160 ends the drying cycle (S970) when the time set to perform the additional drying cycle elapses or when the control state of the compressor 46 satisfies a specific condition (S950-Y). , the cooling process can proceed (S980).

Here, the specific condition may include a condition in which the compressor 46 is shut down a preset number of times. For example, the processor 160 may end the drying cycle if the compressor 46 is turned off three times while performing the additional drying cycle.

Meanwhile, when the type of object to be dried is selected as the second type (e.g., pillows, cushions), the processor 160 performs a pre-process and drying process (S921, 922), and It can be determined whether the pulse value is less than or equal to a preset value (S ₂ ) (S923). Here, the preset value (S ₂ ) may be, for example, 5 or a value close to 5.

Then, the processor 160 reverses the drum 110 for t ₁ second (e.g., 10 seconds) when the pulse value sensed by the first sensor 120 is less than or equal to the preset value (S ₂ ) (S923-Y). It can be rotated (S924) and the drying process can be performed again (S925).

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

Thereafter, if the pulse value sensed by the first sensor 120 is less than or equal to a preset value (S ₂ ), the processor 160 determines a time to perform an additional drying cycle, and performs an additional drying cycle for the determined time. (S945). At this time, the processor 160 may reversely rotate the drum 110 for a certain time (t ₁ second) (e.g., ₁₀ seconds) every specific time (T 2 minutes) (e.g., 10 minutes) during the drying cycle. .

Meanwhile, when the time set to perform the additional drying process elapses (S960-Y), the processor 160 may end the drying process (S970) and proceed with the cooling process (S980).

Meanwhile, when the type of object to be dried is selected as the third type (e.g., clothing (padding)), the processor 160 performs a pre-process and drying process (S931, 932), and the first sensor 120 detects It can be determined whether the pulse value is less than or equal to a preset value (S ₃ ) (S933). Here, the preset value (S ₃ ) may be, for example, 10 or a value close to 10.

And, when the pulse value sensed by the first sensor 120 is less than or equal to a preset value (S ₃ ) (S933-Y), the processor 160 reverses the drum 110 for t ₁ second (e.g., 10 seconds). It can be rotated (S934) and the drying process can be performed again (S935).

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

Thereafter, if the pulse value sensed by the first sensor 120 is less than or equal to a preset value (S ₃ ), the processor 160 determines a time to perform an additional drying cycle, and performs an additional drying cycle for the determined time. (S945). At this time, the processor 160 may reversely rotate the drum 110 for a certain time (t ₁ second) (e.g., ₁₀ seconds) every specific time (T 2 minutes) (e.g., 10 minutes) during the drying cycle. .

Meanwhile, when the time set to perform the additional drying process elapses (S960-Y), the processor 160 may end the drying process (S970) and proceed with the cooling process (S980).

Meanwhile, the processor 160 can determine the time to additionally perform the drying process for each type of drying object. At this time, the processor 160 determines the elapsed time from the start of the drying process and the time stored in the memory (not shown). The information can be used to determine the time to perform additional drying cycles.

Here, the information stored in the memory (not shown) indicates how long the drying process will be additionally performed according to the measured elapsed time, and may be, for example, as shown in Table 2 below. This is for optimal drying of the object to be dried, and may be an experimentally measured value.

Measured elapsed time (T) Additional drying time for blanket Additional drying time for pillows and cushions Additional drying time for padded clothing 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 embodiment of the present invention, the timing of reverse rotation of the drum 110 can be varied depending on the type of object to be dried. In other words, the thickness, material, filler, etc. of the drying item varies depending on the type. Taking this into account, the drum 110 is reversed in the following order: padded clothing → pillows, cushions → blankets, with drying relatively advanced. It can be rotated. However, in this case, the time for the additional drying process can also be set relatively long in the following order: padded clothing → pillows, cushions → blankets.

Accordingly, a more efficient drying process can be performed depending on the type of object to be dried.

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

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

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

Then, after the drying cycle begins, the rotation direction of the drum is controlled based on the drying state of the object sensed by the first sensor (S1020).

Afterwards, the end of the drying cycle 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 drying state of the object sensed by the first sensor. That is, in step S1020, the drum is rotated in the first direction in the drying cycle, and if the value representing the drying state of the object sensed by the first sensor is less than a preset value, the drum is rotated in the second direction opposite to the first direction for a certain period of time. The drum can be rotated. In this case, after a certain period of time has elapsed, the drying process can be performed again.

Meanwhile, after the drying process is performed again, if the value representing the drying state of the object sensed by the first sensor is less than or equal to the preset value, an additional drying process is performed based on the elapsed time from the start of the drying process. The time can be determined, and an additional drying process can be performed for the determined time.

In this case, in an additional drying process, the drum may be rotated in the second direction for a certain period of time.

Meanwhile, the dryer may further include a compressor for heating the air supplied into the drum.

In this case, in the drying cycle 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 cycle is controlled based on the control state of the compressor. You can.

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

Additionally, in step S1030, if the number of times the compressor has been turned off is a preset value, the drying cycle can be ended even before the determined time has elapsed.

In this case, if the temperature sensed by the second sensor is the preset first temperature, the running compressor can be turned off, and if the temperature sensed by the second sensor after the compressor is turned off is the preset second temperature, the turned off compressor can be turned on. there is.

The drying method of such a dryer has been described in detail.

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

A non-transitory readable medium refers to a medium that stores data semi-permanently and can be read by a device, rather than a medium that stores data for a short period of time, such as registers, caches, and memories. Specifically, the various applications or programs described above may be stored and provided on non-transitory readable media such as CD, DVD, hard disk, Blu-ray disk, USB, memory card, ROM, etc.

In addition, although the bus is not shown in the above block diagram showing the dryer, communication between each component in the dryer may be performed through the bus. Additionally, the dryer may further include a processor such as a CPU or microprocessor that performs the various steps described above.

In addition, although preferred embodiments of the present invention have been shown and described above, the present invention is not limited to the specific embodiments described above, and the technical field to which the invention pertains without departing from the gist of the present invention as claimed in the claims. Of course, various modifications can be made by those of ordinary skill in the art, and these modifications should not be understood individually from the technical idea or perspective of the present invention.

100: dryer 110: drum
120: first sensor 130: second sensor
140: heating unit 150: blowing unit
160: processor

Claims (20)

In the dryer,
A main body containing a control panel;
a manipulation unit disposed on the control panel and receiving user input;
a drum rotatably disposed within the main body to accommodate objects to be dried;
a motor for rotating the drum;
a first sensor outputting a pulse for sensing a dry state of the object accommodated in the drum;
A heat pump system including a compressor that circulates refrigerant to heat air supplied into the drum;
a blower supplying the heated air into the drum;
a second sensor that outputs a signal to sense the temperature of the air discharged from the drum; and
When a user input for selecting a course for drying the object to be dried including type information, drying temperature information, drying intensity information, and drying time information is received, a drying process for the object to be dried is performed based on the user input. A processor that sets a drying temperature, drying intensity, and drying time to perform the drying process, and performs the drying process based on the set drying temperature, drying intensity, and drying time,
The processor,
Controlling the motor to rotate the drum in a first direction, controlling the compressor and the blower to operate,
The pulse value output from the first sensor is identified while the drum rotates in the first direction, and when the identified pulse value is identified as being less than or equal to a preset first value, the drum is rotated in a direction opposite to the first direction. Controlling the motor to rotate in a second direction,
Calculate a first time elapsed since the drum rotated in the second direction, and control the motor to rotate the drum in a third direction that is the same direction as the first direction based on the first time. do,
While the drum rotates in the third direction, the pulse value output from the first sensor is re-identified, and when the re-identified pulse value is identified as being less than or equal to the preset first value, the It is decided to perform an additional drying process,
Identifying the performance time of the drying process taken up to the point at which it is determined to perform the additional drying process, determining the performance time of the additional drying process based on the identified performance time, and performing the determined additional drying process Performing an additional drying process on the dried object based on
While performing the additional drying process, the temperature of the air discharged from the drum is repeatedly sensed based on the sensing value obtained through the second sensor,
If the detected temperature is identified as being higher than a preset second value while the drum rotates in the third direction and the blower operates, control the compressor to turn off the compressor,
After the compressor is turned off, if the detected temperature is identified as being below a preset third value that is less than the preset second value, turning the turned off compressor back on,
While performing the additional drying cycle, calculate the number of times the compressor is turned off, and if it is identified that the number of times the compressor is turned off is greater than a preset fourth value, terminate the additional drying cycle,
The preset first value is set differently depending on the type of the object to be built,
The preset second value and the preset fourth value are set to correspond to at least one of the set drying temperature and drying intensity,
The first sensor includes a pair of electrodes,
A dryer in which the pulse is output when the object to be dried comes into contact with the pair of electrodes.
delete delete delete delete delete delete delete delete delete In a method of controlling a dryer to perform a specific course,
Upon receiving a user input for selecting the type of object to be dried and a specific course for drying the object provided in the dryer, setting a drying temperature, drying intensity, and drying time to perform a drying process for the object to be dried. ; and
Comprising the step of performing the drying process based on the set drying temperature, drying intensity, and drying time,
The steps performed above are:
controlling a motor to rotate the drum in a first direction;
Controlling the compressor and blower to operate while the drum rotates in the first direction;
Identifying a pulse value for sensing a drying state of an object output from a first sensor while the drum rotates in the first direction;
If the identified pulse value is identified as being less than or equal to a preset first value, controlling the motor to rotate the drum in a second direction opposite to the first direction;
calculating a first time elapsed since the drum rotated in the second direction;
controlling the motor to rotate the drum in a third direction that is the same as the first direction based on the first time;
Re-identifying the pulse value output from the first sensor while the drum rotates in the third direction;
If the re-identified pulse value is identified as being less than or equal to the preset first value, it is determined to perform an additional drying process for the object to be dried, and the drying process required up to the time of determining to perform the additional drying process is determined. identifying execution times;
determining a performance time of the additional drying process based on the identified performance time; and
Comprising: performing an additional drying process on the object to be dried based on the determined performance time of the additional drying process,
The step of performing the additional drying process is,
repeatedly detecting the temperature of air discharged from the drum based on a sensing value obtained through a second sensor while performing the additional drying process;
controlling the compressor to turn off the compressor when the detected temperature is identified as being higher than a preset second value while the drum is rotating in the third direction and the blower is operating;
After the compressor is turned off, if the sensed temperature is identified as being less than the preset third value but less than the preset second value, controlling the compressor to turn the turned off compressor back on; and
While performing the additional drying cycle, calculating the number of times the compressor has been turned off, and if it is identified that the number of times the compressor has been turned off is greater than a preset fourth value, terminating the additional drying cycle,
The preset first value is set differently depending on the type of the object to be built,
The preset second value and the preset fourth value are set to correspond to at least one of the set drying temperature and drying intensity,
The pulse is output when the object to be dried inside the drum contacts a pair of electrodes of the first sensor. delete delete delete delete delete delete delete delete delete

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