WO2024053703A1 - Ventilation unit - Google Patents

Abstract

A ventilation unit (130) comprises a supply air fan, a ventilation hose (132), a suction port (SP), a blowing port (BP), an adsorption member, and a control unit. The adsorption member is provided in a ventilation path (VP) extending from the suction port (SP) to the blowing port (BP) through the supply air fan. The control unit performs air supply operation and air exhaust operation. The air supply operation involves driving the supply air fan to supply outdoor air to an indoor space (ID) through the ventilation hose (132) via the ventilation path (VP). The air exhaust operation involves driving the supply air fan in the same rotation direction as the air supply operation to exhaust indoor air to an outdoor space (OD) through the ventilation hose (132) without through the adsorption member.

Description

ventilation unit

Regarding ventilation units.

It is connected to the room through a ventilation hose, and a blower fan is driven to perform air supply and exhaust operations.

Patent Document 1 (Japanese Unexamined Patent Application Publication No. 2004-286432) discloses a ventilation unit that includes an adsorption member and, during exhaust operation, indoor air passes through the adsorption member and is exhausted to the outside.

In the ventilation unit of Patent Document 1, pollutants contained in the indoor air are adsorbed to the adsorption member during exhaust operation.

The present disclosure proposes a ventilation unit that suppresses contamination of the adsorption member during exhaust operation.

The ventilation unit of the first aspect includes a blower fan, a ventilation hose, an inlet, an outlet, an adsorption member, and a control section. The suction member is provided in the ventilation path from the suction port to the air outlet via the ventilation fan. The control unit performs air supply operation and exhaust operation. The air supply operation is an operation in which the blower fan is driven to supply outdoor air into the room from the ventilation path through the ventilation hose. The exhaust operation is an operation in which the blower fan is driven in the same rotational direction as the air supply operation, and indoor air is exhausted to the outside through the ventilation hose without passing through the suction member.

This ventilation unit performs an air supply operation in which air is supplied from a ventilation path in which an adsorption member is provided, and an exhaust operation in which a blower fan is driven in the same rotational direction as the air supply operation to exhaust air without passing through the adsorption member. . Therefore, this ventilation unit can supply outdoor air into the room through the adsorption member, and can prevent pollutants from adsorbing to the adsorption member during exhaust operation.

The ventilation unit according to the second aspect is the ventilation unit according to the first aspect, in which the suction member is provided between the suction port and the blower fan in the ventilation path.

This ventilation unit performs air supply and exhaust operations using the suction power of the blower fan. When a suction member is provided between the blower fan and the air outlet during exhaust operation, it is necessary to provide a path that can utilize the suction force and does not pass the suction member. Therefore, the exhaust route of the ventilation unit becomes complicated, making it difficult to switch between air supply operation and exhaust operation.

In this ventilation unit, the suction member is provided between the suction port and the ventilation fan in the ventilation path. Therefore, this ventilation unit can easily switch between an air supply operation in which the suction member is passed and an exhaust operation in which the adsorption member is not passed.

The ventilation unit of the third aspect is the ventilation unit of the first aspect or the second aspect, and further includes a switching mechanism. The switching mechanism switches between an air supply path that is an air path during air supply operation and an exhaust path that is an air path during exhaust operation.

This ventilation unit can more easily switch between air supply operation and exhaust operation using the switching mechanism that switches between the air supply route and the exhaust route.

The ventilation unit according to the fourth aspect is the ventilation unit according to the third aspect, and further includes an exhaust port. The exhaust port exhausts indoor air to the outside during exhaust operation. Further, the switching mechanism switches the exhaust path so that the air passes through the ventilation hose and reaches the exhaust port from the air outlet via the blower fan.

This ventilation unit is equipped with an exhaust port that discharges indoor air to the outside during exhaust operation, in addition to an inlet that sucks in outdoor air during air supply operation. Therefore, this ventilation unit can more easily switch between air supply operation and exhaust operation using the exhaust port.

The ventilation unit according to the fifth aspect is the ventilation unit according to the fourth aspect, and further includes a heater. The adsorption member is a humidifying rotor. The heater heats the air introduced into the rotor. The control unit further performs a regeneration operation in which outdoor air is sucked in, heated by the heater, passed through the rotor, and then discharged outside through the exhaust port again.

This ventilation unit can perform humidification by supplying moisture to the air using an adsorption member that is a humidification rotor. In addition, this ventilation unit performs a regeneration operation in which the heated air removes moisture from the rotor. Therefore, the present ventilation unit can regenerate the moisture adsorption capacity of the rotor. Furthermore, in this ventilation unit, the exhaust port used during the regeneration operation is the same as the exhaust port used during the exhaust operation. This ventilation unit does not require an additional exhaust port for regeneration operation, and can perform regeneration operation using the existing structure. Therefore, the structure of this ventilation unit can be simplified.

The ventilation unit according to the sixth aspect is the ventilation unit according to the fifth aspect, in which the switching mechanism is such that the regeneration path that is the air path during regeneration operation is such that the air sucked from the suction port is exhausted via the blower fan. Switch so that the route goes to the mouth.

Therefore, the present ventilation unit can more easily switch between other operations and regeneration operation using the switching mechanism.

The ventilation unit according to the seventh aspect is the ventilation unit according to any one of the fourth to sixth aspects, and further includes a shutter. The shutter closes the exhaust port during air supply operation and opens the exhaust port during exhaust operation.

Therefore, this ventilation unit can more easily switch between air supply operation and exhaust operation.

The ventilation unit according to the eighth aspect is a ventilation unit according to any one of the first to fourth aspects, and the seventh aspect, in which the adsorption member includes a humidifying rotor, a pre-filter, a dust collection filter, At least one of the deodorizing filters.

If the adsorption member is a humidification rotor, this ventilation unit can perform humidification that supplies moisture to the air. Further, this ventilation unit can clean the air when the adsorption members are a pre-filter, a dust collection filter, and a deodorizing filter.

1 is a schematic configuration diagram showing an air conditioner 100. FIG. FIG. 3 is a sectional view showing a unit main body 131. FIG. FIG. 3 is a top view showing the unit main body 131. FIG. 3 is a schematic configuration diagram showing a humidifying device 320. FIG. 2 is a control block diagram of an indoor unit 110 and an outdoor unit 120. FIG. 2 is a schematic configuration diagram showing an air supply path SU in the air conditioner 100. FIG. 3 is a sectional view showing an air supply path SU in the unit body 131. FIG. 3 is a top view showing an air supply path SU in the unit main body 131. FIG. 3 is a schematic configuration diagram showing an air supply path SU in a humidifier 320. FIG. 2 is a schematic configuration diagram showing an exhaust path EX in the air conditioner 100. FIG. 3 is a cross-sectional view showing an exhaust path EX in the unit main body 131. FIG. 3 is a top view showing an exhaust path EX in the unit main body 131. FIG. 3 is a schematic configuration diagram showing a regeneration path RP in the air conditioner 100. FIG. 7 is a sectional view showing a regeneration path RP in the unit main body 141. FIG. 7 is a top view showing a regeneration path RP in the unit main body 141. FIG. 1 is a schematic configuration diagram showing an air conditioner 102. FIG. 5 is a perspective view showing the internal structure of a unit main body 50. FIG. FIG. 3 is a perspective view of the unit main body 50 with some of its components removed. FIG. 5 is a top view of the unit main body 50 with some of its components removed. FIG. 5 is an exploded perspective view of a unit main body 50. FIG. FIG. 5 is an exploded perspective view of some components of the unit body 50. FIG. 5 is a schematic cross-sectional view of a unit main body 50. FIG. It is a schematic block diagram which shows the operation|movement of the shutter 74a during air supply operation. FIG. 7 is a schematic configuration diagram showing the operation of the shutter 74a during regeneration operation. FIG. 5 is a perspective view showing the internal structure of the unit main body 50 during exhaust operation. FIG. 5 is an exploded perspective view of the unit main body 50 during exhaust operation. FIG. 5 is an exploded perspective view of some components of the unit main body 50 during exhaust operation. FIG. 5 is a schematic cross-sectional view of the unit main body 50 during exhaust operation. FIG. 7 is a schematic configuration diagram showing the operation of the shutter 74a during exhaust operation.

<First embodiment>
(1) Overall configuration The air conditioner 100 according to the first embodiment will be described. FIG. 1 is a schematic configuration diagram showing an air conditioner 100. The air conditioner 100 performs air conditioning in a room ID by exchanging heat between a refrigerant and air and supplying and discharging air. Examples of air conditioning include cooling, freezing, heating, humidification, dehumidification, air purification, air blowing, and ventilation. In this embodiment, the air conditioning performed by the air conditioner 100 includes cooling, heating, humidification, and ventilation.

The air conditioner 100 includes an indoor unit 110 and an outdoor unit 120. Indoor unit 110 and outdoor unit 120 are electrically connected.

(1-1) Indoor unit The indoor unit 110 is installed in the indoor ID. The indoor unit 110 includes an indoor suction port IP1, an indoor air outlet IP2, an indoor heat exchanger (not shown), and an indoor fan (not shown).

The indoor suction port IP1 is an opening for sucking the air of the indoor ID into the indoor unit 110. The indoor air outlet IP2 is an opening for blowing out the air inside the indoor unit 110 to the indoor ID.

The indoor heat exchanger exchanges heat between the refrigerant and air. The indoor heat exchanger constitutes a refrigeration cycle together with an outdoor heat exchanger and the like, which will be described later. Indoor heat exchangers operate as evaporators or condensers.

The indoor fan is rotated to generate suction power. Due to the suction force of the indoor fan, the air in the indoor ID is sucked in through the indoor suction port IP1 and blown out from the indoor air outlet IP2.

(1-2) Outdoor unit The outdoor unit 120 is installed in the outdoor OD. The outdoor unit 120 includes a heat exchange unit 121 and a ventilation unit 130.

(1-2-1) Heat Exchange Unit The heat exchange unit 121 includes an outdoor heat exchanger (not shown) that exchanges heat between refrigerant and air. The outdoor heat exchanger constitutes a refrigeration cycle with the indoor heat exchanger and the like. Outdoor heat exchangers operate as evaporators or condensers.

(1-2-2) Ventilation Unit The ventilation unit 130 supplies air from the outdoor OD to the indoor ID, discharges air from the indoor ID to the outdoor OD, and performs air conditioning for the indoor ID. The ventilation unit 130 includes a unit body 131 and a ventilation hose 132.

The unit main body 131 is provided with a suction port SP, a blowout port BP, and an exhaust port EP. The detailed configuration of the unit main body 131 will be described later.

The ventilation hose 132 forms an air path between the indoor unit 110 and the outdoor unit 120.

(2) Detailed configuration The detailed configuration of the unit main body 131 will be explained. FIG. 2 is a sectional view showing the unit main body 131. FIG. 3 is a top view showing the unit main body 131. The unit body 131 includes a casing 310, a humidifier 320, a fan unit 330, a damper unit 340, a shutter 350, a control device 360, and the like.

(2-1) Casing The casing 310 is a housing that houses the humidifier 320, the fan unit 330, the damper unit 340, the shutter 350, the control device 360, and the like. Fan unit 330 is an example of a blower fan. Damper unit 340 is an example of a switching mechanism. Note that the casing 310 does not need to house the control device 360.

The casing 310 is placed on the top side of the heat exchange unit 121 and has a rectangular box shape. A humidifier 320, a fan unit 330, a damper unit 340, a shutter 350, a control device 360, and the like are arranged in an internal space 604 formed by the casing 310. The casing 310 is provided with a suction port SP, a blowout port BP, and an exhaust port EP.

(2-1-1) Suction port, blowout port, and exhaust port The blowout port BP is an opening for blowing air from the unit main body 131 to the ventilation hose 132. Further, the air outlet BP is an opening for sucking air into the unit main body 131 from the ventilation hose 132. The air outlet BP is provided on the bottom wall surface 601 of the casing 310. The air outlet BP is provided near one side of the casing 310.

The suction port SP is an opening for sucking air into the unit main body 131 from the outdoor OD. The suction port SP is provided on the side wall surface 603 of the casing 310. The suction port SP is provided near one side of the casing 310. The suction port SP is provided at an appropriate distance from the blowout port BP.

The exhaust port EP is an opening for discharging air from the unit main body 131 to the outdoor OD. The exhaust port EP is provided on the side wall surface 603 of the casing 310.

(2-1-2) Ventilation Path The ventilation path VP is a path from the suction port SP to the air outlet BP via the fan unit 330. The side of the suction port SP in the ventilation path VP is referred to as the upstream side US. The side of the air outlet BP in the ventilation path VP is referred to as the downstream side DS.

(2-1-3) Socket The socket 602 is a member that is inserted into the air outlet BP. The socket 602 has a hollow cylindrical shape. Socket 602 connects to one end of ventilation hose 132. The socket 602 extends downward through the air outlet BP.

(2-2) Humidifier The humidifier 320 humidifies the air by adsorbing moisture to the air. The humidifier 320 is provided in the ventilation path VP. In this embodiment, the humidifier 320 is provided near the suction port SP. In other words, the humidifier 320 is provided between the suction port SP and the fan unit 330.

FIG. 4 is a schematic configuration diagram showing the humidifying device 320. The humidifier 320 includes an adsorption member and a heater 322. In this embodiment, the adsorption member is a humidifying rotor 321. Note that the humidifying device 320 may include at least one of a humidifying tray, a humidifying tank, and a humidifying motor.

(2-2-1) Rotor The rotor 321 is composed of a humidifying element (not shown). Examples of humidifying elements include nonwoven fabrics, woven fabrics, and the like. The humidifying element can pass the air in the ventilation path VP while adsorbing moisture.

(2-2-2) Heater The heater 322 heats the air introduced into the rotor 321. The heater 322 is provided on the upstream side US with respect to the rotor 321. The heater 322 is configured to allow air in the ventilation path VP to pass therethrough. The heater 322 may include a plurality of heaters smaller than the heater 322.

(2-3) Fan Unit The fan unit 330 generates suction force SF by rotationally driving a fan impeller 407, which will be described later. The fan unit 330 includes a fan housing 405, a bell mouth plate 406, a fan impeller 407, a fan motor 408, and the like.

(2-3-1) Fan Housing The fan housing 405 is composed of a bottom plate 403 and a side plate 404. The bottom plate 403 has a scroll-like planar shape. The side plate 404 surrounds the outer periphery of the bottom plate 403.

(2-3-2) Bellmouth Plate The bellmouth plate 406 is fixedly arranged on the open end side of the fan housing 405 so as to close the fan housing 405. The bellmouth plate 406 has a rectangular flat plate shape. The bell mouth plate 406 has a fan inlet 401 and a fan outlet 402 spaced apart from each other as appropriate.

(2-3-2-1) Fan Inlet, Fan Outlet The fan inlet 401 is an opening for sucking air into the fan unit 330 from outside the fan unit 330.

The fan outlet 402 is an opening for blowing air from inside the fan unit 330 to the outside of the fan unit 330. The fan outlet 402 is provided coaxially with the outlet BP.

(2-3-3) Fan Impeller The fan impeller 407 is arranged in a space surrounded by the bell mouth plate 406 and the fan housing 405. Fan impeller 407 is arranged to face fan suction port 401 .

The fan impeller 407 is rotationally driven by a fan motor 408, which will be described later, to generate suction force SF. When the fan unit 330 operates, the direction of rotation of the fan impeller 407 is the same regardless of the type of operation. Therefore, when the fan unit 330 operates, the direction of the suction force SF generated by the fan impeller 407 is also the same regardless of the type of operation.

(2-3-4) Fan Motor The fan motor 408 is fixed to the outer surface of the fan housing 405. Fan electric motor 408 rotates fan impeller 407 .

(2-4) Damper Unit The damper unit 340 switches between an air supply path SU, which will be described later, and an exhaust path EX, which will be described later. The damper unit 340 includes a damper enclosing body 341 and a damper main body 342.

(2-4-1) Damper Encasing Body The damper enclosing body 341 is formed by bending a plate material into a substantially “U” shape. The damper enclosing body 341 includes a bottom wall 501, side walls 502, and the like. The bottom wall 501 has substantially the same dimensions and shape as the bell mouth plate 406. The side walls 502 are a pair of walls rising from both left and right edges of the bottom wall 501 and having the same height.

The damper enclosing body 341 is integrated by abutting and fixing the side wall 502 to the lower surface of the bell mouth plate 406 on the damper unit 340 side. Therefore, the bellmouth plate 406 and the damper enclosing body 341 form a penetration area 505 having a rectangular cross-section. The upstream end 503 and downstream end 504, which are both ends of the penetration area 505, are openings. Therefore, the penetration area 505 is tunnel-shaped. Within the penetration region 505, a damper main body 342, which will be described later, is arranged so as to be movable in the axial direction (penetration direction) of the penetration region 505.

The damper enclosing body 341 is provided with an air supply/exhaust port 515 at a position corresponding to one end of the penetration area 505. The supply/exhaust port 515 has approximately the same diameter as the fan outlet 402 on the fan unit 330 side. A socket 602 extending downward from the bottom wall 501 is integral with the bottom wall 501 .

The damper enclosing body 341 is attached to the casing 310 side by abutting and fixing the bottom wall 501 to the bottom wall surface 601 of the casing 310. Therefore, when the damper enclosure 341 is attached to the casing 310 side, the supply/exhaust port 515 on the damper enclosure 341 side and the fan outlet 402 on the bell mouth plate 406 side are arranged to substantially overlap in the vertical direction. Ru.

(2-4-2) Damper Body The damper body 342 includes a base portion 506, an extension portion 507, a bottom wall 508, a side wall 509, a curved wall 510, and the like. The base 506 has a rectangular box shape with an open top. The extending portion 507 continues from one corner of the base portion 506 and extends laterally. The bottom wall 508 extends from the base 506 to the extension 507 . The side wall 509 is erected around the base 506 so as to surround the base 506 . The curved wall 510 covers the periphery of the extension portion 507 in a spherical shape.

A first opening 511 is provided in the bottom wall 508 at a position corresponding to one side of the base 506. A second opening 512 is provided in the bottom wall 508 at a position corresponding to the extension portion 507 . A cylindrical member 513 having a circular cross section and extending upward from the first opening 511 is formed integrally with the damper main body 342 .

The height of the cylindrical member 513 is set such that the upper end of the cylindrical member 513 is located at approximately the same height as the upper end of the side wall 509. The height dimensions of the cylindrical member 513 and the side wall 509 are set corresponding to the height dimension of the penetration area 505 of the damper enclosing body 341. The damper body 342 is slidably fitted within the penetration area 505.

A portion of the space surrounded by the side wall 509 of the damper body 342 excluding the cylindrical member 513 (the outer portion of the cylindrical member 513) is referred to as a damper inner space 514.

The sliding direction of the damper body 342 within the penetration area 505 is the axial direction of the penetration area 505 (arrow a direction, arrow b direction). The relative positions of the first opening 511 and the second opening 512 in the planar direction are such that the first opening 511 and the second opening 512 can selectively communicate with the air supply/exhaust port 515 as the damper body 342 slides. is set to

When the first opening 511 communicates with the air supply/exhaust port 515, since the fan suction port 401 is located outside the damper body 342, the communication between the fan suction port 401 and the damper body 342 is cut off. On the other hand, when the second opening 512 communicates with the supply/exhaust port 515, the fan suction port 401 is located within the damper internal space 514, so the fan suction port 401 and the damper main body 342 communicate with each other.

(2-5) Shutter The shutter 350 closes the exhaust port EP during an air supply operation, which will be described later, and opens the exhaust port EP during an exhaust operation, which will be described later. The first side surface 351 of the shutter 350 is fixed to the side wall surface 603. The shutter 350 is rotatable and moves in the direction of arrow c and the direction of arrow d.

When the shutter 350 moves in the direction of arrow c, the second side surface 352 of the shutter 350 comes into contact with the bottom plate 403. Therefore, when the shutter 350 moves in the direction of arrow c, the shutter 350 opens the exhaust port EP. Further, when the shutter 350 moves in the direction of the arrow c, the shutter 350 blocks the air path in the direction of the arrow e. On the other hand, when the shutter 350 moves in the direction of the arrow d, the second side surface 352 comes into contact with the side wall surface 603. Therefore, when the shutter 350 moves in the direction of the arrow d, the shutter 350 closes the exhaust port EP.

(2-6) Control device The control device 360 performs air supply operation, exhaust operation, adsorption operation, etc. Details of the air supply operation, exhaust operation, and adsorption operation will be described later. The control device 360 controls the operations of the humidifier 320, the fan unit 330, the damper unit 340, the shutter 350, and the like. Control device 360 is an example of a control section.

The control device 360 is provided within the unit main body 131. A diagram of the unit main body 131 in which the control device 360 is arranged is omitted. FIG. 5 is a control block diagram of the indoor unit 110 and the outdoor unit 120. The control device 360 is electrically connected to the humidifier 320, the fan unit 330, the damper unit 340, and the shutter 350. The heat exchange unit 121 and the unit main body 131 are electrically connected. Indoor unit 110 and outdoor unit 120 are electrically connected.

The control device 360 is realized by a computer. The control device 360 includes a control calculation device and a storage device (both not shown). A processor such as a CPU or a GPU can be used as the control calculation device. The control arithmetic device reads a program stored in the storage device, and performs predetermined image processing and arithmetic processing according to this program. Furthermore, the control calculation device can write calculation results to the storage device and read information stored in the storage device according to the program. The storage device can be used as a database. Specific functions realized by the control device 360 will be described later.

Note that the configuration of the control device 360 described here is only an example, and the functions of the control device 360 described below may be realized by software or hardware, or by a combination of software and hardware. It may be realized by

(3) Operation The operation of the air conditioner 100 will be explained. The air conditioner 100 performs cooling, heating, humidification, ventilation, etc.

Cooling is an operation in which a refrigerant removes heat from indoor air using a refrigerant circuit that uses an indoor heat exchanger as an evaporator and an outdoor heat exchanger as a condenser. An operation in which the refrigerant removes heat from indoor air using a refrigerant circuit in which the indoor heat exchanger serves as an evaporator and the outdoor heat exchanger serves as a condenser is referred to as cooling operation. Cooling is performed by cooling operation.

Heating is an operation in which refrigerant supplies heat to indoor air through a refrigerant circuit that uses an indoor heat exchanger as a condenser and an outdoor heat exchanger as an evaporator. An operation in which the refrigerant supplies heat to indoor air using a refrigerant circuit in which the indoor heat exchanger is the condenser and the outdoor heat exchanger is the evaporator is called heating operation. Heating is performed by heating operation.

Humidification is an operation of driving the fan unit 330 to supply outdoor air with moisture adsorbed to the indoor ID from the ventilation path VP through the ventilation hose 132. An operation in which the fan unit 330 is driven to supply outdoor air to the indoor room ID from the ventilation path VP through the ventilation hose 132 is referred to as an air supply operation. The operation that causes outdoor air to adsorb moisture is called an adsorption operation. Humidification is performed by air supply operation and adsorption operation.

The indoor humidity may be lower than the target humidity. An example of the target humidity is the appropriate humidity for the person or object in the room ID. When the indoor humidity is lower than the target humidity, when outdoor air with moisture adsorbed is supplied to the indoor ID, the indoor humidity increases due to the adsorbed moisture.

Ventilation is performed by driving the fan unit 330 to supply outdoor air from the ventilation path VP to the indoor ID through the ventilation hose 132, and by driving the fan unit 330 in the same rotational direction as the air supply operation to supply the ventilation hose without passing through the rotor 321. This is an operation for discharging indoor air to the outdoor OD through 132. An operation in which the fan unit 330 is driven in the same rotational direction as the air supply operation to exhaust indoor air to the outdoor OD through the ventilation hose 132 without passing through the rotor 321 is referred to as an exhaust operation. Ventilation is performed by air supply operation and exhaust operation. Note that ventilation may be performed not only by air supply operation but also by exhaust operation.

There may be pollutants present in the indoor ID air. Contaminants are substances that are not suitable for persons or objects in the room. Examples of pollutants include substances contained in cigarette smoke, substances contained in cooking smoke, dust, PM2.5, and the like. Examples of substances contained in cigarette smoke include asbestos, acetaldehyde, carbon monoxide, cadmium, tar, dioxins, and nicotine. Examples of substances contained in cooking smoke include nitrogen dioxide, formaldehyde, carbon monoxide, and PM2.5.

If pollutants are present in the indoor ID air, it is necessary to remove the pollutants. When indoor air is discharged to the outdoor OD, pollutants contained in the indoor air are also discharged. Furthermore, when outdoor air is supplied to the indoor ID, the concentration of pollutants contained in the indoor air is diluted. Therefore, if pollutants are present in the air in the room ID, ventilation is performed to expel the pollutants and reduce the concentration of the pollutants.

The air supply operation, adsorption operation, and exhaust operation related to humidification or ventilation will be explained in detail.

(3-1) Air supply operation Air supply operation will be explained in detail. FIG. 6 is a schematic configuration diagram showing the air supply path SU in the air conditioner 100. The air supply route SU is an air route during air supply operation. FIG. 7 is a sectional view showing the air supply path SU in the unit main body 131. FIG. 8 is a top view showing the air supply path SU in the unit main body 131.

The damper main body 342 is moved in the direction of arrow b, and the air supply/exhaust port 515 and the fan air outlet 402 are brought into communication via the cylindrical member 513 (first opening 511). The second opening 512 is closed by the bottom wall 501. Since the shutter 350 is moved in the direction of arrow d, the exhaust port EP is closed.

When the fan impeller 407 is rotationally driven, suction force SF is generated. The air in the outdoor OD is sucked into the internal space 604 from the suction port SP by the suction force SF. Air from the outdoor OD is not sucked in from the exhaust port EP because the shutter 350 closes the exhaust port EP. Therefore, no path for air from the exhaust port EP is formed.

A ventilation path VP is provided from the suction port SP to the air outlet BP via the fan unit 330. Further, a humidifier 320 is provided between the suction port SP and the fan unit 330. Therefore, the outdoor air sucked through the suction port SP passes through the humidifier 320.

The outdoor air that has passed through the humidifier 320 reaches the penetration area 505 along the ventilation path VP. The outdoor air that has reached the penetration area 505 is sucked into the fan unit 330 through the fan suction port 401.

The outdoor air is blown out from the fan outlet 402 toward the cylindrical member 513 with increased static pressure. The outdoor air blown toward the cylindrical member 513 reaches the air supply/exhaust port 515 . The outdoor air that has reached the air supply/exhaust port 515 reaches the inside of the indoor unit 110 through the ventilation hose 132.

The outdoor air that has reached the interior of the indoor unit 110 is supplied to the indoor ID via the indoor air outlet IP2 by the rotation of the indoor fan. By driving the fan unit 330, outdoor air is supplied from the ventilation path VP to the indoor ID through the ventilation hose 132.

(3-2) Adsorption operation Adsorption operation will be explained in detail. FIG. 9 is a schematic configuration diagram showing the air supply path SU in the humidifier 320.

During air supply operation, outdoor air passes through the humidifier 320 along the ventilation path VP. First, the outdoor air reaches the heater 322 provided on the upstream side US of the rotor 321. Outdoor air is heated by the heater 322 while passing through it. The heated outdoor air reaches the rotor 321. Since the outdoor air is heated, the moisture contained in the rotor 321 is adsorbed by the outdoor air. The outdoor air adsorbs moisture contained in the rotor 321 while passing through the rotor 321 . The outdoor air that has absorbed moisture flows to the downstream side DS along the ventilation path VP. Therefore, the outdoor air adsorbs moisture due to the adsorption operation.

(3-3) Exhaust operation The details of exhaust operation will be explained. FIG. 10 is a schematic configuration diagram showing the exhaust path EX in the air conditioner 100. The exhaust route EX is an air route during exhaust operation. FIG. 11 is a sectional view showing the exhaust path EX in the unit main body 131. FIG. 12 is a top view showing the exhaust path EX in the unit main body 131.

The damper main body 342 is moved in the direction of arrow a to communicate the supply/exhaust port 515 and the fan suction port 401 via the damper internal space 514 (via the outer portion of the cylindrical member 513). The cylindrical member 513 is closed by the bottom wall 501. Since the shutter 350 is moved in the direction of arrow c, the exhaust port EP is opened.

When the indoor fan is driven to rotate, indoor air is sucked into the indoor unit 110 from the indoor ID through the indoor suction port IP1. Indoor air within the indoor unit 110 reaches the unit main body 131 via the ventilation hose 132.

When the fan impeller 407 is rotationally driven, suction force SF is generated. The fan impeller 407 rotates in the same rotational direction as during air supply operation. Therefore, the suction force SF generated by the fan impeller 407 also acts in the same direction as during air supply operation. Due to the suction force SF, indoor air is sucked through the damper internal space 514 from the fan suction port 401 side. Indoor air sucked into the fan unit 330 is blown out from the fan outlet 402 to the penetration area 505 side. The indoor air blown toward the penetration area 505 reaches the internal space 604.

The shutter 350 opens the exhaust port EP and closes the path to the suction port SP. Therefore, the indoor air that has reached the internal space 604 is discharged to the outdoor OD via the exhaust port EP. Due to the shutter 350, no air path to the suction port SP is formed. Therefore, the indoor air is discharged to the outdoor OD without passing through the humidifier 320.

(3-4) Others The air conditioner 100 may perform dehumidification. Dehumidification is performed by air supply operation. Adsorption operation is not performed during dehumidification.

Since the air supply operation is performed, outdoor air passes through the humidifier 320 and is supplied to the indoor ID. When passing through the humidifier 320, no adsorption operation is performed. Since the adsorption operation is not performed, the outdoor air that has reached the heater 322 is not heated. The unheated outdoor air is stripped of moisture by the rotor 321. The outdoor air from which moisture has been removed is supplied to the indoor ID. Therefore, the humidity in the room ID decreases. Dehumidification is also called "dehumidified air supply" because it operates by supplying dehumidified air.

(4) Features (4-1)
The ventilation unit 130 includes a blower fan, a ventilation hose 132, an inlet SP, an outlet BP, an adsorption member, and a control section. The adsorption member is provided in the ventilation path VP from the suction port SP to the air outlet BP via the ventilation fan. The control unit performs air supply operation and exhaust operation. The air supply operation is an operation in which the ventilation fan is driven to supply outdoor air from the ventilation path VP to the indoor ID through the ventilation hose 132. The exhaust operation is an operation in which the blower fan is driven in the same rotational direction as the air supply operation, and indoor air is exhausted to the outdoor OD through the ventilation hose 132 without passing through the adsorption member.

The ventilation unit 130 performs an air supply operation in which air is supplied from a ventilation path VP in which an adsorption member is provided, and an exhaust operation in which a blower fan is driven in the same rotational direction as the air supply operation to exhaust air without passing through the adsorption member. conduct. Therefore, the ventilation unit 130 can supply outdoor air through the adsorption member to the indoor ID, and can prevent pollutants from adsorbing to the adsorption member during exhaust operation.

(4-2)
In the ventilation unit 130, an adsorption member is provided between the suction port SP and the ventilation fan in the ventilation path VP.

The ventilation unit 130 performs air supply operation and exhaust operation using the suction force SF of the ventilation fan. When a suction member is provided between the blower fan and the air outlet during exhaust operation, it is necessary to provide a path that can utilize the suction force and does not pass the suction member. Therefore, the exhaust route EX of the ventilation unit becomes complicated, making it difficult to switch between air supply operation and exhaust operation.

In the ventilation unit 130, an adsorption member is provided between the suction port SP and the ventilation fan in the ventilation path VP. Therefore, the ventilation unit 130 can easily switch between supplying air through the suction member and exhaust operation without passing the suction member.

(4-3)
Ventilation unit 130 further includes a switching mechanism. The switching mechanism switches between an air supply path SU, which is an air path during air supply operation, and an exhaust path EX, which is an air path during exhaust operation.

The ventilation unit 130 can more easily switch between the air supply operation and the exhaust operation using a switching mechanism that switches between the air supply route SU and the exhaust route EX.

(4-4)
The ventilation unit 130 further includes an exhaust port EP. The exhaust port EP exhausts indoor air to the outside during exhaust operation. Further, the switching mechanism switches the exhaust route EX so that the air passing through the ventilation hose 132 is a route from the outlet BP to the exhaust outlet EP via the blower fan.

The ventilation unit 130 includes an exhaust port EP that discharges indoor air to the outside during an exhaust operation, in addition to a suction port SP that sucks in outdoor air during an air supply operation. Therefore, the ventilation unit 130 can more easily switch between air supply operation and exhaust operation using the exhaust port EP.

(4-5)
Ventilation unit 130 further includes a shutter 350. The shutter 350 closes the exhaust port EP during air supply operation and opens the exhaust port EP during exhaust operation.

The shutter 350 closes the exhaust port EP during air supply operation. During the air supply operation, the air path from the exhaust port EP is not formed, so the air path does not become complicated. The ventilation unit 130 can simplify the air path during the air supply operation while performing the exhaust operation using the exhaust port EP. Therefore, the ventilation unit 130 can more easily switch between air supply operation and exhaust operation.

(5) Modification The air conditioner 100 may further perform air cleaning. In addition to the rotor 321, the adsorption member further includes at least one of a pre-filter, a dust collection filter, and a deodorizing filter.

Additionally, the air conditioner 100 may perform air purification instead of humidification. The adsorption member is at least one of a prefilter, a dust collection filter, and a deodorizing filter. Humidification device 320 may be referred to as an "adsorption device." The adsorption device does not include a heater 322.

A pre-filter is a filter that adsorbs relatively large dust particles from outdoor air. An example of the structure of a pre-filter is a structure in which a net-like sheet is sandwiched between resin frames on both sides. A dust filter is a filter that adsorbs relatively small dust particles from outdoor air. A deodorizing filter is a filter that adsorbs odor components from outdoor air.

(5-1) Features In the ventilation unit 130, the adsorption member is at least one of a humidifying rotor 321, a pre-filter, a dust collection filter, and a deodorizing filter.

When the adsorption member is the humidification rotor 321, the ventilation unit 130 can perform humidification that supplies moisture to the air. Further, the ventilation unit 130 can clean the air when the adsorption members are a pre-filter, a dust collection filter, and a deodorizing filter.

<Second embodiment>
(1) Overall Configuration The air conditioner 101 according to the second embodiment will be described with a focus on differences from the air conditioner 100 according to the first embodiment. In addition to the operations of air conditioner 100, air conditioner 101 also performs regeneration. Details of playback will be described later.

(2) Detailed Configuration The unit body 141 of the ventilation unit 140 includes a damper unit 370 having a different structure from the damper unit 340 of the unit body 131. FIG. 13 is a schematic configuration diagram showing the regeneration path RP in the air conditioner 100. The regeneration route RP is an air route during regeneration operation. FIG. 14 is a sectional view showing the regeneration path RP in the unit main body 141. FIG. 15 is a top view showing the regeneration path RP in the unit main body 141.

(2-1) Damper unit The damper unit 370 of the unit main body 141 includes a pivotable side wall 519 instead of the fixed side wall 509 of the damper unit 340. The side wall 519 is moved in the direction of arrow f and the direction of arrow g.

The side wall 519 is moved in the direction of arrow g during regeneration operation. The side wall 519 moved in the direction of arrow g opens the path between the penetration area 505 and the damper internal space 514. During regeneration operation, the penetration area 505 and the damper internal space 514 form a regeneration path RP. Therefore, in the damper unit 370, the side wall 519 switches the regeneration path RP so that the air sucked from the suction port SP becomes a path through the fan unit 330 to the exhaust port EP.

On the other hand, the side wall 519 is moved in the direction of arrow f during operations other than regeneration operation. The side wall 519 moved in the direction of the arrow f blocks the path between the penetration area 505 and the damper internal space 514.

(2-2) Shutter In addition to the operation of the shutter 350, the shutter 353 opens the exhaust port EP during regeneration operation.

(3) Operation The operation of the air conditioner 101 will be explained. The air conditioner 101 performs regeneration in addition to cooling, heating, humidification, and ventilation.

Regeneration is an operation of sucking in outdoor air, passing the outdoor air heated by the heater 76 through the rotor 58, and exhausting it again to the outdoor OD through the exhaust port 52e. The operation of sucking in outdoor air, passing the outdoor air heated by the heater 76 through the rotor 58, and discharging it to the outdoor OD again through the exhaust port 52e is referred to as a regeneration operation. Regeneration is performed by regeneration operation and adsorption operation.

(3-1) Regeneration operation The details of regeneration operation will be explained. The damper main body 342 is moved in the direction of arrow a, and the supply/exhaust port 515 and the fan suction port 401 are communicated with each other via the damper internal space 514 (via the outer portion of the cylindrical member 513). The cylindrical member 513 is closed by the bottom wall 501. Since the shutter 350 is moved in the direction of arrow c, the exhaust port EP is opened. The side wall 519 is moved in the direction of arrow g, and the path between the penetration area 505 and the damper internal space 514 is opened.

The fan impeller 407 is driven in the same rotational direction as during air supply operation. Therefore, the fan impeller 407 generates the suction force SF in the same direction as during the air supply operation. The air in the outdoor OD is sucked into the internal space 604 from the suction port SP by the suction force SF.

A ventilation path VP is provided from the suction port SP to the air outlet BP via the fan unit 330. Further, a humidifier 320 is provided between the suction port SP and the fan unit 330. Therefore, the outdoor air sucked through the suction port SP passes through the humidifier 320.

The outdoor air that has passed through the humidifier 320 reaches the penetration area 505 along the ventilation path VP. Since the penetration area 505 and the damper inner space 514 are communicated with each other, outdoor air flows into the damper inner space 514. Outdoor air is sucked into the fan unit 330 through the fan suction port 401.

The indoor air sucked into the fan unit 330 is blown out from the fan outlet 402 to the penetration area 505 side again. The indoor air blown toward the penetration area 505 reaches the internal space 604.

The shutter 350 opens the exhaust port EP and closes the path to the suction port SP. Therefore, the indoor air that has reached the internal space 604 is discharged to the outdoor OD via the exhaust port EP. The shutter 350 does not form a path for air to the suction port SP. Therefore, the indoor air is discharged to the outdoor OD without passing through the humidifier 320.

(4) Features (4-1)
Ventilation unit 140 further includes a heater 322. The adsorption member is a rotor 321 for humidification. The heater 322 heats the air introduced into the rotor 321. The control unit further performs a regeneration operation in which outdoor air is sucked in, the outdoor air heated by the heater 322 is passed through the rotor 321, and is discharged to the outdoor OD again through the exhaust port EP.

The ventilation unit 140 can perform humidification that supplies moisture to the air using an adsorption member that is a humidification rotor 321. Further, the ventilation unit 140 performs a regeneration operation in which the heated air removes moisture from the rotor 321. Therefore, the ventilation unit 140 can regenerate the moisture adsorption capacity of the rotor 321. Further, in the ventilation unit 140, the exhaust port EP used during the regeneration operation is the same as the exhaust port EP used during the exhaust operation. The ventilation unit 140 does not need to further provide an exhaust port for regeneration operation, and can perform regeneration operation using the existing structure. Therefore, the structure of the ventilation unit 140 can be simplified.

(4-2)
In the ventilation unit 140, the switching mechanism switches the regeneration path RP, which is the air path during the regeneration operation, so that the air sucked from the suction port SP passes through the ventilation fan to the exhaust port EP.

Therefore, the ventilation unit 140 can more easily switch between other operations and regeneration operation using the switching mechanism.

<Third embodiment>
(1) Overall Configuration The air conditioner 102 according to the third embodiment will be described with a focus on differences from the air conditioner 101 according to the second embodiment. The ventilation unit 150 of the air conditioner 102 has a different structure from the ventilation unit 140 of the air conditioner 101.

FIG. 16 is a schematic configuration diagram showing the air conditioner 102. The ventilation unit 150 includes a unit body 50 and a ventilation hose 56.

(2) Detailed configuration The detailed configuration of the unit main body 50 will be explained. FIG. 17 is a perspective view showing the internal structure of the unit main body 50. FIG. 18 is a perspective view of the unit main body 50 with some of its components removed. FIG. 19 is a top view of the unit main body 50 with some of its components removed. FIG. 20 is an exploded perspective view of the unit main body 50. FIG. 21 is an exploded perspective view of some components of the unit main body 50. FIG. 22 is a schematic cross-sectional view of the unit main body 50.

(2-1) Casing The casing 52 is provided with a suction port 52a, a suction port 52b, a first separate port 52c, an air outlet 52d, an exhaust port 52e, and a second separate port 52f. The first separate port 52c is an opening for sucking outdoor air Aout from the outdoor OD into the unit main body 50. A ventilation hose 56 is connected to the air outlet 52d. The second separate port 52f is an opening for discharging air from the unit main body 50 to the outdoor OD.

The casing 52 includes a seal portion 52j on the bottom plate portion 52g of the casing 52. The seal portion 52j blocks the passage of outdoor air Aout between a lower space S2, which will be described later, and a lower space S4, which will be described later.

(2-2) Humidifier The humidifier 57 includes a rotor 58, a holder 60, a motor 64, a first heater 76A, a second heater 76B, a tray 82, and the like.

(2-2-1) Rotor, Holder, Motor A rotor 58 is provided at the center within the casing 52. In addition to the rotor 58, at least one of a pre-filter, a dust collection filter, and a deodorizing filter may be provided.

The rotor 58 is a disk-shaped member through which air can pass in the vertical direction (Z-axis direction) and rotates around a rotation center line C1 extending in the vertical direction. The rotor 58 is held by a cylindrical holder 60. The rotor 58 is rotated by a humidifying motor 64. The motor 64 includes a gear 62 that engages with external teeth of the holder 60. The rotor 58 continues to rotate at a predetermined rotational speed while the unit body 50 is in operation.

(2-2-2) Heater The humidifier 57 includes a first heater 76A and a second heater 76B. The first heater 76A is provided for the flow path R1 starting from the suction port 52a. The second heater 76B is provided for the flow path R2 starting from the suction port 52b.

The first heater 76A and the second heater 76B are arranged near the rotor 58. The first heater 76A and the second heater 76B are arranged upstream of the rotor 58 in the flow path R1 and the flow path R2. The first heater 76A and the second heater 76B are provided on the partition plate 78.

A portion of the upper surface 58a of the rotor 58 through which the first heater 76A, the second heater 76B, the flow path R1, and the flow path R2 pass is covered by a heater cover 80. Therefore, the outdoor air Aout heated by the first heater 76A and the second heater 76B can pass through the rotor 58.

The first heater 76A and the second heater 76B may be heaters with the same heating capacity, or may be heaters with different heating capacities.

(2-2-3) Tray The tray 82 is provided in a portion of the partition plate 78 near the first heater 76A and the second heater 76B. The tray 82 receives and collects dust and the like separated from the outdoor air Aout.

(2-3) Fan unit The fan unit 65 includes a fan impeller 66, a partition plate 68, a fan housing 70, a fan motor 72, and the like.

(2-3-1) Fan Impeller The fan impeller 66 is arranged on one side of the unit main body 50 in the longitudinal direction (Y-axis direction) with respect to the rotor 58. An example of the fan impeller 66 is a sirocco fan. The fan impeller 66 is housed in a cylindrical portion 68a provided in a partition plate 68 that vertically divides a space on one side of the rotor 58 in the longitudinal direction.

(2-3-2) Partition Plate The partition plate 68 forms an upper space S1 in which a portion of the upper surface 58a of the rotor 58 is in contact, and a lower space S2 in which a portion of the lower surface 58b of the rotor 58 is in contact. The cylindrical portion 68a of the partition plate 68 is formed with an opening 68b connected to the air outlet 52d and an opening 68c connected to the exhaust port 52e. Furthermore, a through hole 68d is formed in the partition plate 68 for introducing air into the fan impeller 66 within the cylindrical portion 68a. A first switching mechanism SN is provided near the opening 68b of the partition plate 68. The first switching mechanism SN includes a fan-shaped switching member Na. The switching member Na rotates around the rotation axis Nb by a motor (not shown). The first switching mechanism SN can switch between closing and opening the vent SX by rotating the switching member Na around the rotation axis Nb. When the vent SX is opened, the air outlet 52d and the lower space S2 are communicated with each other.

A movable second switching mechanism SM is provided between the partition plate 68 and the bottom plate portion 52g of the casing 52. The second switching mechanism SM blocks the air path between the lower space S2 and the rotor 58 during exhaust operation. The second switching mechanism SM is configured to open the air path between the lower space S2 and the rotor 58 during air supply operation or regeneration operation.

(2-3-3) Fan Housing A fan housing 70 that covers the fan impeller 66 is attached to the cylindrical portion 68a of the partition plate 68.

(2-3-4) Fan Motor The fan housing 70 is provided with a fan motor 72 that rotates the fan impeller 66.

(2-4) Damper unit The damper unit 74 switches the air path. The damper unit 74 includes a rotatable shutter 74a.

(2-4-1) Shutter The shutter 74a can rotate to open and close the opening 68b of the partition plate 68 and the path inside the cylindrical portion 68a (near the fan impeller 66). The opening 68b is connected to the air outlet 52d. Therefore, the shutter 74a can rotate to open and close the air outlet 52d and the inner path of the cylindrical portion 68a.

The shutter 74a can rotate to open and close the opening 68c of the partition plate 68. The opening 68c is connected to the exhaust port 52e. Therefore, the shutter 74a can rotate to open and close the exhaust port 52e.

(2-5) Control device The control device (not shown) performs replenishment operation in addition to air supply operation, exhaust operation, and regeneration operation. Details of the replenishment operation will be described later.

(2-6) Replenishment Fan The replenishment fan 84 is a fan for performing replenishment operation, which will be described later. The replenishment fan 84 is rotationally driven to generate suction force. The replenishment fan 84 generates a flow of outdoor air Aout in a flow path R3, which will be described later. The supplementary fan 84 is arranged on the other side of the unit body 50 in the longitudinal direction (Y-axis direction) with respect to the rotor 58 . An example of the supplementary fan 84 is a sirocco fan.

(2-6-1) Motor, cylindrical part The supplementary fan 84 is rotated by a motor 86 attached to the outer surface of the bottom plate part 52g of the casing 52. The supplementary fan 84 is housed in a cylindrical portion 52h provided on the inner surface of the bottom plate portion 52g. The internal space of the cylindrical portion 52h communicates with the second separate port 52f.

(2-6-2) Partition plate, sealing member A partition plate 78 that covers the supplementary fan 84 is attached on the cylindrical portion 52h. The partition plate 78 divides the space on one side of the rotor 58 in the longitudinal direction (Y-axis direction) into two parts, upper and lower.

The partition plate 78 is provided with a through hole 78a for taking outdoor air Aout into the supplementary fan 84. The partition plate 78 is provided with a rotor accommodating portion 78b that rotatably accommodates the rotor 58 without covering the upper surface 58a. The partition plate 78 includes a seal portion 78c. The seal portion 78c blocks the outdoor air Aout from flowing between the upper space S1 and the upper space S3 above the rotor 58.

A sealing member 88 that seals between the partition plate 78 and the top plate 54 is provided between the partition plate 78 and the top plate 54. Due to the sealing member 88, the outdoor air Aout flowing through the flow paths R1 and R2 and the outdoor air Aout flowing through the flow path R3 can pass through the rotor 58 at different positions and are not mixed with each other.

(3) Operation The operation of the air conditioner 102 will be explained. The air conditioner 102 performs dehumidification and replenishment in addition to cooling, heating, humidification, ventilation, and regeneration.

Replenishment is an operation for replenishing the rotor 58 with water. Replenishment is an operation of sucking in outdoor air Aout through the first separate port 52c, passing it through the rotor 58, and discharging it to the outdoor OD again through the second separate port 52f. An operation in which outdoor air Aout is sucked in through the first separate port 52c, passes through the rotor 58, and is discharged to the outdoor OD again through the second separate port 52f is referred to as a replenishment operation. Replenishment is performed by replenishment operation.

Humidification of the air conditioner 102 may be performed by replenishment operation in addition to air supply operation and adsorption operation. When humidification is performed by replenishment operation, continuous humidification is possible because the rotor 58 is replenished with moisture.

Similar to the air conditioner 100, the dehumidification of the air conditioner 102 is performed not by adsorption operation but by air supply operation.

(3-1) Air supply operation When the fan electric motor 72 rotates the fan impeller 66, outdoor air Aout is sucked into the casing 52 through the suction port 52a and the suction port 52b of the casing 52. A fan housing 70 and a fan motor 72 are present between the suction port 52a and the suction port 52b. Therefore, there are essentially two flow paths through which the outdoor air Aout passes through the rotor 58 and connects the outdoor OD and the indoor unit 110. The two flow paths R1 and R2 include a merging path where they merge with each other after the rotor 58 passes, and a fan impeller 66 is provided in the merging path.

The outdoor air Aout sucked in through the suction ports 52a and 52b flows into the upper space S1 above the partition plate 68, and flows toward the first heater 76A and the second heater 76B. The first heater 76A and the second heater 76B are covered by a heater cover 80. Therefore, the outdoor air Aout flowing through the flow path R1 and the flow path R2 descends along the outer surface of the side wall portion 80a in order to enter the first heater 76A and the second heater 76B. Outdoor air Aout enters the gap and moves upward. The outdoor air Aout moves through the first heater 76A and the second heater 76B.

The outdoor air Aout descends toward the upper surface 58a. The two flow paths R1 and R2 include a labyrinth through which the outdoor air Aout passes. By including the labyrinth through which the outdoor air Aout passes, the flow path R1 and the flow path R2 can prevent dust, sand, etc. contained in the outdoor air Aout from reaching the ventilation hose 56, the indoor unit 110, and the indoor ID. When the outdoor air Aout moves through the labyrinth, dust, sand, etc. are separated from the outdoor air Aout by gravity.

Outdoor air Aout passes through the rotor 58 from the upper surface 58a toward the lower surface 58b. In other words, the outdoor air Aout passes through the humidifier 57. The outdoor air Aout that has passed through the rotor 58 moves in the lower space S2 below the partition plate 68, passes through the through hole 68d of the partition plate 68, and is taken into the fan impeller 66.

The outdoor air Aout taken into the fan impeller 66 passes through the opening 68b and the opening 68c that is not closed by the shutter 74a. FIG. 23 is a schematic configuration diagram showing the operation of the shutter 74a during air supply operation. The outdoor air Aout passes through the opening 68b and the air outlet 52d, and reaches the indoor unit 110 via the ventilation hose 56. The outdoor air Aout that has reached the indoor unit 110 is supplied to the indoor ID via the indoor air outlet IP2.

(3-2) Regeneration operation The flow path of the outdoor air Aout from the outdoor OD until it is taken into the fan impeller 66 is the same as the flow path R1 and flow path R2 of the outdoor air Aout in the air supply operation. The outdoor air Aout taken into the fan impeller 66 passes through the opening 68b and the opening 68c that is not closed by the shutter 74a. FIG. 24 is a schematic configuration diagram showing the operation of the shutter 74a during regeneration operation. The outdoor air Aout passes through the opening 68c and the exhaust port 52e, and is discharged to the outdoor OD again.

(3-3) Replenishment Operation A flow path R3 other than flow path R1 and flow path R2 is generated as a flow path for outdoor air Aout. The flow path R3 of the outdoor air Aout is different from the flow path R1 and the flow path R2, and is not connected to the inside of the indoor unit 110. The flow path R3 is a flow path through which the outdoor air Aout passes through the rotor 58 and flows from the outdoor OD to the outdoor OD. The flow path R3 starts from the first separate port 52c, passes through the rotor 58 from the lower surface 58b toward the upper surface 58a, and reaches the second separate port 52f.

When the motor 86 rotates the supplementary fan 84, outdoor air Aout flows into the casing 52 through the first separate port 52c. The outdoor air Aout that has flowed in through the first separate port 52c flows into the lower space S4 below the partition plate 78, and flows toward the lower side of the rotor 58. Outdoor air Aout passes through the rotor 58 from the lower surface 58b of the rotor 58 toward the upper surface 58a.

The outdoor air Aout that has passed through the rotor 58 moves in the upper space S3 above the partition plate 78, passes through the through hole 78a, and is taken into the supplementary fan 84. The outdoor air Aout taken into the supplementary fan 84 is discharged to the outdoor OD via the second separate port 52f.

The unheated outdoor air Aout is dehydrated by the rotor 58. In other words, the rotor 58 replenishes moisture with the outdoor air Aout.

(3-4) Adsorption operation The adsorption operation is performed with at least one of the first heater 76A and the second heater 76B operating. When increasing the humidity in the room ID by a small amount, at least one of the first heater 76A and the second heater 76B is operated. On the other hand, when the humidity in the room ID is significantly increased, both the first heater 76A and the second heater 76B are operated.

By using a plurality of heaters, the amount of moisture in the outdoor air Aout (the amount of moisture removed from the rotor 58) can be adjusted more finely than when using one heating means. Therefore, the amount of humidification for the room ID can be precisely controlled.

(3-5) Exhaust Operation FIG. 25 is a perspective view showing the internal structure of the unit main body 50 during exhaust operation. FIG. 26 is an exploded perspective view of the unit main body 50 during exhaust operation. FIG. 27 is an exploded perspective view of some components of the unit main body 50 during exhaust operation. FIG. 28 is a schematic cross-sectional view of the unit main body 50 during exhaust operation. The flow path generated during exhaust operation is referred to as flow path R4.

Indoor air is drawn into the indoor unit 110. The sucked indoor air passes through the ventilation hose 56 and reaches the outlet 52d. Indoor air flows into the unit main body 50 via the air outlet 52d and the opening 68b due to the suction force of the rotationally driven fan impeller 66. The indoor air that has flowed into the unit main body 50 reaches the top of the partition plate 68.

FIG. 29 is a schematic configuration diagram showing the operation of the shutter 74a during exhaust operation. The path from the air outlet 52d directly to the fan impeller 66 is blocked by the shutter 74a. During exhaust operation, the vent SX is open. Therefore, the indoor air that has reached the top of the partition plate 68 flows into the lower space S2 via the vent SX.

The indoor air flowing into the lower space S2 reaches the vicinity of the fan impeller 66 via the through hole 68d due to the suction force. During exhaust operation, the shutter 74a opens the exhaust port 52e. Therefore, the indoor air that has reached the vicinity of the fan impeller 66 is discharged to the outdoor OD via the opening 68c and the exhaust port 52e.

In the ventilation unit 150, the exhaust port 52e used during the regeneration operation is the same as the exhaust port 52e used during the exhaust operation. The ventilation unit 150 does not need to further provide an exhaust port for regeneration operation, and can perform regeneration operation using the existing structure. Therefore, the ventilation unit 150 can be simplified in structure.

Although the embodiments of the present disclosure have been described above, it will be understood that various changes in form and details can be made without departing from the spirit and scope of the present disclosure as described in the claims.

52a Suction port 52b Suction port 52d Air outlet 52e Exhaust port 56 Ventilation hose 58 Rotor 74a Shutter 121 Heat exchange unit 130 Ventilation unit 132 Ventilation hose 140 Ventilation unit 150 Ventilation unit 321 Rotor 322 Heater 350 Shutter 353 Shutter Aout Outdoor air BP Air outlet E P Exhaust port EX Exhaust route ID Indoor OD Outdoor RP Regeneration route SP Suction port SU Air supply route VP Ventilation route

Japanese Patent Application Publication No. 2004-286432

Claims (8)

1. A ventilation unit (130, 140, 150) comprising a blower fan, a ventilation hose (56, 132), an inlet (52a, 52b, SP), and an outlet (52d, BP),
   an adsorption member provided in a ventilation path (VP) from the suction port to the air outlet via the blower fan;
   Driving the blower fan to supply outdoor air (Aout) from the ventilation path to the room (ID) through the ventilation hose; and driving the blower fan in the same rotational direction as the air supply operation. , a control unit that performs an exhaust operation that discharges indoor air to the outside (OD) through the ventilation hose without passing through the adsorption member;
   Ventilation unit with.
2. The suction member is provided between the suction port and the ventilation fan in the ventilation path.
   A ventilation unit according to claim 1.
3. a switching mechanism that switches between an air supply route (SU) that is an air route during the air supply operation and an exhaust route (EX) that is an air route during the exhaust operation;
   The ventilation unit according to claim 1 or claim 2, further comprising:
4. an exhaust port (52e, EP) for exhausting the indoor air to the outside during the exhaust operation;
   Furthermore,
   The switching mechanism switches the exhaust path so that the air passing through the ventilation hose reaches the exhaust port from the air outlet via the blower fan.
   A ventilation unit according to claim 3.
5. The adsorption member is a humidification rotor (58, 321),
   a heater (322) that heats the air introduced into the rotor;
   Furthermore,
   The control unit further performs a regeneration operation in which outdoor air is sucked in, heated by the heater, passed through the rotor, and then discharged outdoors again through the exhaust port.
   A ventilation unit according to claim 4.
6. The switching mechanism switches the regeneration path (RP), which is the air path during the regeneration operation, so that the air sucked from the suction port passes through the blower fan to the exhaust port.
   A ventilation unit according to claim 5.
7. a shutter (74a, 350, 353) that closes the exhaust port during the air supply operation and opens the exhaust port during the exhaust operation;
   The ventilation unit according to any one of claims 4 to 6, further comprising:
8. The adsorption member is at least one of a humidifying rotor, a pre-filter, a dust collection filter, and a deodorizing filter.
   The ventilation unit according to any one of claims 1 to 4 and claim 7.

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