CN215597692U - Air duct switching device for water purification module, water purification module and air conditioner - Google Patents

Abstract

The application relates to the technical field of air conditioning equipment, and discloses an air channel switching device for a water purification module, which comprises: the top wall of the outer shell is provided with an air outlet, and the circumferential direction of the side wall of the outer shell is provided with a first air inlet and a second air inlet at intervals; the inner shell is nested in the outer shell, a matched inner air outlet is formed in the position corresponding to the outer air outlet, and a first opening matched with the first air inlet and a second opening matched with the second air inlet are formed in the side wall of the inner shell; the inner shell can rotate along the circumferential direction of the side wall of the outer shell relative to the outer shell, and a plurality of working positions for opening and closing the first air inlet and/or the second air inlet are formed in the inner shell during rotation; and the driving piece is in driving connection with the inner shell and is used for driving the inner shell to rotate so as to realize the switching between the working positions. The embodiment of the disclosure can realize the switching of different air inlet modes, so that the air inlet of the air conditioner is more flexible, and the comfort and the experience of a user are improved. The application also discloses a water purification module and an air conditioner.

Description

Air duct switching device for water purification module, water purification module and air conditioner

Technical Field

The application relates to the technical field of air conditioning equipment, for example to an air duct switching device for a water purification module, the water purification module and an air conditioner.

Background

At present, due to the improvement of living standard, the air conditioner is widely used, along with the continuous improvement of air quality requirements and continuous innovation of technology of users, the air conditioner with the water purification function gradually appears in the market, and the air is purified and humidified through the contact of air and water, so that the quality of the air is improved. However, the air flow circulating inside the air conditioner is indoor, and under long-time operation, fresh oxygen is lacked, and indoor air is easily polluted, which greatly affects the use experience and health of users. If install new trend system, not only increase user's cost, still can influence the user to the overall arrangement in space, very inconvenient.

SUMMERY OF THE UTILITY MODEL

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides an air channel switching device for a water purification module, the water purification module and an air conditioner, so that different air inlet modes can be switched, and the experience of user use is improved.

In some embodiments, the air duct switching device for a water purification module comprises: the top wall of the outer shell is provided with an air outlet, and the circumferential direction of the side wall of the outer shell is provided with a first air inlet and a second air inlet at intervals; the inner shell is nested in the outer shell, a matched inner air outlet is formed in the position corresponding to the outer air outlet, and a first opening matched with the first air inlet and a second opening matched with the second air inlet are formed in the side wall of the inner shell; the inner shell can rotate along the circumferential direction of the side wall of the outer shell relative to the outer shell, and a plurality of working positions for opening and closing the first air inlet and/or the second air inlet are formed in the inner shell during rotation; and the driving piece is in driving connection with the inner shell and is used for driving the inner shell to rotate so as to realize the switching between the working positions.

In some embodiments, the working position includes one or more of:

in the first position, the first opening and the first air inlet are completely overlapped, and the second opening and the second air inlet are not overlapped;

in the second position, the second opening and the second air inlet are completely overlapped, and the first opening and the first air inlet are not overlapped;

in the third position, the first opening is partially overlapped with the first air inlet, and the second opening is partially overlapped with the second air inlet;

in the fourth position, the first opening and the first air inlet do not overlap, and the second opening and the second air inlet do not overlap.

In some embodiments, when the inner housing rotates to the first position, the first air inlet and the first opening are disposed correspondingly, and the second air inlet and the second opening are disposed in a staggered manner.

In some embodiments, the first air inlet and/or the second air inlet is provided with a grille or a filter screen.

In some embodiments, the first air inlet has a polygonal structure or a fan-shaped structure, and the second air inlet has a rectangular structure or a circular structure.

In some embodiments, the outer housing and the inner housing are cylindrical housings and are coaxially arranged.

In some embodiments, the driving member is a driving motor, and an output shaft of the driving motor is connected to the axis of the bottom wall of the inner shell.

In some embodiments, the inner wall of the outer shell is provided with a step portion extending along the circumferential direction thereof, the outer wall of the inner shell is provided with a lap portion capable of being lapped on the step portion, and when the inner shell rotates relative to the outer shell, the lap portion can move along the step portion.

In some embodiments, the water purification module comprises: a purifying housing provided with an air inlet; according to the air channel switching device for the water purification module provided by any one of the embodiments, the outer air outlet and the inner air outlet of the air channel switching device are communicated with the air inlet; and the fan is arranged between the air outlet and the air inlet.

In some embodiments, the air conditioner includes: the water purification module provided by the foregoing embodiment further includes an air conditioner case, which is provided with an indoor air inlet and a fresh air inlet, the indoor air inlet is communicated with the first air inlet of the air duct switching device, and the fresh air inlet is communicated with the second air inlet of the air duct switching device.

The air channel switching device for the water purification module, the water purification module and the air conditioner provided by the embodiment of the disclosure can realize the following technical effects:

through the rotation of ordering about interior casing, interior casing is rotatable to making first opening and first air intake complex position so that first air intake and air outlet are linked together, and/or, interior casing is rotatable to making second air intake and second opening complex position so that second air intake and air outlet are linked together to realize the switching of different air inlet modes, make the air inlet of air conditioner more nimble, improved user's travelling comfort and experience and felt.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:

fig. 1 is a schematic structural diagram of an air duct switching device for a water purification module according to an embodiment of the present disclosure;

fig. 2 is an exploded schematic view of an air duct switching device for a water purification module according to an embodiment of the present disclosure;

fig. 3 is a schematic diagram of an operating position of an air duct switching device for a water purification module provided by an embodiment of the present disclosure in a first position;

FIG. 4 is a schematic diagram of an operating position of an air duct switching device for a water purification module provided by an embodiment of the present disclosure in a second position;

fig. 5 is a schematic diagram of an operating position of an air duct switching device for a water purification module provided by the embodiment of the disclosure in a third position;

fig. 6 is a schematic diagram of an operating position of an air duct switching device for a water purification module provided by the embodiment of the disclosure in a fourth position;

FIG. 7 is a schematic diagram of a water purification module according to an embodiment of the present disclosure;

fig. 8 is a schematic diagram illustrating a first view of an air conditioner according to an embodiment of the present disclosure;

fig. 9 is a schematic structural diagram of a second perspective view of an air conditioner according to an embodiment of the present disclosure;

fig. 10 is a schematic view of a partial structure of an air conditioner according to an embodiment of the present disclosure.

Reference numerals:

100. an outer housing;

110. an air outlet; 120. a first air inlet; 130. a second air inlet; 140. a step portion;

200. an inner housing;

210. an inner air outlet; 220. a first opening; 230. a second opening; 240. a lap joint section;

300. a drive member;

500. purifying the shell;

600. a fan;

700. an air conditioner housing;

710. an indoor air inlet; 720. a fresh air inlet; 721. a fresh air pipeline.

Detailed Description

So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.

The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the disclosed embodiments and their examples and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation. Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art as appropriate.

In addition, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. Specific meanings of the above terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art according to specific situations.

The term "plurality" means two or more unless otherwise specified.

In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

Fig. 1 is a schematic structural diagram of an air duct switching device for a water purification module according to an embodiment of the present disclosure; fig. 2 is an exploded schematic view of an air duct switching device for a water purification module according to an embodiment of the present disclosure. Referring to fig. 1 and 2, an embodiment of the present disclosure provides an air duct switching device for a water purification module, including an outer housing 100, an inner housing 200, and a driving member 300. The top wall of the outer casing 100 is configured with an outer air outlet 110, and the side wall of the outer casing 100 is provided with a first air inlet 120 and a second air inlet 130 at intervals along the circumferential direction. The inner housing 200 is nested in the outer housing 100, and a matching inner air outlet 210 is disposed at a position corresponding to the outer air outlet 110, and a first opening 220 matching with the first air inlet 120 and a second opening 230 matching with the second air inlet 130 are disposed on a side wall of the inner housing 200. The inner housing 200 is rotatable relative to the outer housing 100 along the circumferential direction of the sidewall of the outer housing 100, and has a plurality of working positions for opening and closing the first intake vent 120 and/or the second intake vent 130. The driving member 300 is drivingly connected to the inner housing 200 for driving rotation of the inner housing 200 to effect switching of the inner housing 200 between the plurality of operating positions.

The inner housing 200 can be rotated relative to the outer housing 100 by the driving member 300, and the inner housing 200 can be rotated to a position where the first opening 220 is engaged with the first air inlet 120 and/or rotated to a position where the second opening 230 is engaged with the second air inlet 130. Since the inner housing 200 has a plurality of working positions for opening and closing the first intake vent 120 and/or the second intake vent 130, the inner housing 200 is driven by the driving member 300 to rotate, so as to switch the inner housing 200 between the plurality of working positions. Optionally, the first air inlet 120 can be connected with indoor circulating air, the second air inlet 130 can be connected with outdoor fresh air, and the first air inlet 120 and/or the second air inlet 130 can be opened and closed through outdoor rotation of the inner shell 200, so that switching of different air inlet modes is realized, air inlet of the air conditioner is more flexible, and comfort and experience of a user are improved.

Optionally, the inner housing 200 and the outer housing 100 are nested, with the inner housing 200 being located inside the outer housing 100.

Optionally, one first air inlet 120 is provided, and one first opening 220 is provided corresponding to the first air inlet 120. Or the first air inlet 120 is provided with a plurality of first openings 220, and the number of the first openings is the same as that of the first air inlet 120. Alternatively, the number of the first air inlets 120 may be set according to actual needs. Optionally, the plurality of first air intakes 120 may be arranged at equal intervals or at unequal intervals, and the arrangement manner of the plurality of first openings 220 is adaptively adjusted according to the arrangement position/manner of the plurality of first air intakes 120, so as to achieve the matching of the first openings 220 and the first air intakes 120.

Optionally, one second air inlet 130 is provided, and one second opening 230 is provided corresponding to the second air inlet 130. Optionally, the distance between the second air inlet 130 and the first air inlet 120 is greater than the distance between the second opening 230 and the first opening 220 corresponding to the first air inlet 120. Alternatively, the number of the second air inlets 130 may be set according to actual needs.

Adopt the wind channel auto-change over device for water purification module that this disclosed embodiment provided, through the rotation of ordering about interior casing, interior casing is rotatable to making first opening and first air intake matched with position so that first air intake and air outlet are linked together, and/or, interior casing is rotatable to making second air intake and second opening matched with position so that second air intake and air outlet are linked together, thereby realize the switching of different air inlet modes, the air inlet that makes the air conditioner is more nimble, user's travelling comfort and experience sense have been improved.

Fig. 3 is a schematic diagram of an operating position of an air duct switching device for a water purification module provided by an embodiment of the present disclosure in a first position; FIG. 4 is a schematic diagram of an operating position of an air duct switching device for a water purification module provided by an embodiment of the present disclosure in a second position; fig. 5 is a schematic diagram of an operating position of an air duct switching device for a water purification module provided by the embodiment of the disclosure in a third position;

fig. 6 is a schematic diagram of an operating position of an air channel switching device for a water purification module provided by the embodiment of the disclosure in a fourth position. Referring to fig. 3 to 6, in some embodiments, the plurality of working positions of the inner housing 200 having the opening and closing of the first intake vent 120 and/or the second intake vent 130 include one or more of the following first position, second position, third position, and fourth position. With the operating position of the inner housing 200 in the first position, the first opening 220 and the first intake vent 120 are completely coincident, and the second opening 230 and the second intake vent 130 are not coincident. Thus, the first intake vent 120 can be opened, and the second intake vent 130 can be closed, so that the first intake vent 120 is communicated with the outer intake vent 110 and the inner intake vent 210, that is, the air is supplied from the first intake vent 120. In the second position of the working position, the second opening 230 and the second intake vent 130 are completely coincident, and the first opening 220 and the first intake vent 120 are not coincident. Thus, the second intake vent 130 can be opened and the first intake vent 120 can be closed, so that the second intake vent 130 is communicated with the outer intake vent 110 and the inner intake vent 210, that is, the air is supplied from the second intake vent 130. With the operating position in the third position, the first opening 220 and the first intake vent 120 partially overlap, and the second opening 230 and the second intake vent 130 partially overlap. Thus, a portion of the first intake vent 120 and a portion of the second intake vent 130 can be opened, so that the first intake vent 120 and the second intake vent 130 are simultaneously communicated with the outer intake vent 110 and the inner intake vent 210, that is, the first intake vent 120 and the second intake vent 130 intake air. With the operating position in the fourth position, the first intake vent 120 and the first opening 220 do not overlap, and the second intake vent 130 and the second opening 230 do not overlap. Thus, the first intake vent 120 and the second intake vent may be closed at the same time.

By driving the inner housing 200 to switch between different working positions, the first intake vent 120 can be opened, the second intake vent 130 can be closed, or the second intake vent 130 can be opened, the first intake vent 120 can be closed, or a part of the first intake vent 120 and a part of the second intake vent 130 can be opened simultaneously, or the first intake vent 120 and the second intake vent 130 can be closed simultaneously. Like this, thereby realize the switching of different air inlet modes, make the air inlet of air conditioner more nimble, improved user's travelling comfort and experience sense.

Optionally, indoor circulating air can be connected to first air intake 120, new trend can be connected to second air intake 130, through ordering about the switching of interior casing 200 at different operating position, can use the wind channel auto-change over device who uses for water purification module to realize carrying indoor circulating air, or carry the new trend, or realize carrying indoor circulating air and new trend simultaneously to realize the switching of different air inlet modes, make the air inlet of air conditioner more nimble, improved user's travelling comfort and experience and feel.

In some embodiments, when the inner housing 200 rotates to the first position, the first air inlet 120 and the first opening 220 are disposed correspondingly, and the second air inlet 130 and the second opening 230 are disposed in a staggered manner. Thus, when the inner housing 200 rotates to the first position, the first air inlet 120 coincides with the first opening, and the second air inlet 130 and the second opening 230 are blocked, so that the first air inlet 120 is opened and the second air inlet 130 is closed. Similarly, in this embodiment, when the inner housing 200 rotates to the second position, the first air inlet 120 and the first opening 220 are disposed in a staggered manner, and the second air inlet 130 and the second opening 230 are disposed correspondingly, so that the opening of the second air inlet 130 and the closing of the first air inlet 120 are realized when the inner housing 200 rotates to the second position. Therefore, the air inlet mode of the air channel switching device for the water purification module is more flexible.

In some embodiments, the first intake vent 120 and/or the second intake vent 130 are provided with a grill or filter. Through the arrangement of the grille or the filter screen, the filtering of the airflow flowing through the first air inlet 120 and/or the second air inlet 130 can be realized, so that impurities in the airflow are removed, the impurities are prevented from entering or being accumulated, and the flowing cleanliness and smoothness of the airflow are improved.

Optionally, the air permeability R of the filter screen is more than or equal to 5000 mm/s. Considering the influence of the mesh structure of the filter screen on the air inlet speed, the wind resistance of the mesh structure of the filter screen is less than or equal to 10, which is optimal.

In some embodiments, the first intake vent 120 has a polygonal structure or a fan-shaped structure, and the second intake vent 130 has a rectangular structure or a circular structure.

Alternatively, the first intake vent 120 and the first opening 220 may have the same shape and size, and the second intake vent 130 and the second opening 230 may have the same shape and size. Therefore, when the first intake vent 120 is opened and the second intake vent 130 is closed, the first intake vent 120 and the first opening 220 are completely overlapped, and when the first intake vent 120 is closed and the second intake vent 130 is opened, the second intake vent 130 and the second opening 230 are completely overlapped. Alternatively, in addition to being identical in shape and size, the manner of completely overlapping may also mean that one is completely encompassed by the other.

Optionally, the first intake vent 120 and the first opening 220 may have different shapes and/or sizes, and the second intake vent 130 and the second opening 230 may have different shapes and/or sizes. At this time, when the first intake vent 120 is opened and the second intake vent 130 is closed, the first intake vent 120 and the first opening 220 may be partially overlapped, and when the first intake vent 120 is closed and the second intake vent 130 is opened, the second intake vent 130 and the second opening 230 may also be partially overlapped. As long as it is ensured that the first intake vent 120 or the second intake vent 130 can be opened to allow intake air.

In some embodiments, the outer housing 100 and the inner housing 200 are cylindrical housings and are coaxially disposed.

Alternatively, the outer housing 100 is sleeved outside the inner housing 200, and the outer housing 100 and the inner housing 200 are provided as cylindrical housings and coaxially provided. In this way, the driving member 300 facilitates the rotation of the inner housing 200, so that the outer housing 100 and the inner housing 200 are more compact, and the entire inner housing 200 can be driven to rotate by the driving member.

In some embodiments, the driving member 300 is a driving motor, and the output shaft thereof is connected to the bottom wall of the inner housing 200 at the axial center.

Alternatively, the driving member 300 is a driving motor fixedly disposed on the outer sidewall of the outer housing 100, and an output shaft of the driving motor can pass through the axial center of the outer housing and is connected to the axial center of the bottom wall of the inner housing 200. Thus, when the driving shaft of the driving motor rotates, the inner housing 200 can be rotated relative to the outer housing 100.

In some embodiments, the inner wall of the outer case 100 is provided with a step portion 140 extending along a circumferential direction thereof, the outer wall of the inner case 200 is provided with a bridge portion 240 capable of being bridged on the step portion, and the bridge portion 240 is capable of moving along the step portion 140 when the inner case 200 is rotated with respect to the outer case 100. Thus, the stability of the rotation of the inner case 200 may be improved.

Fig. 7 is a schematic structural diagram of a water purification module provided in an embodiment of the present disclosure. As shown in fig. 7, an embodiment of the present disclosure provides a water purification module including a purification case 500, an air duct switching device for the water purification module, and a blower 600. An air inlet is provided on the purification case 500. The air outlet and the air outlet of the air channel switching device for the water purification module provided by any one of the embodiments are communicated with the air inlet of the purification shell. And a fan 600 disposed between the air outlet 110 and the air inlet.

Alternatively, the water purification module may adopt the prior art, for example, a rotating wheel water purification module, or a water purification module which forms a water curtain in a spraying manner, and the air is washed and purified by the water purification module to remove dust and impurities in the air.

Fig. 8 is a schematic diagram illustrating a first view of an air conditioner according to an embodiment of the present disclosure; fig. 9 is a schematic structural diagram of a second perspective view of an air conditioner according to an embodiment of the present disclosure; fig. 10 is a schematic view of a partial structure of an air conditioner according to an embodiment of the present disclosure. Referring to fig. 8, 9 and 10, an embodiment of the present disclosure provides an air conditioner, which includes a water purification module provided in the foregoing embodiment, and further includes an air conditioner case 700, where the air conditioner case 700 is provided with an indoor air inlet 710 and a fresh air inlet 720, the indoor air inlet 710 is communicated with the first air inlet 120 of the air channel switching device for the water purification module, and the fresh air inlet 720 is communicated with the second air inlet 130 of the air channel switching device for the water purification module.

Optionally, by communicating the indoor air inlet 710 with the first air inlet 120 of the air duct switching device for the water purification module and communicating the fresh air inlet 720 with the second air inlet 130 of the air duct switching device for the water purification module, different air supply modes of the air conditioner can be realized, and the diversification of the air supply modes of the air conditioner is improved.

The different air supply modes comprise:

indoor wind blowing mode: the operation position of the inner housing 200 of the air duct switching device for the water purification module is in the first position, in which the first opening 220 and the first air inlet 120 are completely overlapped, and the second opening 230 and the second air inlet 130 are not overlapped. That is, the first air inlet 120 is opened, the second air inlet 130 is closed, and the first air inlet 120 is communicated with the indoor air inlet 710, so as to realize the indoor air supply mode of the air conditioner.

Fresh air supply mode: the operating position of the inner housing 200 of the air duct switching device for the water purification module is in the second position, in which the second opening 230 and the second air inlet 130 are completely overlapped, and the first opening 220 and the first air inlet 120 are not overlapped. That is, the second air inlet 130 is opened, the first air inlet 120 is closed, and the second air inlet 130 is communicated with the fresh air inlet 720, so as to realize the fresh air supply mode of the air conditioner.

And (3) mixed air supply mode: the operating position of the inner housing 200 of the air duct switching device for the water purification module is in the third position where the first opening 220 and the first intake vent 120 are partially overlapped and the second opening 230 and the second intake vent 130 are partially overlapped. That is, a part of the first air inlet 120 is opened, and a part of the second air inlet 130 is opened, the first air inlet 120 may be communicated with the indoor air inlet 710, and the second air inlet 130 may also be communicated with the fresh air inlet 720, so as to implement a mixed air supply mode of the air conditioner.

Optionally, the fresh air inlet 720 is communicated with the second air inlet 130 of the air duct switching device for the water purification module through a fresh air duct 721.

Optionally, the air after passing through the water washing module can be continuously conveyed to a heat exchanger of the air conditioner, and is discharged indoors after heat exchange of the heat exchanger, so that air with appropriate temperature, humidity and cleanliness can be obtained indoors.

The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. An air duct switching device for a water purification module, comprising:

the top wall of the outer shell is provided with an air outlet, and the circumferential direction of the side wall of the outer shell is provided with a first air inlet and a second air inlet at intervals;

the inner shell is nested in the outer shell, a matched inner air outlet is formed in the position corresponding to the outer air outlet, and a first opening matched with the first air inlet and a second opening matched with the second air inlet are formed in the side wall of the inner shell; the inner shell can rotate along the circumferential direction of the side wall of the outer shell relative to the outer shell, and a plurality of working positions for opening and closing the first air inlet and/or the second air inlet are formed in the rotation process;

and the driving piece is in driving connection with the inner shell and is used for driving the inner shell to rotate so as to realize the switching of the inner shell between a plurality of working positions.

2. The air duct switching device according to claim 1, wherein the working position includes one or more of:

in the first position, the first opening and the first air inlet are completely overlapped, and the second opening and the second air inlet are not overlapped;

in the second position, the second opening and the second air inlet are completely overlapped, and the first opening and the first air inlet are not overlapped;

a third position in which the first opening and the first intake vent partially overlap, and the second opening and the second intake vent partially overlap;

in a fourth position, the first opening and the first air inlet do not overlap, and the second opening and the second air inlet do not overlap.

3. The air duct switching device according to claim 2, wherein when the inner housing rotates to the first position, the first air inlet and the first opening are disposed correspondingly, and the second air inlet and the second opening are disposed in a staggered manner.

4. The air duct switching device according to claim 1,

the first air inlet and/or the second air inlet are/is provided with a grid or a filter screen.

5. The air duct switching device according to claim 1, wherein the first air inlet has a polygonal structure or a fan-shaped structure, and the second air inlet has a rectangular structure or a circular structure.

6. The air duct switching device according to claim 1, wherein the outer housing and the inner housing are cylindrical housings and are coaxially disposed.

7. The device of claim 6, wherein the driving member is a driving motor, and an output shaft of the driving motor is connected to a center of the bottom wall of the inner housing.

8. The air duct switching device according to claim 7, wherein an inner wall of the outer casing is provided with a step portion extending along a circumferential direction thereof, and an outer wall of the inner casing is provided with a lap portion capable of being lapped on the step portion, the lap portion being movable along the step portion when the inner casing is rotated relative to the outer casing.

9. A water purification module, comprising:

a purifying housing provided with an air inlet;

the air duct switching device for a water purification module as claimed in any one of claims 1 to 8, wherein an outer air outlet and an inner air outlet of the air duct switching device are communicated with the air inlet;

and the fan is arranged between the air outlet and the air inlet.

10. An air conditioner, comprising the water purification module of claim 9, and further comprising an air conditioner housing having an indoor air inlet and a fresh air inlet, wherein the indoor air inlet is communicated with the first air inlet of the air duct switching device, and the fresh air inlet is communicated with the second air inlet of the air duct switching device.

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