JP7429842B2 - dehumidifier - Google Patents

Description

The present invention relates to a dehumidifying device used for drying clothes, for example.

Conventionally, this type of dehumidification device has a refrigeration cycle in which a compressor, a condenser, an expander, and an evaporator are sequentially connected in an annular manner within a main body case that has an inlet and an outlet, and a moisture absorbing section that adsorbs moisture. It is equipped with a dehumidifying rotor that releases moisture in a moisture releasing section, a heating means that heats the air supplied to the humidity releasing section, and a blowing means that blows the air. At this time, a configuration in which a condenser, an evaporator, a dehumidifying rotor, and an air blower are arranged in parallel is known (for example, a related prior document is Patent Document 1 listed below).

Patent No. 4696482

When the air flowing into the evaporator from the dehumidification part of the dehumidifying rotor is folded back, it is folded back 180 degrees from top to bottom, so a vertical height is required, which increases the height of the main body and increases the air volume to the bottom of the evaporator. This has caused a problem in that the lower part is more likely to become frosty as the temperature tends to drop.

In order to achieve this object, the present invention includes a main body case having an inlet and an outlet, and a heat pump provided in the main body case, and the heat pump includes a compressor and a compressor. It is formed by a heat radiator, an expander, and a heat absorber that are sequentially provided downstream, and the air sucked into the main body case from the suction port is passed through the heat radiator and the heat absorber sequentially into the main body case. an air blowing section that blows air to the air outlet; an air path of the air blowing section that is a moisture releasing section of a dehumidifying rotor provided between the heat radiator and the heat absorber; and a moisture releasing section between the heat absorber and the air outlet. and a moisture absorbing section of the dehumidifying rotor provided therein, and the air sucked from the suction port by the blowing section passes through the radiator, the moisture radiating section of the dehumidifying rotor, and the horizontal direction of the heat absorber. a first air passage through which air is blown to the outlet through one side, the other side in the horizontal direction of the heat absorber, the moisture absorbing section of the dehumidifying rotor, and the air blowing section; , the air sucked in from the suction port passes through the heat radiator, the moisture release section of the dehumidification rotor, the other side of the heat absorber, the moisture absorption section of the dehumidification rotor, and the air blowing section in sequence. and a second air passage for blowing air to the air outlet, thereby achieving the intended purpose.

According to the present invention, the wind speed distribution in the lateral and vertical directions of the heat absorber can be balanced, and frost formation at the lower part of the heat absorber can be improved.

External perspective view of a dehumidifier according to Embodiment 1 of the present invention Exploded perspective view of the dehumidifier Schematic sectional view of the dehumidifier Schematic sectional view of the dehumidifier External perspective view of the radiator of the dehumidifier External perspective view of the heat absorber of the dehumidifier Schematic sectional view of the dehumidifier

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1)
FIG. 1 is an external perspective view of a dehumidifier according to Embodiment 1 of the present invention. FIG. 2 is an exploded perspective view of the dehumidifier according to Embodiment 1 of the present invention. Note that FIGS. 1 and 2 are views of the dehumidifier as viewed from the rear side. 3 and 4 are schematic cross-sectional views of a dehumidifying device according to Embodiment 1 of the present invention. Note that FIG. 3 is a cross-sectional view taken along the line AA in FIG. FIG. 4 is a sectional view taken along line BB in FIG.

As shown in FIGS. 1, 2, 3, and 4, the main case 1 has a shape in which the size in the horizontal direction W is larger than the size in the depth direction D and the vertical direction H. A suction port 2 is arranged on the rear surface (one side surface in the depth direction of the main body case 1). At the upper part of the main body case 1, an air outlet 3 is arranged. The air outlet 3 has a horizontally long rectangular shape and is open to the upper and rear surfaces of the main body case 1. A louver 4 that changes the direction of air from the air outlet 3 is provided on the rear side of the top surface of the main body case 1 (one side surface side in the depth direction of the main body case 1). An operating section 5 is provided on the other side in the depth direction of the main body case. The operation unit 5 has a plurality of switches for turning the power on and off, changing the operation mode, etc.

The main body case 1 includes a heat pump 6, a blower section 7, a dehumidifying rotor section 8, a mounting base 9, a water storage tank section 10, and a control section 11.

The heat pump 6 has a configuration in which a compressor 12, a radiator 13, an expander 14, and a heat absorber 15 are sequentially connected in an annular manner to circulate a refrigerant.

The compressor 12 is arranged on the left side of the main case 1 (one side surface in the lateral direction of the main case 1) when viewed from the front side of the main case 1. The compressor 12 is fixed on the bottom surface of the main body case 1.

The heat radiator 13 is arranged on the rear surface side of the main body case 1 (one side surface side in the depth direction of the main body case). The heat radiator 13 is arranged on the bottom surface of the main body case 1 so that a gap between adjacent heat radiating fins in the radiator 13 (described later) faces the suction port 2 of the main body case 1.

FIG. 5 is an external perspective view of the radiator of the dehumidifier according to Embodiment 1 of the present invention. Note that FIG. 5 is a diagram of the radiator of the dehumidifying device viewed from the rear side.

As shown in FIG. 5, the radiator 13 includes a large number of radiating fins 13a and a connecting pipe 13b connecting the radiating fins 13a.

The radiation fin 13a has a vertically long rectangular plate shape and is made of aluminum. The large number of radiation fins 13a are arranged such that the surfaces of adjacent radiation fins 13a face each other. A gap between adjacent radiation fins 13a becomes an air path.

The connecting pipe 13b has a cylindrical shape and is made of copper. The cylindrical connecting pipe 13b is provided in multiple stages in the longitudinal direction of the radiation fin 13a, and is bent multiple times in a meandering manner. A large number of radiation fins 13a are fixed to the straight pipe portion of the connecting pipe 13b. A large number of radiation fins 13a are stacked at predetermined intervals in the direction of the central axis of the straight pipe portion of the connecting pipe 13b.

As shown in FIGS. 2, 3, and 4, the heat absorber 15 is arranged on the right side of the main case 1 (on the other side in the lateral direction of the main case 1) when viewed from the front of the main case 1, and is described later. The heat absorber 15 is fixed to the mounting base 9 so that the central axis of the air passage, which is the gap between the adjacent heat absorbing fins 15a, extends in the left-right direction of the main body case 1.

FIG. 6 is an external perspective view of the heat absorber of the dehumidifier according to Embodiment 1 of the present invention. Note that FIG. 6 is a view of the radiator of the dehumidifier as viewed from the left side of the main body case.

As shown in FIG. 6, the heat absorber 15 includes a large number of heat absorbing fins 15a and a connecting pipe 15b that connects the large number of heat absorbing fins 15a.

The heat absorbing fin 15a has a vertically long rectangular plate shape and is made of aluminum. The large number of heat-absorbing fins 15a are arranged such that the surfaces of adjacent heat-absorbing fins 15a face each other. A gap between adjacent heat absorbing fins 15a becomes an air path.

The connecting pipe 15b has a cylindrical shape and is made of copper. The cylindrical connecting pipe 15b is provided in multiple stages in the longitudinal direction of the heat-absorbing fin 15a, and is bent multiple times in a meandering manner. A large number of heat-absorbing fins 15a are fixed to the straight pipe portion of the connecting pipe 15b. A large number of heat-absorbing fins 15a are stacked at predetermined intervals in the direction of the central axis of the straight pipe portion of the connecting pipe 15b.

As shown in FIGS. 2, 3, and 4, the blower section 7 is arranged to face the radiator 13 and is fixed to the mounting base 9. The air blower 7, the radiator 13, and the suction port 2 of the main case 1 are arranged in a straight line in the depth direction of the main case 1. The blower section 7 includes a motor 16, a fan 17 rotated by the motor 16, and a casing 18 surrounding the fan 17.

The fan 17 is a turbo fan and includes a main plate 17a, a large number of blades 17b, and a suction ring 17c.

The main plate 17a has a substantially disk shape with a downwardly convex central portion, and a cylindrical rotating shaft fixing portion 17d is provided in the central portion. The rotating shaft fixing part 17d has a structure in which the rotating shaft of the motor 16 can be inserted and this rotating shaft can be fixed. The peripheral edge of the main plate 17a has a plurality of blades 17b extending downward from the main plate 17a, and the blades 17b have a wing-shaped horizontal cross section. The end portion of the blade 17b on the peripheral edge side of the main plate 17a has a shape facing in a direction opposite to the rotation direction of the fan 17. A circular suction ring 17c is provided at the lower end of the plurality of blades 17b.

The casing 18 has an intake port 18a on the bottom surface and a discharge port 18b on the top surface. When the fan 17 is rotated by the motor 16, air sucked in from the intake port 18a of the casing 18 flows into the fan 17 through the suction ring 17c of the fan 17. The air that has flowed in is blown out in the radial direction of the fan 17 along the blades 17b, and is blown to the air outlet 3 of the main body case 1 via the outlet 18b of the casing 18.

The dehumidifying rotor section 8 is arranged between the blower section 7 and the heat absorber 15. The heat absorber 15, the dehumidifying rotor section 8, and the air blower section 7 are arranged in a straight line in the lateral direction of the main body case 1. The dehumidifying rotor section 8 includes a dehumidifying rotor 19, a rotor frame 20, a driving section 21, and a heating section 22.

The dehumidifying rotor 19 has a disk-like overall shape. This disc body is a circular ring in which a ventilation body is provided. The ventilation body has a second band (not shown) provided in a zigzag pattern between two first bands (not shown), and is arranged in a spiral shape from the inner circumference to the outer circumference within the circular ring. It has a ventilation structure by winding it around the body. These first and second strips are made of heat-resistant fibers, and a moisture-absorbing substance such as zeolite is adhered to the surface of the fibers using, for example, a silica-based adhesive.

The dehumidifying rotor 19 is formed into a disk shape, is rotatably erected on the rotor frame 20 so that its central axis extends in the left-right direction of the main body case 1, and is rotated by a driving portion 21. The rotor frame 20 is fixed to the mounting base 9. The dehumidifying rotor 19 has a moisture absorption section 19a that adsorbs moisture from the air, and a moisture release section 19b that releases moisture into the air.

The heating portion 22 is installed to face the moisture releasing portion 19b of the dehumidifying rotor 19. The heating portion 22 is arranged on the upstream side of the moisture releasing portion 19b of the dehumidifying rotor 19 in the air path described later.

The mounting base 9 has a box shape with open bottom and front surfaces of the main body case 1, and includes a mounting plate 9a and support legs 9b.

The mounting plate 9a has a substantially rectangular plate shape, and the air blowing section 7, the dehumidifying rotor section 8, and the heat absorber 15 are fixed to the upper surface.

The support legs 9b are three rectangular plates that extend downward from the periphery of the mounting plate 9a. The plate is integrally formed. The support leg 9b has a substantially rectangular parallelepiped-shaped space 9c between the mounting plate 9a and the bottom surface of the main body case 1. The height of the space 9c is approximately the same as the height of the support leg 9b, and the water storage tank 10 is installed in the space 9c.

The water tank section 10 is disposed in the lower space 9c of the main body case 1, and is configured to be detachable from the front surface of the main body case 1 (one side surface in the depth direction of the main body case). The attachment/detachment direction of the water storage tank portion 10 is the front-rear direction of the main body case 1 (the depth direction of the main body case). A ventilation section 7, a dehumidifying rotor section 8, and a heat absorber 15 are arranged above the water storage tank section 10. The water storage tank section 10 includes a flat box-shaped tank 10a with an open top and a funnel-shaped water collecting cover 10b. The water collecting cover 10b is removably provided on the upper part of the tank 10a. That is, the structure is such that dew condensation is caused by the heat absorber 15, and the condensed water is collected by the funnel-shaped water collecting cover 10b and flows into the tank 10a.

The control unit 11 is arranged on the left side of the main body case 1 (one side surface side in the lateral direction of the main body case 1) when viewed from the front side of the main body case 1. The control unit 11 is fixed on the bottom surface of the main body case 1. The control section 11 controls the motor 16 of the blower section 7, the compressor 12, and the drive section 21 and heating section 22 of the dehumidifying rotor section 8 based on a switch on the operation section 5 pressed by the user.

As shown in FIG. 3, the feature of this embodiment is that the main body case 1 includes a first air passage 23 and a second air passage 24.

In the first air passage 23, the air sucked from the suction port 2 by the air blower 7 is sent to the radiator 13, the heating portion 22, the moisture releasing portion 19b of the dehumidifying rotor 19, the heat absorber 15, and the dehumidifying rotor 19. This is an air path through which air is blown to the outlet 3 via the moisture absorption section 19a and the air blowing section 7 in this order. In the second air passage 24, the air sucked from the suction port 2 is blown to the air outlet 3 by the air blower 7 through the heat absorber 15, the moisture absorbing portion 19a of the dehumidifying rotor 19, and the air blower 7 in this order. It is a wind route.

Specifically, the moisture releasing part 19b and the moisture absorbing part 19a of the dehumidifying rotor 19 are arranged so as to be lined up in the horizontal direction (the front-rear direction in the main body case 1). The downstream side of the heat absorber 15 in the first air passage 23 and the second air passage 24 is arranged so that the upstream side of the moisture absorption part 19a of the dehumidification rotor 19 in the first air passage 23 and the second air passage 24 are opposite to each other. ing. A folded duct 25 is provided so as to cover the upstream side of the heat absorber 15 in the first air passage 23 and the second air passage 24, and the downstream side of the moisture release part 19b of the dehumidification rotor 19 in the first air passage 23. . The folded duct 25 is disposed between the right side surface of the main body case 1 (the other side surface in the lateral direction of the main body case 1) and the dehumidifying rotor 19, and is arranged between the moisture releasing part 19b of the dehumidifying rotor 19 and the moisture absorbing part 19a. It is part of the air passage that communicates with Note that the folded duct 25 has a communication hole 26 that communicates the suction port 2 and the heat absorber 15.

In the first air passage 23, air sucked in from the suction port is warmed by the radiator 13, further warmed by the heating portion 22, and supplied to the moisture release portion 19b of the dehumidification rotor 19. In the moisture release section 19b, the moisture adsorbed by the moisture absorption section 19a is moved to the moisture release section 19b by rotation of the dehumidification rotor 19, and is released into the supplied air by heating of the heating section 22. This high-humidity air is blown into the folded duct 25, hits the inner surface of the folded duct 25, changes direction, is supplied to the heat absorber 15, and is cooled to form dew condensation, and moisture is extracted as water droplets. Thereafter, the cooled air is supplied to the moisture absorption section 19a of the dehumidification rotor 19, and the moisture in the air is further adsorbed by the moisture absorption section 19a, resulting in dry air. Furthermore, since heat of adsorption is generated when moisture is adsorbed, indoor air is sucked into the air blowing section 7 with reduced humidity and increased temperature, and is blown into the room from the air outlet 3. Note that the moisture condensed in the heat absorber 15 drips downward as water droplets and flows into the tank 10a of the water storage tank section 10.

In the second air passage 24, the air sucked in from the suction port enters the folded duct 25 through a communication hole 26 arranged near the upstream side of the dehumidification part 19b of the dehumidifying rotor 19 in the first air passage 23 of the folded duct 25. Air is blown to The air blown into the folded duct 25 hits the inner surface of the folded duct 25, changes its direction, is supplied to the heat absorber 15, and is cooled to form dew condensation, and moisture is extracted as water droplets. Thereafter, the cooled air is supplied to the moisture absorption section 19a of the dehumidification rotor 19, and the moisture in the air is further adsorbed by the moisture absorption section 19a, resulting in dry air. Furthermore, the dry air is sucked into the blower section 7 and blown into the room from the blower outlet 3.

Here, the first air passage 23 passes through the heat radiator 13, the moisture releasing part 19b of the dehumidifying rotor 19, the heat absorber 15, the moisture absorbing part 19a of the dehumidifying rotor 19, and the air blowing part 7 in this order, so the ventilation resistance increases. . When the temperature of the heat absorber becomes low and frost forms, the ventilation resistance of the first air passage 23 increases, the air volume decreases, and the amount of dehumidification decreases. , and the air blowing section 7 in sequence, by providing the second air blowing path 24, there is little ventilation resistance to the heat absorber 15, and a stable air volume can be supplied to the heat absorber 15. Thereby, frost formation on the heat absorber 15 can be reduced, and the dehumidification ability can be improved.

In the second air passage 24, the air sucked from the suction port 2 by the air blower 7 is passed through a communication hole 24 disposed near the upstream side of the moisture release part 19b of the dehumidifying rotor 19 in the first air passage 23 of the folded duct 25. The air flows into the folded duct 25, mixes with the first air blowing path 23, and is supplied to the heat absorber 15 and the moisture absorption section 19a of the dehumidification rotor 19. Here, since the mixed air of the two air passages of the first air passage 23 and the second air passage 24 is supplied, the amount of air passing through the moisture absorption part 19a of the dehumidification rotor 19 increases, and the amount of moisture adsorption can be increased. , the dehumidification efficiency of the dehumidification rotor 19 is improved.

Furthermore, since the air on the upstream side of the moisture release section 19b of the dehumidifying rotor 19 in the first air passage 23 is air with low relative humidity that has been heated in the heating section 22, it is better to By mixing the indoor air through the two air blowing paths 24, the air becomes more saturated (air with high relative humidity), and the air can easily form dew condensation in the heat absorber 15.
Thereby, the dehumidification ability can be improved.

Further, the main body case 1 includes a third air passage 27 . In the third air passage 27, the air sucked from the suction port 2 by the air blower 7 is sent to the heat radiator 13, the moisture release part 19b of the dehumidifying rotor 19, one side of the heat absorber 15, and the inside of the folding duct 25. This is an air path through which air is blown to the outlet 3 through the other side of the heat absorber 15, the moisture absorbing section 19a of the dehumidifying rotor 19, and the air blowing section 7 in this order. Note that one side of the heat absorber 15 is the rear side of the heat absorber 15 in the main body case 1, and the other side of the heat absorber 15 is the front side of the heat absorber 15 in the main body case 1.

In the third air passage 27, air sucked in from the suction port 2 is warmed by the radiator 13, further warmed by the heating portion 22, and supplied to the moisture release portion 19b of the dehumidification rotor 19. In the moisture release section 19b, the moisture adsorbed by the moisture absorption section 19a is moved to the moisture release section 19b by rotation of the dehumidification rotor 19, and is released into the supplied air by heating of the heating section 22. This highly humid air is blown to one side of the heat absorber 15 and is cooled to form dew condensation, and moisture is extracted as water droplets. This cooled and dehumidified air is blown into the folded duct 25, changes direction within the folded duct 25, is supplied to the other side of the heat absorber 15, and is cooled to condense and further dehumidified. Thereafter, the cooled air is supplied to the moisture absorption section 19a of the dehumidification rotor 19, and the moisture in the air is further adsorbed by the moisture absorption section 19a, resulting in dry air. Furthermore, since heat of adsorption is generated when moisture is adsorbed, indoor air is sucked into the air blowing section 7 with reduced humidity and increased temperature, and is blown into the room from the air outlet 3.

In this way, by passing through the heat absorber 15 twice, the third air passage 27 can improve the heat exchange efficiency by reducing the number of passages through the heat absorber 15 without sufficient heat exchange. Dehumidification ability can be improved. On the other hand, the air passing through the heat absorber 15 of the third air passage 27 is cooled in two stages by heat exchange between one side of the heat absorber 15 and the other side of the heat absorber 15, so that the other side of the heat absorber 15 has a low temperature. It becomes more susceptible to frost formation. Therefore, by providing the first air passage 23, the heated high-temperature air can be supplied from the moisture release section 19b of the dehumidifying rotor 19 to the other side of the heat absorber 15, thereby reducing frost formation on the heat absorber 15. I can do it.

In the above configuration, generally, as the airflow path becomes longer, friction loss on the wall surface of the airflow path increases and the air volume becomes smaller. Since the first airflow path 23 has a longer airflow path than the third airflow path 27, the amount of air passing through the front side of the main body case 1 on the other side of the heat absorber 15 (one side surface in the depth direction of the main body case) is reduced. Although there is a tendency, the first ventilation path 23 does not pass through one side of the heat absorber 15, so the ventilation resistance is smaller than that of the third ventilation path 27, and the imbalance in air volume between the first ventilation path 23 and the third ventilation path 27 is improved. This improves the imbalance in the amount of air passing through the heat absorber 15.

In this way, by balancing the wind speed distribution in the heat absorber 15, it is possible to avoid problems such as cases where the wind speed is too high in some areas and the air is cooled but cannot be cooled down to the dew point, resulting in a decrease in dehumidifying ability. In the case where the wind speed is too slow and the frost is likely to form at the lower part of the heat absorber 15, it is possible to prevent the frost from accumulating without being completely melted even after defrosting.

FIG. 7 is a sectional view taken along line CC in FIG. 3. As shown in FIGS. 3 and 7, the folded duct 25 is a guide plate that guides the air flowing from the suction port 2 in the second air passage 24 to the other side of the heat absorber 15 so that it flows above the heat absorber 15. It has 28. The guide plate 28 is a rectangular plate having a convex shape in the direction of the dehumidifying rotor 19 from the surface of the folded duct 25 facing the dehumidifying rotor 19, and is arranged near the upstream side of the dehumidifying part 19b of the dehumidifying rotor 19 in the first air passage 23.

Specifically, the guide plate 28 has a vertically elongated rectangular shape, and one long side is fixed to the inner surface of the folded duct 25 so that the longitudinal direction extends in the vertical direction. The short side of the guide plate 28 extends from the inner surface of the folded duct 25 toward the dehumidifying rotor 19 side. The lower end (shorter side on the lower side) of the guide plate 28 is in contact with the upper surface of the mounting base 9, and there is a gap between the upper end (shorter side on the upper side) of the guide plate 28 and the inner surface of the folded duct 25. . In the second air passage 24, the air sucked from the suction port 2 by the air blower 7 flows into the folded duct 25 from the communication hole 26 of the folded duct 25, and then hits the guide plate 28 surface and changes its direction. Flows to the top of the. As a result, the warm air that has passed through the heating portion 22 of the first air passage 23 can easily flow toward the lower portion of the other side of the heat absorber 15.

Here, in the heat absorber 15, the refrigerant temperature is kept constant in the two-phase region where latent heat is exchanged in the refrigerant flowing inside the heat absorber 15, but the refrigerant temperature increases in the superheat degree region where it becomes a gas. Therefore, the temperature is low in the upstream part (the lower part of the heat absorber 15) which is the two-phase region of the refrigerant path, and the temperature is higher in the downstream part (the upper part of the heat absorber 15) which is the overheating region. Frost will progress more easily.

That is, by providing the guide plate 28, the warm air that has passed through the heating portion 22 of the first air flow path 23 can be efficiently supplied to the lower part of the heat absorber 15 where the temperature is low, so that the frost buildup on the heat absorber 15 can be efficiently supplied. can be reduced.

The dehumidifying device according to the present invention can balance the wind speed distribution in the horizontal and vertical directions of the heat absorber, improve dehumidification performance, and improve frost formation at the bottom of the heat absorber. It is useful as a dehumidifying device used for drying clothes and dehumidifying.

1 Main body case 2 Suction port 3 Air outlet 4 Louver 5 Operation part 6 Heat pump 7 Air blower part 8 Dehumidifying rotor part 9 Mounting stand 9a Mounting plate 9b Support leg 9c Space part 10 Water storage tank part 10a Tank 10b Water collection cover 11 Control part 12 Compression Machine 13 Heat sink 13a Heat sink 13b Connecting pipe 14 Expander 15 Heat sink 15a Heat absorbing fin 15b Connecting pipe 16 Motor 17 Fan 17a Main plate 17b Blade 17c Suction ring 17d Rotating shaft fixing part 18 Casing 18a Inlet 18b Outlet 19 Dehumidifying rotor 19 a Moisture absorption section 19b Moisture release section 20 Rotor frame 21 Drive section 22 Heating section 23 First air passage 24 Second air passage 25 Turned back duct 26 Communication hole 27 Third air passage 28 Guide plate

Claims (2)

A main case having an inlet and an outlet;
and a heat pump provided within the main body case,
The heat pump is formed by a compressor, and a radiator, an expander, and a heat absorber sequentially provided downstream of the compressor,
Inside the main body case,
a blowing unit that blows the air taken into the main body case from the suction port to the blowout port through the heat radiator and the heat absorber;
The air passage of the air blowing section includes a moisture releasing section of a dehumidifying rotor provided between the heat radiator and the heat absorber, and a moisture absorbing section of the dehumidifying rotor provided between the heat absorber and the air outlet. have,
The air sucked from the suction port by the air blower passes through the heat radiator, the moisture release portion of the dehumidification rotor, the heat absorber, the moisture absorption portion of the dehumidification rotor, and the air blower in sequence. a first air passage that blows air to the air outlet;
a second air passage in which the air sucked in from the suction port by the air blowing section is blown to the outlet through the heat absorber, the moisture absorption section of the dehumidifying rotor, and the air blowing section; has
The moisture releasing section and the moisture absorbing section of the dehumidifying rotor are arranged horizontally,
The downstream side of the heat absorber in the first air passage and the second air passage is arranged so that the upstream side of the moisture absorption part of the dehumidification rotor in the first air passage and the second air passage are opposite to each other. , a folded duct is provided so as to cover the upstream side of the heat absorber in the first air passage and the second air passage, and the downstream side of the moisture release part of the dehumidification rotor in the first air passage,
The folded duct has a communication hole that communicates the suction port and the heat absorber,
The air sucked in from the suction port by the air blower is sent to the heat radiator, the moisture release part of the dehumidifying rotor, one side in the horizontal direction of the heat absorber, the inside of the folded duct, and the heat absorber. A dehumidifier comprising: a third air passage through which air is blown to the outlet through the other side in the horizontal direction of the dehumidifying rotor, the moisture absorbing section of the dehumidifying rotor, and the air blowing section . The folded duct has a guide plate that guides the air flowing from the suction port in the second air passage to the heat absorber to flow above the heat absorber ,
The guide plate has a vertically elongated rectangular shape, and one long side is fixed to the inner surface of the folded duct so that the longitudinal direction extends in the vertical direction, and the short side of the guide plate extends from the inner surface of the folded duct to the The dehumidifying device according to claim 1 , wherein the dehumidifying device extends toward the dehumidifying rotor and has a gap between an upper end of the guide plate and an inner surface of the folded duct .