JP5014378B2 - Dehumidifying dryer - Google Patents

Description

  The present invention relates to a dehumidifying dryer for dehumidifying and drying indoor air.

  Conventionally, a dehumidifying dryer using an adsorbent has been proposed. For example, Patent Document 1 includes a dehumidification rotor configured using ceramic paper carrying an adsorbent (hygroscopic material) such as zeolite or silica gel, and sucks air in the bathroom and enters the bathroom via the dehumidification rotor. There is described a dehumidifying dryer (a bathroom heating dryer with a dehumidifying function) having a circulating air path to be returned and a regenerating air path that sucks air in the bathroom and discharges it outside the bathroom via a regenerating heater and a dehumidifying rotor. In this dehumidifying dryer, since the dehumidification rotor is arranged so as to cross each of the circulation air passage and the regeneration air passage, dehumidification in the bathroom by flowing the air in the bathroom to the circulation air passage, It is possible to perform regeneration of the adsorbent at a time by heating the air sucked into the regeneration air passage by the regeneration heater and then sending it to the dehumidification rotor.

  In Patent Document 2, a refrigerant circuit is configured using two heat exchangers carrying an adsorbent, and the circulation direction of the refrigerant in the refrigerant circuit is configured to be reversible, so that the refrigerant circulation direction is reversed. Thus, each of the two heat exchangers alternately functions as an evaporator and a condenser so that the dehumidification in the room is performed on the evaporator side and the moisture is transferred to the outdoor air on the condenser side. A dehumidifying dryer (humidity control device) that switches the distribution channel is described. In the dehumidifying dryer, the refrigerant circuit is disposed in the casing.

Japanese Patent No. 3804866 Japanese Patent No. 3815485

  However, as in the dehumidifying dryer described in Patent Document 1, it is difficult to reduce the number of parts in a dehumidifying dryer having a regeneration heater and a dehumidification rotor for regenerating the adsorbent separately. In addition, when the dehumidification rotor is disposed so as to cross each of the circulation airflow path and the regeneration airflow path, the two airflows are prevented from mixing the air dehumidified by the dehumidification rotor and the air humidified by the regeneration of the adsorbent. Since the seal structure for dividing the path becomes complicated, it is difficult to reduce the size of the apparatus. Furthermore, since the air heated by the regenerative heater is sent to the dehumidification rotor to regenerate the adsorbent, only a part of the heat energy generated by the regenerative heater is used for regenerating the adsorbent, resulting in a lot of energy waste.

  Moreover, in the dehumidification dryer of patent document 2 which comprises a refrigerant circuit using two heat exchangers which carry | supported adsorption agent, and each of these two heat exchangers functions as an evaporator and a condenser alternately, Is complicated, it is difficult to reduce the size of the apparatus. The adsorbent carried on the heat exchanger is regenerated when the heat exchanger functions as a condenser, but the adsorbent is adsorbed on the adsorbent because the temperature at the time of regeneration is about 60 ° C. at the maximum. It is difficult to sufficiently desorb the moisture, and the regeneration efficiency of the adsorbent is low.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to obtain a dehumidifying dryer that can efficiently regenerate the adsorbent and can be easily downsized.

  The dehumidifying dryer of the present invention sucks the air in the circulation chamber having the indoor air inlet for sucking indoor air and the indoor air outlet for blowing out the sucked indoor air into the room, and the air in the other chamber An exhaust air passage having an air inlet for the other room and an exhaust air outlet for exhausting the air in the other room, and an air flow for circulation from the indoor air inlet to the indoor air A circulation blower that sucks into the passage and blows it out from the indoor air outlet, a heater disposed on the upstream side of the indoor air outlet in the circulation air passage, and an adsorbent for dehumidification carried by the heater A circulation air passage opening / closing section that is disposed at the indoor air outlet and that can open and close the circulation air passage, a ventilation opening that allows the circulation air passage and the exhaust air passage to communicate with each other, and the ventilation opening Open and close the circulation air passage and the exhaust air passage An air passage partition provided with a vent opening / closing portion that switches between a communication state and a state separated from each other, and an exhaust air passage that is disposed in the exhaust air passage, and the air in the other chamber is transferred from the air intake port of the other chamber to the exhaust air passage. An exhaust blower that sucks and exhausts to the outside from the exhaust port, a circulation fan, a heater, a circulation air path opening and closing unit, a ventilation port opening and closing unit, and a control unit that controls the operation of the exhaust fan, When dehumidifying the interior of the room, the circulation air passage opening / closing part is opened and the ventilation opening / closing part of the air passage partitioning part is closed to operate the circulation blower to desorb moisture from the adsorbent. When regenerating, the heater is operated, and the moisture desorbed from the adsorbent by regenerating the adsorbent opens the circulation air path opening / closing section and opens the vent opening opening / closing section of the air path partitioning section by the control section. By operating the exhaust fan, the exhaust port It characterized in that it is a possible discharge Luo outside.

  In the dehumidifying dryer of the present invention, since the adsorbent is supported on the heater, most of the heat energy generated in the heater can be used for regeneration of the adsorbent. Further, the number of parts is reduced as compared with the case where parts for supporting the adsorbent are provided separately from the heater. Furthermore, since the adsorption of moisture by the adsorbent and the desorption of moisture from the adsorbent are performed in the circulation air passage, the seal structure for separating the circulation air passage from the exhaust air passage is relatively simple. can do. Therefore, according to the present invention, it is possible to obtain a dehumidifying dryer which can efficiently regenerate the adsorbent and can be easily miniaturized.

FIG. 1 is a perspective view schematically showing an example of a dehumidifying dryer according to the present invention from the indoor side. FIG. 2 is a perspective view schematically showing the inside of the dehumidifying dryer shown in FIG. 1 from the indoor side. FIG. 3 is a perspective view schematically showing the state when the dehumidifying dryer shown in FIG. 1 is performing a regeneration operation from the indoor side. FIG. 4 is a perspective view schematically showing an internal state from the indoor side when the dehumidifying dryer shown in FIG. 1 is performing a regeneration operation. FIG. 5 shows an example of a state during regeneration of the adsorbent in the dehumidifying dryer of the present invention configured to regenerate the adsorbent in a state where generation of airflow around the heater is suppressed. It is a schematic diagram. FIG. 6 shows another example of the adsorbent regeneration state in the dehumidifying dryer of the present invention configured to regenerate the adsorbent while suppressing the generation of airflow around the heater. It is a schematic diagram which shows an example. FIG. 7 is a schematic diagram showing an example of a dehumidifying dryer according to the present invention that includes a temperature sensor that detects the temperature of the heater. FIG. 8 is a perspective view schematically showing an example of a dehumidifying dryer according to the present invention that includes a sensing unit that detects the state of air in a room from the indoor side. FIG. 9 is a perspective view schematically showing an example of the dehumidifying dryer according to the present invention in which the direction of blowing air from the circulation air passage is variable. FIG. 10 is a perspective view schematically showing an example of the dehumidifying dryer according to the present invention configured to be able to supply humid air generated by regenerating the adsorbent to another chamber from the outdoor side. FIG. 11 is a perspective view schematically showing an internal state from the outdoor side when the dehumidifying dryer shown in FIG. 10 exhausts humid air. FIG. 12 is a perspective view schematically showing an internal state from the outdoor side when the dehumidifying dryer shown in FIG. 10 supplies humid air to the other chamber.

  Hereinafter, embodiments of the dehumidifying dryer of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the embodiments described below.

Embodiment 1 FIG.
FIG. 1 is a perspective view schematically showing an example of the dehumidifying dryer according to the present invention from the indoor side, and FIG. 2 is a perspective view schematically showing the inside of the dehumidifying dryer shown in FIG. 1 from the indoor side. is there. The dehumidifying dryer 70A shown in these figures is installed on a desired location in a building, for example, a ceiling or a wall of a bathroom, to dehumidify and dry the air in the room, and to the other two rooms (others in the building). Ventilate the room.

  The illustrated dehumidifying dryer 70A includes a housing 20A, a circulation fan 25, a heater 30 carrying an adsorbent (not shown), a heater holding unit 35, and the like for dehumidifying, drying and ventilating the room. A circulation air passage opening / closing section 40A, an air passage partition section 50 (see FIG. 2), an exhaust fan 55 (see FIG. 2), a control section 60A, and a remote controller (not shown) are provided. Hereinafter, components of the dehumidifying dryer 70A will be described individually.

  The casing 20A is disposed on the open end side of the box 10A with the upper end side (indoor side) in FIGS. 1 and 2 open, and the inside of the casing 20A is defined as the outside. A partition plate 15 (see FIG. 1) for partitioning is provided, and a first duct connection portion 1, a second duct connection portion 3, and a third duct connection portion 5 are attached to the side surface of the box 10A. The 1st duct connection part 1 is connected to the duct connected to other rooms (for example, washroom) different from the room (for example, bathroom) in which 70 A of dehumidification dryers are installed, and the 2nd duct connection part 3 is dehumidification drying. The third duct connection portion 5 is connected to the exhaust duct, and is connected to a ventilation duct for another room (for example, a dressing room or a living room) different from the room in which the machine 70A is installed.

  The first duct connection portion 1 is formed with a first other-chamber air suction port 1a that communicates with the interior of the box 10A through a ventilation port (not shown) provided on the side surface of the box 10A. The second duct connecting portion 3 is formed with a second other-chamber air suction port 3a that communicates with the inside of the box 10A through a ventilation port (not shown) provided on the side surface of the box 10A. Further, the third duct connection portion 5 is formed with an exhaust port 5a that communicates with the inside of the box 10A through a vent (not shown) provided on the side surface of the box 10A.

  On the other hand, the partition plate 15 constituting the housing 20A has an indoor air suction port 15a communicating with the inside of the housing 20A and a holding portion for causing the heater holding portion 35 holding the heater 30 to protrude from the box 10A. An insertion port 15b is provided. The dehumidifying dryer 70A is installed, for example, on the ceiling of the room such that the indoor air suction port 15a opens indoors.

  The circulation fan 25 is disposed in the housing 20A. This circulation blower 25 is a single suction sirocco fan blower provided with a suction port 25a communicating with the indoor air suction port 15a, and its blower outlet (not shown) is on the heater 30 side. Further, the upper surface (the upper surface in FIG. 2) of the circulation fan 25 is in close contact with the lower surface (the lower surface in FIG. 1) of the partition plate 15.

For example, the heater 30 includes a plurality of heat generating elements arranged at intervals, or a plurality of heat dissipating fins are provided around the heat generating elements to form air flow paths around the heat generating elements and the heat dissipating fins, Constructed using an electric heater configured to dissipate heat by passing air through the flow path, or an electric heater in which a heating element having an electric insulator or a heat conductor disposed in a metal pipe is housed in a metal pipe In addition, an adsorbent such as silica gel or zeolite is supported on the surface. The heater 30 is held by a cylindrical heater holding portion 35 and is arranged on the outer upper side (the upper side in FIG. 2) of the outlet of the circulation fan 25. From the viewpoint of suppressing overheating of the heater 30, it is preferable to use a PTC (Positive Temperature Coefficient) heater as the heater 30. Note that the circulation fan 25 and the heater 30 only need to be in a circulation air passage FP ₁ (see FIG. 2) described later, and the order thereof may be reversed.

The circulation air passage opening / closing section 40A is arranged at the air outlet in the heater 30, in other words, the indoor air outlet in the circulation air passage FP ₁ (see FIG. 2). Open and close the exit. In the example shown in the figure, the circulation air passage opening / closing part 40A is constituted by an electric louver having four blades 40a arranged in parallel.

The air passage partition 50 is disposed between the circulation fan 25 and the exhaust fan 55, and communicates with the circulation air passage FP ₁ and an exhaust air passage FP ₂ (see FIG. 2), which will be described later. And switch to a state separated from each other. For this purpose, the illustrated airway partition 50 includes a partition wall 43 disposed between the circulation fan 25 and the exhaust fan 55, a ventilation port 45 formed in the partition wall 43, and an electric motor, for example. It has a vent opening / closing part 47 that is configured using a damper and opens and closes the vent 45. By opening the air vent 45 by the air vent opening / closing portion 47 (hereinafter referred to as “opening the air vent opening / closing portion 47”), the circulation air passage FP ₁ and the exhaust air passage FP ₂ communicate with each other. By closing the ventilation opening 45 by the opening / closing part 47 (hereinafter referred to as “closing the ventilation opening / closing part 47”), the circulation air path FP ₁ and the exhaust air path FP ₂ are separated from each other. In addition, in the illustrated dehumidifying dryer 70A, the above-described heater holding unit 35 is arranged on the upper side (the upper side in FIG. 2) of the air channel partition unit 50, but the position of the heater holding unit 35 is the air channel. The position is not limited to the upper side of the partition portion 50, but may be a position where the circulating air flowing through the circulation air passage FP ₁ can pass through the heater 30.

The circulation air passage opening / closing section 40A described above opens the air outlet in the heater 30 (hereinafter referred to as “circulation air passage opening / closing section 40A is opened”). When the circulation blower 25 is operated while being closed, the room air flows into the circulation blower 25 through the indoor air suction port 15a and the suction port 25a of the circulation blower 25. And it blows out to the heater 30 side through the internal flow path of the air blower 25 for circulation, and blows off indoors (room in which 70 A of dehumidification dryers are installed) through the flow path in the heater 30. The air passage at this time is the circulation air passage FP ₁ . The flow direction of air in the circulation air passage FP ₁ is indicated by white arrows in FIG.

  The exhaust blower 55 is a single-suction sirocco fan blower, similar to the circulation blower 25 described above, and is disposed in the housing 20 </ b> A adjacent to the circulation blower 25 and adjacent to the air passage partition 50. Yes. The suction port 55a in the exhaust fan 55 is on the partition plate 15 side and is separated from the lower surface (the lower surface in FIG. 1) of the partition plate 15, and the outlet (not shown) of the exhaust fan 55 is It communicates with the exhaust port 5a.

If the exhaust fan 55 is operated when the vent opening / closing portion 47 is closed, the other chamber air suction port 1a and the second other chamber air suction port 3a are connected to the other chamber in the housing 20A. Air is sucked and flows into the exhaust fan 55 through the suction port 55 a of the exhaust fan 55. And it blows off to the exhaust port 5a through the internal flow path of the exhaust fan 55, and is exhausted outside from the exhaust port 5a. Air passage at this time is the exhaust air passage FP _2. The flow direction of air in the exhaust air passage FP ₂ is indicated by black arrows in FIG.

  60 A of control parts perform operation | movement of the air blower 25 for circulation, the heater 30, the air path opening / closing part 40A for circulation, the ventilation opening / closing part 47, and the exhaust fan 55 according to the command input from the remote controller which abbreviate | omitted illustration. Each is controlled separately to cause the dehumidifying dryer 70A to perform a dehumidifying operation, an adsorbent regeneration operation, and the like.

In the above dehumidifying operation, as shown in FIG. 2, the circulation air passage opening / closing part 40A is opened, and the ventilation opening / closing part 47 is closed. Further, the circulation fan 25 is activated. The heater 30 is not energized. As a result, room air dehumidification dryer 70A is installed flows from the indoor air inlet 15a to the circulation air path FP _1, moisture of the air to the adsorbent carried on the heater 30 is adsorbed And dehumidified. The dehumidified air is blown out from the heater 30 into the room through the circulation air passage opening / closing part 40A. At this time, if the exhaust fan 55 is also started, the ventilation operation of the other room can be performed together with the dehumidification operation.

  On the other hand, in the above regeneration operation, as shown in FIGS. 3 and 4, the circulation air passage opening / closing portion 40A closes the air outlet in the heater 30 (hereinafter, “circulation air passage opening / closing portion 40A is closed). "). Moreover, as shown in FIG. 4, the wind opening / closing part 47 is opened. Then, energization of the heater 30 is started and the exhaust fan 55 is started. The circulation fan 25 may be activated or may not be activated.

3 is a perspective view schematically showing the state when the dehumidifying dryer shown in FIG. 1 is performing the regeneration operation from the indoor side, and FIG. 4 is a diagram showing that the dehumidifying dryer shown in FIG. It is a perspective view which shows roughly the internal state when performing the reproduction | regeneration driving | operation from the indoor side. The white arrows in FIG. 4 indicate the flow direction of air flowing from the circulation air passage FP ₁ to the exhaust air passage FP ₂ , and the black arrows indicate the air flow in the exhaust air passage FP _2. Indicates direction.

The circulation air passage opening / closing section 40A is closed, the ventilation opening / closing section 47 is opened, energization of the heater 30 is started, and the exhaust blower 55 is started. The adsorbent is heated by the heater 30 and moisture is desorbed from the adsorbent, and the desorbed moisture flows from the circulation air passage FP ₁ into the exhaust air passage FP ₂ through the vent 45 (see FIG. 4). Then, it is exhausted from the exhaust port 5a. At this time, the air that flows into the circulation air passage FP ₁ from the indoor air suction port 15a also flows into the exhaust air passage FP ₂ from the ventilation port 45 and is exhausted from the exhaust air port 5a. Also, another chamber of air flowing into the exhaust air passage FP ₂ from each of the first other chamber air inlet 1a and the second other chamber air inlet 3a is also exhausted from the exhaust port 5a. Therefore, during the regeneration operation, ventilation of the room (own room) in which the dehumidifying dryer 70A is installed and ventilation of other rooms are naturally performed. Ventilation in the room is only performed with a small amount of air necessary for regeneration of the adsorbent and moisture desorption, so the amount of air flowing into the room from other rooms during the regeneration operation is small, and the humidity environment of the room Is unlikely to change significantly. Moreover, although not shown in figure, the opening / closing part which can open and close this other room air suction port is provided in at least one of the 1st other room air suction port 1a and the 2nd other room air suction port 3a, and the presence or absence of ventilation of another room is checked. You may comprise so that it can select.

  The temperature of the heater 30 during the regeneration operation can be selected as appropriate according to the type of adsorbent carried on the heater 30. For example, when silica gel is used as the adsorbent, moisture can be sufficiently desorbed from the silica gel even when the temperature of the heater 30 is relatively low (for example, about 60 ° C. to 100 ° C.) and the regeneration operation is performed. Can do. On the other hand, when zeolite is used as the adsorbent, the zeolite is an adsorbent that is suitable for drying indoors and objects to be dried, but silica gel is regenerated to desorb and regenerate the water once adsorbed. Therefore, it is preferable that the temperature of the heater 30 during the regeneration operation is relatively high.

  In addition, the timing of the regeneration operation can be selected as appropriate. For example, the regeneration operation may be performed after the dehumidification operation has been performed for a long time and the adsorption capacity of the adsorbent has greatly decreased, or the regeneration is performed when the dehumidification operation is performed for a relatively short time and the adsorption capacity of the adsorbent is still high. You may drive. In addition, when a large heater cannot be used as the heater 30 because the installation space is small, a small heater may be used. When a small heater 30 is used, the amount of adsorbent that can be carried on the heater 30 is reduced, so that the moisture adsorption and dehumidification speed is slow, but dehumidification and regeneration are repeated in a short cycle. As a result, although it takes time, a desired dehumidifying amount can be ensured, so that the dehumidifying dryer 70A can be easily downsized. At the time of the dehumidifying operation performed following the regeneration operation, the heat generated in the heater 30 during the regeneration operation is input into the own room by blowing air, and the temperature of the own room rises. When the dryer 70A is used as a bathroom dryer, a dryer for a room to be dried, etc., drying is performed efficiently.

  If necessary, a cooling operation for cooling the heater 30 may be performed following the regeneration operation. The cooling operation can be performed in the same manner as the dehumidifying operation described above. Or it can carry out similarly to the above-mentioned reproduction | regeneration driving | operation except the point of opening the air path opening / closing part 40A for circulation, and the point that the heater 30 is not started.

In the dehumidifying dryer 70A that performs the dehumidifying operation and the adsorbent regeneration operation as described above, since the adsorbent is carried by the heater 30, most of the thermal energy generated in the heater 30 is regenerated. Can be used. Further, the number of parts is reduced as compared with the case where the parts for supporting the adsorbent are parts different from the heater 30. Further, the adsorption of moisture by the adsorbent and the desorption of moisture from the adsorbent are performed in the circulation air passage FP ₁ , and the water desorbed from the adsorbent flows from the ventilation port 45 to the exhaust air passage FP ₂ to be exhausted. can be discharged from the mouth 5a, a seal structure for distinguishing the circulation air passage FP ₁ and exhaust air passage FP _2, that is to say the relatively simple structure of the air passage partition part 50. Therefore, in the dehumidifying dryer 70A, the adsorbent can be efficiently regenerated and the size can be easily reduced.

  Increased efficiency of adsorbent regeneration leads to a reduction in energy consumption, and a reduction in the number of parts improves the workability when disassembling the dehumidifying dryer for disposal and the separation of materials after disassembly. It leads to improvement. In addition, downsizing of the dehumidifying dryer leads to a reduction in packaging at the time of packaging, an increase in the efficiency of transportation during distribution, an improvement in collection and transportability at the time of disposal, and a reduction in the environmental burden at the time of disposal.

  It should be noted that the dehumidifying dryer 70A can perform heating operation, ventilation operation, drying operation, ventilation operation of other rooms, etc. in the room (own room) in which the dehumidifying dryer 70A is installed. The heating operation of the own room is performed in the same manner as the dehumidifying operation described above except that the heater 30 is energized. The ventilation operation of the own room is performed in the same manner as the regeneration operation described above except that the heater 30 is not energized.

  Further, the drying operation of the own room is performed in the same manner as the above-described regeneration operation except that the circulation air passage opening / closing part 40A is opened. For example, if the dehumidifying dryer 70A is installed in a bathroom and a drying operation is performed, the dehumidifying dryer 70A is used as a conventional hot air dryer that performs ventilation while blowing hot air to dry the bathroom and clothes. You can also The ventilation operation of another room (other room) different from the own room can be performed in the same manner as the dehumidifying operation described above except that only the exhaust blower 55 is activated. Of course, when the ventilation operation of the other room is performed, the circulation air passage opening / closing part 40A may be open or closed.

Embodiment 2. FIG.
The dehumidifying dryer of the present invention may be configured to regenerate the adsorbent in a state where generation of airflow around the heater is suppressed. Such a dehumidifying dryer is configured in the same manner as the dehumidifying dryer 70A (see FIGS. 1 to 4) described in the first embodiment, except that the control content of the control unit during regeneration of the adsorbent is changed. be able to.

  FIG. 5 is a schematic diagram illustrating an example of a state at the time of regeneration of the adsorbent in the dehumidifying dryer configured to regenerate the adsorbent in a state where generation of airflow around the heater is suppressed. The dehumidifying dryer 70B shown in the figure closes the circulation air path opening / closing part 40A, opens the vent opening opening / closing part 47, and stops each of the circulation fan 25 and the exhaust air fan 55 in the state of stopping the adsorbent. Perform playback. For this reason, generation | occurrence | production of the airflow around the heater 30 is suppressed during regeneration of adsorbent. Thereafter, the exhaust fan 55 is activated to exhaust the humid air generated by the regeneration of the adsorbent to the outside through an exhaust port (not shown).

  FIG. 6 is a schematic diagram illustrating another example of the state during regeneration of the adsorbent in the dehumidifying dryer configured to perform regeneration of the adsorbent while suppressing the generation of airflow around the heater. The dehumidifying dryer 70C shown in the figure regenerates the adsorbent in a state in which each of the circulation air path opening / closing section 40A and the ventilation opening / closing section 47 is closed and each of the circulation fan 25 and the exhaust fan 55 is stopped. I do. For this reason, while the adsorbent is being regenerated, the generation of airflow around the heater 30 is suppressed, including the occurrence of natural convection accompanying the temperature rise of the heater 30. Thereafter, the vent opening / closing part 47 is opened and the exhaust blower 55 is activated to exhaust the humid air generated by the regeneration of the adsorbent to the outside from the exhaust port (not shown).

The dehumidifying dryers 70B and 70C have the same configuration as the dehumidifying dryer 70A described in the first embodiment except that the control content of the control unit at the time of adsorbent regeneration is different. 5 or 6 are denoted by the same reference numerals as those used in FIGS. 1 to 4 and their description is omitted. In FIG. 5 and FIG. 6, reference sign “M ₁ ” indicates a motor of the circulation fan 25, and reference sign “F ₁ ” indicates a sirocco fan of the circulation fan 25. Reference sign “M ₂ ”. Indicates a motor of the exhaust fan 55, and reference numeral “F ₂ ” indicates a sirocco fan of the exhaust fan 55. Moreover, the wavy arrow indicated by the reference symbol “V” schematically indicates water vapor due to moisture desorbed from the adsorbent (not shown), and the reference symbol “S” indicates that moisture desorbed from the adsorbent is retained. Shows possible space.

  When the adsorbent is regenerated while suppressing the generation of airflow around the heater 30 as described above, the temperature drop of the heater 30 due to heat dissipation can be suppressed. Further, since the moisture desorbed from the adsorbent becomes water vapor and stays in the space S above the heater 30 (see FIGS. 5 and 6), the water vapor stays in the vicinity of the heater 30 and comes from the adsorbent. It is also difficult to prevent moisture desorption.

  Therefore, in each of the dehumidifying dryers 70B and 70C described above, the adsorbent can be sufficiently heated to desorb moisture from the adsorbent even if the amount of electric power supplied to the heater 30 is relatively small. It is possible to efficiently regenerate the adsorbent. For example, when an adsorbent having a high adsorbing capacity even in a low humidity environment such as zeolite is supported on the heater 30, heating at a high temperature is necessary to sufficiently regenerate such an adsorbent. The dehumidifying dryers 70B and 70C that can sufficiently heat the adsorbent even if the amount of electric power supplied to the heater 30 is relatively small are suitable from the viewpoint of reducing energy consumption.

  Further, since the adsorbent is regenerated in a state where each of the circulation fan 25 and the exhaust fan 55 is stopped, the room in which the dehumidifying dryers 70B and 70C are installed while the adsorbent is being regenerated ( Ventilation of the own room is not performed by the dehumidifying dryers 70B and 70C. For this reason, it is difficult for the outdoor air to flow into the room and the humidity in the room rises during the regeneration operation. When the regeneration operation and the dehumidification operation are repeated, the dehumidification operation is performed under relatively stable conditions. You can dehumidify and dry the air in your room.

  It is also possible to regenerate the adsorbent with the circulation air passage opening / closing section 40A opened, the ventilation opening / closing section 47 closed, and the circulation blower 25 and the exhaust blower 55 stopped. It is also possible to regenerate the adsorbent with each of the circulation air passage opening / closing section 40A and the vent opening opening / closing section 47 opened and the circulation fan 25 and the exhaust fan 55 stopped. Also, dehumidification is expected in which a relatively large amount of moisture is desorbed during one adsorbent regeneration by setting a long interval between adsorbent regenerations or carrying a large amount of adsorbent in the heater 30. In the dryer, the ventilation opening / closing portion 47 is opened temporarily during regeneration of the adsorbent or constantly during regeneration of the adsorbent, or the ventilation blower opening / closing portion 47 is opened and the exhaust blower 55 is activated. And you may comprise so that the humid air containing the desorbed | moisture content may be exhausted outside from an exhaust port.

Embodiment 3 FIG.
In the dehumidifying dryer of the present invention, the temperature of the heater may be detected by a temperature sensor, and the amount of electric power supplied to the heater 30 may be controlled according to the detected temperature. Such a dehumidifying dryer is the same as the dehumidifying dryer described in the first embodiment except for the presence / absence of the temperature sensor and the control content of the control unit during the regeneration operation (control related to the amount of electric power supplied to the heater 30). It can be configured in the same manner as 70A (see FIGS. 1 to 4) or the dehumidifying dryers 70B and 70C (see FIG. 5 or 6) described in the second embodiment.

  FIG. 7 is a schematic diagram illustrating an example of a dehumidifying dryer provided with a temperature sensor that detects the temperature of the heater. The dehumidifying dryer 70D shown in the figure has a temperature sensor 63 that detects the temperature of the heater 30, and a controller (not shown) monitors the temperature detected by the temperature sensor 63 during the regeneration operation. The amount of electric power supplied to the heater 30 is controlled according to the detected temperature. Specifically, when the temperature detected by the temperature sensor 63 reaches a preset temperature (hereinafter referred to as “condition value”), the amount of electric power applied to the heater 30 is reduced or the heater 30 is energized. Stop.

  The dehumidifying dryer 70D has the same configuration as the dehumidifying dryers 70B and 70C described in the second embodiment except for the presence / absence of the temperature sensor 63 and the control content of the control unit during the regeneration operation. The constituent members shown in FIG. 7 are denoted by the same reference numerals as those used in FIG. 5 or FIG.

  The above condition value that triggers the reduction of the amount of power input to the heater 30 or the stop of energization of the heater 30 can sufficiently desorb moisture from, for example, an adsorbent (not shown). The temperature is set by the manufacturer of the dehumidifying dryer 70D according to the type and amount of the adsorbent carried on the heater 30, and stored in advance in a storage element (not shown) in the control unit, for example. The control unit reduces the amount of electric power supplied to the heater 30 when the temperature detected by the temperature sensor 63 is equal to or higher than the above condition value, and sets the temperature of the heater 30 over the predetermined time. The temperature is maintained at or near the condition value, the amount of electric power supplied to the heater 30 is gradually decreased to gradually decrease the temperature of the heater 30, or the energization to the heater 30 is stopped and the heater is stopped. Let 30 cool naturally.

  In the dehumidifying dryer 70 </ b> D configured in this way, it is possible to suppress heating the adsorbent more than necessary during regeneration of the adsorbent, and therefore wasteful energy consumption can be suppressed. Although various types of heaters can be used as the heater 30, if the PTC heater described in the first embodiment is used, overheating of the heater 30 can be prevented and wasteful energy consumption can be easily suppressed.

Embodiment 4 FIG.
In the dehumidifying dryer of the present invention, the air condition of the room in which the dehumidifying dryer is installed, specifically, the humidity and temperature are detected to select at least one operating condition of the dehumidifying operation and the regeneration operation. Can be configured. Thus, when comprising a dehumidification dryer, the sensing part which detects the state of the said air is arrange | positioned in the vicinity of an indoor air inlet, for example.

  FIG. 8 is a perspective view schematically showing an example of a dehumidifying dryer provided with a sensing unit that detects the state of air in the room from the indoor side. In the dehumidifying dryer 70E shown in the figure, a sensing unit 65 for detecting the humidity and temperature of the room where the dehumidifying dryer 70E is installed is arranged on the side of the indoor air inlet 15a in the partition plate 15. The control unit 60E selects at least one of the operating conditions of the dehumidifying operation and the regeneration operation according to the detection result of the sensing unit 65, and the circulation fan 25, the heater 30, or the exhaust fan (not shown). To control the operation.

  The configuration of the dehumidifying dryer 70E includes the sensing unit 63, and the control unit 60E selects operating conditions according to the detection result of the sensing unit 65 when performing at least one of the dehumidifying operation and the regeneration operation. Except for the point to do, respectively, it can be set as the same structure as any of the dehumidification dryer 70A-70D demonstrated in Embodiment 1-3, for example. The remaining constituent members excluding the control unit 60E and the sensing unit 65 shown in FIG. 8 are denoted by the same reference numerals as those used in FIG.

  For example, when the humidity of the room where the dehumidifying dryer 70E is installed is high, the amount of moisture adsorbed per unit time by the adsorbent (not shown) carried by the heater 30 increases. Even if the dehumidifying operation time is shortened, the amount of moisture adsorbed by the adsorbent increases. If the amount of moisture adsorbed by the adsorbent is large, more heat energy is required to desorb moisture from the adsorbent in the regeneration operation. On the other hand, when the humidity of the room in which the dehumidifying dryer 70E is installed is low, the amount of moisture adsorbed per unit time by the adsorbent decreases. If the amount of moisture adsorbed by the adsorbent is small, the thermal energy required to desorb moisture from the adsorbent in the regeneration operation is also reduced.

  Therefore, when the above-described sensing unit 65 is configured with a humidity sensor, the control unit 60E detects the humidity (relative humidity) equal to or higher than a predetermined condition value when the sensing unit 65 (humidity sensor) detects the humidity. Compared to when the detected humidity is less than the condition value, the duration of one regeneration operation relative to the duration of one dehumidifying operation is made relatively long, or the amount of electric power input to the heater 30 during the regeneration operation To increase.

  The above condition values are determined by the manufacturer of the dehumidifying dryer 70E, and are stored in advance in, for example, a storage element (not shown) in the control unit 60E. There may be only one condition value, or two or more different values. In addition, the duration of one dehumidifying operation when the detected humidity of the sensing unit 65 is equal to or higher than the condition value, the duration of one regeneration operation, the amount of power input to the heater 30 during the regeneration operation, etc. It is determined for each condition value by the manufacturer of the dehumidifying dryer 70E, and data for managing them by a method such as table management is stored in the storage element in advance.

  The control unit 60E uses the above condition values and data stored in the storage element and the detection result of the sensing unit 65, and at least one of the operating conditions of the dehumidifying operation and the regeneration operation, specifically, the circulation fan 25. At least one of the operation content of the heater 30, the operation content of the heater 30, and the operation content of the exhaust fan, and according to the selected operation condition (operation content), the circulation fan 25, the heater 30, or the exhaust fan Control the behavior. When the dehumidifying dryer 70E is configured such that the control unit 60E selects only one operating condition of the dehumidifying operation and the regeneration operation according to the detection result of the sensing unit 65, the other operating condition is detected by the sensing unit 65. Regardless of the result, for example, the operating conditions are preset by the manufacturer of the dehumidifying dryer 70E.

  When the dehumidifying operation and the regeneration operation are alternately performed under the control of the control unit 60E, the sensing unit 65 can be configured by a temperature sensor. In this case, the remaining heat of the heater 30 is input into the room during the dehumidifying operation after the regeneration operation, and the temperature of the room gradually increases according to the degree of drying and humidity of the object to be dried. ), The controller 60E calculates the degree of the temperature rise, and the dehumidifying dryer 70E is configured to select at least one of the dehumidifying operation and the regenerating operation based on the result. it can.

  That is, if the degree of temperature rise is less than the condition value, it is considered that the dryness of the room to be dried is low and the humidity is high, and if the degree of temperature rise is equal to or greater than the condition value, Since it is considered that the dryness is high and the humidity is low, for example, as in the case where the sensing unit 65 is configured by a humidity sensor, at least one of the dehumidifying operation and the regenerating operation based on the detection result of the sensing unit 65 (temperature sensor). The dehumidifying dryer 70E can be configured so that the control unit 60E selects the operating conditions. The above-mentioned condition value relating to the degree of temperature rise is determined by the manufacturer of the dehumidifying dryer 70E, and is stored in advance in a storage element (not shown) in the control unit 60E, for example. There may be only one condition value, or two or more different values.

  When the sensing unit 65 is configured by the humidity sensor and the temperature sensor, the control unit 60E obtains the indoor absolute humidity from the detection results of these sensors, and at least one of the dehumidifying operation and the regenerating operation according to the absolute humidity. The dehumidifying dryer 70E can be configured so that the control unit 60E selects the operating conditions. In this case, data for obtaining the absolute humidity from the detection result of the humidity sensor and the detection result of the temperature sensor is stored in advance in a storage element (not shown) in the control unit 60E, for example. The selection of operating conditions can be performed in the same manner as when the sensing unit 65 is configured with only a humidity sensor.

  In the dehumidifying dryer 70E configured as described above, the operating condition of at least one of the dehumidifying operation and the regeneration operation may be set to an appropriate condition according to the air state of the room in which the dehumidifying dryer 70E is installed. As a result, wasteful energy consumption can be suppressed. Even if the relative humidity is the same value, the amount of moisture per unit volume in the air varies depending on the temperature, and as a result, the amount of moisture adsorbed by the adsorbent also changes, so from the viewpoint of suppressing wasteful energy consumption The humidity sensor and the temperature sensor constitute a sensing unit 65, and the control unit 60E selects at least one of the operating conditions of the dehumidifying operation and the regenerating operation according to the absolute humidity of the room obtained from the detection results of these sensors. It is preferable to configure the dehumidifying dryer 70E.

Embodiment 5 FIG.
In the dehumidifying dryer of the present invention, the direction of blowing air from the circulation air passage can be configured to be variable. For example, as in the dehumidifying dryer 70A described in the first embodiment, the circulation air passage opening / closing section 40A (see FIG. 1) is configured using an electric louver having a plurality of blades 40a arranged in parallel. In this case, a dehumidifying dryer in which the air blowing direction from the circulation air passage is variable is obtained by configuring the opening degree of the slats 40a to be continuously or stepwise changed by the control unit. . Also, a dehumidifying dryer with variable air blowing direction from the circulation air passage can be obtained by configuring the circulation air passage opening and closing section using an electric louver in which a plurality of blades are arranged vertically and horizontally. It is done.

  FIG. 9 is a perspective view schematically showing an example of the dehumidifying dryer in which the blowing direction of the air from the circulation air passage is variable. A dehumidifying dryer 70F shown in FIG. 1 includes a circulating air passage opening / closing portion 40B instead of the circulation air passage opening / closing portion 40A shown in FIG. It has the same composition as. 9 that are the same as those shown in FIG. 1 are given the same reference numerals as those used in FIG. 1 and description thereof is omitted.

  The circulation air passage opening / closing section 40B includes four blades 40a arranged in parallel and four pieces arranged in parallel in a direction intersecting with the blades 40a when viewed in plan, specifically in a direction orthogonal to the blades 40a. It is comprised using the electrically driven louver which has the wing plate 40b. In the circulation air passage opening / closing section 40B, the opening degree of each blade 40a can be controlled continuously or stepwise under the control of the controller 60F, and each blade 40b is controlled under the control of the controller 60F. Can be controlled continuously or stepwise. Therefore, in the dehumidifying dryer 70F, the blowing direction of the air from the circulation air passage is variable.

  In the dehumidifying dryer 70F configured in this way, for example, when there is an object to be dried in the room where the dehumidifying dryer 70F is installed, the blowing direction of the air from the circulation air passage is changed continuously or stepwise. Accordingly, it is possible to suppress the occurrence of drying unevenness in the object to be dried by uniformly applying the air after dehumidification to the object to be dried.

Embodiment 6 FIG.
The dehumidifying dryer of the present invention can also be configured so that humid air generated by desorbing moisture from the adsorbent and regenerating the adsorbent can be supplied to another chamber. In this case, if the user can select the exhaust of the humid air and the supply to the other room from a remote controller (not shown), the convenience is enhanced.

  FIG. 10 is a perspective view schematically showing an example of a dehumidifying dryer configured to be able to supply humid air generated by desorbing moisture from the adsorbent and regenerating the adsorbent to the other chamber from the outside. 11 is a perspective view schematically showing an internal state from the outdoor side when the dehumidifying dryer shown in FIG. 10 exhausts humid air, and FIG. 12 is a dehumidifying dryer shown in FIG. FIG. 4 is a perspective view schematically showing an internal state when the humid air is supplied to the other chamber from the outdoor side.

  A dehumidifying dryer 70G shown in FIGS. 10 to 12 includes a housing 20B instead of the housing 20A shown in FIGS. 1 and 2, and a humid air damper 67 (see FIG. 11) in the housing 20B. And a configuration similar to the dehumidifying dryer 70A shown in FIG. 1 and FIG. 2 except that a control unit 60G is provided instead of the control unit 60A. Have. 10 to 12 that are the same as those shown in FIG. 1 or FIG. 2 are given the same reference numerals as those used in FIG. 1 or FIG. Omitted.

The housing 20B includes a box 10B and a partition plate 15 (see FIGS. 11 and 12). The box 10B is connected to the box 10A shown in FIGS. 1 and 2 by a fourth duct. It has a structure with a portion 7 added. The 4th duct connection part 7 is located in the vicinity of the heater 30, and is connected to the air supply duct for other rooms different from the room where the dehumidification dryer 70G is installed. This fourth duct connecting portion 7, humid air outlet 7a communicating with the circulation air passage FP ₁ in the box body 10B through the vent holes 10d provided on the side surface of the box 10B (see FIG. 12) is formed Has been.

Furthermore, humid air damper 67, and open and close the ventilation port 10d operates under the control of the control unit 60G, and a circulation air passage FP ₁ and humid air outlet 7a intended to communicate or separated Yes, it is arranged in the box 10B. The control unit 60G controls the circulation fan 25, the heater 30, the circulation air path opening / closing part 40A, the ventilation port opening / closing part 47, the exhaust air blower 55, and the humid air damper 67 according to a command input from the remote controller. Each operation is controlled separately to cause the dehumidifying dryer 70G to perform a dehumidifying operation, an adsorbent (not shown) regeneration operation, and the like.

As shown in FIG. 11, when exhausting the humid air generated by the desorption of moisture from the adsorbent during the regeneration operation, the vent opening / closing portion 47 is opened and the vent 10 d is provided by the humid air damper 67. It is closed (hereinafter referred to as “damp air damper 67 is closed”). Further, energization to the heater 30 is started and the exhaust fan 55 is started. The humid air generated by desorption of moisture from the adsorbent (not shown) is activated when the ventilator opening / closing part 47 is opened and the exhaust air blower 55 is activated with the humid air damper 67 closed. Therefore, the air flows into the exhaust air passage FP ₂ through the air vent 45 (see FIG. 11) of the air passage partition 50 and is exhausted from the exhaust port 5a. The circulation fan 25 may be activated or may not be activated.

  Further, when supplying humid air generated by desorption of moisture from the adsorbent during the regeneration operation to the other chamber, as shown in FIG. 12, the vent opening / closing portion 47 is closed and the vent 10d is humid. It is opened by the air damper 67 (hereinafter referred to as “the humid air damper 67 is opened”). In addition, energization of the heater 30 is started and the circulation fan 25 is activated. The humid air generated by the desorption of moisture from the adsorbent (not shown) is activated when the circulation fan 25 is activated with the vent opening / closing part 47 closed and the humid air damper 67 opened. Therefore, the air flows into the humid indoor air outlet 7a through the vent 10d and is supplied to the other chamber. The exhaust fan 55 may be activated or may not be activated. In addition to controlling either the fully open or fully closed damper 67 for the humid air, for example, if the dehumidifying dryer 70G is configured to be controllable to half open, the exhaust of the humid air and the supply to the other chamber can be performed simultaneously. become.

10 to 12, reference numeral “M ₁ ” indicates the motor of the circulation fan 25, and reference numeral “M ₂ ” indicates the motor of the exhaust fan 55. Further, reference numeral “10a” in FIGS. 11 and 12 indicates a ventilation port provided on the side surface of the box body 10B to communicate the inside of the box body 10B with the first other chamber air suction port 1a. Reference numeral “10c” denotes a ventilation port that is provided on the side surface of the box 10B and communicates the inside of the box 10B with the exhaust port 5a.

  In the dehumidifying dryer 70G configured as described above, the humid air generated by desorbing moisture from the adsorbent can be used for humidifying the other chambers, so that it is easy to effectively use energy.

  The dehumidifying dryer of the present invention has been described with reference to the embodiment. However, as described above, the present invention is not limited to the above embodiment. For example, the dehumidifying dryer described in each of Embodiments 1 to 6 has a first other chamber air inlet and a second other chamber air inlet, but the other chamber air inlet is one. It can also be 3 or more.

  In addition, the position of the ventilation port for allowing the circulation air passage and the exhaust air passage to communicate with each other can be located on the side of the heater, or upstream or downstream of the circulation air passage from the heater. It can also be the side. If necessary, a dedicated ventilation port for ventilating the room where the dehumidifying dryer is installed and a damper for opening and closing the ventilation port are provided, and the air flowing into the housing from the ventilation port is used for exhaust The dehumidifying dryer can also be configured to flow directly into the air path. About the dehumidification dryer of this invention, various deformation | transformation, decoration, combination, etc. are possible besides having mentioned above.

  The dehumidifying dryer of the present invention can be used as a home or business dehumidifying dryer for dehumidifying and drying indoor air.

DESCRIPTION OF SYMBOLS 1a 1st other room air inlet 3a 2nd other room air inlet 5a Exhaust port 7a Humid air blower outlet 15a Indoor air inlet 25 Circulation fan 30 Heater 40A, 40B Circulation air path opening / closing part 40a, 40b 43 Bulkhead 45 Ventilation opening 47 Ventilation opening / closing part 50 Air passage partition part 55 Exhaust fan 60A, 60E, 60F, 60G Control part 63 Temperature sensor 65 Sensing part 67 Damp for humid air 70A-70G Dehumidification dryer FP _{1 For} circulation Air path FP ₂ exhaust air path S Space where moisture desorbed from the adsorbent can stay

Claims (16)

A circulation air passage having an indoor air inlet for sucking indoor air and an indoor air outlet for blowing the sucked indoor air into the room;
An exhaust air passage having an air inlet for the other room for sucking air in the other room and an air outlet for exhausting the air in the other room sucked;
A circulation fan that is disposed in the circulation air passage and sucks the indoor air from the indoor air suction port into the circulation air passage and blows it out of the indoor air outlet into the room;
A heater disposed upstream of the indoor air outlet in the circulation air passage;
An adsorbent for dehumidification carried on the heater;
A circulation air passage opening and closing section that is disposed at the indoor air outlet and can open and close the circulation air passage;
A ventilation port that allows the circulation air passage and the exhaust air passage to communicate with each other; and a state in which the circulation air passage and the exhaust air passage are communicated with each other by opening and closing the ventilation port; An airway partition provided with a vent opening / closing part to be switched to,
An exhaust fan that is disposed in the exhaust air passage and sucks the air in the other chamber from the air intake port of the other chamber into the exhaust air passage and discharges the air from the exhaust port to the outside;
A controller for controlling operations of the circulation fan, the heater, the circulation air path opening / closing unit, the ventilation port opening / closing unit, and the exhaust fan;
With
The controller, when dehumidifying the room, opens the circulation air passage opening and closing unit and closes the ventilation port opening and closing unit of the air passage partitioning unit to operate the circulation fan, and from the adsorbent When regenerating the adsorbent by desorbing moisture, operate the heater,
Moisture desorbed from the adsorbent due to regeneration of the adsorbent causes the controller to close the circulation air passage opening / closing portion and open the ventilation port opening / closing portion of the air passage partitioning portion to turn the exhaust fan. A dehumidifying dryer that can be discharged to the outside through the exhaust port by being operated.   2. The dehumidifying dryer according to claim 1, wherein when the adsorbent is regenerated, the control unit closes the circulation air path opening / closing unit.   3. The dehumidifying dryer according to claim 1, wherein when the adsorbent is regenerated, the control unit stops each of the circulation fan and the exhaust fan. 4.   The control unit opens the circulation air path opening / closing unit to operate the circulation fan and the heater so that the heat generated in the heater is input into the room to heat or dry the room. The dehumidifying dryer according to any one of claims 1 to 3, wherein the dehumidifying dryer can be used.   The control unit closes the circulation air passage opening / closing unit and opens the ventilation port opening / closing unit of the air passage partitioning unit to operate the exhaust fan, thereby ventilating the room and the other room. The dehumidifying dryer according to any one of claims 1 to 4, wherein the dehumidifying dryer can be performed at a time.   The dehumidification in the room and the ventilation in the other room can be performed at the same time by operating the exhaust fan by the controller when dehumidifying the room. The dehumidifying dryer according to one.   The said control part performs the control for the dehumidification in the said room, and the regeneration for the said adsorption agent, and the control for discharge | emission of the water | moisture content desorbed from this adsorption agent by turns. The dehumidification dryer as described in any one.   The dehumidifying dryer according to any one of claims 1 to 7, wherein the adsorbent is silica gel or zeolite.   The dehumidifying dryer according to any one of claims 1 to 8, wherein a space in which moisture desorbed from the adsorbent can stay is formed above the heater. A temperature sensor for detecting the temperature of the heater;
The dehumidifying dryer according to any one of claims 1 to 9, wherein the control unit controls an amount of electric power supplied to the heater according to a temperature detected by the temperature sensor.   The dehumidifying dryer according to any one of claims 1 to 10, wherein the heater is a PTC heater. A sensing unit that is disposed in the vicinity of the indoor air inlet and detects the state of the indoor air;
The control unit detects at least one of the operation content of the circulation fan when dehumidifying the room and the operation content of the heater and the exhaust fan when regenerating the adsorbent. It selects according to a result and controls operation | movement of the said air blower for circulation, the said heater, or the said air blower for exhaust_gas | exhaustion according to the selected content of operation | movement. Dehumidifying dryer.   The dehumidifying dryer according to claim 12, wherein the sensing unit is at least one of a humidity sensor and a temperature sensor. The circulation air passage opening and closing part is an electric louver,
The said control part controls the blowing direction of the indoor air from the said circulation air path by controlling the operation | movement of the said louver, and adjusting the opening degree of this louver. The dehumidification dryer as described in any one.   The louver has a plurality of first blades arranged in parallel and a plurality of second blades arranged in parallel, and when viewed in plan, the first blade plate and the second blade plate The dehumidifying dryer according to claim 14, characterized by crossing each other. A humid air outlet communicating with the circulation air passage;
A damper for humid air disposed between the circulation air passage and the humid air outlet to communicate or separate the circulation air passage and the humid air outlet;
Further comprising
The control unit controls the opening and closing of the damper for humid air when discharging the humid air containing moisture desorbed from the adsorbent by the regeneration of the adsorbent, so that the humid air is supplied to the exhaust air passage and the exhaust air. The dehumidifying dryer according to any one of claims 1 to 15, wherein the dehumidifying dryer flows into at least one of the humid air outlets.

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