TWM532018U - Ventilation apparatus with features of circulated air regulation and purification - Google Patents

Description

Ventilation device with regulated gas circulation purification

The present invention relates to a ventilation device, and more particularly to a ventilation device having a mode of regulating and switching a gas circulation purification.

Since the air quality is related to the health of the body, in order to avoid poor ventilation in the indoor environment, most of the closed indoor spaces are equipped with a full heat exchange system to pump the outside air into the indoor space through the multi-layer filtered purified air. The dirty air is discharged to the outside to form a ventilation, thereby achieving the purpose of ventilation to maintain indoor air fresh.

However, the conventional full heat exchange system has the following disadvantages. First, when the outdoor air quality is extremely poor or has a strong odor, the service life of the filter device in the system is greatly attenuated, and even the dust particles in the outdoor air cannot be completely filtered. And odor molecules; secondly, during the process of ventilation, the air in the room and the outside world will be convected. Because of the temperature difference between the indoor and the outside air, especially when the indoor is a cold room, the gas exchange is more energy-generating. Loss, resulting in increased power consumption and insufficient capacity of the cold room. Third, the intake and exhaust passages are individually connected to the exhaust pipe, causing the system to occupy too large a volume.

Therefore, how to solve the above problems is the goal that the creator needs to study and improve.

The main purpose of the present invention is to provide a ventilating device with a regulated gas circulation purification, which can automatically switch to form an external circulation mode or an internal circulation mode to achieve air exchange by detecting indoor and outdoor air quality and temperature.

In order to achieve the above object, the present invention provides a ventilating device with a conditioned gas circulation purification, comprising a casing, a fan unit, a multiple filtering unit, a heat exchange unit, a sensing unit and a switching structure, and the chassis has An air inlet space, an exhaust space, an air outlet connecting the air intake space, an air inlet connecting the exhaust space, and an air outlet connecting the air inlet space and the exhaust space; the fan unit is disposed in the chassis and The air exchange unit is respectively connected to the air inlet and the air outlet; the heat exchange unit is disposed in the air intake space in the chassis; the multiple filter unit is disposed in the air intake space in the chassis; the sensing unit includes a sensing module and an electrical connection sensing module a control module of the group; the switching structure is disposed in the chassis adjacent to the air inlet and includes a driving motor electrically connected to the control module, and a swinging blade of the power connecting driving motor, wherein the swinging blade is selectively located at an open position The outer loop is formed by blocking the communication between the intake space and the exhaust space, or a closed position is formed to connect the intake space with the exhaust space to form an inner circulation.

In one embodiment, the sensing module is configured to detect an indoor air pollution value, and the indoor air pollution value includes a fine aerosol (PM2.5) content and a carbon dioxide concentration value, and the fine aerosol (PM2) .5) If any of the content or the carbon dioxide concentration value exceeds an upper limit setting value, the control module outputs a control signal to the drive motor to control the swinging blade to swing to the closed position.

In one embodiment, wherein the sensing module further includes detecting an outdoor temperature value, and the outdoor temperature value is less than a lower limit setting value, the control module outputs a control signal to the driving motor to control the swinging blade to swing to Closed position.

In an embodiment, the PTC heating unit is electrically connected to the control module, and the PTC heating unit is disposed in the air intake space adjacent to the air inlet, and the sensing module further includes an indoor detection unit. The temperature value, and the indoor temperature value is less than a lower limit set value, the control module outputs a control signal to control the heating of the PTC heating unit.

In one embodiment, the air outlet is provided with a partition beam to separate an air inlet and an air outlet from the air outlet, and the switching structure further includes a frame cover and is disposed in the corresponding air inlet in the chassis. The swinging leaf plate includes a plate body portion and a first end edge and a second end edge extending from the two sides of the plate body portion, and when the rocking blade plate is in the open position, the first end edge abuts against the partition beam and The second end edge abuts against the frame cover such that the intake port communicates with the intake space and the exhaust port communicates with the exhaust space.

In an embodiment, a first stop wall extends from the outer periphery of the air inlet toward the inside of the chassis, and a second stop wall extends from the outer periphery of the air outlet toward the inside of the chassis, and the swinging blade is closed. In position, the first end edge abuts the second stop wall and the second end edge abuts the first stop wall to block the intake port from communicating with the intake space and block the exhaust port from communicating with the exhaust space. The plate body to the second end edge has an arcuate bend, and the first stop wall has an extended length that is smaller than the second stop wall.

In one embodiment, the fan unit includes an upper bucket group and a lower bucket group. The upper bucket group is configured corresponding to the air outlet and communicates with the air outlet and the air intake space, and the lower bucket group is corresponding to the air inlet and is connected to the air inlet. Tuyere and exhaust space.

In one embodiment, the chassis includes a box body and a cover plate covering the box body, and the box body is configured with a plurality of partition plates to separate the air intake space and the exhaust space, and the partitions are used to intake air. The space is separated from the air outlet by a second accommodating space, a third accommodating space and a fourth accommodating space which are connected to each other, and the exhaust space is directed from the air outlet to the air outlet. Separating a fifth accommodating space, a sixth accommodating space and a first accommodating space, and the plurality of filtering units are disposed in the second accommodating space, and the heat exchange unit is disposed in the third accommodating space The space and the fan unit are disposed in the fourth accommodating space, and the control module is disposed in the fifth accommodating space, and the switching structure is disposed between the first accommodating space and the second accommodating space.

The ventilating device with the conditioned gas circulation purification described in the present invention has the following effects: the special design and switching structure of the intake and exhaust spaces formed by the arrangement of the accommodating spaces in the chassis and The corresponding design of the single air inlet improves the conventional air intake and exhaust air to separately connect the vent pipe to cause the cabinet to be oversized, and the wall mounting method can be used to improve the space utilization rate.

10‧‧‧Chassis

10a‧‧‧ cabinet

10b‧‧‧ cover

100‧‧‧Internal space

100a‧‧‧Intake space

100b‧‧‧Exhaust space

101‧‧‧First accommodation space

101a‧‧‧Intake area

101b‧‧‧Exhaust area

102‧‧‧Second accommodation space

103‧‧‧ third accommodating space

104‧‧‧fourth accommodation space

105‧‧‧Fifth accommodation space

106‧‧‧ Sixth accommodation space

11‧‧‧Baffle

12‧‧‧air outlet

13‧‧‧ gas outlet

13a‧‧‧air inlet

13b‧‧‧Exhaust port

131‧‧‧Separate beams

14‧‧‧Air inlet

20‧‧‧Switching structure

21‧‧‧Drive motor

211‧‧‧ pivot

22‧‧‧ pendulum

221‧‧‧ Board Department

222‧‧‧ first end edge

223‧‧‧second edge

23‧‧‧ Frame cover

30‧‧‧PTC heating unit

40‧‧‧Multiple filter unit

41‧‧‧Primary filter components

42‧‧‧Medium effect filter assembly

43‧‧‧Electrostatic dust collection assembly

50‧‧‧Sensor unit

60‧‧‧Heat exchange unit

70‧‧‧Fan unit

71‧‧‧Upper blade group

710‧‧‧Upper vent

72‧‧‧lower blade group

720‧‧‧ lower vent

C1‧‧‧ external circulation

C2‧‧‧ inner loop

Fig. 1 is a perspective view showing one side of the ventilating device of the present invention.

Fig. 2 is a perspective view showing the other side of the ventilating device of the present invention (the switching structure is in an open state).

Figure 3 is a side cross-sectional view of the ventilator of the present invention.

Figure 4 is a cross-sectional view showing the switching structure of the present invention in an open state.

Fig. 5 is a top cross-sectional view (upwind wheel) of the ventilating device of the present invention in an outer circulation state.

Fig. 6 is a top cross-sectional view (downwind wheel) of the ventilating device of the present invention in an outer circulation state.

Fig. 7 is a perspective view showing the other side of the ventilating device of the present invention (the switching structure is in a closed state).

Figure 8 is a cross-sectional view showing the switching structure of the present invention in a closed state.

Fig. 9 is a top cross-sectional view (downwind wheel) of the ventilating device of the present invention in an inner circulation state.

The detailed description and technical content of the present invention are described below with reference to the drawings, but the drawings are only for reference and explanation, and are not intended to limit the creation.

Referring to FIG. 1 to FIG. 6 , the present invention provides a ventilation device with a modified gas circulation purification, which is used for exchanging indoor and outdoor air. The ventilation device 1 of the present invention comprises a casing 10 and a switching structure 20 . A PTC heating unit 30, a multiple filter unit 40, a sensing unit 50, a heat exchange unit 60, and a fan unit 70.

The casing 10 includes a casing 10a and a cover 10b covering the casing 10a. The casing 10a has an internal space 100 and a plurality of partitions 11 are disposed in the casing 10a to partition the internal space 100 into an air intake. a space 100a and an exhaust space 100b, and one side of the casing 10a is provided with an air outlet 12 communicating with the air intake space 100a and an air inlet 14 communicating with the air space 100b, and an end of the air outlet 12 is provided with a communication inlet. The air space 100a and an air outlet 13 of the exhaust space 100b, the air outlet 13 is provided with a partition beam 131 to partition the air inlet 13 from an air inlet 13a and an air outlet 13b, and the air inlet 13b A first stop wall 132 extends from the outer periphery of the casing 10a, and a second stop wall 133 extends from the outer periphery of the exhaust port 13b toward the casing 10a. The first stop wall 132 and the second stop wall 132 The length of the extended section of the stop wall 133 may be the same or different. Although the cross-sectional length of the second stop wall 133 is larger than the first stop wall 132, it is only used as a first embodiment. The reference description is not limited by this schema.

As described above, the partitions 11 further separate the air intake opening 100 from the air inlet 13 to the air outlet 12 in a second accommodating space 102 and a third accommodating space 103. And a fourth accommodating space 104, and the venting space 100b is sequentially separated from the air outlet 12 toward the air inlet 13 by a fifth accommodating space 105, a sixth accommodating space 106, and a first A housing space 101.

The PTC heating unit 30 is disposed in the second accommodating space 102 and adjacent to the position of the gas transmission port 13 and electrically connected to the sensing unit 50, which comprises a plurality of heat dissipating fins for enhancing the heat convection effect, and the power of the PTC heat conduction is As the heat dissipation conditions change, when the heat generated by the PTC cannot be effectively taken away by the environment in the absence of wind or low heat dissipation conditions, the PTC gauge temperature will be close to the Curie point (Ct) temperature, and the PTC heat conduction power at this time. Will drop to the lowest power (W), and when the heat dissipation conditions are good (in low temperature, water or a large amount of air flow), when the PTC heat conduction meter temperature drops, the power will rise to maintain the temperature balance, so that it has heating efficiency. The higher the surface temperature, the smaller the output current and the wider application range.

The multiple filter unit 40 is disposed in the second accommodating space 102 and includes a primary filter assembly 41, an intermediate filter assembly 42 and an electrostatic dust collecting assembly 43. The three are sequentially disposed to respectively capture the filtered air. Suspended particles of 0.05 μm to 1 μm, 1 μm to 5 μm, and 5 μm or more.

The heat exchange unit 60 is disposed in the third accommodating space 103, and is composed of a plurality of fin-shaped special treatment papers which are alternately stacked on the flat plate and the wave to form a flat fin-like structure of the airflow layer and the spacer layer, and the special use is used. The spacer layer made of the treated paper has moisture permeability and air barrier property; thereby greatly improving heat exchange efficiency and reducing gas leakage, and avoiding cross-contamination of bacteria from the exhaust passage into the fresh air passage. Since the passage for supplying and discharging air is completely separated by the partition layer, the fresh air can be continuously delivered to the room without being mixed with the dirty air discharged from the room, wherein the flat fin-like structure can be cross-circulated. And the paper material is coated with a film layer having a very high density, which can separate the inhaled air from the exhausted air, and can reduce the flow ratio of water-soluble gas such as ammonia gas and hydrogen gas, and further, utilizes a high degree of water vapor permeability. Sexual traits to assist in the conversion of water vapor, increase the permeability of water vapor, effectively block unwanted gases to form inefficient gas exchange And high-efficiency conversion of heat.

The fan unit 70 is disposed in the fourth accommodating space 104 and includes an upper vane group 71 adjacent to the cover plate 10b and a lower vane group 72 away from the cover plate 10b. The upper vane group 71 has an upper vent 710 for communication. The fourth accommodating space 104 and the air outlet 12 have a lower vent 720 to communicate with the fifth accommodating space 105 and the air inlet 14. In addition, the air inlet 14 is adjacent to the heat exchange unit 60 by the cover 10b. The opening is formed with an opening and formed with the casing 10a. The indoor air enters through the air inlet 14 and flows through the flat fin-like structure to reach the bottom space, and the bottom space is disconnected from the lower bucket group 72. The air holes 720 are in communication with each other and are not directly connected to the fifth accommodating space 105. The air is drawn in through the lower vent 720 and then discharged to the fifth accommodating space 105.

The switching structure 20 is disposed in the housing 10a and adjacent to the air inlet 13 for blocking or connecting the first accommodating space 101 and the second accommodating space 102. The switching structure 20 includes a driving motor 21 and a power connection. A swinging blade 22 of the driving motor 21 and a frame cover 23 assembled in the casing 10a, wherein the driving motor 21 can be a stepping motor and assembled in the casing 10a, and the driving motor 21 is pivoted axis The 211 power is connected to the swinging blade 22, and the frame cover 23 is disposed on a side of the casing 10a away from the air inlet 13 , and the swinging blade 22 is movably disposed between the frame cover 23 and the air inlet 13 .

As described above, the swinging blade 22 includes a plate portion 221 and a first end edge 222 and a second end edge 223 extending from the two sides of the plate portion 221, and the plate body portion 221 to the first end edge 222 The plate body portion 221 to the second end edge 223 are formed with an arcuate bend toward the second accommodation space 102. Although the figure is shown as an arc-shaped bend, it is not The driving motor 21 controls the swinging blade 221 to swing to be in an open position or a closed position. When in the open position, the first end edge 222 of the rocking blade 22 is directed to the air inlet 13 and adjacent to the dividing beam. The second end edge 223 is abutted against the frame cover 23, thereby separating the first accommodating space 101 from an air intake area 101a that communicates with the second accommodating space 102 and the sixth accommodating space 106. An exhaust region 101b causes the outside air to be drained to the second accommodating space 102 through the air inlet 13a and the arc-shaped bending of the swinging blade 20, and the gas in the exhausting region 101b is discharged to the outside through the exhaust port 13b. ,As shown in Figure 4.

Referring to FIG. 7 to FIG. 9 together, when in the closed position, the first end edge 222 of the rocking blade 22 abuts against the first stop wall 132, and the second end edge 223 abuts the second stop. The blocking wall 133 blocks the inlet passage of the outside air, so that the first accommodating space 101 and the second accommodating space 102 communicate with each other, so that the gas circulates only inside the casing 10.

The sensing unit 50 includes a sensing module (not shown) and a control module (not shown) electrically connected to the sensing module. The sensing module is a plurality of sensors, which are used for Detecting an indoor air pollution value, an outdoor air pollution value, an indoor temperature value, and an outdoor temperature value, and the control module is electrically connected to the PTC heating module 30, the fan unit 70, and the driving motor of the foregoing switching structure 20, respectively. 21. The indoor indoor air pollution value and the outdoor air pollution value respectively comprise a fine aerosol (PM2.5) content and a carbon dioxide concentration value, and the fine aerosol (PM2.5) content and the carbon dioxide concentration value respectively define an upper limit setting. The value, the indoor temperature value and the outdoor temperature value respectively define a lower limit set value.

According to the above, the upper limit of the content of the fine aerosol (PM2.5) in the indoor emptying value is 70 to 150 μg/m ³ , and preferably, the upper limit is 150 μg/m ³ , and the carbon dioxide concentration is The upper limit setting value of the value is 400 to 1200 ppm, preferably, the upper limit setting value is 1000 ppm, and the lower limit setting value of the indoor temperature value is 10 to 20 degrees Celsius. Preferably, the lower limit setting value is Celsius. At 15 degrees, the lower limit of the outdoor temperature value is set to 0 degrees Celsius to minus 5 degrees Celsius.

When the ventilation device of the present invention is in the off state, the swinging blade 22 of the switching structure 20 is located in the closed position. When the ventilation device is activated, the swinging blade 22 is swung to the above-mentioned open position, and then the upper fan unit 70 is mounted. The wind wheel 71 and the lower wind wheel 72 start to operate to draw the outdoor air to the air intake area 101a of the first accommodating space 101 through the air inlet 13a, and the incoming air sequentially passes through the accommodating spaces of the air space 100a. The gas filter and the heat exchange of the fine dust particles in the air and the heat exchange unit 60 are filtered by the multiple filter unit 40, and then sucked by the upper vent 710 of the upper wind wheel 71 and discharged into the indoor space through the air outlet, while at the same time The air in the space enters the chassis 10 through the air inlet 14 and through the heat exchange unit 60, and merges into the lower vent 720 of the lower wind wheel 72, and sequentially passes through the fifth accommodating space 105 and the sixth accommodating space 106. The exhaust region 101b of the first accommodating space 101 and the exhaust port 13b are sent to the outside to form an outer circulation.

As described above, during operation, the sensing module continuously detects the fine aerosol (PM2.5) content, the carbon dioxide concentration value, the indoor temperature value, and the outdoor air drawn into the air in the cabinet 10 indoors and outdoors. The temperature value, when it is detected that any of the above exceeds the defined upper or lower limit set value, the control module of the ventilator of the present invention will send a control signal to the drive motor 21 to control the swinging blade 22 to swing to the foregoing Close the position to form an inner loop as follows:

a. When the content of fine aerosol (PM2.5) in the indoor air exceeds the upper limit set value.

b. When the indoor air carbon dioxide concentration value exceeds the upper limit set value.

c. When the content of fine aerosol (PM2.5) of the outdoor air exceeds the upper limit set value, the drive motor controls the swinging blade 22 to the aforementioned closed position.

d. When the outdoor air carbon dioxide concentration value exceeds the upper limit set value.

e. When the outdoor temperature value is lower than the lower limit set value.

The above five cases cause the ventilating device of the present invention to enter an inner circulation state, which draws indoor air into the casing 10 and circulates between the intake space 100a and the exhaust space 100b until the sensing module detects After detecting that any one of the above a~e points or more is returned to the set value, the control module sends a control signal to the driving motor 21 to control the swinging blade 22 to swing to the open position to form an outer loop state. Further, when the indoor temperature value is lower than the lower limit set value, the control module sends a control signal to control the PTC heating unit 30 to heat the air flowing through the exhaust space 100a.

The present invention has a gas ventilating device for regulating gas circulation purification, and can adopt a wall-mounted installation method to improve space utilization, and a special design and switching structure of the intake and exhaust spaces formed by the arrangement of the housing spaces of the casing 10a. 20 and the corresponding design of a single air inlet, to improve the conventional intake and exhaust need to individually connect their snorkels, resulting in excessive volume of the chassis, and by automatically detecting the quality of the air and indoor and outdoor temperature values for immediate control Switching structure changes to form an internal circulation state or an external circulation state, and filtering dust and odor in the air, using a special air duct design and a heat exchange filter element, ingeniously exchanging indoor and outdoor air, and bringing the outside air closer to room temperature. The way to introduce indoors, so that it will not let the comfortable temperature loss, but also save the electricity cost of air-conditioning to achieve energy-saving effect.

In summary, the ventilator that regulates gas circulation purification can achieve the intended purpose of use, and solve the lack of conventional knowledge. Because of its novelty and progress, it fully meets the requirements of new patent applications. To file an application in accordance with the Patent Law, please check and grant the patent in this case to protect the rights of the creator.

10‧‧‧Chassis

10a‧‧‧ cabinet

10b‧‧‧ cover

100‧‧‧Internal space

102‧‧‧Second accommodation space

103‧‧‧ third accommodating space

104‧‧‧fourth accommodation space

12‧‧‧air outlet

14‧‧‧Air inlet

20‧‧‧Switching structure

21‧‧‧Drive motor

22‧‧‧ pendulum

23‧‧‧ Frame cover

30‧‧‧PTC heating unit

40‧‧‧Multiple filter unit

50‧‧‧Sensor unit

60‧‧‧Heat exchange unit

70‧‧‧Fan module

Claims (13)

A ventilating device with a conditioned gas circulation purification, comprising: a casing having an intake space, an exhaust space, an air outlet connecting the air intake space, an air inlet connecting the exhaust space, and connecting the air inlet a gas outlet and a gas outlet of the exhaust space; a fan unit disposed in the chassis and respectively connected to the air inlet and the air outlet; a heat exchange unit disposed in the air intake space in the chassis; a multi-filter unit is disposed in the air intake space in the chassis; a sensing unit includes a sensing module and a control module electrically connected to the sensing module; The switching structure includes a driving motor electrically connected to the control module, and a swinging blade electrically connected to the driving motor. The swinging blade is selectively located at an open position to block the The intake space is in communication with the exhaust space, or a closed position to communicate the intake space and the exhaust space. The ventilation device for regulating gas circulation purification according to claim 1, wherein the sensing module is configured to detect an indoor air pollution value, wherein the indoor air pollution value comprises a fine aerosol (PM2.5) content and a carbon dioxide concentration value, and wherein the fine aerosol (PM2.5) content or the carbon dioxide concentration value exceeds an upper limit set value, the control module outputs a control signal to the drive motor to control the swing leaf The plate swings to the closed position. The ventilating device for regulating gas circulation purification according to claim 2, wherein the upper limit setting value of the fine aerosol (PM2.5) content is bound to 70-150 μg/m ³ , and the upper limit of the carbon dioxide concentration value The set value is between 400 and 1200 ppm. The ventilation device for regulating gas circulation purification according to claim 1, wherein the sensing module further comprises detecting an outdoor temperature value, and the outdoor temperature value is less than a lower limit setting value, and the control module is A control signal is output to the drive motor to control the swinging blade to swing to the closed position, the lower limit setting being between 0 degrees Celsius and minus 5 degrees Celsius. The ventilating device for regulating gas circulation purification according to claim 1, further comprising a PTC heating unit electrically connected to the control module, wherein the PTC heating unit is disposed in the air intake space adjacent to the air inlet position. The ventilating device for regulating gas circulation purification according to claim 5, wherein the sensing module further comprises detecting an indoor temperature value, and wherein the indoor temperature value is less than a lower limit setting value, the control module outputs a The control signal controls the heating of the PTC heating unit, and the lower limit setting is between 10 and 20 degrees Celsius. The ventilating device for regulating gas circulation purification according to claim 1, wherein the air outlet is provided with a partition beam to separate the air inlet port from an air inlet and an air outlet, and the switching structure further comprises a frame cover is disposed in the chassis corresponding to the air outlet, the swinging leaf plate includes a plate body portion and a first end edge and a second end edge extending from the two sides of the plate body portion When the louver is in the open position, the first end edge abuts against the dividing beam and the second end edge abuts against the frame cover, so that the air inlet communicates with the air inlet space and the air vent Connect the exhaust space. The ventilating device for regulating gas circulation purification according to claim 7, wherein a first stop wall extends from the outer periphery of the air inlet toward the inner casing, and the outer periphery of the air outlet faces the inner casing Extending a second stop wall, wherein the rocking blade is in the closed position, the first end edge abuts the second stop wall and the second end edge abuts the first stop wall to The intake port is blocked from communicating with the intake space, and the exhaust port is blocked from communicating with the exhaust space. The ventilating device for regulating gas circulation purification according to claim 8, wherein the plate body portion to the second end edge has an arc-shaped bending, and the first stopping wall has an extended length smaller than the first a second stop wall, wherein the rocking plate is in the closed position such that the second end edge abuts the first stop wall and the first end edge abuts the second stop wall in the closed position. The ventilating device for regulating gas circulation purification according to claim 1, wherein the fan unit comprises an upper bucket group and a lower bucket group, wherein the upper bucket group is disposed corresponding to the air outlet and communicates with the air outlet and the The air intake space, the lower bucket group is disposed corresponding to the air inlet and communicates with the air inlet and the exhaust space. The ventilating device for regulating gas circulation purification according to claim 1, wherein the multiple filtering unit comprises a primary filtering component, a medium efficiency filtering component and an electrostatic dust collecting component, wherein the multiple filtering unit is disposed on the gas conveying device Between the mouth and the heat exchange unit, suspended particles of 0.05 μm to 1 μm, 1 μm to 5 μm, and 5 μm or more in the air are respectively captured. The ventilating device for regulating gas circulation purification according to claim 1, wherein the casing comprises a casing and a cover covering the casing, wherein the casing is provided with a plurality of partitions to separate the intake air. Space and the exhaust space. The ventilating device for regulating gas circulation purification according to claim 12, wherein the plurality of partitions sequentially separate the air intake space from the air outlet to the air outlet and sequentially connect to a second accommodating connection a space, a third accommodating space and a fourth accommodating space, and the venting space is sequentially separated from the air outlet toward the air outlet by a fifth accommodating space and a sixth capacity a space and a first accommodating space, wherein the multiplex filter unit is disposed in the second accommodating space, the heat exchange unit is disposed in the third accommodating space, and the fan unit is disposed in the fourth accommodating space The space and the control module are disposed in the fifth accommodating space, and the switching structure is disposed between the first accommodating space and the second accommodating space.