JP2021108916A - Dehumidifier with drying function - Google Patents

Abstract

To provide a dehumidifier with drying function capable of suppressing deterioration in drying efficiency in a drying operation of futon and the like when the room temperature is low.SOLUTION: During an operation in a drying mode in which a futon drying operation is selected, when a detection value by a room temperature sensor 42 is determined to be equal to or lower than 20°C, which is a predetermined value, a vertical louver 19 and a damper 44, which is switching means, are operated so that it becomes a hot air mode, and a low room temperature operation is executed in which a blower motor 9 is set at F5, which is predetermined first rotational frequency lower than the rotational frequency in a normal hot air mode. Thus, since cold air cooled in an evaporator 5 does not flow in a hot air path 38, the hot air temperature blown out from a hot air blowout port 26 does not drop. Also, by the air amount passing a condenser 6 and the evaporator 5 dropping lower than the normal hot air mode, and the temperature of a refrigerant flowing in a refrigeration cycle increasing, the temperature drop of the evaporator 5 is suppressed, and the execution of a defrosting operation can be avoided. Thus, an efficient futon drying operation can be executed.SELECTED DRAWING: Figure 7

Description

The present invention relates to a dehumidifier having a drying function such as a futon.

Conventionally, this type has a refrigeration cycle inside the main body case, and the air taken into the main body case is dehumidified by passing through the evaporator, and the heated warm air is blown by passing through the condenser. Some futons could be dried by implementing a drying mode that blows out from the outlet. (For example, Patent Document 1).

Special Publication No. 61-19889

However, in this conventional method, when the futon is dried in a place where the room temperature is low, the temperature of the hot air blown from the hot air outlet is lowered, so that the drying efficiency of the futon is lowered.
Further, if the drying operation of the futon is continued in a state where the room temperature is low, the temperature of the evaporator is lowered and the frost generated in the evaporator grows, so that the defrost operation for removing the frost is required. In the defrost operation, since the compressor is turned off to drive the blower motor, dry warm air cannot be sent into the futon during the defrost operation, and the drying efficiency of the futon is lowered, which is improved. There was room for.

Therefore, an object of the present invention is to provide a dehumidifier with a drying function capable of suppressing a decrease in drying efficiency in a drying operation of a futon or the like at a low room temperature.

In order to solve the above problems, claim 1 of the present invention includes a refrigeration cycle in which a compressor, a condenser, an expander, and an evaporator are sequentially connected by a refrigerant pipe to circulate the refrigerant in the main body case.
A hot air path that constitutes a path from a hot air suction port that sucks in air sent to the condenser to a hot air outlet that blows out warm air heated by the condenser.
A cold air path constituting a path from a cold air suction port for sucking air sent to the evaporator to a cold air outlet for blowing cold air cooled by the evaporator,
A louver that changes the opening and closing of the cold air outlet,
A blower motor that drives a fan that blows air in the hot air path and the cold air path, and
A bypass path that enables cold air in the cold air path to be supplied into the hot air path via the condenser, and a bypass path.
A switching means installed in the bypass path and capable of switching the opening and closing of the bypass path, and
At least a heat exchange temperature sensor that detects the temperature of the condenser,
A warm air mode in which the louver and the switching means are operated so as to open the cold air outlet and close the bypass path, and the louver and the bypass path so as to close the cold air outlet and open the bypass path. It is equipped with a control unit that switches between the drying mode that operates the switching means.
It has a room temperature sensor that detects the temperature in the room where the main body case is installed.
When the control unit determines that the value detected by the room temperature sensor is equal to or less than a predetermined value during the operation in the drying mode, the control unit operates the louver and the switching means so as to enter the warm air mode, and blows the air. It is characterized in that the motor is operated at a low room temperature to a predetermined first rotation speed lower than the rotation speed in the normal warm air mode.

Further, when the control unit determines that the value detected by the heat exchange temperature sensor exceeds the first predetermined value during the low room temperature operation, the louver and the switching means are set so as to enter the drying mode. Is operated to set the rotation speed of the blower motor to a predetermined second rotation speed higher than the predetermined first rotation speed.

Further, when the control unit determines that the value detected by the heat exchange temperature sensor is less than the second predetermined value lower than the first predetermined value during the low room temperature operation, the warm air mode The louver and the switching means are operated so as to be such that the rotation speed of the blower motor is set to the first rotation speed.

According to the present invention, if it is determined that the value detected by the room temperature sensor is equal to or less than a predetermined value during operation in the dry mode, the louver and the switching means are operated so as to enter the warm air mode, and the blower motor is heated to the normal temperature. Since the low room temperature operation is performed so that the predetermined first rotation speed is lower than the rotation speed in the wind mode, the cold air cooled by the evaporator does not flow into the warm air path, so that the temperature of the hot air blown from the hot air outlet is increased. It does not decrease, the amount of air passing through the condenser and the evaporator is lower than in the normal warm air mode, and the temperature of the refrigerant flowing in the refrigeration cycle rises, so that the temperature drop of the evaporator is suppressed. Since it is possible to avoid the frequent defrosting operation, it is possible to carry out an efficient drying operation of the futon or the like.

It is a perspective view of the dehumidifier according to the Example of this invention. It is a top view sectional view explaining the internal structure of the dehumidifier of this invention. It is a side view sectional view explaining the internal structure of the dehumidifier of this invention. It is a figure which shows the procedure of installing the duct at the hot air outlet of the dehumidifier of this invention. It is a control block diagram of the dehumidifier of this invention. It is a simple plan sectional view explaining the movement of the cold air and the hot air of the dehumidifier of this invention. It is a flowchart explaining the futon drying operation of this invention. It is a time chart explaining the low room temperature operation of this invention.

Embodiments of the present invention will be described below with reference to the drawings.
See FIGS. 1 and 2. Reference numeral 1 denotes a main body case constituting the main body of the dehumidifier, which is composed of a right frame 3 and a left frame 4 that engage with the bottom plate 2 at the center of the front surface, the upper surface, and the back surface. The main body case 1 includes an evaporator 5, a condenser 6, a compressor 39, and an expander 40 that form a refrigeration cycle, and a cold air fan 7 is provided downstream of the evaporator 5 and a fan 7 for cold air is provided downstream of the condenser 6. A hot air fan 8 is provided on the side, and a blower motor 9 that rotates the cold air fan 7 and the hot air fan 8 on the same axis is fixed to the cold air fan 7 side of the partition wall 10.

The blower motor 9 can change the air volume in 6 stages of F0, F1, F2, F3, F4, and F5, and F0 is driven at the maximum rotation speed to blow air at the maximum air volume. Since the rotation speed decreases each time, the air volume becomes smaller, and F5 is the minimum rotation speed.

The right frame 3 is provided with a cold air suction port 11 from the center to the upper part of the right side surface, and the cold air suction port 11 is covered with a filter 12 for removing dust in the suction air. A tank hole 14 for attaching / detaching the drain tank 13 is provided below the cold air suction port 11. When the drain tank 13 is attached, the outer surface of the drain tank 13 is formed on the same surface as the outer surface of the right frame 3. Above the cold air suction port 11, a recess 15 for a handle during transportation is integrally formed.

The left frame 4 is provided with a hot air suction port 16 from the center to the upper part of the left side surface, and the hot air suction port 16 is covered with a filter 12 like the cold air suction port 11. Further, a recess 15 having the same shape is integrally formed at a position facing the handle recess 15 of the right frame 3.

A front panel 17 is provided above the mating surface of the right frame 3 and the left frame 4 at the center of the lower part of the front surface, and a cold air outlet 18 is provided above the front panel 17. The cold air outlet 18 is provided with a pair of left and right vertical louvers 19 that adjust the wind direction of the cold air in the left-right direction and close the cold air outlet 18 when stopped or during dehumidifying operation. The vertical louvers 19 are provided with a pair of vertical louvers 19 in the vertical direction of the cold air. A large number of blades 20 for adjusting the above are provided.

Reference numeral 21 denotes an operation unit provided on the front side of the upper surface of the main body case 1. The operation unit 21 has an operation switch 22 for instructing operation start and stop, and a mode capable of switching between a drying mode and a warm air mode, which will be described later. It includes a changeover switch 23, a timer switch 24 for setting the time until the operation is stopped, and a large number of lamps 25 for displaying the operation state.

Reference numeral 26 denotes a warm air outlet, which is located from the rear side to the back surface of the upper surface of the main body case 1 and switches the blowing direction of the warm air between the upward direction and the rear direction by switching the exhaust louver 27. The exhaust louver 27 covers the warm air outlet 26 on the upper surface side on the same surface as the upper surface, and the rotating shafts provided on the left and right inside the warm air outlet 26 from the rear exhaust position where the warm air is exhausted rearward (not shown). ) Is used as a fulcrum to rotate about 90 degrees to exhaust warm air upward.

See FIGS. 2 and 4. Reference numeral 28 denotes an exhaust duct, which is composed of a duct main body 29 made of a flexible thin film material such as cloth or polyethylene, and a connector 30 attached to one end of the duct main body 29. Further, in order to prevent the thin film of the duct body 29 from being crushed and increasing the ventilation resistance, a reinforcing ring 31 made of plastic and having a diameter of about 15 cm is sewn into the plurality of thin films.

On the back side of the warm air outlet 26, a duct mounting portion 33 having a U-shaped groove 32 formed on the left, right, and lower sides of the outlet 26 is integrally formed with the right frame 3 and the left frame 4. There is.
In order to attach the exhaust duct 28 to the hot air outlet 26, it is confirmed that the exhaust louver 27 is on the upper surface side and the hot air blowing direction is set on the rear side, and the connector 30 is ducted. The setting of the exhaust duct 29 is completed by inserting it into the groove 32 of the mounting portion 33 from above, extending the duct main body 29, and exposing the other end to the outside of the room or the corridor through a window or the like.

See FIGS. 3 and 4. Reference numeral 34 denotes a storage unit lid located on the back surface of the main body case 1 below the hot air outlet 26, and exhausts air between the storage unit lid 34, the cold air fan 7, and the fan case 35 for storing the hot air fan 8. The storage portion 36 of the duct 28 is formed.

Explaining the method of attaching and detaching the exhaust duct 28 based on FIG. 4, the storage unit lid 34 is opened, the exhaust duct 28 is taken out from the storage unit 36, the exhaust louver 27 is on the upper surface side, and the hot air blowing direction is on the rear side. Insert the connector 30 into the groove 32 of the duct mounting portion 33 from above, extend the duct body 29, and extend the other end from a window or the like to the outside of a room such as an outdoor or corridor. If it is put out, the air passage is secured by the reinforcing ring 31, and the setting of the exhaust duct 29 is completed.

To remove the exhaust duct 28, the above mounting procedure may be reversed, and the duct body 29 may be folded into a small size and stored in the storage unit 36. As a result, the exhaust duct 28 can be easily attached to and detached from the main body case 1 whenever needed, and not only does it look good when stored, but the exhaust duct 28 is not lost or put away and forgotten. ..

See FIG. On the right side of the partition wall 10, a cold air passage 37 communicating with a cold air suction port 11, an evaporator 5, and a cold air outlet 18 is formed, and on the left side of the partition wall 10, a hot air suction port 16, a condenser 6, A warm air path 38 communicating with the warm air outlet 26 is formed.

See FIG. The fan case 35 is provided integrally with the partition wall 10 by resin molding, or is provided separately and assembled by engaging with a claw or the like.

See FIGS. 2 and 5. The evaporator 5 and the condenser 6 are fin tube type heat exchangers in which a copper tube penetrates a large number of aluminum fins having good thermal conductivity.
A compressor 39 that can only be switched ON / OFF is provided on the bottom plate 2, and the compressor 39, the condenser 6, the expander 40 such as a capillary tube, and the evaporator 5 are sequentially communicated with each other by a refrigerant pipe to freeze. Forming a cycle.

A drain pan (not shown) is provided below the evaporator 5, and the condensed water generated in the evaporator 5 is collected by the drain pan and stored in the drain tank 13.

Reference numeral 41 denotes a heat exchange temperature sensor installed in the condenser 6 for detecting the temperature of the condenser 6.

Reference numeral 42 denotes a room temperature sensor installed in the cold air suction port 11 and detecting the room temperature in the room where the main body case 1 is placed.

Reference numeral 43 denotes a humidity sensor installed in the cold air suction port 11 and detecting the relative humidity in the room where the main body case 1 is placed.

Reference numeral 44 denotes a damper as a switching means which is installed in the middle of the bypass path 45 in the main body case 1 near the cold air outlet 18 and whose opening degree can be changed.
By switching the damper 44 in the opening direction so that the bypass path 45 can pass through, the cold air that has passed through the cold air path 37 can be supplied to the warm air path 38 via the condenser 6, and the bypass path 45 passes through. By switching to the closing direction so as to be impossible, the cold air that has passed through the cold air path 37 is blown out from the cold air outlet 18 without being supplied to the hot air path 38.

Reference numeral 46 denotes a control unit composed of a microcomputer installed in the main body case 1 near the cold air outlet 18 and instructing the operation content of each drive member based on the operation content of the operation unit 21.

(Explanation of defrost operation)
Next, the defrost operation for removing the frost of the evaporator 5 will be described.
After the operation of the main body starts, the temperature in the room where the main body case 1 is installed drops, and the heat exchange temperature sensor (not shown) detects the temperature of the evaporator 5. For example, if it is determined that the temperature below −5 ° C.) is detected, the control unit 46 drives the blower motor 9 while keeping the damper 44 fully closed as shown in FIG. 6 (B), and turns the compressor 39 into the OFF state. Switch.

By carrying out the defrost operation in this way, the frost generated on the surface of the evaporator 5 can be melted, and the moist air that has passed through the evaporator 5 and contains a large amount of water flows to the warm air path 38 via the bypass path 45. Since it is possible to prevent the air from being guided to the futon from the warm air outlet 26, it is possible to prevent the drying efficiency from being lowered due to the moist air being blown to the futon.

(Explanation of drying mode and warm air mode)
Next, the operation of each drive member when the drying mode and the warm air mode are set by the changeover switch 23 of the operation unit 21 will be described.
See FIG. When the drying mode is set, each part operates so as to open the damper 44 and close the vertical louver 19 as shown in (A), and the indoor air sucked from the cold air suction port 11 passes through the cold air path 37. Passes through the bypass path 45, mixes with the indoor air sucked from the warm air suction port 16, passes through the warm air path 38, and is blown out from the warm air outlet 26.

As a result, dehumidification is performed by passing through the low-temperature evaporator 5, and dry warm air heated by passing through the high-temperature condenser 6 is blown from the warm air outlet 26. The futon can be dried efficiently.

When the warm air mode is set, the damper 44 is closed and the vertical louver 19 is opened as shown in (B), so that the indoor air sucked from the cold air suction port 11 passes through the cold air path 37. The indoor air blown from the cold air outlet 18 and sucked from the hot air suction port 16 passes through the warm air path 38 and is blown out from the hot air outlet 26.

As a result, the cold air dehumidified by passing through the low-temperature evaporator 5 is blown out from the cold air outlet 18, and the high-temperature hot air heated by the condenser 6 is blown from the hot air outlet 26. By blowing warm air to the object to be dried while dehumidifying, it is possible to efficiently dehumidify the room and dry clothes and futons.

In any mode, the compressor 39 is always ON, and the blower motor 9 is fixed by the air volume of F2.

(Explanation of futon drying operation)
Next, the futon drying operation in the present invention will be described.
See FIG. 7. First, when the operation switch 22 of the operation unit 21 is turned on and the futon drying operation is selected by the operation changeover switch (not shown) on the operation unit 21, the control unit 46 is set to the above-mentioned drying mode. And the damper 44 is operated to drive the blower motor 9 to F2 (step S101).

When the process of step S101 is completed, the control unit 46 determines whether the value detected by the room temperature sensor 42 exceeds 20 ° C. (step S102), and if it determines that the room temperature exceeds 20 ° C., the futon drying operation. It is determined whether or not one hour, which is the predetermined time of the above, has passed (step S103), and if one hour has passed, the futon drying operation is considered to be completed and the operation is terminated. Repeat the judgment.

If it is determined in step S102 that the value detected by the room temperature sensor 42 is 20 ° C. or lower, it is assumed that the start condition of the low room temperature operation for efficiently drying the futon in a room where the room temperature is low is satisfied, and the low room temperature operation is started. ..
Hereinafter, steps S104 to S109 will be described with reference to FIG. 8 which is a time chart of low room temperature operation together with the flowchart of FIG.

See FIGS. 7 and 8. When it is determined in step S102 that the value detected by the room temperature sensor 42 is 20 ° C. or lower, the control unit 46 operates the vertical louver 19 and the damper 44 so as to be in the warm air mode described above, and causes the blower motor 9 to operate. The rotation speed is set to F5, which is a predetermined first rotation speed lower than that of the normal warm air mode (step S104).

When the process of step S104 is completed, the control unit 46 determines whether the operation time of the futon drying operation is less than one hour, which is a predetermined time (step S105), and if the operation time is less than one hour, the heat exchange temperature sensor. It is determined whether the detected value at 41 exceeds the first predetermined value of 50 ° C. (step S106), and if the detected value at the heat exchange temperature sensor 41 exceeds 50 ° C., the above-mentioned drying mode state The vertical louver 19 and the damper 44 are operated so as to be the same, and 30 seconds after the instruction to switch to the drying mode elapses, the blower motor 9 is set to F0, which is a predetermined second rotation speed (step S107).

If the control unit 46 determines in step S105 that the operation time of the futon drying operation is one hour or more, which is a predetermined time, the control unit 46 terminates the operation assuming that the futon drying operation is completed.
If the control unit 46 determines in step S106 that the value detected by the heat exchange temperature sensor 41 is 50 ° C. or lower, the control unit 46 repeats the determination in step S105.

When the process of step S107 is completed, the control unit 46 determines whether the operation time of the futon drying operation is less than 1 hour, which is a predetermined time (step S108), and if the operation time is less than 1 hour, the heat exchange temperature sensor. If it is determined whether the detected value at 41 is less than 35 ° C., which is the second predetermined value (step S109), and if it is determined that the detected value at the heat exchange temperature sensor 41 is less than 35 ° C., the process of step S104 is repeated. , The vertical louver 19 and the damper 44 are operated so as to be in the warm air mode, and the rotation speed of the blower motor 9 is set to F5.

When the control unit 46 determines in step S108 that the operation time of the futon drying operation is one hour or more, which is a predetermined time, the control unit 46 terminates the operation assuming that the futon drying operation is completed.
If the control unit 46 determines in step S109 that the value detected by the heat exchange temperature sensor 41 exceeds 35 ° C., the control unit 46 repeats the determination in step S108.

As described above, when the futon drying operation is performed in a low room temperature state where the temperature of the room where the main body case 1 is installed is 20 ° C. or less, the low room temperature operation is started and the condenser 6 detected by the heat exchange temperature sensor 41. When the temperature is 50 ° C. or lower, the vertical louver 19 and the damper 44 are switched so as to be in the warm air mode, so that the cold air in the cold air path 37 is not supplied into the warm air path 38, so that the temperature is high. The warm air can be continuously blown from the hot air outlet 26, and the futon can be dried efficiently.

Further, since the rotation speed of the blower motor 9 is switched to the minimum rotation speed F5, the amount of air passing through the condenser 6 and the evaporator 5 is reduced as compared with the normal warm air mode, and the refrigerant flowing in the refrigeration cycle. Since the temperature rise is suppressed, the temperature drop of the evaporator 5 is suppressed, so that it is possible to suppress the execution of the defrost operation and prevent the drying efficiency of the futon from being reduced.

Further, since the rotation speed of the blower motor 9 is switched to F5, which is the minimum rotation speed, the temperature of the condenser 6 rises in a short time, so that high-temperature air can be continuously blown from the hot air outlet 26, and further, it is cooled. Since the amount of cold air blown into the room from the wind outlet 18 can be minimized, it is possible to suppress a decrease in drying efficiency due to a decrease in room temperature.

Further, when the temperature of the condenser 6 rises due to the continuation of the operation in the warm air mode and the value detected by the heat exchange temperature sensor 41 exceeds 50 ° C., the vertical louver 19 and the damper 44 are set so as to enter the drying mode. By switching and switching the rotation speed of the blower motor 9 to F0, which is the maximum rotation speed, the dry warm air dehumidified by the evaporator 5 and heated by the condenser 6 can be blown into the futon with a large air volume. The futon can be dried efficiently.

Further, since the rotation speed of the blower motor 9 is switched to F0 30 seconds after the instruction to switch the vertical louver 19 and the damper 44 is given, the cold air in the cold air path 37 is sent to the warm air path 38 to warm the air. It is possible to prevent the temperature of the warm air blown from the wind outlet 26 from dropping sharply and the drying efficiency of the futon from dropping.

Further, when the temperature of the condenser 6 drops due to the continuation of the operation in the drying mode and the value detected by the heat exchange temperature sensor 41 becomes less than 35 ° C., the vertical louver 19 and the damper are set so that the hot air mode is set again. By switching 44 and switching the rotation speed of the blower motor 9 to F5, which is the minimum rotation speed, it is possible to suppress a decrease in the temperature of the warm air blown from the hot air outlet 26 and continuously dry the futon efficiently. can.

The effects of the present invention will be described below.

When the futon drying operation is selected and the room temperature sensor 42 determines that the temperature detected by the room temperature sensor 42 is 20 ° C. or lower, the vertical louver 19 and the damper as a switching means are set to the warm air mode. Since the low room temperature operation is performed by operating 44 and setting the blower motor 9 to F5, which is a predetermined first rotation speed lower than the rotation speed in the normal warm air mode, the cold air cooled by the evaporator 5 is warm. Since it does not flow into the air passage 38, the temperature of the hot air blown from the hot air outlet 26 does not decrease, and the amount of air passing through the condenser 6 and the evaporator 5 decreases as compared with the normal warm air mode, and the air is frozen. Since the temperature of the refrigerant flowing in the cycle rises, the temperature drop of the evaporator 5 is suppressed and the defrosting operation can be avoided, so that the futon drying operation can be carried out efficiently.

Further, during the low room temperature operation, if it is determined that the value detected by the heat exchange temperature sensor 41 exceeds the first predetermined value of 50 ° C., the vertical louver 19 and the damper 44 are operated so as to enter the drying mode. Since the rotation speed of the blower motor 9 is set to F0, which is a predetermined second rotation speed higher than the predetermined first rotation speed, the dehumidified air that has passed through the evaporator 5 passes through the condenser 6. Since the heated and hot dry air can be sent into the futon from the warm air outlet 26, an efficient futon drying operation can be performed.

Further, during the low room temperature operation, if it is determined that the value detected by the heat exchange temperature sensor 41 is less than 35 ° C., which is the second predetermined value lower than the first predetermined value, the hot air mode is set vertically. Since the louver 19 and the damper 44 are operated and the rotation speed of the blower motor 9 is set to F5, which is the first rotation speed, the temperature of the condenser 6 is lowered, so that the warm air blown from the hot air outlet 26 is blown. It is possible to prevent the temperature from decreasing and the efficiency of drying the duvet from decreasing.

In the present embodiment, the low room temperature operation in the case where the futon drying operation is set has been described, but the present invention is not limited to this, and the low room temperature operation may be performed in the clothes drying operation, and the main body case 1 is installed. By performing the low room temperature operation in a state where the place is at a low room temperature and the clothes are difficult to dry, the dry high temperature air can be continuously blown, so that the drying efficiency is improved.

Further, in the present embodiment, the damper 44 and the bypass path 45 are arranged in the vicinity of the cold air outlet 18, but the present invention is not limited to this, and the cold air path 37 and the hot air path 38 can communicate with each other in the partition wall 10. A hole may be formed to form a bypass path, and a movable plate installed in the hole may function as a cold air adjusting means. The positions and configurations of the bypass path 45 and the damper 44 are not particularly limited as long as the amount of cold air flowing into the path 38 can be adjusted and the temperature of the hot air mixed with the cold air can be detected.

1 Main body case 5 Evaporator 6 Condenser 9 Blower motor 11 Cold air suction port 16 Hot air suction port 18 Cold air outlet 19 Vertical louver 26 Warm air outlet 37 Cold air path 38 Hot air path 39 Compressor 40 Expander 41 Heat exchange temperature sensor 42 Room temperature sensor 44 Damper (cold air adjusting means)
45 Bypass path 46 Control unit

Claims (3)

A refrigeration cycle that circulates the refrigerant by communicating the compressor, condenser, expander, and evaporator in the main body case with a refrigerant pipe in sequence.
A hot air path that constitutes a path from a hot air suction port that sucks in air sent to the condenser to a hot air outlet that blows out warm air heated by the condenser.
A cold air path constituting a path from a cold air suction port for sucking air sent to the evaporator to a cold air outlet for blowing cold air cooled by the evaporator,
A louver that changes the opening and closing of the cold air outlet,
A blower motor that drives a fan that blows air in the hot air path and the cold air path, and
A bypass path that enables cold air in the cold air path to be supplied into the hot air path via the condenser, and a bypass path.
A switching means installed in the bypass path and capable of switching the opening and closing of the bypass path, and
At least a heat exchange temperature sensor that detects the temperature of the condenser,
A warm air mode in which the louver and the switching means are operated so as to open the cold air outlet and close the bypass path, and the louver and the bypass path so as to close the cold air outlet and open the bypass path. It is equipped with a control unit that switches between the drying mode that operates the switching means.
It has a room temperature sensor that detects the temperature in the room where the main body case is installed.
When the control unit determines that the value detected by the room temperature sensor is equal to or less than a predetermined value during the operation in the drying mode, the control unit operates the louver and the switching means so as to enter the warm air mode, and blows the air. A dehumidifier with a drying function, characterized in that the motor is operated at a low room temperature to a predetermined first rotation speed lower than the rotation speed in the normal warm air mode. When the control unit determines that the value detected by the heat exchange temperature sensor exceeds the first predetermined value during the low room temperature operation, the control unit operates the louver and the switching means so as to enter the drying mode. The dehumidifier with a drying function according to claim 1, wherein the rotation speed of the blower motor is set to a predetermined second rotation speed higher than the predetermined first rotation speed. If the control unit determines that the value detected by the heat exchange temperature sensor is less than the second predetermined value, which is lower than the first predetermined value, during the low room temperature operation, the hot air mode is set. The dehumidifier with a drying function according to claim 2, wherein the louver and the switching means are operated to set the rotation speed of the blower motor to the first rotation speed.

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