Ventilation device and air conditioner including the same

Abstract

Disclosed is an air exchange device and an air conditioner including the air exchange device. The air exchange device (30) includes a first flow path (P1) connecting a first inflow outlet (E1) on an outdoor side and a second inflow outlet (E2) on an indoor side; and a fan (34), an absorbent material (33), and a heater (32) each disposed in the first flow path (P1). The fan (34) is capable of changing between a first rotation direction (X1) in which an air flow from the outdoor to the indoor is generated and a second rotation direction (X2) in which an air flow from the indoor to the outdoor is generated. The air exchange device (30) performs a humidification operation and an exhaust air exchange operation among a plurality of operation modes. The humidification operation is an operation in which the heater (32) heats outdoor air, and the heated outdoor air acquires moisture of the absorbent material (33) to go to the indoor. The exhaust air exchange operation is an operation in which indoor air goes to the outdoor. In the humidification operation, the fan (34) rotates in the first rotation direction (X1), and in the exhaust air exchange operation, the fan (34) rotates in the second rotation direction (X2).

Description

Technical Field

[0001] This invention relates to a ventilation device. Background Technology

[0002] Currently, as a ventilation device, there are known air conditioners that can perform humidification operation, supplying humidified air from the outdoor unit to the indoor unit.

[0003] For example, Patent Document 1 discloses an air conditioner with a humidification function that blows humidified air supplied from the outside into the room. The air conditioner described in Patent Document 1 is characterized by having a humidity sensor disposed near the connection of the humidification hose that delivers the humidified air.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Application Publication No. 2001-91000 Summary of the Invention

[0007] However, in the air conditioner described in Patent Document 1, there is still room for improvement in terms of enhancing the ventilation function.

[0008] Therefore, the object of the present invention is to provide a ventilation device that can improve ventilation function and an air conditioner including the ventilation device.

[0009] One aspect of the ventilation device of the present invention includes a first flow path, a fan, an absorbent material, and a heater. The first flow path connects a first inlet / outlet connected to an outdoor side and a second inlet / outlet connected to an indoor side. The fan is disposed in the first flow path and is capable of changing between a first rotation direction that generates an airflow from the outdoor to the indoor side and a second rotation direction that generates an airflow from the indoor to the outdoor side. The absorbent material is disposed in the first flow path closer to the first inlet / outlet side than the fan and is used to absorb moisture from the air. The heater is disposed in the first flow path closer to the first inlet / outlet side than the absorbent material and heats the air flowing towards the absorbent material. One aspect of the ventilation device of the present invention performs a humidification operation and a discharge ventilation operation in multiple operating modes, wherein the humidification operation is an operation in which the heater heats outdoor air and the heated outdoor air absorbs moisture from the absorbent material before flowing into the indoor side, and the discharge ventilation operation is an operation in which indoor air flows outward. In the humidification operation, the fan rotates in the first rotation direction, and in the discharge ventilation operation, the fan rotates in the second rotation direction.

[0010] An air conditioner according to one aspect of the present invention includes an indoor unit, an outdoor unit, and a ventilation device according to one aspect of the present invention, wherein the ventilation device according to one aspect of the present invention is disposed on the outdoor unit.

[0011] The ventilation device and the air conditioner of one aspect of the present invention can improve the ventilation function. Attached Figure Description

[0012] Figure 1 This is a schematic diagram showing the structure of an air conditioner including the ventilation device according to an embodiment of the present invention.

[0013] Figure 2 This is a schematic diagram showing the structure of the ventilation device according to the embodiment.

[0014] Figure 3A This is a top view of the fan (vortex fan) included in the ventilation device of the embodiment.

[0015] Figure 3B yes Figure 3A A cross-sectional view of the fan (vortex fan) along line A-A.

[0016] Figure 4 This is a diagram illustrating the intake and ventilation operation of the ventilation device according to the embodiment.

[0017] Figure 5 This is a diagram illustrating the exhaust ventilation operation of the ventilation device in the embodiment.

[0018] Figure 6 This is a diagram illustrating the humidification operation of the ventilation device in the embodiment.

[0019] Figure 7 This is a diagram illustrating the dehumidification operation of the ventilation device in the embodiment.

[0020] Figure 8 This is a diagram illustrating the regeneration operation of the ventilation device in the embodiment. Detailed Implementation

[0021] (The process of realizing this invention)

[0022] Existing ventilation systems operate by drawing in outdoor air to bring it indoors. Through this intake ventilation process, the system can bring fresh outdoor air into the room.

[0023] However, during intake ventilation operation, it is difficult to effectively exhaust polluted indoor air to the outside. Polluted indoor air includes, for example, air containing particles such as PM2.5 or air with high concentrations of gases such as CO2. Therefore, it is required that the ventilation system perform exhaust ventilation operation to effectively exhaust indoor air to the outside. Furthermore, it is necessary not only to exchange indoor and outdoor air, but also to further improve the ventilation function.

[0024] Therefore, the inventors of this invention discovered a structure for a ventilation device that can change the airflow within the ventilation device and improve the ventilation function.

[0025] Based on these new discoveries, the inventors completed the invention described below.

[0026] The ventilation device of a first aspect of the present invention includes a first flow path, a fan, an absorbent material, and a heater. The first flow path connects a first inlet / outlet connected to an outdoor side and a second inlet / outlet connected to an indoor side. The fan is disposed in the first flow path and is capable of changing between a first rotational direction that generates an airflow from the outdoor to the indoor side and a second rotational direction that generates an airflow from the indoor to the outdoor side. The absorbent material is disposed in the first flow path closer to the first inlet / outlet side than the fan and is used to absorb moisture from the air. The heater is disposed in the first flow path closer to the first inlet / outlet side than the absorbent material and heats the air flowing towards the absorbent material. The ventilation device of one aspect of the present invention performs a humidification operation and a discharge ventilation operation in multiple operating modes, wherein the humidification operation is an operation in which the heater heats outdoor air and the heated outdoor air absorbs moisture from the absorbent material before flowing into the indoor side, and the discharge ventilation operation is an operation in which indoor air flows outward. In the humidification operation, the fan rotates in the first rotational direction, and in the discharge ventilation operation, the fan rotates in the second rotational direction.

[0027] By adopting such a structure, the ventilation device can perform humidification operation, which sends humidified outdoor air into the room, and exhaust ventilation operation, which blows indoor air out to the outside, thus improving the ventilation function.

[0028] In the ventilation device of the second aspect of the present invention, the multiple operating modes also include dehumidification operation, which is an operation in which the heater stops, the outdoor air that has been dried by the absorbent material is brought into the room, and the fan rotates in the first rotation direction during the dehumidification operation.

[0029] By adopting such a structure, the ventilation device can further perform dehumidification operation by sending dry outdoor air into the room, thus improving the ventilation function.

[0030] In the ventilation device of the third embodiment of the present invention, it may further include: a second flow path connected between the fan and the absorbent material in the first flow path; and a first damper disposed at the connection between the first flow path and the second flow path. Furthermore, in the ventilation device of the third embodiment of the present invention, a third inflow outlet connected to the outdoor side may be provided in the second flow path, and the first damper may be able to switch the direction of air flowing in the first and second flow paths.

[0031] By employing such a structure, the ventilation device of the third aspect of the present invention can connect the second inflow outlet and the third inflow outlet without using an absorbent material.

[0032] In the ventilation device of the fourth embodiment of the present invention, the first damper may, during humidification operation, switch the flow direction of outdoor air flowing from the first inlet outlet into the first flow path to a first direction flowing through the first flow path towards the second inlet outlet. Alternatively, in the ventilation device of the fourth embodiment of the present invention, during exhaust ventilation operation, the first damper may, during exhaust ventilation operation, switch the flow direction of indoor air flowing from the second inlet outlet into the first flow path to a second direction flowing through the second flow path towards the third inlet outlet.

[0033] By employing such a structure, the ventilation device of the fourth aspect of the present invention enables indoor air to flow through the second flow path and then be discharged to the outside without flowing through the absorbent material.

[0034] In the fifth embodiment of the ventilation device of the present invention, the multiple operating modes may further include an intake ventilation operation that supplies air from the outside to the inside. Alternatively, in the fifth embodiment of the ventilation device of the present invention, during the intake ventilation operation, the fan rotates in a first rotation direction, and the first damper switches the flow direction of outdoor air flowing from the third inlet outlet into the second flow path to a third direction, flowing through the first flow path and towards the second inlet outlet.

[0035] By employing such a structure, the ventilation device of the fifth aspect of the present invention enables outdoor air to flow through the second flow path and be delivered into the room without passing through the absorbent material.

[0036] The ventilation device of the sixth aspect of the present invention may further include: a remote control for a user to select one or more operating modes from a plurality of operating modes; and a controller for executing one or more operating modes selected by the user via the remote control.

[0037] By adopting such a structure, users can select the operating mode they want to perform in the ventilation system.

[0038] The ventilation device according to the seventh embodiment of the present invention may further include: a third flow path connected between a fan in the first flow path and a second inlet / outlet; and a second damper disposed at the connection between the first flow path and the third flow path. Alternatively, in the ventilation device according to the seventh embodiment of the present invention, a fourth inlet / outlet connected to the outdoor side may be provided in the third flow path, and the second damper may be able to switch the direction of airflow in the first and third flow paths.

[0039] By employing such a structure, the ventilation device of the seventh aspect of the present invention enables outdoor air flowing in the first flow path to be discharged to the outside after passing through the third flow path.

[0040] In the ventilation device of the eighth aspect of the present invention, multiple operating modes may further include regeneration operation in which heated outdoor air is used to dry the absorbent material. Additionally, in the ventilation device of the eighth aspect of the present invention, during regeneration operation, the fan rotates in a first rotation direction, and the second damper switches the flow direction of outdoor air flowing from the first inlet outlet into the first flow path to a fourth direction flowing through the third flow path to the fourth inlet outlet.

[0041] By employing such a structure, the ventilation device of the eighth aspect of the present invention can further perform regeneration operation to regenerate the absorbent material.

[0042] In the ventilation device of the ninth aspect of the present invention, dehumidification operation and regeneration operation may be performed alternately.

[0043] By adopting such a structure, the ventilation device of the ninth aspect of the present invention can perform dehumidification operation intermittently.

[0044] In the ventilation device of the tenth aspect of the present invention, the fan may also be a vortex fan.

[0045] By adopting such a structure, the ventilation device of the tenth aspect of the present invention can achieve pressure increase and improve fan efficiency.

[0046] In the ventilation device of the eleventh aspect of the present invention, the absorbent material may also be a polymer adsorbent material.

[0047] By adopting such a structure, the absorbent material of the ventilation device of the eleventh aspect of the present invention absorbs moisture quickly, can remove the retained moisture at a low heating temperature, and can retain moisture for a long time.

[0048] The air conditioner of the 12th aspect of the present invention includes: an indoor unit, an outdoor unit, and a ventilation device of any one of the 1st to 11th aspects of the present invention, wherein the ventilation device is disposed in the outdoor unit.

[0049] By adopting such a structure, the air conditioner of the 12th embodiment of the present invention can improve the ventilation function.

[0050] The ventilation device of the 13th aspect of the present invention is a ventilation device for an air conditioner including an indoor unit and an outdoor unit, the ventilation device including a flow path and a fan. The flow path connects a first inlet outlet connected to the outdoor side and a second inlet outlet connected to the indoor side. The fan is arranged in the flow path and is capable of changing between a first rotation direction that generates an airflow from the outdoor to the indoor and a second rotation direction that generates an airflow from the indoor to the outdoor.

[0051] By adopting such a structure, the ventilation device of the 13th aspect of the present invention is used in an air conditioner to perform an intake ventilation operation (intake ventilation operation) that introduces outdoor air into the room and an exhaust ventilation operation (exhaust ventilation operation) that blows indoor air out to the outside, thereby improving the ventilation function.

[0052] (Implementation Method)

[0053] As an example of the air conditioner of the present invention, an air conditioner including the ventilation device of the embodiment of the present invention will be described.

[0054] (Overall structure)

[0055] Figure 1 This is a schematic diagram showing the structure of an air conditioner 1 including the ventilation device 30 according to an embodiment of the present invention. Furthermore, as follows... Figure 1 As shown, the vertical direction when the ventilation device 30 is installed is sometimes described as the up-down direction.

[0056] like Figure 1 As shown, the air conditioner 1 of this embodiment includes an indoor unit 10, an outdoor unit 20, and a ventilation device 30. The indoor unit 10 and the outdoor unit 20 are connected via a refrigerant piping 50. The ventilation device 30 is disposed outdoors. The ventilation device 30 may also be disposed on the outdoor unit 20. For example, the ventilation device 30 may be disposed on the upper surface of the outer casing of the outdoor unit 20.

[0057] (Indoor unit)

[0058] The indoor unit 10 includes a first heat exchanger 11, an indoor fan 12, an air outlet 13, and a portion of a refrigerant piping 50. The indoor unit 10 is located inside the room where the air conditioning is applied. The first heat exchanger 11 exchanges heat with the air. The indoor fan 12 blows the air, whose temperature has been regulated by the first heat exchanger 11, into the room through the air outlet 13.

[0059] (Outdoor unit)

[0060] The outdoor unit 20 includes a second heat exchanger 21, an outdoor fan 22, a compressor 23, an expansion valve 24, and a portion of a refrigerant piping 50. The outdoor unit 20 is positioned relative to the indoor unit, in the outdoor area defined by the wall K. The second heat exchanger 21 exchanges heat with the air. The outdoor fan 22 blows the air, whose temperature has been regulated by the second heat exchanger 21, outdoors (outside the outdoor unit 20). The compressor 23 compresses the refrigerant flowing into the refrigerant piping 50, and the expansion valve 24 expands the refrigerant flowing into the refrigerant piping 50. The direction of refrigerant flow can also be changed, for example, using a four-way valve, depending on the operating mode of the air conditioner 1 (cooling operation, heating operation).

[0061] The refrigerant piping 50 has a flow path for the refrigerant to flow within the refrigerant piping 50, thus circulating the refrigerant. The refrigerant piping 50 is configured to connect the first heat exchanger 11, the compressor 23, the second heat exchanger 21, and the expansion valve 24.

[0062] Next, use Figure 2 The constituent elements of the ventilation device 30 are explained. Figure 2 This is a schematic diagram showing the structure of the ventilation device 30.

[0063] (Ventilation device)

[0064] In this embodiment, the ventilation device 30 includes a housing 31, a first flow path P1, a second flow path P2, a third flow path P3, a heater 32, an absorbent material 33, a fan 34, a first damper 35, a second damper 36, and a controller 37.

[0065] (case)

[0066] like Figure 2 As shown, the housing 31 is a component that houses the ventilation device 30 and constitutes the appearance of the ventilation device 30. Furthermore, multiple inflow outlets are provided on the housing 31. Air flows into or out of the housing 31 through these multiple inflow outlets. More specifically, the housing 31 is provided with a first inflow outlet E1, a second inflow outlet E2, a third inflow outlet E3, and a fourth inflow outlet E4.

[0067] The first inflow outlet E1, the third inflow outlet E3, and the fourth inflow outlet E4 are connected to the outdoor side. The first inflow outlet E1, the third inflow outlet E3, and the fourth inflow outlet E4 are, for example, openings that penetrate the side wall of the housing 31 disposed outdoors.

[0068] The second inflow outlet E2 is connected to the indoor side. The second inflow outlet E2 can also be indirectly connected to the indoor side. For example, as... Figure 1 As shown, the second inlet outlet E2 is connected to the indoor unit 10 via pipe 60, and communicates with the indoor unit through the air outlet 13 of the indoor unit 10.

[0069] (Each flow path)

[0070] like Figure 2As shown, the first flow path P1 is formed inside the housing 31 and is a flow path for airflow. For example, the first flow path P1 is a space defined by the inner wall of the housing 31. Alternatively, the first flow path P1 can also be a flow path formed by piping disposed in the housing 31. The first flow path P1 connects the first inlet outlet E1 and the second inlet outlet E2. In addition, the second flow path P2 and the third flow path P3 are connected to the first flow path P1. The second flow path P2 is connected to the first flow path P1 between the absorbent material 33 (described later) and the fan 34 (described later). The third flow path P3 is connected to the first flow path P1 between the fan 34 and the second inlet outlet E2.

[0071] Here, indoor air and outdoor air are defined. For example... Figure 1 As shown, the air existing in the indoor space defined by wall K and which is the object of air conditioning is defined as indoor air. On the other hand, the air existing in the outdoor space that is isolated from the indoor space by wall K is defined as outdoor air.

[0072] (Heater)

[0073] like Figure 2 As shown, heater 32 is disposed in the first flow path P1 and is a heater that heats the air flowing toward the absorbent material 33. For example, heater 32 heats outdoor air flowing into the housing 31 from the first inlet outlet E1. Heater 32 can also be a heater whose resistance increases when current flows and the temperature rises. For example, heater 32 is a PTC (Positive Temperature Coefficient) heater that can suppress excessive rise in heating temperature. When using a PTC heater, since heater 32 itself regulates the heating temperature within a certain temperature range, it is not necessary to monitor the heating temperature.

[0074] (Absorbent material)

[0075] The absorbent material 33 is a component through which outdoor air can pass, and it is a component that absorbs moisture from or provides moisture to the passing outdoor air. The absorbent material 33 is positioned in the first flow path P1 at a location farther from the heater 32 than the first inlet outlet E1. The absorbent material 33 may have a circular plate shape, and may rotate with an axis passing through the center of the plate as its rotation axis. During operation of the ventilation device 30, the absorbent material 33 may also continuously rotate at a certain rotational speed.

[0076] The absorbent material 33 can be formed from a polymeric adsorbent that adsorbs moisture from the air. For example, the polymeric adsorbent is composed of sodium polyacrylate cross-linked polymers. Compared to adsorbents such as silica gel and zeolite, polymeric adsorbents absorb moisture quickly, can release moisture held at low heating temperatures, and can retain moisture for extended periods.

[0077] (fan)

[0078] Fan 34 is disposed in the first flow path P1 and is a fan that generates airflow in the first flow path P1. Fan 34 is disposed in the first flow path P1 at a position farther away from the first inlet outlet E1 than heater 32 and absorbent material 33. Alternatively, fan 34 may be disposed within housing 31 such that the axis of rotation of fan 34 is arranged along a direction from the upper surface of housing 31 toward the lower surface.

[0079] The fan 34 is capable of changing its rotation direction. More specifically, the fan 34 is capable of changing its rotation direction between a first rotation direction X that generates an airflow from the outside to the inside and a second rotation direction X2 that generates an airflow from the inside to the outside. In this embodiment, the first rotation direction X1 is clockwise and the second rotation direction X2 is counterclockwise.

[0080] For example, fan 34 is Figure 3A and Figure 3B The vortex fan shown. Figure 3A This is a top view of a vortex fan. Figure 3B yes Figure 3A A cross-sectional view of the vortex fan along line A-A.

[0081] like Figure 3A and Figure 3B As shown, the fan 34 includes an impeller 41 and a housing 42. A flow path 43 is formed between the impeller 41 and the housing 42 to allow airflow. The impeller 41 has a plurality of blades 44 arranged at predetermined intervals. The rotation direction of the impeller 41 can be changed. Two inlet outlets 45 and 46 connected to the flow path 43 are provided on the housing 42. The inlet outlets 45 and 46 are connected to a first flow path P1. The inlet outlets 45 and 46 face each other. Furthermore, the flow path 43 between the inlet outlets 45 and 46 narrows. By adopting this structure, air leakage can be prevented, and the efficiency of the fan 34 can be improved.

[0082] like Figure 3AAs shown, blades 44 are plate-shaped components extending radially outward from the rotation center of fan 34. Blades 44 can also extend along a radial straight line outward from the rotation center of fan 34. When the impeller 41 rotates in the first rotation direction X1, multiple blades 44 can deliver air from inlet outlet 45 to inlet outlet 46. Furthermore, when the impeller 41 rotates in the second rotation direction X2, multiple blades 44 can deliver air from inlet outlet 46 to inlet outlet 45, but this is not shown in the figure. With this structure, fan 34 can deliver air in different directions. Furthermore, compared to other fans whose rotation direction can be changed, fan 34 can easily create a pressure rise. This, in turn, prevents the accumulation of debris and other foreign objects in the flow path 43.

[0083] (First air gate)

[0084] The first damper 35 is a component within the housing 31 that switches the direction of airflow. For example... Figure 2 As shown, the first damper 35 is positioned at the connection between the first flow path P1 and the second flow path P2.

[0085] The first damper 35 is rotatable. By rotating the first damper 35 to one side, the second flow path P2 can be closed, connecting the first inflow outlet E1 with the second inflow outlet E2 or the fourth inflow outlet E4. Alternatively, by rotating the first damper 35 to the other side, the first flow path P1 on the side of the first inflow outlet E1 can be closed, connecting the second inflow outlet E2 or the fourth inflow outlet E4 with the third inflow outlet E3.

[0086] (Second air vent)

[0087] The second damper 36 is a component within the housing 31 that switches the direction of airflow. For example... Figure 2 As shown, the second damper 36 is positioned at the connection between the first flow path P1 and the third flow path P3.

[0088] The second damper 36 is rotatable. By rotating the second damper 36 to one side, the third flow path P3 can be closed, connecting the second inflow outlet E2 with either the first inflow outlet E1 or the third inflow outlet E3. By rotating the second damper 36 to the other side, the first flow path P1 on the side of the second inflow outlet E2 can be closed, connecting either the first inflow outlet E1 or the third inflow outlet E3 with the fourth inflow outlet E4.

[0089] (Controller)

[0090] The controller 37 controls the operating mode described later in the ventilation device 30. Elements (components) constituting the controller 37 include, for example, a memory (not shown) storing programs that enable these elements to function; and processing circuitry (not shown) corresponding to a processor such as a CPU (Central Processing Unit). The processor can also enable these elements to function as the controller 37 by executing programs stored in the memory. Furthermore, the programs executed by the processor are pre-recorded in the memory, but can also be recorded on non-volatile recording media such as memory cards and provided, or provided via telecommunications lines such as the Internet. More specifically, the controller 37 controls the rotation direction of the fan 34 and the rotation of the first damper 35 and the second damper 36.

[0091] The user selects an operating mode from multiple operating modes of the ventilation device 30 via a remote control (not shown). The controller 37 executes the operating mode selected by the user via the remote control. For example, if the user selects an operating mode for the ventilation device 30, the controller 37 executes an operating mode selected from humidification operation, dehumidification operation, intake ventilation operation, and exhaust ventilation operation. Furthermore, the regeneration operation described later is executed not based on the user's operation, but based on the duration of the dehumidification operation and the moisture retention of the absorbent material 33.

[0092] Here, the intake ventilation operation is an operation mode that supplies air from the outside to the inside. The exhaust ventilation operation is an operation mode in which indoor air flows to the outside. The humidification operation is an operation mode in which the heater 32 heats the outdoor air, and the heated outdoor air absorbs moisture from the absorbent material 33 and flows into the room. The dehumidification operation is an operation mode in which the heater 32 stops, and the outdoor air, dried by the absorbent material 33, flows into the room. In addition, the regeneration operation is an operation mode in which the absorbent material 33 is dried using heated outdoor air.

[0093] Next, use Figures 4 to 8 The operating mode of the ventilation device 30 is explained. Figure 4 This is a diagram showing the intake and ventilation operation of the ventilation device 30. Figure 5 This diagram illustrates the exhaust ventilation operation of the ventilation device 30. Figure 6 This diagram shows the humidification operation of the ventilation device 30. Figure 7 This diagram illustrates the dehumidification operation of the ventilation device 30. Figure 8 This diagram illustrates the regeneration operation of the ventilation device 30.

[0094] (Inhalation and ventilation operation)

[0095] During intake ventilation operation, fan 34 rotates in the first rotation direction X1, and outdoor air is introduced into the room. Intake ventilation operation is carried out with heater 32 in the OFF state. During intake ventilation operation, the first flow path P1 on the first inlet outlet E1 side is closed by the first damper 35, and the third flow path P3 is closed by the second damper 36.

[0096] like Figure 4 As shown, outdoor air flows from the outside into the second flow path P2 through the third inlet outlet E3, and then flows to the first flow path P1 via the first damper 35. Thus, the outdoor air passes through the fan 34, and through the second damper 36, flows into the room via the first flow path P1 and the second inlet outlet E2.

[0097] (Exhaust and ventilation operation)

[0098] During exhaust ventilation operation, fan 34 rotates in the second rotation direction X2, and indoor air is blown outdoors. Exhaust ventilation operation is performed with heater 32 in the OFF state. The first flow path P1 on the first inlet outlet E1 side is closed by the first damper 35, and the third flow path P3 is closed by the second damper 36.

[0099] like Figure 5 As shown, indoor air flows from the room into the first flow path P1 through the second inlet outlet E2, and then through the second damper 36 to the fan 34. The indoor air then flows through the fan 34, through the first damper 35, and through the second flow path P2 and the third inlet outlet E3 to the outside.

[0100] (Humidification operation)

[0101] During humidification operation, fan 34 rotates in the first rotation direction X1, and outdoor air is introduced into the room. Humidification operation is carried out with heater 32 in the ON state. The second flow path P2 is closed by the first damper 35, and the third flow path P3 is closed by the second damper 36.

[0102] like Figure 6 As shown, outdoor air flows from the outside into the first flow path P1 through the first inlet outlet E1. The outdoor air is heated by the heater 32, and the heated outdoor air absorbs the moisture held by the absorbent material 33. The humidified outdoor air flows into the room through the first flow path P1 and the second inlet outlet E2 via the first damper 35 and the second damper 36.

[0103] (Dehumidification operation)

[0104] During dehumidification operation, fan 34 rotates in the first rotation direction X1, and outdoor air is introduced into the room. Dehumidification operation is carried out with heater 32 stopped (OFF state). The second flow path P2 is closed by the first damper 35, and the third flow path P3 is closed by the second damper 36.

[0105] like Figure 7 As shown, outdoor air flows from the outside into the first flow path P1 through the first inlet outlet E1. The outdoor air is not heated by the heater 32 but passes through the absorbent material 33, thus capturing moisture from the outdoor air. The dried outdoor air then flows into the room through the first flow path P1 and the second inlet outlet E2 via the first damper 35 and the second damper 36.

[0106] When dehumidification continues, the absorbent material 33 continuously captures moisture from the outdoor air. Therefore, the absorbent material 33 may sometimes reach a state of saturation where it can no longer retain moisture. In such cases, a regeneration operation is performed to regenerate the moisture-capturing capacity of the absorbent material 33.

[0107] (Regeneration Operation)

[0108] During regeneration operation, fan 34 rotates in the first rotation direction X1, and outdoor air is blown out to the outside. Regeneration operation is carried out with heater 32 in the ON state. The second flow path P2 is closed by the first damper 35, and the first flow path P1 on the second inlet outlet E2 side is closed by the second damper 36.

[0109] like Figure 8 As shown, outdoor air flows from the outside into the first flow path P1 through the first inlet outlet E1. The outdoor air is heated by the heater 32, and the heated air absorbs the moisture held by the absorbent material 33. Therefore, the absorbent material 33 dries, and its moisture-capturing capacity is regenerated. The humidified outdoor air flows to the outside through the third flow path P3 and the fourth inlet outlet E4 via the second damper 36.

[0110] Regeneration and dehumidification operations are performed in pairs. Specifically, regeneration operation is performed when the duration of dehumidification operation is longer than the time until the absorbent material 33 reaches saturation. In this case, dehumidification and regeneration operations can be performed alternately. Thus, dehumidification operation is performed intermittently.

[0111] Alternatively, the direction of airflow during humidification and dehumidification operation can be referred to as the "first direction," the direction of airflow during exhaust ventilation operation as the "second direction," the direction of airflow during intake ventilation operation as the "third direction," and the direction of airflow during regeneration operation as the "fourth direction."

[0112] (Effect)

[0113] The ventilation device 30 according to the embodiment can achieve the following effects.

[0114] The ventilation device 30 includes a first flow path P1, a heater 32, an absorbent material 33, and a fan 34. The first flow path P1 connects a first inlet / outlet E1 connected to the outdoor side and a second inlet / outlet E2 connected to the indoor side. The fan 34 is disposed in the first flow path P1 and can change the first rotation direction X1 that generates airflow from the outdoor to the indoor side and the second rotation direction X2 that generates airflow from the indoor side to the outdoor side. The absorbent material 33 is disposed in the first flow path P1 closer to the first inlet / outlet E1 than the fan 34, and can absorb moisture from the air. The heater 32 is disposed in the first flow path P1 closer to the first inlet / outlet E1 than the absorbent material 33, and heats the air flowing towards the absorbent material 33. The ventilation device 30 performs humidification operation and exhaust ventilation operation in multiple operating modes. In humidification operation, the heater 32 heats the outdoor air, and the heated outdoor air absorbs moisture from the absorbent material 33 before flowing into the indoor side. In exhaust ventilation operation, indoor air flows outward. During humidification operation, fan 34 rotates in the first rotation direction X1, and during exhaust and ventilation operation, fan 34 rotates in the second rotation direction X2.

[0115] Here, the ventilation device 30 alternately performs humidification and exhaust ventilation operations at regular intervals. By adopting this structure, the ventilation device 30 performs humidification operation by introducing humidified outdoor air into the room and exhaust ventilation operation by blowing indoor air out to the outside, thus improving ventilation performance. During exhaust ventilation operation, the ventilation device 30 can easily exhaust polluted indoor air to the outside, improving indoor air cleanliness.

[0116] Multiple operating modes also include dehumidification operation, in which the heater 32 stops, and the outdoor air, dried by the moisture captured by the absorbent material 33, flows into the room. In dehumidification operation, the fan 34 rotates in the first rotation direction X1.

[0117] By adopting such a structure, the ventilation device 30 can also perform dehumidification operation by sending dry outdoor air into the room, thus improving the ventilation function.

[0118] The ventilation device 30 further includes: a second flow path P2 connected between the fan 34 and the absorbent material 33 in the first flow path P1; and a first damper 35 disposed at the connection between the first flow path P1 and the second flow path P2. A third inlet outlet E3 connected to the outdoor side is provided in the second flow path P2. The first damper 35 switches the direction of airflow in the first flow path P1 and the second flow path P2.

[0119] By adopting this structure, the ventilation device 30 can connect the fan 34 to the outside via the second flow path P2. In addition, the ventilation device 30 can connect the second inlet outlet E2 and the third inlet outlet E3 without using the absorbent material 33.

[0120] During humidification operation, the first damper 35 switches the flow direction of outdoor air from the first inlet outlet E1 into the first flow path P1 to a first direction, flowing through the first flow path P1 towards the second inlet outlet E2. During exhaust ventilation operation, the first damper 35 switches the flow direction of indoor air from the second inlet outlet E2 into the first flow path P1 to a second direction, flowing through the second flow path P2 towards the third inlet outlet E3.

[0121] By employing this structure, the ventilation device 30 allows indoor air to be exhausted to the outside through the second flow path P2 without passing through the absorbent material 33. Therefore, the ventilation device 30 can prevent pollutants such as particles and gases contained in the indoor air from adhering to the absorbent material 33.

[0122] Multiple operating modes also include an intake ventilation operation that supplies air from the outside to the inside. In the intake ventilation operation, the fan 34 rotates in the first rotation direction X1, and the first damper 35 switches the flow direction of the outdoor air from the third inlet outlet E3 into the second flow path P2 to a third direction that flows through the first flow path P1 to the second inlet outlet E2.

[0123] By employing this structure, the ventilation device 30 can introduce outdoor air into the room through the second flow path P2 without passing through the absorbent material 33. Therefore, during intake ventilation operation, the absorbent material 33 does not absorb excess moisture. Furthermore, because the ventilation device 30 performs intake ventilation operation while the heater 32 is stopped, energy efficiency is improved.

[0124] Furthermore, in the ventilation device 30, the dehumidification and humidification functions and the ventilation function are independent of each other. During intake and exhaust ventilation operations, air does not pass through the heater 32 and the absorbent material 33, thus reducing the air resistance of the ventilation device 30. Therefore, the ventilation device 30 can improve the efficiency of the fan 34 during intake and exhaust ventilation operations.

[0125] The ventilation device 30 also includes: a remote control (not shown) for the user to select one or more operating modes from a plurality of operating modes; and a controller 37 for executing one or more operating modes selected by the user via the remote control.

[0126] By adopting this structure, the ventilation device 30 can execute an appropriate operating mode according to the user's requirements. For example, when the user realizes that polluted air has been generated indoors, the user can select exhaust ventilation operation via remote control, and the controller 37 can execute the exhaust ventilation operation. Alternatively, for example, the user can select humidification operation and exhaust ventilation operation via remote control, and the controller 37 can execute exhaust ventilation operation together with humidification operation.

[0127] The ventilation device 30 further includes: a third flow path P3 connected to the first flow path P1 between the fan 34 and the second inlet outlet E2; and a second damper 36 disposed at the connection between the first flow path P1 and the third flow path P3. A fourth inlet outlet E4 connected to the outdoor side is provided in the third flow path P3. The second damper 36 can switch the direction of air flowing through the first flow path P1 and the third flow path P3.

[0128] By adopting such a structure, the ventilation device 30 is able to exhaust outdoor air flowing through the first flow path P1 to the outside.

[0129] Multiple operating modes also include a regeneration operation that uses heated outdoor air to dry the absorbent material 33. In the regeneration operation, the fan 34 rotates in the first rotation direction X1, and the second damper 36 switches the flow direction of the outdoor air from the first inlet outlet E1 into the first flow path P1 to a fourth direction through the third flow path P3 to the fourth inlet outlet E4.

[0130] By employing this structure, the ventilation device 30 can utilize the inflow of outdoor air to dry the absorbent material 33 and discharge the moisture retained in the absorbent material 33 to the outside. Therefore, the ventilation device 30 can regenerate the absorbent material 33.

[0131] It can alternate between dehumidification and regeneration operations.

[0132] By adopting such a structure, the ventilation device 30 can perform dehumidification operation intermittently.

[0133] Fan 34 is a vortex air supply fan.

[0134] By adopting such a structure, the ventilation device 30 can achieve pressure rise in the fan 34 and improve the efficiency of the fan 34.

[0135] Absorbent material 33 is a polymer adsorbent material.

[0136] By employing this structure, the rate of moisture absorption in the absorbent material 33 is increased, thus improving the efficiency of dehumidification operation of the ventilation device 30. Furthermore, the ventilation device 30 can remove the moisture held by the absorbent material 33 at a low heating temperature. Therefore, the ventilation device 30 can improve the efficiency of humidification and regeneration operations. Moreover, the absorbent material 33 can retain moisture for a longer period. The ventilation device 30 can prevent the retained moisture from flowing out of the ventilation device 30 over time, thus preventing accelerated corrosion of the ventilation device 30.

[0137] The air conditioner 1 includes an indoor unit 10, an outdoor unit 20, and an air exchange device 30, with the air exchange device 30 located on the outdoor unit 20.

[0138] By adopting this structure, the air conditioner 1 can improve its ventilation function. In addition, since the ventilation device 30 is configured in the outdoor unit 20, it can be easily installed in the existing outdoor unit 20.

[0139] The ventilation device 30 is used in an air conditioner 1 that includes an indoor unit 10 and an outdoor unit 20. The ventilation device 30 includes a first flow path P1 and a fan 34. The first flow path P1 connects a first inlet outlet E1 connected to the outdoor side and a second inlet outlet E2 connected to the indoor side. The fan 34 is disposed in the first flow path P1 and is capable of changing a first rotation direction X1 that generates airflow from the outdoor to the indoor side and a second rotation direction X2 that generates airflow from the indoor side to the outdoor side.

[0140] By adopting such a structure, the ventilation device 30 is used in the air conditioner 1, and by performing an intake ventilation operation that sends outdoor air into the room and an exhaust ventilation operation that blows indoor air out to the outside, the ventilation function can be improved.

[0141] The first flow path P1 can also be referred to as the "flow path".

[0142] Furthermore, in this embodiment, an air conditioner 1 including a ventilation device 30 is described, but the device including the ventilation device 30 is not limited to the air conditioner 1. The ventilation device 30 can also be applied to other devices.

[0143] Furthermore, in this embodiment, an example of a vortex fan for fan 34 is described, but it is not limited to this. Fan 34 may also be other fans capable of changing the direction of rotation.

[0144] Furthermore, in this embodiment, an example of the controller 37 executing a user-selected operating mode is described, but it is not limited to this. The ventilation device 30 may also include a humidity sensor, and the controller 37 may switch operating modes based on the humidity measured by the sensor. For example, when the indoor humidity measured by the sensor is below a certain threshold, the controller 37 performs humidification operation. In addition, the sensor may also measure air-related parameters other than humidity.

[0145] Furthermore, while the embodiment describes an example where the first damper 35 and the second damper 36 are rotatable, it is not limited to this. The first damper 35 and the second damper 36 may also be dampers different from the rotatable dampers. Additionally, the first damper 35 and the second damper 36 may also be opening and closing mechanisms.

[0146] Furthermore, while the embodiment describes an example of performing regeneration and dehumidification operations in pairs, it is not limited to this. Regeneration operations can also be performed depending on the state of the absorbent material 33. For example, regeneration operations may not be performed after dehumidification operations if the absorbent material 33 has not reached saturation. Additionally, regeneration operations may not be performed if the duration of dehumidification operations is short, or if humidification operations are performed after dehumidification operations.

[0147] The present invention has been fully described with reference to the accompanying drawings and preferred embodiments; however, various modifications and variations will be apparent to those skilled in the art. Such modifications and variations should be understood to be included within the scope of the claims, provided they do not depart from the scope of the invention as defined in the claims.

[0148] Industrial availability

[0149] The ventilation device of the present invention is useful as a ventilation device for air conditioners.

[0150] Explanation of reference numerals in the attached figures

[0151] 1 air conditioner

[0152] 10 indoor units

[0153] 11 First heat exchanger

[0154] 12 indoor fans

[0155] 13 air inlets

[0156] 20 outdoor units

[0157] 21 Second heat exchanger

[0158] 22 outdoor fans

[0159] 23 compressors

[0160] 24 Expansion Valve

[0161] 30 ventilation devices

[0162] 31 shell

[0163] 32 heaters

[0164] 33 Absorbent Materials

[0165] 34 fans

[0166] 35 First air door

[0167] 36 Second air door

[0168] 37 controller

[0169] 41 Impeller

[0170] 42 casing

[0171] 43 flow path

[0172] 44 blades

[0173] 45 Inflow and Outflow

[0174] 46 Inflow and Outflow

[0175] 50 refrigerant piping

[0176] 60 piping

[0177] P1 first flow path

[0178] P2 Second Flow Path

[0179] P3 Third Flow Path

[0180] E1 First Inflow / Outflow

[0181] E2 Second Inflow / Outflow

[0182] E3 Third Inflow / Outflow

[0183] E4 Fourth Inflow / Outflow

[0184] K Wall

[0185] X1 First rotation direction

[0186] X2 Second rotation direction.

Claims

1. A ventilation device, characterized in that, include: The first flow path connects the first inflow outlet connected to the outdoor side and the second inflow outlet connected to the indoor side; A fan, configured in the first flow path, is capable of changing between a first rotational direction that generates an airflow from the outside to the inside and a second rotational direction that generates an airflow from the inside to the outside. An absorbent material for absorbing moisture from the air is disposed in the first flow path at a position closer to the first inlet outlet than the fan. A heater, disposed in the first flow path closer to the first inlet outlet than the absorbent material, is used to heat the air flowing toward the absorbent material; and The second flow path is connected to the third inflow outlet and the first flow path between the fan and the absorbent material, wherein the third inflow outlet is connected to the outdoor side; The ventilation device performs humidification and exhaust ventilation operations in multiple operating modes. The humidification operation involves the heater heating outdoor air passing through the first flow path, and the heated outdoor air absorbing moisture from the absorbent material before flowing into the room. The exhaust ventilation operation involves allowing indoor air to flow to the outside through the second flow path without passing through the absorbent material. During the humidification operation, the fan rotates in the first rotation direction; during the exhaust ventilation operation, the fan rotates in the second rotation direction.

2. The ventilation device as described in claim 1, characterized in that: The multiple operating modes also include a dehumidification operation, which involves stopping the heater and allowing the outdoor air, dried by the moisture trapped by the absorbent material, to flow into the room. During the dehumidification operation, the fan rotates in the first rotation direction.

3. The ventilation device as described in claim 1, characterized in that, Also includes: A first damper is configured at the connection between the first flow path and the second flow path. The first damper can switch the direction of air flowing in the first flow path and the second flow path.

4. The ventilation device as described in claim 3, characterized in that: The first damper, during the humidification operation, switches the flow direction of the outdoor air flowing from the first inlet outlet into the first flow path to a first direction flowing through the first flow path to the second inlet outlet. During the exhaust ventilation operation, it switches the flow direction of the indoor air flowing from the second inlet outlet into the first flow path to a second direction flowing through the second flow path to the third inlet outlet.

5. The ventilation device as described in claim 4, characterized in that: The multiple operating modes also include an intake ventilation operation that supplies air from the outside to the inside. During the intake and ventilation operation, the fan rotates in the first rotation direction, and the first damper switches the flow direction of the outdoor air from the third inlet outlet into the second flow path to a third direction, flowing through the first flow path to the second inlet outlet.

6. The ventilation device according to any one of claims 1 to 5, characterized in that, Also includes: A remote control for users to select one or more of the multiple operating modes; and The controller executes one or more operating modes selected by the user via the remote control.

7. The ventilation device as described in claim 2, characterized in that, Also includes: A third flow path is connected at the position between the fan in the first flow path and the second inlet / outlet; and A second damper is configured at the connection between the first flow path and the third flow path. A fourth inflow outlet connected to the outdoor side is provided in the third flow path. The second damper can switch the direction of airflow in the first flow path and the third flow path.

8. The ventilation device as described in claim 7, characterized in that: The multiple operating modes also include a regeneration operation that uses heated outdoor air to dry the absorbent material. During the regeneration operation, the fan rotates in the first rotation direction, and the second damper switches the flow direction of the outdoor air from the first inlet outlet into the first flow path to the fourth direction via the third flow path to the fourth inlet outlet.

9. The ventilation device as described in claim 8, characterized in that: The dehumidification operation and the regeneration operation are performed alternately.

10. The ventilation device as described in any one of claims 1 to 5, 7 to 9, characterized in that: The fan is a vortex fan.

11. The ventilation device according to any one of claims 1 to 5, 7 to 9, characterized in that: The absorbent material is a polymeric adsorbent.

12. An air conditioner, characterized in that: Includes an indoor unit, an outdoor unit, and a ventilation device as described in any one of claims 1 to 11. The ventilation device is located in the outdoor unit.

13. A ventilation device, characterized in that, include: The first flow path connects the first inflow outlet connected to the outdoor side and the second inflow outlet connected to the indoor side; A fan, configured in the first flow path, is capable of changing between a first rotational direction that generates an airflow from the outside to the inside and a second rotational direction that generates an airflow from the inside to the outside. An absorbent material for absorbing moisture from the air is disposed in the first flow path at a position closer to the first inlet outlet than the fan. and A heater, which is disposed in the first flow path at a position closer to the first inlet outlet than the absorbent material, is used to heat the air going toward the absorbent material; The ventilation device performs humidification and exhaust ventilation operations in multiple operating modes. The humidification operation involves the heater heating outdoor air, which then absorbs moisture from the absorbent material and flows into the room. The exhaust ventilation operation involves the indoor air flowing outwards. During the humidification operation, the fan rotates in the first rotation direction; during the exhaust ventilation operation, the fan rotates in the second rotation direction. The multiple operating modes also include a dehumidification operation, which involves stopping the heater and allowing the outdoor air, dried by the moisture trapped by the absorbent material, to flow into the room. During the dehumidification operation, the fan rotates in the first rotation direction. The ventilation device further includes: A third flow path connected at the location between the fan in the first flow path and the second inlet / outlet; and A second damper is configured at the connection between the first flow path and the third flow path. A fourth inflow outlet connected to the outdoor side is provided in the third flow path. The second damper can switch the direction of airflow in the first flow path and the third flow path.

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