JP7489579B2 - Dehumidifier - Google Patents

Description

The present invention relates to a dehumidifier used for drying clothes.

One example of this type of dehumidifier is known from the past, described in Japanese Patent Publication No. 5333480.

The dehumidifier and the control method will be described below with reference to Figures 8 to 13. As shown in Figures 8 and 9, the dehumidifier includes a dehumidifying means 112 and a blowing means 113 in a device body 101, a control means 108 that controls the operation of the dehumidifying means 112 and the blowing means 113, a temperature detection means 104 that detects the temperature around the device, a humidity detection means 105 that detects the humidity, and an operation unit 102 that performs operation operations.

As shown in the flowchart of FIG. 10, the control method for the dehumidifier is as follows: when the clothes drying mode (not shown) is selected on the operation switch of the control unit, the switch is turned on in STEP 111.

Next, the type of switch input in STEP 112 is identified, and if there is an input from the clothes drying switch, the process proceeds to STEP 113. Then, in STEP 113, the control means 108 starts the drying operation and sets the drying constant Dx. The drying constant Dx is set to a value determined by experiment using standard test conditions (room size, amount of clothes, temperature and humidity, etc.) that have been set in advance.

Next, we will correct the drying constant Dx value. Correction of the drying constant Dx value will be explained using Figure 11.

First, the timer is started and the elapsed time Time (STEP 118) is measured. Next, the temperature and humidity detected by the temperature detection means 104 and humidity detection means 105 (STEP 119) are sent to the control means 108 in the microcomputer 107 by the signal sending means. Based on the detected temperature Temp0 and humidity Rh0, the control means 108 calculates the drying coefficient Tt0 (STEP 120) and stores each as an initial value.

Then, a loop is entered with a measurement interval of X minutes (STEP 121), and the temperature and humidity detected (STEP 122) by the temperature detection means 104 and the humidity detection means 105 are sent to the control means 108 in the microcomputer 107 by the signal sending means. Based on the detected temperature Temp(n) and humidity Rh(n), the control means 108 calculates the absolute humidity Xr(n) (STEP 123) and the dryness coefficient Tt (STEP 124), and determines the dryness based on the dryness constant Dx (STEP 125).

If it is determined that the temperature is not yet dry, the absolute humidity Xr(n) is the absolute humidity Xr(n-1) of the previous data.
If the dryness constant Dx has decreased, the process returns to STEP 121 and is repeated (STEP 126). If the dryness constant Dx has decreased, a correction value DH is calculated based on the elapsed time Time at that time, and the dryness constant Dx is corrected (STEP 127).

Specifically, the correction value DH is calculated as a function of the elapsed time Time. Based on the elapsed time Tx at which the absolute humidity Xr(n) when the initially set dryness constant Dx is calculated falls below the absolute humidity Xr(n-1) of the previous data, if the elapsed time Time is long, the correction value DH becomes negative according to the ratio, and if the elapsed time Time is short, the correction value DH becomes positive according to the ratio. As an example, it is calculated using the formula DH = a x (Tx - Time), where a is a constant. Then, the correction value DH is subtracted from the dryness constant Dx to make a correction, and the process moves to STEP 114 in Figure 10.

As shown in FIG. 10, in STEP 114, when the measurement interval X time has elapsed, the process proceeds to STEP 115. In STEP 115, the temperature is detected by the temperature detection means 104, the humidity is detected by the humidity detection means 105, and the process proceeds to STEP 116.

In STEP 116, the temperature and humidity detected by the temperature detection means 104 and the humidity detection means 105 are sent to the control means 108 in the microcomputer 107 by the signal sending means. Based on the detected temperature and humidity, the control means 108 calculates the drying coefficient Tt (STEP 116).

The method for calculating the drying coefficient Tt (STEP 116) is explained in detail in Figure 12.

First, the absolute humidity Xr and total heat Ir of the ambient air are calculated from the detected temperature and humidity (STEP 128).

Here, we will consider the concept of drying clothes on a psychrometric chart. In Figure 13, general ambient air is taken as the air state. A state in which the total heat content of this air does not change is an isenthalpy state. Since the air near the clothes when drying is in a humidity state of 100%, we can assume that the air state is an isenthalpy state of the above ambient air.

As shown in FIG. 13, the air around the clothes is assumed to have a humidity of 100% because it is in the drying process (STEP 129), and the absolute humidity Xc around the clothes can be calculated from the total heat quantity Ir of the ambient air calculated in STEP 121 (STEP 130).

Next, proceed to STEP 131 and calculate the drying coefficient Tt from the absolute humidity Xc near the clothes and the absolute humidity Xr of the ambient air. This drying coefficient Tt is the difference between the absolute humidity Xc near the clothes and the absolute humidity Xr of the ambient air on the psychrometric chart in FIG. 13. When this drying coefficient Tt is large, the rate at which moisture in the clothes transfers to the ambient air increases. Therefore, when the drying coefficient Tt is large, the drying speed of the clothes increases.

In FIG. 10, based on Tt (STEP 116) calculated as described above, the process moves to STEP 117, where a dryness determination is made based on the dryness constant Dx. In other words, the dryness coefficient Tt value is calculated every X hours of the measurement interval in STEP 114, and a dryness determination is made based on the corrected dryness constant Dx in STEP 117.

Dryness is judged by subtracting the dryness coefficient Tt from the dryness constant Dx every X hours of measurement. If the subtracted value is 0 or more, it is judged not to be dry, and if the subtracted value is less than 0, it is judged to be dry.

Patent No. 5333480

The dryness of the clothes is estimated indirectly from changes in the room temperature and humidity, which are parameters that the dehumidifier itself can sense, so there is an inevitable problem of error in determining when the clothes drying is complete.

In order to achieve this object, the present invention provides a dehumidification device including a dehumidifying means provided within a main body case, a blowing means for blowing air to the dehumidifying means, a control means for controlling the operation of the dehumidifying means and the blowing means, a temperature detection means for detecting an ambient temperature of the main body case, and a humidity detection means for detecting an ambient humidity of the main body case, the control means having a clothes drying operation for operating the dehumidifying means and the blowing means, and at the start of the clothes drying operation:
an operation start temperature is detected by the temperature detection means, an operation start humidity is detected by the humidity detection means, an initial drying constant Dx for determining the end of the clothes drying operation is set based on the operation start temperature, the operation start humidity, and a drying constant table which is a reference for the operation time of the clothes drying operation, an initial drying constant Dx is set for determining the end of the clothes drying operation, an intermediate operation temperature is detected by the temperature detection means during the clothes drying operation, an intermediate operation humidity is detected by the humidity detection means, and a drying constant correction is performed by correcting the initial drying constant Dx based on the intermediate operation temperature and the intermediate operation humidity to obtain a corrected drying constant Dx, an end of the clothes drying operation is determined based on the corrected drying constant Dx, the intermediate operation temperature, and the intermediate operation humidity, and the clothes drying operation is stopped, and an operation end temperature is detected by the temperature detection means at the end of the clothes drying operation,
The humidity detection means detects the humidity at the end of operation, and a first drying constant table correction control is performed to correct the drying constant table based on the corrected drying constant Dx, the operation end temperature, and the operation end humidity to create a first drying constant table which will be the next drying constant table, thereby achieving the desired object.

According to the present invention, the results of sensing and estimated operation are reflected in the operation control, so that the accuracy of determining when clothes drying is complete is improved, thereby eliminating unnecessary operation, and providing a dehumidifier that is more energy efficient and easier to use.

1 is a schematic cross-sectional view of a dehumidifier according to an embodiment of the present invention; Block circuit diagram of a dehumidifier according to an embodiment of the present invention. FIG. 1 is a flow chart showing the operation of the dehumidifier according to the first embodiment of the present invention and the correction of the first dryness constant table. FIG. 11 is a flow chart showing the operation of the dehumidifier according to the second embodiment of the present invention and the correction of the second dryness constant table. FIG. 11 is a flow chart showing the operation of the dehumidifier according to the third embodiment of the present invention and the correction of the third dryness constant table. FIG. 11 is a flow chart showing the operation of the dehumidifier according to the fourth embodiment of the present invention and the correction of the fourth dryness constant table. FIG. 5 is a flowchart showing the operation of the dehumidifier according to the fifth embodiment of the present invention and the correction of the fifth dryness constant table. Cross-sectional diagram of a conventional dehumidifier Block diagram of a conventional dehumidifier Conventional dehumidifier operation flow chart Flowchart of Dx value correction for conventional dehumidifiers Flowchart circuit diagram for calculating the drying coefficient Tt of a conventional dehumidifier Psychroic chart for explaining the drying coefficient Tt of a conventional dehumidifier

The following describes an embodiment of the present invention with reference to the drawings.

(Embodiment 1)
As shown in Figures 1 and 2, the dehumidifier 1 includes within its main body a dehumidifying means 2, a blowing means 3, a control means 4, a temperature detection means 5, a humidity detection means 6, and an operation unit 7. The temperature detection means 5 detects the temperature around the device, and the humidity detection means 6 detects the humidity around the device. A user inputs operation details such as an operation mode into the operation unit 7. The control means 4 controls the operation of the dehumidifying means 2 and the blowing means 3 based on the temperature around the device detected by the temperature detection means 5, the humidity detected by the humidity detection means 6, and the operation mode input into the operation unit 7 by the user.

When the clothes drying mode (not shown) is selected on the operation switch of the operation unit 7, the switch is input in STEP 111 as shown in the flowchart of Figure 3.

Next, in STEP 112, the type of switch input is identified, and if there is an input from the clothes dryer switch 8, the process proceeds to STEP 113. Then, in STEP 113, the control means 4 starts the clothes dryer operation, and the initial drying constant Dx is set.

Here, the initial drying constant setting of the initial drying constant Dx will be explained. Standard test conditions (room size, amount of clothes, temperature and humidity, etc.) are set in advance for the drying constant Dx, and values obtained through experiments are stored in the memory unit 9a of the microcomputer 9 as a drying constant table. When the clothes drying operation starts, the temperature at the start of operation is detected by the temperature detection means 5, and the humidity at the start of operation is detected by the humidity detection means 6. The control means 4 performs the initial drying constant setting, which sets the initial drying constant Dx from the temperature at the start of operation, the humidity at the start of operation, and the drying constant table that serves as the basis for the operation time of the clothes drying operation.

Next, the dryness constant Dx value is corrected. Here, the temperature at the start of operation detected by the temperature detection means 5 and the humidity at the start of operation detected by the humidity detection means 6 are sent to the control means 4 in the microcomputer 9 by the signal sending means.

Here, we will again use Figure 11 to explain how to correct the dryness constant Dx value, as in the conventional example.

First, the timer is started and the elapsed time Time (STEP 118) is measured. Next, the temperature and humidity detected by the temperature detection means 104 and humidity detection means 105 (STEP 119) are sent to the control means 4 in the microcomputer 9 by the signal sending means. Based on the detected temperature Temp0 and humidity Rh0, the control means 4 calculates the drying coefficient Tt0 (STEP 120), and the control means 4 stores these values as initial values in the memory unit 9a.

Then, the process enters STEP 121, which loops at measurement intervals of X minutes, and the temperature and humidity detected (STEP 122) by the temperature detection means 104 and humidity detection means 105 are sent to the control means 4 in the microcomputer 9 by the signal sending means. Based on the detected temperature Temp(n) and humidity Rh(n), the control means 4 calculates the absolute humidity Xr(n) (STEP 123) and the dryness coefficient Tt (STEP 124), and determines the dryness based on the dryness constant Dx (STEP 125).

If it is determined that the humidity is not yet dry, it is determined whether the absolute humidity Xr(n) is lower than the absolute humidity Xr(n-1) of the previous data (STEP 126), and if it is not lower, the process returns to STEP 121 and is repeated. If it is lower, the correction value DH is calculated based on the elapsed time Time at that point, and the dryness constant Dx is corrected (STEP 127).

The correction value DH is calculated as a function of the elapsed time Time. Based on the elapsed time Tx at which the absolute humidity Xr(n) when the initially set initial dryness constant Dx is calculated falls below the previous data Xr(n-1), if the elapsed time Time is long, the correction value DH becomes negative according to the ratio, and if the elapsed time Time is short, the correction value DH becomes positive according to the ratio. As an example, it is calculated using the formula DH = a x (Tx - Time), where a is a constant. Then, the correction value DH is subtracted from the dryness constant Dx to make a correction, and the process moves to STEP 114 in Figure 3.

As shown in FIG. 3, in STEP 114, when the measurement interval X time has elapsed, the process proceeds to STEP 115. In STEP 115, the temperature is detected by the temperature detection means 5, the humidity is detected by the humidity detection means 6, and the process proceeds to STEP 116.

In STEP 116, the control means 4 calculates the drying coefficient Tt based on the detected temperature and humidity at the start of operation (STEP 116).

Again, as in the conventional example, the method for calculating the dryness coefficient Tt (STEP 116) will be described in detail. As shown in FIG. 12, the absolute humidity Xr and total heat quantity Ir of the ambient air are calculated from the detected temperature and humidity at the start of operation (STEP 128).

Here, we will consider the concept of drying clothes on a psychrometric chart. In Figure 13, general ambient air is taken as the air state. A state in which the total heat quantity of this air does not change is an isenthalpy state. Since the air around the clothes when drying is at a humidity of 100%, it can be assumed that the air state is isenthalpy to the above ambient air. Therefore, as shown in Figure 13, the air around the clothes is assumed to be at a humidity of 100% due to the drying process (STEP 129), and the absolute humidity Xc around the clothes can be calculated from the total heat quantity Ir of the ambient air calculated in STEP 128 (STEP 130).

Next, proceed to STEP 131 and calculate the drying coefficient Tt from the absolute humidity Xc near the clothes and the absolute humidity Xr of the ambient air. This drying coefficient Tt is the difference between the absolute humidity Xc near the clothes and the absolute humidity Xr of the ambient air on the psychrometric chart of FIG. 13. When this drying coefficient Tt is large, the speed at which moisture in the clothes transfers to the ambient air increases. Therefore, when the drying coefficient Tt is large, the drying speed of the clothes increases.

Then, as shown in FIG. 3, based on the Tt (STEP 116) calculated as described above, the process proceeds to STEP 117, where a dryness determination is made. The dryness coefficient Tt value is calculated every X hours of the measurement interval in STEP 114, and a dryness determination is made based on the corrected dryness constant Dx in STEP 117.

Dryness is judged by subtracting the dryness coefficient Tt from the dryness constant Dx every X hours of measurement. If the subtracted value is 0 or more, it is judged not to be dry, and if the subtracted value is less than 0, it is judged to be dry.

Next, in STEP 117, the end of the clothes drying operation is determined, the clothes drying operation is stopped, and at the end of the clothes drying operation, the temperature detection means 5 detects the end-of-operation temperature TempE, the humidity detection means 6 detects the end-of-operation humidity RhE, and the end-of-operation temperature TempE and the end-of-operation humidity RhE are stored in the memory unit 9a of the microcomputer 9 (STEP 1). The drying constant table is corrected (STEP 2) based on the corrected drying constant Dx, the end-of-operation temperature TempE, and the end-of-operation humidity RhE to set the first drying constant table, which will be the drying constant table for the next time, in a first drying constant table correction control (STEP 3). The results of the sensing and estimated operation are reflected in the operation control from the next time onwards, so the accuracy of the clothes drying end determination is improved, which eliminates unnecessary operation and improves energy efficiency and usability.

The first drying constant table correction control involves the control means 4 comparing the operation end temperature TempE and operation end humidity at the end of the clothes drying operation with the experimental results when the drying constant table was created, analyzing the difference from the experimental environment, correcting the drying constant Dx, and correcting it to the first drying constant table, which will be the next drying constant table, and saving it in the memory unit 9a of the microcomputer 9. Therefore, repeated learning and correction can be expected to improve accuracy.

Specifically, if the operation end humidity RhE is on the low humidity side compared to the experimental results, the control means 4 determines that the clothes drying operation time was too long and corrects the drying constant Dx in a negative direction, and if it is on the high humidity side, it determines that the clothes drying operation time was insufficient and corrects the drying constant Dx in a positive direction. If the operation end temperature TempE is on the high humidity side compared to the experimental results, it determines that the clothes drying operation time was too long and corrects the drying constant Dx in a negative direction, and if it is on the low humidity side, it determines that the clothes drying operation time was insufficient and corrects the drying constant Dx in a positive direction. The amount of correction may be adjusted depending on the size of the gap.

(Embodiment 2)
The second dryness constant table correction control according to the second embodiment of the present invention will be described with reference to Fig. 4. The same components as those in the first embodiment (Fig. 3) are given the same reference numerals, and detailed description thereof will be omitted.

The control means 4 detects the operation start temperature TempS at the start of the clothes drying operation using the temperature detection means 5, detects the operation start humidity RhS using the humidity detection means 6, and stores the operation start temperature TempS and operation start humidity RhS in the memory unit 9a (STEP 4). The control means 4 performs second drying constant table correction control (STEP 6) to correct the first drying constant table based on the operation start temperature TempS and operation start humidity RhS (STEP 5) to set the second drying constant table as the next drying constant table, and the results of the sensing and estimated operation are reflected in the operation control from the next time onwards, so the accuracy of the clothes drying end judgment is improved, eliminating unnecessary operation and improving energy saving and usability.

The second drying constant table correction control involves the control means 4 comparing the operation start temperature TempS and operation start humidity RhS at the start of the clothes drying operation with the experimental results when the drying constant table was created, analyzing the difference from the experimental environment, correcting the drying constant Dx, correcting it to the second drying constant table, which will be the next drying constant table, and saving it in the memory unit 9a of the microcomputer 9. Therefore, repeated learning and correction can be expected to improve accuracy.

Specifically, when the operation start humidity RhS is on the low side compared to the experimental results, the control means 4 determines that the drying load is low and the standard clothes drying operation time is too long, and corrects the drying constant Dx in a negative direction, and when it is on the high humidity side, the control means 4 determines that the drying load is high and the standard clothes drying operation time is insufficient, and corrects the drying constant Dx in a positive direction. When the operation start temperature TempS is on the high side compared to the experimental results, the control means 4 determines that the drying load is low and the standard clothes drying operation time is too long, and corrects the drying constant Dx in a negative direction, and when it is on the low humidity side, the control means 4 determines that the drying load is high and the standard clothes drying operation time is insufficient, and corrects the drying constant Dx in a positive direction.

(Embodiment 3)
The third dryness constant table correction control according to the third embodiment of the present invention will be described with reference to Fig. 5. The same components as those in the first embodiment (Fig. 3) are given the same reference numerals, and detailed description thereof will be omitted.

In STEP 117, the control means 4 determines the end of the clothes drying operation, stops the clothes drying operation, and at the end of the clothes drying operation, stores the drying operation time TimeE, which is the operation time from the start of the clothes drying operation to the end of the operation, in the memory unit 9a (STEP 7). The control means 4 performs third drying constant table correction control (STEP 9) to correct the first drying constant table based on the drying operation time TimeE (STEP 8) to set the third drying constant table, which will be the next drying constant table, and the results of the sensing and estimated operation are reflected in the operation control from the next time onwards, so the accuracy of the clothes drying end determination is improved, eliminating unnecessary operation and improving energy efficiency and usability.

The third drying constant table correction control involves the control means 4 comparing the drying operation time TimeE, which is the operation time from the start to the end of the clothes drying operation, with the experimental results when the drying constant table was created, analyzing the difference with the experimental environment, correcting the drying constant Dx, and correcting it to the third drying constant table, which will be the next drying constant table, and saving it in the memory unit 9a of the microcomputer 9. Therefore, repeated learning and correction can be expected to improve accuracy.

Specifically, when the drying operation time TimeE, which is the operation time from the start to the end of the clothes drying operation, is on the long side compared to the experimental results, the control means 4 determines that the drying load is high and the standard clothes drying operation time was insufficient, and corrects the drying constant Dx in a positive direction, and when it is on the short side, the control means 4 determines that the drying load is low and the standard clothes drying operation time was too long, and corrects the drying constant Dx in a negative direction.

(Embodiment 4)
The fourth dryness constant table correction control according to the fourth embodiment of the present invention will be described with reference to Fig. 6. The same components as those in the first embodiment (Fig. 3) are given the same reference numerals, and detailed description thereof will be omitted.

In STEP 115, the control means 4 detects the humidity during operation Rh(n), which is the humidity at each predetermined time interval, using the humidity detection means 6, and compares it with the previous humidity during operation Rh(n-1) (STEP 10). Then, the control means 4 stores the time TimeM from the start of the clothes drying operation until the humidity during operation starts to decrease in the memory unit 9a (STEP 11). The control means 4 performs a fourth drying constant table correction control (STEP 13) to correct the first drying constant table based on the time TimeM until the humidity during operation starts to decrease (STEP 12) to obtain the fourth drying constant table, which will be the next drying constant table. The results of the sensing and estimated operation are reflected in the operation control from the next time onwards, so the accuracy of the clothes drying end judgment is improved, which eliminates unnecessary operation and improves energy saving and usability.

The fourth drying constant table correction control involves the control means 4 comparing the time TimeM from the start of the clothes drying operation until the humidity starts to decrease during operation with the experimental results when the drying constant table was created, analyzing the difference with the experimental environment, correcting the drying constant Dx, and correcting it to the fourth drying constant table, which will be the next drying constant table, and saving it in the memory unit 9a of the microcomputer 9. Therefore, repeated learning and correction can be expected to improve accuracy.

Specifically, when the time TimeM from the start of the clothes drying operation until the humidity starts to decrease during operation is on the long side compared to the experimental results, the control means 4 determines that the drying load is high and the standard clothes drying operation time is insufficient, and corrects the drying constant Dx in a positive direction, and when it is on the short side, determines that the drying load is low and the standard clothes drying operation time is too long, and corrects the drying constant Dx in a negative direction.

(Embodiment 5)
The fifth dryness constant table correction control according to the fifth embodiment of the present invention will be described with reference to Fig. 7. The same components as those in the first embodiment (Fig. 3) are given the same reference numerals, and detailed description thereof will be omitted.

In STEP 117, the control means 4 determines the end of the clothes drying operation, stops the clothes drying operation, detects the temperature TempA after a certain time has elapsed since the clothes drying operation was stopped by the temperature detection means 5, detects the humidity RhA after a certain time has elapsed since the clothes drying operation was stopped by the humidity detection means 6, and stores the temperature TempA after the certain time has elapsed and the humidity RhA after the certain time has elapsed in the memory unit 9a (STEP 14). The control means 4 performs a fifth drying constant table correction control (STEP 16) to correct the first drying constant table based on the temperature TempA after the certain time has elapsed and the humidity RhA after the certain time has elapsed (STEP 15) to set the fifth drying constant table, which will be the next drying constant table. The results of the sensing and estimated operation are reflected in the operation control from the next time onwards, so the accuracy of the clothes drying end judgment is improved, which eliminates unnecessary operation and improves energy saving and usability.

The fifth drying constant table correction control involves the control means 4 comparing the temperature TempA after a certain time has elapsed since the clothes drying operation was stopped and the humidity RhA with the experimental results when the drying constant table was created, analyzing the difference from the experimental environment, correcting the drying constant Dx, and correcting it to the fifth drying constant table, which will be the next drying constant table, and saving it in the memory unit 9a of the microcomputer 9. Therefore, repeated learning and correction can be expected to improve accuracy.

Specifically, when the temperature TempA after a certain time has elapsed since the clothes drying operation was stopped is compared with the experimental results and is found to be on the high side, the control means 4 determines that the clothes drying operation time was too long and corrects the drying constant Dx in a negative direction, and when it is found to be on the low side, it determines that the clothes drying operation time was insufficient and corrects the drying constant Dx in a positive direction.

When the humidity RhA after a certain time has elapsed since the clothes drying operation was stopped is compared with the experimental results and is found to be on the low humidity side, the control means 4 determines that the clothes drying operation time was too long and corrects the drying constant Dx in a negative direction, and when it is found to be on the high humidity side, it determines that the clothes drying operation time was insufficient and corrects the drying constant Dx in a positive direction.

According to the present invention, the results of sensing and estimated operation are reflected in the operation control, improving the accuracy of the determination of the end of clothes drying, eliminating unnecessary operation, improving energy efficiency and improving usability, making it useful as a home dehumidifier used for drying clothes.

REFERENCE SIGNS LIST 1 Dehumidifier 2 Dehumidifying means 3 Air blowing means 4 Control means 5 Temperature detection means 6 Humidity detection means 7 Operation section 8 Clothes drying switch 9 Microcomputer 9a Memory section

Claims (5)

A dehumidifying means provided in the main body case;
A blowing means for blowing air to the dehumidifying means;
A control means for controlling the operation of the dehumidifying means and the air blowing means;
a temperature detection means for detecting an ambient temperature of the main body case;
A dehumidifying device including a humidity detection means for detecting the ambient humidity of the main body case,
The control means
a clothes drying operation in which the dehumidifying means and the air blowing means are operated,
At the start of the clothes drying operation,
Detecting an operation start temperature by the temperature detection means;
The humidity detection means detects the humidity at the start of operation,
performing a drying constant initial setting for setting an initial drying constant Dx for determining the end of the clothes drying operation based on the operation start temperature, the operation start humidity, and a drying constant table that is a reference for the operation time of the clothes drying operation;
During the clothes drying operation,
Detecting the temperature during operation by the temperature detection means,
The humidity detection means detects humidity during operation,
performing a drying constant correction by correcting the initial drying constant Dx based on the mid-operation temperature and the mid-operation humidity to obtain a corrected drying constant Dx;
determining whether or not the clothes drying operation is to be completed based on the corrected drying constant Dx, the temperature during operation, and the humidity during operation;
The clothes drying operation is stopped, and at the end of the clothes drying operation,
Detecting an operation end temperature by the temperature detection means;
The humidity detection means detects the humidity at the end of operation,
a first drying constant table correction control is performed to correct the drying constant table based on the corrected drying constant Dx, the operation end temperature, and the operation end humidity to obtain a first drying constant table which will be the next drying constant table. The control means stores the operation start temperature and the operation start humidity of the clothes drying operation in a memory unit,
2. The dehumidifier according to claim 1, further comprising: a second drying constant table correction control for correcting the first drying constant table based on the operation start temperature and the operation start humidity to obtain a second drying constant table that will be the next drying constant table. The control means stores a drying operation time, which is an operation time of the clothes drying operation, in a storage unit,
2. The dehumidifier according to claim 1, further comprising a third drying constant table correction control for correcting the first drying constant table based on the drying operation time to a third drying constant table which is a next drying constant table. The control means
The humidity detection means detects humidity during operation at predetermined time intervals,
A decreasing operation time, which is a time from the start of the clothes drying operation to the start of the humidity decreasing during the operation, is stored in a memory unit;
2. The dehumidifier according to claim 1, further comprising a fourth dryness constant table correction control for correcting the first dryness constant table based on the reduced operation time to a fourth dryness constant table which is to be the next dryness constant table. The control means
The humidity detection means stores a post-operation humidity, which is the humidity in the room after a certain period of time has elapsed since the clothes drying operation was stopped,
The humidity detection means stores a post-operation temperature, which is the room temperature after a certain period of time has elapsed since the clothes drying operation was stopped;
2. The dehumidifier according to claim 1, further comprising a fifth drying constant table correction control for correcting the first drying constant table based on the post-operation humidity and the post-operation temperature to obtain a fifth drying constant table which will be the next drying constant table.

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