TWI564520B - Dehumidifier - Google Patents

Description

dehumidifier

The present invention relates to a dehumidifier for removing moisture in a room, and more particularly to a dehumidifier for drying laundry such as clothes that are dried indoors.

In the past, there has been a dehumidifier suitable for indoor dehumidification and drying of washed clothes (see, for example, Patent Document 1). In this dehumidifier, an intake port and an air outlet are provided in the main body, and an evaporator, a condenser, and a multi-blade fan that blows dry air from the air outlet are provided in the body. Further, in this dehumidifier, a wind direction plate for blowing dry air in a multi-directional direction is provided on the inside of the air outlet, and a motor for driving the wind direction plate to rotate is provided. According to this configuration, the dry air heated by the evaporator or the condenser is blown out from the air outlet to the inside of the room.

[Advanced technical literature] [Patent Literature]

Patent Document 1: Japanese Patent Laid-Open No. Hei 7-139759

However, the configuration described in Patent Document 1 is not an apparatus that performs an operation control of appropriate air blowing or dehumidification in response to a situation around the dehumidifier, but is energy-saving. Sexual problem.

In order to solve the above problems, an object of the present invention is to provide a dehumidifier that performs appropriate dehumidification control in response to conditions around the dehumidifier.

In order to solve the problem, the dehumidification mechanism includes a casing, a blowing means for drawing indoor air into the casing and blowing it to the outside, and a dehumidification means for removing moisture from the indoor air sucked into the casing; and measuring the temperature of the indoor air. Air temperature detecting means; the wind direction variable means, when the dry air after removing the moisture by the dehumidifying means is blown out to the outside of the casing, the wind direction of the dry air can be changed; the surface temperature detecting means is detected a surface temperature at a portion of the direction in which the dry air is blown; and a control means for controlling the respective means. The control means divides the range in which the wind direction variable means can be blown into a plurality of blocks, and detects the surface temperature for each block by the surface temperature detecting means, and obtains the temperature of the indoor air and the surface temperature. The temperature difference is compared with the predetermined first judgment temperature, thereby judging whether or not the object to be dried is located in the block.

By the present invention, a dehumidifier is obtained which is capable of performing appropriate dehumidification control in accordance with the situation around the dehumidifier.

1‧‧‧wind direction variable means

1a‧‧‧Longitudinal louver

1b‧‧‧Horizontal louver

1c‧‧‧vertical variable motor

1d‧‧‧transverse variable motor

2‧‧‧Send fan

2a‧‧‧Fan motor

3‧‧‧temperature sensor

4‧‧‧Humidity sensor

5‧‧‧Dehumidification device

6‧‧‧Infrared sensor

6a‧‧‧Infrared absorption film

6b‧‧‧Thermistor

7‧‧‧Control circuit

7a‧‧‧Input circuit

7b‧‧‧Output circuit

7c‧‧‧CPU

7d‧‧‧Memory Department

7e‧‧‧Timekeeping Department

8‧‧‧Operation switch

12‧‧‧ Display Department

100‧‧‧shell

101‧‧‧Inhalation

102‧‧‧Water storage tank

103‧‧‧Exhaust port

200‧‧‧Full scan range

201‧‧‧Division area

J‧‧‧Dehumidifier

P‧‧‧ indoor air

Q‧‧‧dry air

Fig. 1 is a perspective view showing the appearance of a dehumidifier of the first embodiment.

Fig. 2 is a schematic block diagram showing the internal structure of the dehumidifier of the first embodiment.

Fig. 3 is a schematic perspective view of a variable wind direction means.

Fig. 4 is a control block diagram of the dehumidifier of the first embodiment.

Fig. 5 is a view showing a detectable range of the infrared sensor of the first embodiment.

Fig. 6 is a view showing an example of a map of the object to be dried R of the first embodiment.

(a) is a conceptual diagram of the detected data of the object to be dried R measured by the infrared sensor before the drying operation in the first embodiment, and (b) is a state in which the predetermined time has elapsed after the drying operation of the first embodiment. A conceptual diagram of the detected data of the object R to be measured by the infrared sensor.

Fig. 8 is a first half of the flowchart showing the operation of the dehumidifier in the clothes drying operation of the first embodiment.

Fig. 9 is a second half of the flowchart showing the operation of the dehumidifier in the clothes drying operation of the first embodiment.

Fig. 10 is a view showing an example of window determination in a normal operation.

Fig. 11(a) shows an example of the detection of the laundry after the step S4 in the first embodiment, and (b) shows an example of the determination of the window after the step S11 in the first embodiment.

Fig. 12 is a first half of the flowchart showing the operation of the dehumidifier in the clothes drying operation of the second embodiment.

Fig. 13 is a second half of the flowchart showing the operation of the dehumidifier in the clothes drying operation of the second embodiment.

Fig. 14 is a first half of the flowchart showing the operation of the dehumidifier in the clothes drying operation of the third embodiment.

Fig. 15 is a second half of the flowchart showing the operation of the dehumidifier in the clothes drying operation of the third embodiment.

(Embodiment 1)

Hereinafter, the first embodiment will be described with reference to the first to eleventh drawings.

Referring to Fig. 1, the outer casing of the dehumidifier J is constituted by a self-supporting dehumidifier casing 100 (hereinafter referred to as a casing 100).

The suction port 101 for taking in the indoor air P into the inside and the exhaust port 103 for discharging the dry air Q from which the moisture has been removed from the casing 100 are opened on the casing 100. Further, inside the casing 100, a water storage tank 102 is provided which stores moisture removed from the air taken in from the suction port 101.

The suction port 101 is opened on the back surface of the casing 100, and a screen for preventing dust from intruding into the inside of the casing 100 is provided in the opening.

A wind direction variable means 1 for changing the wind direction of the dry air Q is provided in the exhaust port 103. The wind direction variable means 1 is composed of a longitudinal direction louver 1a in which the wind direction in the vertical direction is changed, and a horizontal direction louver 1b which can change the horizontal direction. Further, the wind direction variable means 1 is provided with an infrared sensor 6 (surface temperature detecting means) for measuring the surface temperature of the object in a non-contact manner.

The water storage tank 102 is installed to be detachable from the inside of the casing 100.

Further, referring to Fig. 2, a blower 2 (air supply means) for taking in the indoor air P from the suction port 101 and generating an air flow for discharging the dry air Q from the exhaust port 103 is provided inside the dehumidifier J; The fan motor 2a that rotates the blower fan 2; the temperature sensor 3 (temperature detecting means) that detects the temperature of the indoor air P sucked from the suction port 101; and the humidity sensor 4 that detects the humidity of the indoor air P ( Humidity detecting means); dehumidifying means 5 (dehumidifying means) for removing moisture contained in the indoor air P to generate dry air Q; longitudinal variable motor 1c which makes the longitudinal louver 1a variable in the vertical direction; The direction louver 1b is a horizontal direction variable motor 1d that is variable in the horizontal direction; an infrared sensor as a surface temperature detecting means 6; a control circuit 7 as a control means for controlling each element.

The dehumidifying device 5 is located in the air path from the suction port 101 to the exhaust port 103, and is a device that removes moisture from the air and condenses it. The means used in the dehumidifying apparatus 5 is, for example, a method of constituting a heat pump circuit and condensing moisture in the air in the evaporator, or a desiccant for condensing moisture in the air removed by the adsorbent by a heat exchanger (Desiccant) ) Ways, etc.

The moisture removed from the indoor air P by the dehumidifying device 5 is condensed water C and accumulated in the water storage tank 102, and the air after the moisture is removed becomes the dry air Q.

Then, referring to Figures 3 and 4, the longitudinal louver 1a constituting the wind direction variable means 1 has a rectangular opening extending in the width direction of the casing 100, and is configured to be substantially variable in the longitudinal direction described above. The rotation axis of the motor 1c is such that the axis changes in the vertical direction.

Thereby, the longitudinal louver plate 1a is configured such that the wind direction can be changed in the longitudinal direction (up and down direction).

Further, the horizontal louver 1b is configured to be disposed at equal intervals in the longitudinal louver 1a, and is axially supported on the inner side opposite to the opening of the longitudinal louver 1a so as to be horizontally changeable, and the lateral direction The driving of the variable motor 1d is interlocked.

Thereby, the louver plate 1b is configured such that the wind direction can be changed in the lateral direction (left-right direction).

The infrared sensor 6 is attached to one surface of the lateral louver 1b disposed at the center of the longitudinal louver 1a.

Thereby, the detection range of the surface temperature of the infrared ray sensor 6 is almost the same as the direction of the dry air Q which is changed by the wind direction variable means 1. That is, infrared The line sensor 6 can detect the surface temperature of the region within the range in which the wind direction variable means 1 can blow air.

This infrared sensor 6 employs, for example, a device that utilizes a thermal power effect, an infrared ray absorbing film 6a that receives heat radiation (infrared rays) emitted from a surface of a predetermined region, and a thermal resistor that detects the temperature of the infrared absorbing film 6a. 6b (see Figure 3).

In the infrared sensor 6, the temperature (warm junction) of the heat sensitive portion of the infrared absorbing film 6a that absorbs heat and absorbs heat, and the temperature (cold junction) of the infrared absorbing film 6a detected by the thermistor 6b The difference is converted into an electric signal such as a voltage, and is input to the control circuit 7 to be described later. The surface temperature of a predetermined area can be judged by the magnitude of the electric signal.

In the present embodiment, the infrared sensor 6 is used to distinguish the position of the object to be dried R such as a wet laundry from the difference in the surface temperature of the detected object, and the non-drying object that is not the object to be dried. The location of the window of the object.

Here, as shown in FIG. 5, the detectable area of the infrared sensor 6 is the full scan range 200. The full scan range 200 is a planar range extending in the lateral direction (horizontal direction) and the vertical direction (vertical direction). In the following description, this range is referred to as a detectable area A.

The infrared sensor 6 is controlled to divide into a plurality of divided regions (each blocks) 201 in the horizontal direction and the vertical direction for the full scan range 200, and the surface temperature thereof is detected. Thereby, a detailed temperature map can be generated for a wide range of detectable areas A.

That is, referring to Figures 6 and 7, the control circuit 7 separates the detectable area A of the infrared sensor 6 into blocks of a predetermined size and judges each block. The surface temperature is thereby used to judge the position or dryness of the object R to be dried.

For example, it is detected that the portion B covered by the shadow in the detectable area A is a block whose temperature is lower than that of the other portion. In addition, the thicker portion of the figure indicates that the temperature is lower.

Further, the control circuit 7 determines that the portion having a low surface temperature has laundry, and controls the direction of the wind direction changing means 1 or the operation of the fan motor during the dehumidifying operation so that the dehumidified air is efficiently blown to the position.

Further, the control circuit 7 memorizes the result of determining the position of the laundry that has been executed in the past and the position determination of the window for each block (divided area) (details will be described later).

Next, referring to Fig. 4, the control circuit 7 and various sensors and electronic components connected to the control circuit 7 will be described.

The control circuit 7 controls the operation of the entire dehumidifier J based on input from various sensors or various switches and a predetermined algorithm, and includes an input circuit 7a, an output circuit 7b, a CPU 7c, and a memory unit 7d (memory means). , timing unit 7e. The timer unit 7e is an operation time measuring means for measuring the operation time from the start of the operation.

Furthermore, the memory unit 7d stores the above algorithm for controlling each part of the dehumidifier J. The algorithm includes: an operation control program for determining an operation control based on inputs of various sensors or switches, or a detection signal based on the temperature sensor 3 and the humidity sensor 4, and an output of the timing unit 7e to determine The running time of the running time determines the program.

Further, the memory unit 7d also memorizes the position determination data (operation history, which will be described later in detail) of the window and the laundry which are executed during the wet operation.

The control circuit 7 thus constructed is connected through the input circuit 7a. The operation switch 8 for opening/closing the operation of the dehumidifier J, the temperature sensor 3, the humidity sensor 4, and the infrared sensor 6.

Further, the control circuit 7 is connected to the electric circuit such as the display unit 12, the dehumidifying device 5, the fan motor 2a, the longitudinal variable motor 1c, and the lateral variable motor 1d which notify the state of the dehumidifier through the output circuit 7b.

When the dehumidification mode is selected by the operation of the operation switch 8 constituting the operation unit, the control circuit 7 drives the wind direction variable means 1 to blow air from the exhaust port 103, drives the fan motor 2a to rotate the blower fan 2, and drives The dehumidifying device 5 makes the humidity in the room into an optimum humidity.

Further, the control circuit 7 drives the longitudinal direction variable motor 1c and the lateral direction variable motor 1d of the wind direction variable means 1 so as to blow air in the direction of the desired area of the room.

Thereby, the indoor air P is sucked into the dehumidifier casing 100 from the suction port 101, and the temperature and humidity of the room are detected by the temperature sensor 3 and the humidity sensor 4, respectively, and then dehumidified by the dehumidifying device 5 to be dried. The air Q is blown out from the exhaust port 103 to the inside of the room.

Next, referring to Figs. 8 and 9, the operation of each part of the dehumidifier J as described above in the drying operation of the clothes will be described. In addition, Figures 8 and 9 are flow charts showing a series of actions, wherein Figure 8 shows the first half of the flow chart and Figure 9 shows the second half of the flow chart.

Further, in the following description, the time measurement, the humidity measurement, and the temperature measurement are performed by the timer unit 7e, the humidity sensor 4, the temperature sensor 3, and the infrared sensor 6, respectively, and the control circuit 7 determines these measurements. The values perform various arithmetic processing and actions of each part.

(washing detection)

First, when the drying operation of the clothes is started, the control circuit 7 starts the initial sampling operation in step S1, and moves to step S2.

Here, in the initial sampling operation, the surface temperature of each divided region (block) obtained by dividing the detectable region A by the infrared sensor 6 is detected, and it is determined that each block as the target is used. Is there an action of a dry object (i.e., laundry) that is to be actively blown with dry air to promote its drying.

Then, in the step S2, the control circuit 7 determines whether or not the number of times the laundry is present in the block to be sampled in the clothing drying operation performed in the past is equal to or greater than a predetermined number of times.

In addition, the memory unit 7d accumulates the number of times that each block is determined to have laundry in the drying operation performed in the past, and stores it as data (judgment history), and the control circuit 7 judges whether or not the number of times is based on the data. the above.

In step S2, if it is determined that the number of times of laundry in the block to be sampled is less than the predetermined number of times in the past drying operation, the process proceeds to step S3, and the determination temperature (first determination temperature) is set. It is the normal value T1 and moves to step S5.

In addition, in the case of the laundry drying operation performed in the past, it is determined that the number of times of laundry in the block to be sampled is equal to or greater than the predetermined number of times, the process proceeds to step S4, and the temperature is judged (first judgment) The temperature is set to a special value T2 smaller than T1, and the process proceeds to step S5 (T1>T2).

Then, in step S5, "△T = room temperature - measured value" is obtained for each block, and compared with the determination temperature set in steps S3, S4 (determination temperature ≦ ΔT?), To determine if there is any laundry in the object block.

In addition, the room temperature is the temperature of the indoor air measured by the temperature sensor 3. The measured value is the surface temperature of the block to be detected by the infrared sensor 6. ΔT is the difference obtained by subtracting the measured value from the room temperature.

Here, since the laundry is wet, its surface temperature is lower than room temperature. In particular, when drying starts with time and the moisture contained in the laundry starts to evaporate, the surface temperature of the laundry is lowered by the heat of evaporation.

That is, a difference ΔT is generated between the room temperature and the measured value of the infrared sensor 6 (the temperature of the target block), and when the difference ΔT is larger, it can be judged that the position of the target block is very large. There may be laundry.

Therefore, in step S5, it is judged whether or not there is laundry in the target block by comparing ΔT with the determination temperature (established threshold value) (determination of temperature ≦ ΔT?).

Further, when a larger value is used as the judgment temperature (determination of the presence or absence of the threshold of the laundry), it is difficult to judge that the laundry exists. That is, if the difference ΔT is larger, it is judged to be larger than the judgment temperature.

On the other hand, when a small value is used as the judgment temperature, it is easy to judge that there is a laundry. That is, the difference ΔT is not too large and is judged to be larger than the judgment temperature.

Therefore, in the past operation, it is determined that the cumulative number of times of laundry is a predetermined number of times or more, and there is a high possibility that the laundry is likely to be washed during this operation. Therefore, the determination temperature is determined to be lower than the normal value of the determination temperature T1. The value is judged by the temperature T2 and compared with the above ΔT.

Therefore, in the past operation, it is determined that the number of accumulated laundry items is equal to or greater than the predetermined number of times, and even when the temperature difference ΔT between the room temperature and the target block is small, it is easy to determine that there is laundry, so that the initial sampling operation can be performed. Early At the stage, it is judged that there is laundry.

In particular, in the initial stage of the start of drying, the moisture contained in the laundry starts to evaporate as time passes, and the surface temperature of the laundry gradually decreases due to the heat of evaporation.

Therefore, in the initial stage of the start of drying, the temperature difference ΔT between the room temperature and the block is small, but if the determination temperature as the threshold is made low, it is possible to determine that the laundry is present at an earlier stage.

As described above, in step S5, when it is detected that there is laundry in the target block, the number of laundry detections of the block is added and memorized, and the process proceeds to step S6.

In step S6, it is judged whether or not the judgment of the presence or absence of washing of all the blocks has been completed. If the judgment of whether or not the laundry is completed is completed, the process proceeds to step S7, and if the determination has not been completed, the process proceeds to step S2 to judge the block which is not determined.

Although the initial sampling operation in steps S1 to S6 will be described above, the initial sampling motion can detect all the blocks in the target for a predetermined number of times, or can be detected repeatedly within a predetermined time.

Further, when the entire block is repeatedly subjected to the initial sampling operation for a predetermined number of times or for a predetermined period of time, the block determined to have the laundry can be skipped, and the presence or absence of the laundry can be judged. This can shorten the time of the action.

Steps S1 to S6 are control flow for detecting the position of the laundry from the difference between the room temperature and the detected temperature of each block, but the surface temperature is lower than the laundry at the position where the laundry is judged to be located. The portion of the room temperature may also include, for example, a window. The window is not the object of drying, it is a non-dry object.

Therefore, by performing the control processing of steps S7 to S14, the block in which the window is located is detected, and a more efficient drying operation of the clothes is realized.

Referring to Fig. 9, in step S7, the control circuit 7 starts the clothes drying operation based on the detection results of steps S1 to S6, and proceeds to step S8.

In the drying operation of the clothes, the direction of the wind direction variable means 1 is controlled, and the dehumidified dry air Q is controlled to be blown from the exhaust port 103 toward the block determined to have laundry. That is, the block determined to have the laundry is used as the air blowing target of the dry air, and the respective portions are controlled so that the dry air Q efficiently flows from the dehumidifier to the direction in which the laundry is located.

Then, in step S8, the surface temperature of the portion located in the block to be blown is measured while the drying operation of the clothes is being performed, and it is determined whether the temperature of the measured value is lower than the window determination temperature Tw (the second determination temperature) ) (measured value <Tw?).

When the measured value is lower than the window determination temperature Tw (window low temperature judgment), the process proceeds to step S9.

When it is determined for the first time that the measured value is lower than the window determination temperature Tw, the timer unit 7e starts the operation after the determination, and starts the calculation of the elapsed time Bx. In addition, when the above judgment is made for the second time, the calculation is continued and the elapsed time is accumulated.

In addition, when the measured value of the surface temperature of the portion of the block to be blown is higher than the window determination temperature Tw, the process proceeds to step S14, and it is determined whether or not the drying operation of the clothes is finished. If it is finished, the drying operation of the clothes is stopped, and if it is not finished, the movement is stopped. Go to step S7 to make a window determination for the block of the next air blowing object.

Further, in step S8, when the surface temperature of the block is higher than the window determination temperature Tw, the counting of the elapsed time Bx is stopped and the data of the elapsed time Bx is reset.

Then, in step S9, if it is determined that the number of windows has not been completed a predetermined number of times in the past drying operation of the clothes in the target block, the process proceeds to step S10 to set the window determination time to B1 of the normal value, and The process proceeds to step S12.

In addition, in step S9, if it is determined that the number of times of windows in the past clothes drying operation in the target block is equal to or greater than the predetermined number of times, the process proceeds to step S11, and the window determination time is set to be shorter than the normal value B1. The special value B2 is passed to step S12 (B1>B2).

Next, in step S12, the window determination times B1 and B2 set in steps S10 and S11 are compared with the elapsed time Bx elapsed from the window low temperature determination. That is, it is judged whether or not the surface temperature of a portion in the target block is continuously lower than the window determination temperature for a predetermined time or longer.

Here, the surface temperature of the laundry rises as the drying progresses, but if it is a window, the surface temperature does not rise even if the drying operation of the clothes continues. Therefore, if the window determination time passes the window determination time B or more, or if the window judges the temperature (the state where the temperature is low), it is judged that the window is located in the block.

Further, if the time (time Bx) of the window determination temperature is less than the window determination time B (B1 or B2), the process proceeds to step S14, and it is judged whether or not the drying operation of the clothes is finished. If it is finished, the drying operation of the clothes is stopped. When it is finished, the process proceeds to step S7 to make a window judgment for the block of the next air blowing object.

Further, when the time (elapsed time Bx) lower than the window determination temperature is equal to or higher than the window determination time B (B1 or B2), the process proceeds to step S13. Then, in step S13, it is determined that it is detected that there is a window in the target block, and the The number of window detections of the block is added and stored, and the process proceeds to step S14.

In step S14, it is judged whether or not the clothes drying operation is completed, and if it is finished, the clothes drying operation is stopped, and if it is not completed, the process proceeds to step S7, and the window determination is performed for the block of the next air blowing target.

In addition, during the drying operation of the clothes being executed, it is controlled such that the dry air is not actively blown to the block determined as the position of the window as described above, and the dry air is blown to the position determined to be the laundry. Block.

As described above, the steps S7 to S13 are characterized in that, in the result of the drying operation of the clothes performed in the past, it is determined that there is a block having a predetermined number of times or more as the position of the window, and it is determined that it is also in this operation. There are windows. Therefore, for such a block, the judgment time B2 of the special value of the judgment time B1 which is shorter than the normal value is used, and is compared with the elapsed time Bx.

Thereby, the position of the window which is judged to be confused with the laundry can be estimated earlier. Thereby, in the drying operation of the clothes which is continued thereafter, the dry air is not actively blown to the direction of the block which is determined to be the position of the window, and the dry air is focusedly blown to the block which is judged to be the position of the laundry. Direction, and it is possible to carry out the drying operation of the clothes more efficiently.

Here, the determination of the presence or absence of the window and the washing household will be described using Figs. 10 and 11. In Fig. 10 and Fig. 11, it is assumed that the laundry has not dried after 360 minutes, but has risen above the initial temperature. Further, in the examples shown in Figs. 10 and 11, it is exemplified that in the detectable area A composed of the blocks 1 to 25, the blocks 9, 12, 13, 14, 17, 18 are washed. The location of the object, and blocks 2, 3, 22, 23, 24 are the locations of the windows.

(in the case of normal action)

Fig. 10 shows an example of window determination in normal operation. In addition, the window determination in the normal operation is a window determination operation in a state where the window determination is not performed in the past operation.

State 1: At the point of initial operation, the difference between the laundry (blocks 9, 12, 13, 14, 17, 18) and the windows (blocks 2, 3, 22, 23, 24) is not determined, so The window is for air supply.

State 2: When 240 minutes have elapsed, the difference between the laundry (blocks 9, 12, 13, 14, 17, 18) and the windows (blocks 2, 3, 22, 23, 24) has not been determined, so the window is also Air supply.

State 3: When 360 minutes have elapsed, it is possible to distinguish only the two by the difference in temperature between the laundry and the window, and only blow the laundry (blocks 9, 12, 13, 14, 17, 18). The memory is judged as a block of windows (blocks 2, 3, 22, 23, 24).

(When the laundry is detected through the step S4)

Fig. 11(a) shows an example of the detection of the laundry after the step S4.

State 1: It shows an example in which all the blocks are subjected to the determination of the temperature by the normal value T1 in step S3. In this case, no laundry (blocks 13 and 14) that should have been detected was detected.

State 2: shows an example in which all the blocks are judged by the special value T2 in step S4. In this case, the windows (blocks 2, 3, 22, 23, 24) were not detected and the laundry and windows could not be distinguished.

State 3: Using the judgment result of the presence or absence of the laundry performed in the past operation, the block in which the laundry is easily stored (for example, the blocks 9, 12, 13, 14, 17, 18) is memorized in advance, and the block that has been memorized is passed. In step S4, the special value T2 is used as the judgment temperature, and for other blocks, the normal value T1 is used as the judgment temperature in step S3. An example of this. In this case, the laundry can be accurately detected (blocks 9, 12, 13, 14, 17, 18).

As described above, the judgment of the block is made based on the presence or absence of the laundry to be executed during the past operation, and the block (e.g., the blocks 9, 12, 13, 14, 17, 18) which is easily washed is recorded in advance. It is a special value (step S4). Thereby, it is easy to make a judgment that the block to be judged has laundry.

Thereby, it is possible to control so that the laundry is efficiently blown at an early stage.

(Example of window judgment by step S11)

Fig. 11(b) shows an example in which the special value is used as the window determination time (step S11) of the blocks 2, 3, 22, 23, 24 which have been determined to have the number of times of the window a predetermined number of times or more.

State 1: At the time of the initial action, the difference between the laundry (blocks 9, 12, 13, 14, 17, 18) and the windows (blocks 2, 3, 22, 23, 24) is not determined.

State 2: When 240 minutes have elapsed, it is possible to distinguish between the laundry by the difference in temperature between the laundry and the window, and only the laundry (blocks 9, 12, 13, 14, 17, 18) is correctly detected.

As described above, in the past, it is determined that the number of times of the window is equal to or greater than the predetermined number of times, and the window determination time is determined by a special value that is shorter than usual (S11). Therefore, when 240 minutes have elapsed (the window is judged by the normal operation ( 360 minutes) In the early stage, the block (blocks 2, 3, 22, 23, 24) which is easy to be judged by the window is judged as a window, and then the air supply is focused on the laundry. That is, it can be controlled so that the laundry is efficiently blown at an early stage.

(Embodiment 2)

Hereinafter, the second embodiment will be described with reference to the twelfth and thirteenth drawings. Figures 12 and 13 are flow charts showing a series of actions, with Figure 12 showing the first half of the flow chart and Figure 13 showing the second half of the flow chart.

In addition, since the hardware configuration of the present embodiment is the same as that of the dehumidifier J of the first embodiment, the description thereof will be omitted.

(washing detection)

First, when the drying operation of the clothes is started, the control circuit 7 starts the initial sampling operation in step S21, and the process proceeds to step S22.

In the initial sampling operation, the surface temperature of each divided region (block) obtained by dividing the detectable region A by the infrared sensor 6 is detected, and it is determined whether or not there is laundry in each block as the target. Actions.

Then, in the step S22, the control circuit 7 determines whether or not the number of times the laundry is present in the block to be sampled in the clothing drying operation performed in the past is equal to or greater than a predetermined number of times.

In addition, the memory unit 7d accumulates the number of times that each of the blocks is determined to have laundry in the drying operation performed in the past, and stores it as data. The control circuit 7 determines whether or not the number of times is above the number based on the data.

In step S22, if it is determined that the number of times of laundry is less than the predetermined number of times in the past, the process proceeds to step S23, and the determination temperature (first determination temperature) is set to the normal value T1, and the process proceeds to step S25.

In addition, in step S22, if it is determined that the number of times of laundry is equal to or greater than the predetermined number of times in the past, the process proceeds to step S24, and the determination temperature (first determination temperature) is set to a special value T2 smaller than T1, and the process proceeds to Step S25 (T1>T2).

Then, in step S25, "△T = room temperature - measured value" is obtained for each block, and compared with the determination temperature set in steps S23, S24 (determination temperature ≦ ΔT?), To determine if there is any laundry in the object block.

In addition, the room temperature is the temperature of the indoor air measured by the temperature sensor 3. The measured value is the surface temperature of the block to be detected by the infrared sensor 6. ΔT is the difference obtained by subtracting the measured value from the room temperature.

Here, since the laundry is wet, its surface temperature is lower than room temperature. In particular, when drying starts with time and the moisture contained in the laundry starts to evaporate, the surface temperature of the laundry is lowered by the heat of evaporation.

That is, a difference ΔT is generated between the room temperature and the measured value of the infrared sensor 6 (the temperature of the target block), and when the difference ΔT is larger, it can be judged that the position of the target block is very large. There may be laundry.

Therefore, in step S25, it is judged whether or not there is laundry in the target block by comparing ΔT with the judgment temperature (established threshold value) (determination of temperature ≦ ΔT?).

Further, when a larger value is used as the judgment temperature (determination of the presence or absence of the threshold of the laundry), it is difficult to judge that the laundry exists. That is, if the difference ΔT is larger, it is judged to be larger than the judgment temperature.

On the other hand, when a small value is used as the judgment temperature, it is easy to judge that there is a laundry. That is, since it is judged that the temperature is a small value, the difference ΔT is not too large and is judged to be larger than the judgment temperature.

Therefore, in the past operation, it is determined that the cumulative number of times of laundry is a predetermined number of times or more, and there is a high possibility that the laundry is likely to be washed during this operation. Therefore, the determination temperature is determined to be lower than the normal value of the determination temperature T1. Value judgment Degree T2 and compare it to ΔT as described above.

Therefore, in the past operation, it is determined that the number of accumulated laundry items is equal to or greater than the predetermined number of times, and even when the temperature difference ΔT between the room temperature and the target block is small, it is easy to determine that there is laundry, so that the initial sampling operation can be performed. In the early stages, it was judged that there was laundry.

In particular, in the initial stage of the start of drying, the moisture contained in the laundry starts to evaporate as time passes, and the surface temperature of the laundry gradually decreases due to the heat of evaporation.

Therefore, in the initial stage of the start of drying, the temperature difference ΔT between the room temperature and the block is small, but if the determination temperature as the threshold is made low, it is possible to determine that the laundry is present at an earlier stage.

As described above, in step S25, when it is detected that there is laundry in the target block, the number of laundry detections of the block is added and memorized, and the process proceeds to step S26.

In step S26, it is judged whether or not the judgment of whether or not the laundry of all the blocks has been completed has been completed. If the determination of whether or not the laundry is completed is completed, the process proceeds to step S27, and if the determination has not been completed, the process proceeds to step S22 to determine the block that is not determined.

In the above, the initial sampling operation in steps S21 to S26 will be described. However, the initial sampling motion can detect all the blocks in the target for a predetermined number of times, or can be detected repeatedly within a predetermined time.

Further, when the entire block is repeatedly subjected to the initial sampling operation for a predetermined number of times or for a predetermined period of time, the block determined to have the laundry can be skipped, and the presence or absence of the laundry can be judged. This can shorten the time of the action.

From step S21 to S26, it is determined by room temperature and the temperature of each block. The difference in degree is the control flow for detecting the position of the laundry, but it is also possible to include, for example, a window at a position where the laundry is judged to be the same as the surface temperature of the laundry.

Therefore, by performing the control processing of steps S27 to S39, the block in which the window is located is detected, and a more efficient drying operation of the clothes is realized.

In the step S27, it is determined whether or not there is a predetermined ratio (for example, 90%) or more of the entire block determined to have a window in the clothes drying operation performed in the previous execution.

When there is a laundry having a predetermined ratio or more, the process proceeds to step S28, and it is assumed that the drying operation of the clothes performed this time is performed in the same environment as the previous time, and the process proceeds to step S30.

When the ratio of the laundry is less than the predetermined ratio, the process proceeds to step S29, and it is assumed that the drying operation of the clothes to be performed this time is performed in a different environment from the previous one, and the process proceeds to step S30.

In addition, the environment referred to herein is an environment in which the dehumidifier J is used, and an example for the case in the same environment is: in the same room as the previous time, the clothes are oriented in almost the same direction, similar to the previous configuration. The way the mode is configured.

On the other hand, the so-called different environments are intended to be used in a room different from the previous one, or in a case where the clothes are arranged differently from the previous configuration.

Next, referring to Fig. 13, in step S30, the control circuit 7 starts the clothes drying operation based on the detection results of steps S21 to S26, and proceeds to step S31.

Then, in step S31, while performing the drying operation of the clothes, the measurement is performed. The surface temperature of the portion located in the block to be blown, and whether the temperature of the measured value is lower than the window determination temperature Tw (second determination temperature) (measured value <Tw?).

When the measured value is lower than the window determination temperature Tw (window low temperature judgment), the process proceeds to step S32.

When it is determined for the first time that the measured value is lower than the window determination temperature Tw, the timer unit 7e starts the operation after the determination, and starts the calculation of the elapsed time Bx. In addition, when the above judgment is made for the second time, the calculation is continued and the elapsed time is accumulated.

In addition, when the measured value of the surface temperature of the portion in the block to be blown is higher than the window determination temperature Tw, the process proceeds to step S39, and it is determined whether or not the drying operation of the clothes is finished. If it is finished, the drying operation of the clothes is stopped, and if it is not finished, the movement is stopped. Go to step S30 to make a window determination for the block for the next air blowing object.

Further, in step S31, when the surface temperature of the block is higher than the window determination temperature Tw, the counting of the elapsed time Bx is stopped and the data of the elapsed time Bx is reset.

Then, in step S32, based on the determinations of steps S27 to S29, it is determined whether or not the state of the clothes drying operation performed this time is the same as that of the past (previous time).

If it is not the same environment as in the past, the process proceeds to step S33, the window determination time is set to B1 of the normal value, and the process proceeds to step S37.

If it is the same environment as the past, the process proceeds to step S34. In this step S34, if it is determined that the number of windows has not been completed a predetermined number of times in the past clothes drying operation in the target block, the process proceeds to step S35, the window determination time is set to the normal value B1, and the process proceeds to Step S37.

In addition, in step S34, if in the object block in the past clothes When it is determined that the number of times of the window is equal to or greater than the predetermined number of times in the drying operation, the process proceeds to step S36, and the window determination time is set to a special value B2 shorter than the normal value B1, and the process proceeds to step S37 (B1>B2).

Next, in step S37, the window determination times B1 and B2 set in steps S33, S35, and S36 are compared with the elapsed time Bx elapsed from the window low temperature determination. That is, it is judged whether or not the surface temperature of a portion in the target block is continuously lower than the window determination temperature for a predetermined time or longer.

Here, the surface temperature of the laundry rises as the drying progresses, but if it is a window, the surface temperature does not rise even if the drying operation of the clothes continues. Therefore, if the window determination time passes the window determination time B or more, or if the window judges the temperature (the state where the temperature is low), it is judged that the window is located in the block.

When the time (the elapsed time Bx) of the window determination temperature is less than the window determination time B (B1 or B2), the process proceeds to step S39, and it is judged whether or not the clothes drying operation is completed. If it is finished, the clothes drying operation is stopped. When it is finished, the process proceeds to step S30 to perform window determination for the block of the next air blowing object.

Further, when the time (elapsed time Bx) lower than the window determination temperature is above the window determination time B (B1 or B2), the process proceeds to step S38. Next, in step S38, it is determined that there is a window in the target block, the number of window detections of the block is added and stored, and the process proceeds to step S39.

In step S39, it is judged whether or not the clothes drying operation is completed, and if it is finished, the clothes drying operation is stopped, and if it is not completed, the process proceeds to step S30, and the window determination is performed for the block of the next air blowing target.

In addition, during the drying operation of the clothes being executed, the control is: not actively The dry air is blown to the block which is judged to be the position of the window as described above, and the dry air is focusedly blown to the block which is judged to be the position of the laundry.

As described above, in the present embodiment, in order to determine whether or not it is in the same environment as the already stored environment, it is confirmed whether or not 90% or more of the blocks regarded as the window position in the window determination performed during the previous operation is the laundry. Object block.

Further, when it is determined that 90% or more is the target block of the laundry, the possibility of being in the same environment as the already stored environment is high, and the special value is used to determine the window for the block which is determined to be the window in the past.

Thereby, the judgment time can be shortened, and the clothes drying operation can be performed efficiently.

(Embodiment 3)

Hereinafter, Embodiment 3 will be described with reference to Figs. 14 and 15 . Figures 14 and 15 are flow charts showing a series of actions, with Figure 14 showing the first half of the flow chart and Figure 15 showing the second half of the flow chart.

In addition, since the hardware configuration of the present embodiment is the same as that of the dehumidifier J of the first embodiment, the description thereof will be omitted.

(washing detection)

First, when the drying operation of the clothes is started, the control circuit 7 starts the initial sampling operation in step S41, and proceeds to step S42.

In the initial sampling operation, the surface temperature of each divided region (block) obtained by dividing the detectable region A by the infrared sensor 6 is detected, and it is determined whether or not there is laundry in each block as the target. Actions.

Then, in step S42, the control circuit 7 determines that it has been executed in the past. In the drying operation of the clothes, it is determined whether or not the number of times of laundry in the block to be sampled is equal to or greater than a predetermined number of times.

In addition, the memory unit 7d accumulates the number of times that each of the blocks is determined to have laundry in the drying operation performed in the past, and stores it as data. The control circuit 7 determines whether or not the number of times is above the number based on the data.

In step S42, if it is determined that the number of times of laundry in the block to be sampled is less than the predetermined number of times in the past drying operation, the process proceeds to step S43, and the determination temperature is set to the normal value T1. The process proceeds to step S45.

In the case of the laundry drying operation performed in the past, it is determined that the number of times of laundry in the block to be sampled is equal to or greater than the predetermined number of times, the process proceeds to step S44, and the temperature is judged (first determination) The temperature is set to a special value T2 smaller than T1, and the process proceeds to step S45 (T1>T2).

Then, in step S45, "△T = room temperature - measured value" is obtained for each block, and compared with the determination temperature set in steps S43, S44 (determination temperature ≦ ΔT?), To determine if there is any laundry in the object block.

In addition, the room temperature is the temperature of the indoor air measured by the temperature sensor 3. The measured value is the surface temperature of the block to be detected by the infrared sensor 6. ΔT is the difference obtained by subtracting the measured value from the room temperature.

Here, since the laundry is wet, its surface temperature is lower than room temperature. In particular, when drying starts with time and the moisture contained in the laundry starts to evaporate, the surface temperature of the laundry is lowered by the heat of evaporation.

That is, a difference ΔT is generated between the room temperature and the measured value of the infrared ray sensor 6 (the temperature of the target block), and when the difference ΔT is larger, it can be judged that There is likely to be laundry at the location of the object block.

Therefore, in step S45, it is judged whether or not there is laundry in the target block by comparing ΔT with the judgment temperature (established threshold value) (determination of temperature ≦ ΔT?).

Further, when a larger value is used as the judgment temperature (determination of the presence or absence of the threshold of the laundry), it is difficult to judge that the laundry exists. That is, if the difference ΔT is larger, it is judged to be larger than the judgment temperature.

On the other hand, when a small value is used as the judgment temperature, it is easy to judge that there is a laundry. That is, the difference ΔT is not too large and is judged to be larger than the judgment temperature.

Therefore, in the past operation, it is determined that the cumulative number of times of laundry is a predetermined number of times or more, and there is a high possibility that the laundry is likely to be washed during this operation. Therefore, the determination temperature is determined to be lower than the normal value of the determination temperature T1. The value is judged by the temperature T2 and compared with the above ΔT.

Therefore, in the past operation, it is determined that the number of accumulated laundry items is equal to or greater than the predetermined number of times, and even when the temperature difference ΔT between the room temperature and the target block is small, it is easy to determine that there is laundry, so that the initial sampling operation can be performed. In the early stages, it was judged that there was laundry.

In particular, in the initial stage of the start of drying, the moisture contained in the laundry starts to evaporate as time passes, and the surface temperature of the laundry gradually decreases due to the heat of evaporation.

Therefore, in the initial stage of the start of drying, the temperature difference ΔT between the room temperature and the block is small, but if the determination temperature as the threshold is made low, it is possible to determine that the laundry is present at an earlier stage.

As described above, in step S45, when it is detected that there is in the object block When the laundry is washed, the number of times of washing detection of the block is added and memorized, and then the process proceeds to step S46.

In step S46, it is judged whether or not the judgment of the presence or absence of washing of all the blocks has been completed. If the judgment of whether or not the laundry is completed is completed, the process proceeds to step S47, and if the determination has not been completed, the process proceeds to step S42 to judge the block which is not determined.

Although the initial sampling operation in steps S41 to S46 will be described above, the initial sampling motion can detect all the blocks in the target for a predetermined number of times, or can be repeatedly detected within a predetermined time.

Further, when the entire block is repeatedly subjected to the initial sampling operation for a predetermined number of times or for a predetermined period of time, the block determined to have the laundry can be skipped, and the presence or absence of the laundry can be judged. This can shorten the time of the action.

Steps S41 to S46 are control flow for detecting the position of the laundry from the difference between the room temperature and the detected temperature of each block, but the surface temperature is lower than the laundry at the position where the laundry is determined to be located. The portion of the room temperature may also include, for example, a window.

Therefore, by performing the control processing of steps S47 to S63, the block in which the window is located is detected, and a more efficient drying operation of the clothes is realized.

Steps S47 to S63 are various environmental modes (arrangement modes, for example, mode 1: toilet, mode 2: living room, mode 3: bathroom, etc.) stored in the clothes drying operation performed in the past, and the environment in which the clothes are dried this time. Compare the procedure to shorten the time for window judgment.

Each of the above-described environmental modes is memorized by the memory means in the past execution operation, and is determined to be the arrangement of the blocks having the windows, whereby the control means is detected.

In step S47, in order to record the drying operation of the clothes performed in the past Recalling the environmental mode 1, and the steps of comparing the environment of the drying operation of the clothes.

Here, it is determined whether or not there is a predetermined ratio (for example, 90%) or more of the entire window in the environmental mode 1 in the environment in which the clothes are dry.

When there is a predetermined ratio above the position where the laundry is located, the process proceeds to step S48, and it is assumed that the drying operation of the clothes is performed in the same environment as the environmental mode 1, and the process proceeds to step S54. When the ratio of the position where the laundry is located is less than the predetermined ratio, the process proceeds to step S49.

In step S49, it is a step of comparing the environmental mode 2 stored in the drying operation performed in the past with the environment of the clothes drying operation this time.

Here, it is determined whether or not there is a predetermined ratio (for example, 90%) or more of the entire laundry block in the environment mode 2 as the position where the laundry is located.

When there is a predetermined ratio above the position where the laundry is located, the process proceeds to step S50, and it is assumed that the drying operation of the clothes is performed in the same environment as the environmental mode 2, and the process proceeds to step S54. When the ratio of the position where the laundry is located is less than the predetermined ratio, the process proceeds to step S51.

In step S51, it is a step of comparing the environmental mode 3 memorized in the clothes drying operation performed in the past with the environment of the clothes drying operation this time.

Here, it is determined whether or not there is a predetermined ratio (for example, 90%) or more of the entire laundry block in the environment mode 3 as the position where the laundry is located.

If there is a predetermined ratio above the position where the laundry is located, the process proceeds to step S52, assuming that the drying operation of the clothes is the same as the environmental mode 3 Execute in the environment and move to step S54. When the ratio of the position where the laundry is located is less than the predetermined ratio, the process proceeds to step S53.

When the process proceeds to step S53, the environment mode executed and memorized in the past does not coincide with the environment of the clothes drying operation this time, and it is assumed that the clothes are dried in a new environment, and the process proceeds to step S54.

Next, referring to Fig. 15, in step S54, the control circuit 7 starts the clothes drying operation based on the detection results of steps S41 to S46, and proceeds to step S55.

Then, in step S55, the surface temperature of the portion located in the block to be blown is measured while the drying operation of the clothes is performed, and it is judged whether or not the temperature of the measured value is lower than the window determination temperature Tw (measured value <Tw? ).

First, when the measured value is lower than the window determination temperature Tw (window low temperature determination), the process proceeds to step S56. When it is determined for the first time that the measured value is lower than the window determination temperature Tw, the timer unit 7e starts the operation after the determination, and starts the calculation of the elapsed time Bx. In addition, when the above judgment is made for the second time, the calculation is continued and the elapsed time is accumulated.

In addition, when the measured value of the surface temperature of the portion of the block to be blown is higher than the window determination temperature Tw, the process proceeds to step S63, and it is determined whether or not the drying operation of the clothes is finished. If it is finished, the drying operation of the clothes is stopped, and if it is not finished, the movement is stopped. Go to step S54 to make a window determination for the block for the next air blowing object.

Further, in step S55, when the surface temperature of the block is higher than the window determination temperature Tw, the counting of the elapsed time Bx is stopped and the data of the elapsed time Bx is reset.

Then, in step S56, based on steps S47 to S53, it is determined whether or not the state of the drying operation of the clothes is executed this time, and whether it is the same as the past (previous time). surroundings.

When it is not the same environment as the past, the process proceeds to step S57, the window determination time is set to B1 of the normal value, and the process proceeds to step S61.

If it is the same environment as in the past, the process proceeds to step S58. In this step S58, if it is determined that the number of windows has not been completed a predetermined number of times in the past clothes drying operation in the target block, the process proceeds to step S59, the window determination time is set to the normal value B1, and the process proceeds to Step S61.

In addition, in step S58, if it is determined that the number of times of the window is greater than the predetermined number of times in the past drying operation of the clothes in the target block, the process proceeds to step S60, and the window determination time is set to be shorter than the normal value B1. The value B2 is special, and the process proceeds to step S61 (B1>B2).

Next, in step S61, the window determination times B1 and B2 set in steps S57, S59, and S60 are compared with the elapsed time Bx elapsed from the window low temperature determination. That is, it is judged whether or not the surface temperature of a portion in the target block is continuously lower than the window determination temperature for a predetermined time or longer.

Here, the surface temperature of the laundry rises as the drying progresses, but if it is a window, the surface temperature does not rise (no change) even if the drying operation of the clothes continues. Therefore, if the window determination time passes the window determination time B or more, or if the window judges the temperature (the state where the temperature is low), it is judged that the window is located in the block.

When the time (the elapsed time Bx) of the window determination temperature is less than the window determination time B (B1 or B2), the process proceeds to step S63, and it is judged whether or not the drying operation of the clothes is finished. If it is finished, the drying operation of the clothes is stopped. When it is finished, the process proceeds to step S54 to perform windows for the block of the next air supply object. Judge.

On the other hand, when the time (elapsed time Bx) lower than the window judgment temperature is above the window determination time B (B1 or B2), the process proceeds to step S62. Next, in step S62, it is determined that there is a window in the target block, the number of window detections of the block is added and stored, and the process proceeds to step S63.

In step S63, it is judged whether or not the clothes drying operation is completed. If it is finished, the clothes drying operation is stopped. If not, the process proceeds to step S54, and the window determination is performed for the block of the next air blowing target.

In addition, during the drying operation of the clothes being executed, it is controlled such that the dry air is not actively blown to the block determined as the position of the window as described above, and the dry air is blown to the position determined to be the laundry. Block.

As described above, in the present embodiment, in order to determine whether or not it is in the same environment as the already stored environment, it is confirmed whether or not 90% or more of the blocks regarded as the window position in the window determination performed during the previous operation is the laundry. Object block.

Further, when it is determined that 90% or more is the target block of the laundry, the possibility of being in the same environment as the already stored environment is high, and the special value is used to determine the window for the block which is determined to be the window in the past.

Thereby, the judgment time can be shortened, and the clothes drying operation can be performed efficiently.

In particular, it is possible to memorize a plurality of window position determinations performed during the dry operation of the past clothes, and to compare the environment of the clothes drying operation this time, and to further shorten the determination time by comparison.

S1~S6‧‧‧ is the step

Claims (14)

A dehumidifier comprising: a casing; a blowing means for drawing indoor air into the casing and blowing it to the outside; a dehumidifying means for removing moisture from indoor air sucked into the casing; and determining an air temperature of the indoor air temperature a detecting means; the wind direction variable means, when the dry air after removing the moisture by the dehumidifying means is blown out to the outside of the casing, the wind direction of the dry air can be changed; and the surface temperature detecting means is detected at the drying a surface temperature of a portion in the direction in which the air is blown; a control means for controlling the above means; and a memory means for memorizing the past operation history; wherein: the control means divides the range of the wind direction variable means by the wind to a plurality of blocks And detecting the surface temperature for each block by the surface temperature detecting means, and determining a temperature difference between the temperature of the indoor air and the surface temperature to compare the temperature difference with a predetermined first determination temperature, thereby judging Whether the object to be dried is located in the block; the operation history includes a judgment history of whether or not the object to be dried is present in each of the blocks; the control means Based on the determination history, the first determination temperature is changed. In the dehumidifier according to the first aspect of the invention, in the determination history, the number of times of drying objects in each of the blocks is determined in the past operation. When the number of times exceeds the predetermined number of times, the value of the first determination temperature is smaller than the case where the number of determinations is less than the predetermined number of times. The dehumidifier according to claim 1 or 2, wherein the control means controls the direction of the wind direction variable means so that the block which has been judged to be the position of the object to be dried is blown dry air as a wind blowing object. The dehumidifier according to claim 1, wherein the control means controls the dehumidifying means to perform a dehumidifying operation after the position determination of the object to be dried is completed, and the surface temperature detecting means is used in the dehumidifying operation The surface temperature of each of the blocks is detected, and the detected surface temperature is compared with a predetermined second determination temperature, thereby determining whether or not the non-dry object that is not the object to be dried is located in the block. In the dehumidifier according to the fourth aspect of the invention, when the surface temperature is lower than the second determination temperature, it is determined that the non-drying object that is not the object to be dried is located in the block. In the dehumidifier according to the fifth aspect of the invention, if the surface temperature is lower than the second determination temperature for a predetermined period of time or longer, it is determined that the non-dry object that is not the object to be dried is located in the area. In the block. A dehumidifier comprising: a casing; a blowing means for drawing indoor air into the casing and blowing it to the outside; a dehumidifying means for removing moisture from indoor air sucked into the casing; and determining an air temperature of the indoor air temperature a detecting means; the wind direction variable means, when the dry air after removing the moisture by the dehumidifying means is blown out to the outside of the casing, the wind direction of the dry air can be changed; a surface temperature detecting means for detecting a surface temperature of a portion located in a blowing direction of the dry air; and a controlling means for controlling the respective means; wherein: the controlling means separates a range in which the wind direction variable means can supply air into plural a block, wherein the surface temperature is detected for each block by the surface temperature detecting means, and a temperature difference between the temperature of the indoor air and the surface temperature is obtained, and the temperature difference is compared with a predetermined first judgment temperature. Determining whether the object to be dried is located in the block, the control means, after the position determination of the object to be dried is completed, controlling the dehumidification means to perform a dehumidification operation, and detecting the surface temperature detecting means in the dehumidifying operation When the surface temperature of each of the blocks is compared with a predetermined second determination temperature, and the state where the surface temperature is lower than the predetermined second determination temperature continues for a predetermined determination time or longer, The non-dried object that is determined not to be the object to be dried is located in the block, based on whether the non-dry object to be performed on each of the blocks is located therein Analyzing the history, to vary the length of time of the determination. In the dehumidifier according to the seventh aspect of the invention, in the determination history, when it is determined that the number of non-dry objects in each of the blocks exceeds a predetermined number of times in the past operation, the determination time is made. The value is lower than the number of times the number of judgments is less than the specified number of times. The dehumidifier according to any one of claims 6 to 8, wherein the control means is based on the block which is determined to be a dry object in the previous operation. In the middle, whether or not there is a determination that the block having a predetermined ratio or more has a dry object determines the judgment time. The dehumidifier according to any one of claims 6 to 8, wherein the control means compares an arrangement mode of the block determined to be the position of the non-dry object in the past operation, and is determined to be The arrangement pattern of the block at the position where the non-dried object is located is used to determine whether or not the operation is performed in the same environment as the past operation, and the determination time is determined based on the determination. The dehumidifier according to any one of claims 4 to 8, wherein the control means controls a direction of the variable direction means such that the block determined to be the position of the non-dry object is excluded. Outside the object that the dry air blows. The dehumidifier according to any one of claims 4 to 8, wherein the non-drying object is a window. A dehumidifier comprising: a casing; a blowing means for drawing indoor air into the casing and blowing it to the outside; a dehumidifying means for removing moisture from indoor air sucked into the casing; and determining an air temperature of the indoor air temperature a detecting means; the wind direction variable means, when the dry air after removing the moisture by the dehumidifying means is blown out to the outside of the casing, the wind direction of the dry air can be changed; and the surface temperature detecting means is detected at the drying a surface temperature of a portion of the air blowing direction; a control means for controlling the above means; wherein: The control means divides the range in which the wind direction variable means can be blown into a plurality of blocks, and detects the surface temperature for each block by the surface temperature detecting means, and obtains the temperature of the indoor air and the surface temperature. The temperature difference is compared with the predetermined first determination temperature to determine whether the object to be dried is located in the block, and the control means controls the dehumidification means after the position determination of the object to be dried is completed. In the dehumidifying operation, the surface temperature of each of the blocks is detected by the surface temperature detecting means in the dehumidifying operation, and the detected surface temperature is compared with a predetermined second determining temperature, and the surface temperature is lower than the predetermined temperature. When the state of the second determination temperature continues for a predetermined determination time or longer, it is determined that the non-dry object that is not the object to be dried is located in the block, and the control means determines that the object to be dried is based on the previous operation. In the block, whether or not a block having a predetermined ratio or more has a dry object is judged, and the judgment time is determined. A dehumidifier comprising: a casing; a blowing means for drawing indoor air into the casing and blowing it to the outside; a dehumidifying means for removing moisture from indoor air sucked into the casing; and determining an air temperature of the indoor air temperature a detecting means; the wind direction variable means, when the dry air after removing the moisture by the dehumidifying means is blown out to the outside of the casing, the wind direction of the dry air can be changed; and the surface temperature detecting means is detected at the drying a surface temperature of a portion of the air blowing direction; a control means for controlling the above means; Wherein: the control means divides the range in which the wind direction variable means can supply air into a plurality of blocks, and detects the surface temperature for each block by the surface temperature detecting means, and determines the temperature of the indoor air and the The temperature difference between the surface temperatures is compared with the predetermined first determination temperature, thereby determining whether the object to be dried is located in the block, and the control means controls the dehumidification means after the position determination of the object to be dried is completed. In the dehumidifying operation, the surface temperature of each of the blocks is detected by the surface temperature detecting means, and the detected surface temperature is compared with a predetermined second determining temperature, which is low. When the state of the predetermined second determination temperature continues for a predetermined determination time or longer, it is determined that the non-dry object that is not the object to be dried is located in the block, and the control means determines that the non-drying is performed in the past operation. The arrangement mode of the block at the position of the object and the configuration mode of the block determined to be the position of the non-dry object at the time of the operation, thereby determining Whether it is running in the same environment as the last operation, and based on the judgment of the judge to determine the time.