Air purification device and air conditioner

Abstract

The utility model relates to the technical field of air purification, and discloses an air purification device which comprises a box body, a partition plate and a purification module. A fresh air opening, a first air return opening and an exhaust opening are formed in the side wall of the box. The partition plate is arranged in the box body and divides the interior of the box body into a first cavity and a second cavity, a communication port is formed in the partition plate, the fresh air port and the first air return port are both communicated with the first cavity, and the exhaust port is communicated with the second cavity; the purification module penetrates through the partition plate, and airflow in the first cavity can flow into the second cavity through the communication opening and the purification module. According to the air purification device, the structure of the air purification device can be simplified, the loss of the purification module is reduced, and the diversified requirements of users are better met. The utility model further discloses the air conditioner.

Description

TECHNICAL FIELD

[0001] The present application relates to the air purification technical field, especially to an air purification device and an air conditioner. BACKGROUND

[0002] At present, the air purifier is widely used in the user's home life, the air purifier sets up the return air inlet and the air outlet, sets up the adsorption purification module between the return air inlet and the air outlet, the air in the indoor environment is inhaled through the return air inlet and flows through the adsorption purification module for purification, and then is blown out to the indoor environment along the air outlet, and meanwhile, the air circulation of the indoor environment can be promoted. However, the air purifier can only provide the purification function of indoor environment circulation, and cannot meet the user's demand.

[0003] In the related art, there is a new air purification machine, which comprises a shell, a new air duct, a dirty air duct and an internal circulation air duct. The new air duct comprises a new air inlet, a new air cavity, a new air passage, a new air fan and a new air outlet. The dirty air duct comprises a dirty air inlet, a dirty air passage, a dirty air exhaust fan, a dirty air exhaust cavity and a dirty air exhaust outlet, and a dirty air electric valve is arranged at the inlet of the dirty air exhaust cavity. The internal circulation air duct comprises an indoor return air inlet, an internal circulation passage, an internal circulation fan and an indoor exhaust air outlet, and a purification assembly is arranged in the internal circulation passage and the new air passage.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

[0005] The arrangement of the new air duct, the dirty air duct and the internal circulation air duct leads to a complex structure of the new air purification machine, and in the case that the new air or the indoor return air does not need to be purified, the wear of the purification assembly is increased, which cannot meet the diversified needs of the user.

[0006] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. Utility model content

[0007] In order to have a basic understanding of some aspects of the disclosed embodiments, the following is a simple summary. The summary is not a general review, nor is it intended to determine the key / important components or to delineate the protection scope of these embodiments, but as a prelude to the detailed description below.

[0008] The embodiments of the present disclosure provide an air purification device and an air conditioner to simplify the structure of the air purification device, reduce the wear of the purification module, and better meet the diversified needs of the user.

[0009] In some embodiments, the air purification device comprises a box body, a partition plate and a purification module. The box body is provided with a fresh air inlet, a first return air inlet and an exhaust air outlet. The partition plate is arranged in the box body to divide the box body into a first cavity and a second cavity. The partition plate is provided with a communication opening. The fresh air inlet and the first return air inlet are in communication with the first cavity. The exhaust air outlet is in communication with the second cavity. The purification module is arranged through the partition plate. Air flow in the first cavity can flow into the second cavity through the communication opening and the purification module.

[0010] Optionally, the air purification device further comprises a fan. The fan is arranged on the upper side of the box body. The air inlet end of the fan is in communication with the exhaust air outlet.

[0011] Optionally, the communication opening is composed of a plurality of first communication gaps. A first grille plate is arranged on the upper side of the communication opening. The first grille plate is movably arranged and can simultaneously block or open the plurality of first communication gaps.

[0012] Optionally, the fresh air inlet is internally provided with a sealing plate. The sealing plate is rotatably arranged and can open or close the fresh air inlet.

[0013] Optionally, the fresh air inlet is a circular opening structure. The sealing plate is a circular plate structure. The sealing plate is provided with a rotating shaft. The rotating shaft is arranged along the diameter of the sealing plate and the fresh air inlet. The two ends of the rotating shaft are rotatably connected to the inner walls of the two sides of the fresh air inlet.

[0014] Optionally, the first return air inlet is composed of a plurality of second communication gaps. A second grille plate is arranged on the outer side of the first return air inlet. The second grille plate is movably arranged and can simultaneously block or open the plurality of second communication gaps.

[0015] Optionally, the fresh air inlet and the first return air inlet are arranged on the same side wall of the box body. In the air inlet direction of the fresh air inlet and the first return air inlet, the communication opening is located on the windward side of the purification module.

[0016] Optionally, the purification module comprises a dust filtration part, an aldehyde removal part and an odor removal part.

[0017] Optionally, the dust filtration part, the aldehyde removal part and the odor removal part are arranged in sequence in the air flow direction.

[0018] In some embodiments, the air conditioner comprises the air purification device of any one of the above embodiments.

[0019] The air purification device and the air conditioner provided by the embodiments of the present disclosure can achieve the following technical effects:

[0020] The first cavity and the second cavity are separated by a partition plate arranged inside the cabinet, and a communication port is arranged on the partition plate, and the purification module penetrates the partition plate, in the case that the communication port is open, most of the airflow in the first cavity flows into the second cavity along the communication port, and in the case that the communication port is closed, the airflow in the first cavity flows into the second cavity along the purification module. In the case that the user needs to introduce fresh air and purify, the fresh air inlet is opened, and the first return air inlet and the communication port are closed, the fresh air flows into the first cavity from the fresh air inlet, flows into the second cavity along the purification module, and flows out along the exhaust air outlet. In the case that the user needs to introduce fresh air without purifying, the fresh air inlet and the communication port are opened, and the first return air inlet is closed, the fresh air flows into the first cavity from the fresh air inlet, and most of the fresh air flows into the second cavity along the communication port. In the case that the user needs to purify the indoor environment air, the fresh air inlet and the communication port are closed, and the first return air inlet is opened, the indoor air flows into the first cavity through the first return air inlet, and flows into the second cavity along the purification module. In the case that the user needs to promote the indoor environment air to circulate without purifying, the fresh air inlet is closed, and the first return air inlet and the communication port are opened, the indoor air flows into the first cavity through the first return air inlet, and most of the indoor air flows into the second cavity along the communication port. By opening and closing the fresh air inlet, the first return air inlet and the communication port, the multiple needs of the user, such as introducing fresh air and purifying, introducing fresh air without purifying, indoor air circulating and purifying, and indoor air circulating, can be met, the structure of the air purification device is simplified, the loss of the purification module is reduced, and the diversified needs of the user are better met.

[0021] The foregoing general description and the following description are only exemplary and explanatory, and are not used to limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0022] One or more embodiments are illustrated by way of example in the accompanying drawings that are not intended to be limiting of the embodiments. Like reference numbers in the drawings indicate like elements, and in which:

[0023] Figure 1 is a structural schematic diagram of an air purification device provided by an embodiment of the present disclosure;

[0024] Figure 2 is a structural schematic diagram of a fresh air inlet and a first return air inlet provided by an embodiment of the present disclosure;

[0025] Figure 3 is an enlarged schematic diagram of part A in Figure 1

[0026] Figure 4 is a structural schematic diagram of a purification module provided by an embodiment of the present disclosure;

[0027] Figure 5 ​is a structural schematic diagram of an air conditioner provided by an embodiment of the present disclosure;

[0028] Figure 6 is a structural schematic diagram of another air conditioner provided by an embodiment of the present disclosure;

[0029] Figure 7 is a structural schematic diagram of another air conditioner provided by an embodiment of the present disclosure.

[0030] Reference signs:

[0031] 100, cabinet; 110, fresh air inlet; 120, first return air inlet; 121, second communication gap; 130, air outlet; 140, first cavity; 150, second cavity; 160, sealing plate; 170, rotating shaft; 180, second grating plate; 200, partition plate; 210, communication port; 211, first communication gap; 220, first grating plate; 300, purification module; 310, dust filtering part; 320, formaldehyde removing part; 330, odor removing part; 400, fan; 500, first column shell; 510, second return air outlet; 520, second air outlet; 600, second column shell; 610, first air outlet; 620, wet curtain; 700, base; 710, mounting cavity; 800, water tank. DETAILED DESCRIPTION

[0032] In order to enable persons skilled in the art to more fully understand the features and technical contents of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure is described in detail below with reference to the accompanying drawings, which are used for reference only and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, a plurality of details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, in order to simplify the drawings, well-known structures and devices can be simplified.

[0033] The terms "first", "second", and the like in the specification and claims of the embodiments of the present disclosure and the above drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present disclosure described herein can be implemented. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0034] In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to indicating the orientation or positional relationship, the above-mentioned part of the terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0035] In addition, the terms "set", "connected", "fixed" should be broadly understood. For example, "connected" can be fixedly connected, detachably connected, or integrally configured; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0036] Unless otherwise specified, the term "a plurality of" means two or more.

[0037] It should be noted that the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0038] In combination with Figures 1-4 As shown in the drawings, in some embodiments, the air purification device comprises a box body 100, a partition plate 200 and a purification module 300. The side wall of the box body 100 is provided with a fresh air inlet 110, a first return air inlet 120 and an exhaust air outlet 130; the partition plate 200 is arranged inside the box body 100, which divides the inside of the box body 100 into a first cavity 140 and a second cavity 150, and the partition plate 200 is provided with a communication port 210. The fresh air inlet 110 and the first return air inlet 120 are both communicated with the first cavity 140, and the exhaust air outlet 130 is communicated with the second cavity 150; the purification module 300 is arranged through the partition plate 200, and the airflow in the first cavity 140 can flow into the second cavity 150 through the communication port 210 and the purification module 300.

[0039] The air purification device provided by the embodiment of the present disclosure is characterized in that: the first cavity 140 and the second cavity 150 are separated by the partition plate 200 arranged inside the box body 100, and the communication port 210 is arranged on the partition plate 200; the purification module 300 is arranged through the partition plate 200; when the communication port 210 is open, most of the airflow in the first cavity 140 flows into the second cavity 150 through the communication port 210; when the communication port 210 is closed, the airflow in the first cavity 140 flows into the second cavity 150 through the purification module 300. When the user needs to introduce fresh air and purify it, the fresh air inlet 110 is open, and the first return air inlet 120 and the communication port 210 are closed; the fresh air flows into the first cavity 140 through the fresh air inlet 110, flows into the second cavity 150 through the purification module 300, and flows out through the exhaust air outlet 130. When the user needs to introduce fresh air without purifying it, the fresh air inlet 110 and the communication port 210 are open, and the first return air inlet 120 is closed; the fresh air flows into the first cavity 140 through the fresh air inlet 110, and most of the fresh air flows into the second cavity 150 through the communication port 210. When the user needs to purify the indoor environment air, the fresh air inlet 110 and the communication port 210 are closed, and the first return air inlet 120 is open; the indoor air flows into the first cavity 140 through the first return air inlet 120, and flows into the second cavity 150 through the purification module 300. When the user needs to promote the circulation of the indoor environment air without purifying it, the fresh air inlet 110 is closed, and the first return air inlet 120 and the communication port 210 are open; the indoor air flows into the first cavity 140 through the first return air inlet 120, and most of the indoor air flows into the second cavity 150 through the communication port 210. By opening and closing the fresh air inlet 110, the first return air inlet 120 and the communication port 210, the user's needs for introducing fresh air and purifying it, introducing fresh air without purifying it, purifying the indoor environment air, and circulating the indoor environment air can be met, the structure of the air purification device is simplified, the loss of the purification module 300 is reduced, and the diversified needs of the user are better met.

[0040] Specifically, the fresh air inlet 110 is in communication with the outdoor environment, and the first return air inlet 120 is in communication with the indoor environment.

[0041] Optionally, the fresh air inlet 110 is in communication with the outdoor environment through a fresh air pipe. In this way, the fresh air in the outdoor environment flows to the fresh air inlet 110 through the fresh air pipe, and then flows into the first cavity 140 through the fresh air inlet 110.

[0042] Optionally, the air purification device further comprises a fan 400. The fan 400 is arranged on the upper side of the box 100, and the air inlet end of the fan 400 is communicated with the air outlet 130. In this way, the arrangement of the fan 400 can provide negative pressure, and the second cavity 150 generates negative pressure under the action of the fan 400, so that the airflow in the first cavity 140 flows into the second cavity 150, and the airflow in the second cavity 150 flows to the air outlet 130 under the action of the fan 400.

[0043] Optionally, the air outlet 130 is arranged on the upper side wall of the box 100, and the fan 400 is a centrifugal fan, and the air inlet end of the centrifugal fan is arranged towards the air outlet 130 and communicated with the air outlet 130. In this way, the centrifugal fan can provide larger negative pressure when it is running, so as to increase the air volume of the air purification device. The arrangement of the centrifugal fan can also reduce the thickness of the air purification device, facilitating the installation of the air purification device.

[0044] Optionally, the communication port 210 is composed of a plurality of first communication gaps 211, and a first grille plate 220 is arranged on the upper side of the communication port 210. The first grille plate 220 is movably arranged and can simultaneously block or open the plurality of first communication gaps 211. In this way, the communication port 210 is arranged in a port-shaped structure composed of a plurality of first communication gaps 211, and the first grille plate 220 is used to block or open the communication port 210. The first grille plate 220 can be blocked and opened in a small range of movement, which reduces the space occupied by the first grille plate 220 and facilitates the arrangement of the air treatment box inside the air conditioner shell.

[0045] For example, the driving mechanism of the first grille plate 220 is composed of a rack and a motor. The rack is connected with the first grille plate 220, and the output end of the motor is engaged with the rack through a gear. The rack is driven to move by the motor, so as to drive the first grille plate 220 to move.

[0046] Specifically, when the plurality of first communication gaps 211 are opened at the same time, the communication port 210 is opened, and when the plurality of first communication gaps 211 are blocked at the same time, the communication port 210 is closed.

[0047] Optionally, the fresh air inlet 110 is provided with a sealing plate 160. The sealing plate 160 is rotatably arranged and can open or close the fresh air inlet 110. In this way, the sealing plate 160 is arranged in the fresh air inlet 110, and the opening and closing of the fresh air inlet 110 are realized by rotating the sealing plate 160, which reduces the occupied space of the sealing plate 160 and facilitates the arrangement of the air treatment box inside the air conditioner shell.

[0048] Optionally, the fresh air outlet 110 is a circular opening structure, and the sealing plate 160 is a circular plate structure, and the sealing plate 160 is provided with a rotating shaft 170 arranged along the diameter of the sealing plate 160 and the fresh air outlet 110, and the two ends of the rotating shaft 170 are rotatably connected with the two side inner walls of the fresh air outlet 110. In this way, the sealing plate 160 only needs to be rotated by 90° when opening or closing the fresh air outlet 110, thereby reducing the rotation angle of the sealing plate 160, and the sealing plate 160 can realize the opening and closing of the fresh air outlet 110 by rotating a relatively small angle, thereby reducing the space required for the rotation of the sealing plate 160, and further reducing the space occupied by the sealing plate 160.

[0049] Optionally, the sealing plate 160 is driven by a motor, and the motor is arranged on the outer side wall of the fresh air outlet 110, and the output shaft of the motor is fixedly connected with the end of the rotating shaft 170. In this way, the rotation of the sealing plate 160 is driven by the motor, thereby improving the rotation stability of the sealing plate 160.

[0050] Optionally, the first return air outlet 120 is composed of a plurality of second communication gaps 121, and the outer side cover of the first return air outlet 120 is provided with a second grille plate 180, and the second grille plate 180 is movably arranged and can simultaneously block or open the plurality of second communication gaps 121. In this way, the first return air outlet 120 is arranged in a port-like structure composed of a plurality of second communication gaps 121, and the second grille plate 180 is used to block or open the first return air outlet 120, which can realize the blocking and opening of the first return air outlet 120 in a small movement range of the second grille plate 180, thereby reducing the space occupied by the movement of the second grille plate 180 and facilitating the arrangement of the air treatment box in the air conditioner shell.

[0051] It can be understood that the driving mechanism of the second grille plate 180 is the same as that of the first grille plate 220, which will not be described here.

[0052] Specifically, when the plurality of second communication gaps 121 are simultaneously opened, the first return air outlet 120 is opened, and when the plurality of second communication gaps 121 are simultaneously blocked, the first return air outlet 120 is closed.

[0053] Optionally, the fresh air inlet 110 and the first return air inlet 120 are arranged on the same side wall of the cabinet 100, and the communication port 210 is located on the windward side of the purification module 300 in the air inlet direction of the fresh air inlet 110 and the first return air inlet 120. In this way, when the communication port 210 is opened, the air flow flowing into the first cavity 140 through the fresh air inlet 110 or the first return air inlet 120 can preferentially flow into the second cavity 150 through the communication port 210, and when the air flow does not need to be purified, the air flow flowing into the second cavity 150 from the purification module 300 is reduced, so that most of the air flow in the first cavity 140 can flow to the second cavity 150 through the communication port, and the loss of the purification module 300 is reduced.

[0054] Optionally, the fresh air inlet 110 and the first return air inlet 120 are arranged in the lower region of the same vertical side wall of the cabinet 100. In this way, since the exhaust air outlet 130 is arranged on the upper side wall of the cabinet 100, the fresh air inlet 110 and the first return air inlet 120 are arranged in the lower region of the same vertical side wall of the cabinet 100, so that the air flow flowing into the first cavity 140 through the fresh air inlet 110 and the first return air inlet 120 flows into the second cavity 150 from bottom to top.

[0055] Optionally, the purification module 300 includes a dust filtration part 310, an aldehyde removal part 320, and a deodorization part 330. In this way, the purification module 300 can perform dust filtration, aldehyde removal, and deodorization on the air flow flowing therethrough, thereby improving the purification effect of the air flow and improving the air quality of the indoor environment.

[0056] Optionally, the dust filtration part 310, the aldehyde removal part 320, and the deodorization part 330 are arranged in sequence in the air flow direction. In this way, the air flow flowing through the purification module 300 is first subjected to dust filtration, and then subjected to aldehyde removal and deodorization, thereby reducing the risk of dust in the air flow clogging the aldehyde removal part 320 and the deodorization part 330, and reducing the loss of the aldehyde removal part 320 and the deodorization part 330.

[0057] In combination Figures 5-7 As shown in some embodiments, the air conditioner includes the air purification device of any of the above embodiments.

[0058] The air conditioner provided by the embodiments of the present disclosure simplifies the structure of the air purification device, reduces the loss of the purification module 300, and better meets the diversified needs of users.

[0059] Optionally, the air conditioner further comprises a first column shell 500, a second column shell 600 and a base 700. The first column shell 500 defines a heat exchange flow channel inside, and the side wall of the first column shell 500 is provided with a second return air outlet 510 and a second air outlet 520; the side wall of the second column shell 600 is provided with a first air outlet 610, and the inside of the second column shell 600 is provided with a wet curtain 620 which covers the first air outlet 610; the inside of the base 700 defines a mounting cavity 710, and the air purification device is arranged in the mounting cavity 710, and the air outlet end of the fan 400 of the air purification device is in communication with the inside of the second column shell 600. In this way, the air conditioner comprises the first column shell 500, the second column shell 600 and the base 700, the heat exchange flow channel is defined inside the first column shell 500, the wet curtain 620 is arranged inside the second column shell 600, the mounting cavity 710 is defined inside the base 700, and the air purification device is arranged in the mounting cavity 710, and the purified air flow and the non-purified air flow of the air purification device both flow into the second column shell 600. The air purification device and the wet curtain 620 cooperate to process the air, and the heat exchange flow channel adjusts the temperature of the indoor return air. The first column shell 500 and the second column shell 600 are both independently arranged on the upper side of the base 700, and the air flows blown out of the first column shell 500 and the second column shell 600 do not interfere with each other, thereby improving the indoor air quality while reducing the influence of air processing on the heat exchange air supply effect and improving the air supply distance.

[0060] Specifically, the air outlet end of the fan 400 of the air purification device is in communication with the first air outlet 610 through the inside of the second column shell 600.

[0061] Optionally, the first air outlet 610 and the second air outlet 520 are respectively arranged in the side wall of the same side of the first column shell 500 and the second column shell 600. In this way, the air flow blown out of the first air outlet 610 and the heat exchange air flow blown out of the second air outlet 520 can be blown out in the same direction, and the two can be mixed to improve the air mixing effect and thus improve the air supply effect.

[0062] Optionally, the wet curtain 620 is movably arranged in the second column shell 600, and the wet curtain 620 can be moved to a position covering the first air outlet 610 or opening the first air outlet 610. In this way, the air flow blown out of the first air outlet 610 can be humidified by moving the wet curtain 620 to cover or open the first air outlet 610. The indoor air quality is improved, and the air processing demand of the user is flexibly met.

[0063] It can be understood that the wet curtain 620 being moved to the position opening the first air outlet 610 means that the wet curtain 620 no longer covers the first air outlet 610, rather than the first air outlet 610 being in a closed state before the wet curtain 620 is moved. The opening and closing of the first air outlet 610 is related to the panel arranged on the shell, and the opening and closing state of the first air outlet 610 is controlled by moving the panel.

[0064] Optionally, the air conditioner further comprises a water tank 800. The water tank 800 is arranged in the second column shell 600 and above the wet curtain 620, and is used to supply water to the wet curtain 620. In this way, the wet curtain 620 is continuously wetted by the water tank 800, and when the wet curtain 620 moves to the position of shielding the first air outlet 610, the airflow blown out through the first air outlet 610 accelerates the evaporation of moisture of the wet curtain 620, thereby improving the humidifying effect. The water tank 800 is arranged above the wet curtain 620, and the water in the water tank 800 is naturally dripped onto the wet curtain 620 by gravity, without the need to arrange a water pump or the like structure, thereby reducing the cost.

[0065] Optionally, a side wall of the second column shell 600 is provided with an access hole corresponding to the position of the water tank 800, and the access hole is provided with a detachable panel. In this way, the water tank 800 can be maintained through the access hole by detaching the panel, without the need to disassemble the water tank 800, thereby improving the maintenance efficiency of the water tank 800.

[0066] The above description and drawings sufficiently illustrate the embodiments of the present disclosure to enable one skilled in the art to practice them. Other embodiments can include structural and other changes. The embodiments are merely representative of the possible variations. Individual components and functions are optional unless explicitly required, and the order of operations can be changed. Parts and features of some embodiments can be included in or replace parts and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An air purification device, characterized by, The air purification device comprises a box body (100), a new air inlet (110), a first return air inlet (120) and an exhaust air outlet (130) are arranged on the side wall of the box body (100); a partition plate (200) is arranged in the box body (100), and the box body (100) is divided into a first cavity (140) and a second cavity (150); a communication opening (210) is arranged on the partition plate (200); the new air inlet (110) and the first return air inlet (120) are communicated with the first cavity (140); and the exhaust air outlet (130) is communicated with the second cavity (150). Further comprising: a fan (400) is arranged on the upper side of the box body (100), and the air inlet end of the fan (400) is communicated with the exhaust air outlet (130).

3. The air purification device according to claim 1, wherein the communication opening (210) is composed of a plurality of first communication gaps (211), and a first grille plate (220) is arranged on the upper side of the communication opening (210); the first grille plate (220) is movably arranged and can simultaneously block or open the plurality of first communication gaps (211).

2. The air purification device of claim 1, wherein, 4. The air purification device according to claim 1, wherein a sealing plate (160) is arranged in the new air inlet (110), and the sealing plate (160) is rotatably arranged and can open or close the new air inlet (110).

5. The air purification device according to claim 4, wherein the new air inlet (110) is a circular opening structure, the sealing plate (160) is a circular plate structure, a rotating shaft (170) is arranged on the sealing plate (160), the rotating shaft (170) is arranged along the diameter of the sealing plate (160) and the new air inlet (110), and the two ends of the rotating shaft (170) are rotatably connected with the inner walls of the two sides of the new air inlet (110).

6. The air purification device according to claim 1, wherein the first return air inlet (120) is composed of a plurality of second communication gaps (121), and a second grille plate (180) is arranged on the outer side of the first return air inlet (120); the second grille plate (180) is movably arranged and can simultaneously block or open the plurality of second communication gaps (121).

7. The air purification device according to any one of claims 1 to 6, wherein the new air inlet (110) and the first return air inlet (120) are arranged on the same side wall of the box body (100), and the communication opening (210) is located on the windward side of the purification module (300) along the air inlet direction of the new air inlet (110) and the first return air inlet (120). The purification module (300) comprises: a dust filtration part (310), an aldehyde removal part (320) and an odor removal part (330).

9. The air purification device according to claim 8, wherein the dust filtration part (310), the aldehyde removal part (320) and the odor removal part (330) are arranged in sequence along the air flow direction. ​ ​ ​ ​ ​ 8. The air purification device according to any one of claims 1 to 6, characterized in that ​ ​ ​ ​ 10. An air conditioner characterized by comprising: ​ An air purification device as claimed in any one of claims 1 to 9.

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