CN219974913U - Fan - Google Patents

Abstract

The application discloses a fan, belongs to the technical field of household appliances, and aims to solve the technical problem that the service life of the existing fan is limited. The fan includes: the air conditioner comprises a shell, an air outlet fan and a sliding door, wherein the shell is provided with a first air channel, a second air channel, a first air inlet and a first air outlet, the first air channel is communicated with the second air channel, the first air inlet is communicated with the first air channel, and the first air outlet is communicated with the second air channel; the air outlet fan is arranged in the second air duct and used for blowing out the air entering the second air duct from the first air outlet; the sliding door is in sliding connection with the shell so as to open or close the first air outlet. When the fan is turned off, the sliding door is closed, so that the first air outlet is closed, external impurities are prevented from entering the shell, and the service life of the fan is prolonged.

Description

Fan

Technical Field

The application belongs to the technical field of household appliances, and particularly relates to a fan.

Background

The fan is widely applied to daily life, and the fan mainly sucks air and does work through fan rotation and then blows out, so that the function of blowing is achieved, the requirements of target users on the fan are higher and higher, the fan is required to meet the function of blowing, the fan is required to have the adjusting functions of humidifying, heating or filtering and the like, and after the air enters the fan, the air is firstly adjusted through the air flow adjusting component and then blown out. If the air outlet is opened when the fan does not work, the air outlet of most fans is larger or external impurities can enter the fan through the air outlet, so that internal components are blocked.

Disclosure of Invention

The utility model aims to at least solve the technical problem that the fan can close the air outlet to a certain extent. To this end, the present utility model provides a fan.

In a first aspect, an embodiment of the present utility model provides a fan, including:

the shell is provided with a first air channel, a second air channel, a first air inlet and a first air outlet, wherein the first air channel is communicated with the second air channel, the first air inlet is communicated with the first air channel, and the first air outlet is communicated with the second air channel;

the air outlet fan is arranged in the second air duct and used for blowing out the air entering the second air duct from the first air outlet;

and the sliding door is in sliding connection with the shell so as to open or close the first air outlet.

The sliding door is arranged at the first air outlet, when the fan works, the sliding door is opened, and under the action of the air outlet fan, the air in the second air channel can be blown out from the first air outlet. When the fan is turned off, the sliding door is closed, so that the first air outlet is closed, and external impurities are prevented from entering the shell, and normal use of the fan is prevented from being influenced.

In an alternative embodiment of the present utility model, the sliding door includes a door body and a first sliding portion fixedly connected to the door body, and a second sliding portion is disposed on the housing, and the first sliding portion is slidably matched with the second sliding portion.

In an alternative embodiment of the present application, the second sliding portion includes a first sliding rail and a second sliding rail, where the first sliding rail and the second sliding rail are spaced apart to form a sliding slot, and the first sliding portion is inserted into the sliding slot.

In an alternative embodiment of the present application, one of the first sliding portion and the second sliding portion has a rolling portion, and the other has a guide groove, and the rolling portion is provided in the guide groove, and the rolling portion is slidable with respect to the guide groove under a condition that the sliding door slides with respect to the housing.

In an alternative embodiment of the present application, the second sliding portion includes a first sliding rail and a second sliding rail, and the first sliding rail and the second sliding rail are both provided with the guide grooves, and the two guide grooves clamp the rolling portion.

In an alternative embodiment of the present application, two first sliding portions are respectively disposed at two ends of the door body, two second sliding portions are respectively disposed at two ends of the first air outlet, and one first sliding portion is slidably engaged with one second sliding portion.

In an alternative embodiment of the present application, one of the first sliding portions is disposed above the door body, and the other first sliding portion is disposed below the door body.

In an alternative embodiment of the application, the housing comprises a decorative plate and a main body, the decorative plate is sleeved outside the main body, and the sliding door is arranged between the decorative plate and the main body.

In an alternative embodiment of the present application, the fan further includes an air flow adjusting assembly, and the air flow adjusting assembly is installed in the first air duct and detachably connected with the housing.

In an alternative embodiment of the present application, the housing includes a main body and an air inlet grille, the air inlet grille and the main body form the first air duct, the second air duct is disposed in the main body, the first air inlet is disposed on the air inlet grille, and the air inlet grille is detachably connected with the main body.

In an alternative embodiment of the present application, the housing further has a second air outlet, the fan further includes a switching component, the switching component separates the air outlet channel into the first air channel and the second air channel, the first air outlet is communicated with the second air channel, the second air outlet and the first air inlet are communicated with the first air channel, the switching component can enable the first air channel to be communicated with or cut off from the second air channel so as to enable the first air inlet to be communicated with or cut off from the first air outlet, and the switching component can enable the first air channel to be communicated with or cut off from the second air outlet so as to enable the first air inlet to be communicated with or cut off from the second air outlet.

In an alternative embodiment of the application, the switching assembly comprises an air outlet grille and a switching piece, wherein the switching piece is provided with a communication air duct, a first communication port and a second communication port which are communicated with the communication air duct, the communication air duct is communicated with the first air duct, and the air outlet grille is provided with a third communication port which is communicated with the second air duct;

the switching piece can rotate relative to the air outlet grille and the shell, so that the first communication port is communicated with the third communication port, the second communication port is blocked from the second air outlet, and the first air inlet is communicated with the first air outlet and blocked from the second air outlet;

or alternatively, the first and second heat exchangers may be,

and the first communication port is blocked from the third connection port, and the second communication port is communicated with the second air outlet, so that the first air inlet is blocked from the first air outlet and is communicated with the second air outlet.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is an exploded view of a fan according to an embodiment of the present application.

Fig. 2 is a cross-sectional view of a part of a structure of a fan according to an embodiment of the present application.

Fig. 3 is a partial enlarged view of a fan at a in fig. 2 according to an embodiment of the present application.

Fig. 4 is a partial cross-sectional view of an adjustable fan of a fan provided in an embodiment of the present application.

Fig. 5 is an internal schematic view of a fan according to an embodiment of the present application.

Fig. 6 is an exploded view of a switching assembly of a fan according to an embodiment of the present application.

Fig. 7 is a schematic diagram of a structure of a fan with a second air outlet closed according to an embodiment of the present application.

Fig. 8 is a partial enlarged view of a fan at C in fig. 7 according to an embodiment of the present application.

Fig. 9 is a schematic diagram of a structure of a fan with a second air outlet opened according to an embodiment of the present application.

Fig. 10 is a partially enlarged view of a fan at B in fig. 9 according to an embodiment of the present application.

Fig. 11 is a cross-sectional view of a fan according to an embodiment of the present application.

Fig. 12 is an assembly view of an air inlet grille of a fan according to an embodiment of the present application.

Fig. 13 is an exploded view of an airflow adjustment assembly of a fan according to an embodiment of the present application.

Fig. 14 is an exploded view of an airflow adjusting assembly of a fan according to an embodiment of the present application.

Reference numerals: a 100-degree fan, which is provided with a fan,

110-a housing, 112-an air outlet duct, 112 a-a first duct, 112 b-a second duct, 113 a-a first inlet, 113 b-a first outlet, 113 c-a second outlet, 113 d-a second inlet, 115-a decorative panel, 116 a-a transparent portion, 116 b-a first housing, 116 c-a second housing, 117-a body, 117 a-a second fastening portion, 117 b-a second plug portion, 118-an air inlet grille, 118 a-a first fastening portion, 118 b-a first plug portion, 118 c-a handle portion, 119-a support portion, 119 a-an air deflector,

120-air flow regulating component, 121-filter screen, 123-humidifying piece, 123 a-water tank, 123 b-wet curtain, 123 c-hand-fastening portion, 123 f-air flow guide plate,

130-an air outlet fan, wherein the air outlet fan is provided with a fan body,

140-adjusting fans, 141-wind shells, 142-adjusting channels, 144-wind wheels,

150-switching component, 152 a-first communication port, 152 b-second communication port, 152 c-communication air duct, 154-air outlet grille, 154 a-third communication port,

160-sliding door, 161-door body, 163-first sliding portion, 163 b-rolling portion,

170-second slide, 172-first slide, 174-second slide, 176-slide, 178-guide slot.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that all the directional indicators in the embodiments of the present utility model are only used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture, and if the specific posture is changed, the directional indicators are correspondingly changed.

In the present utility model, unless specifically stated and limited otherwise, the terms "connected," "affixed," and the like are to be construed broadly, and for example, "affixed" may be a fixed connection, a removable connection, or an integral body; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The fan is widely applied to daily life, and the fan mainly sucks air through the rotation of the fan and blows out after doing work, so that the function of blowing is achieved, the requirements of target users on the fan are higher and higher, the fan is required to meet the blowing function, the fan also has the adjusting function, and after the air enters the fan, the air is firstly adjusted through the air flow adjusting component and then blown out. If the air outlet is opened when the fan does not work, the air outlet of most fans is larger or external impurities can enter the fan through the air outlet, so that internal components are blocked. In the related art, a grille is usually arranged at the air outlet, so that larger impurities can be prevented from entering the fan, and the arrangement mode can influence the air outlet quantity and the air outlet speed of the fan in the working process of the fan, so that the experience of a user is reduced. The fan provided by the embodiment of the application can improve the problems, and the sliding door is arranged, so that the opening of the sliding door does not influence the air output and the air output speed when the fan works, and the sliding door can close the air outlet when the fan does not work, so that the risk of damage to the fan caused by impurities entering the inside of the fan is reduced, and the service life of the fan is prolonged.

The application is described below with reference to specific embodiments in conjunction with the accompanying drawings:

referring to fig. 1 and fig. 2, an embodiment of the present application provides a fan 100, in which a sliding door 160 is provided for the fan 100 of the embodiment of the present application, when the sliding door 160 is opened during operation, the air outlet and the air outlet speed are not affected, when the fan 100 is not operated, the sliding door can close the air outlet to reduce the risk of impurities entering the interior of the fan 100 to damage the fan 100, and the service life of the fan 100 is prolonged.

In an embodiment of the present application, the fan 100 includes: the air conditioner comprises a shell 110, an air flow adjusting assembly 120, an air outlet fan 130 and a sliding door 160, wherein the shell 110 is provided with a first air duct 112a, a second air duct 112b, a first air inlet 113a and a first air outlet 113b, the first air duct 112a is communicated with the second air duct 112b, the first air inlet 113a is communicated with the first air duct 112a, and the first air outlet 113b is communicated with the second air duct 112 b; the airflow adjusting assembly 120 is installed in the first air duct 112a, and has at least one of heating, humidifying and filtering functions for adjusting the process of the air introduced into the first air duct 112a through the first air inlet 113 a; the air outlet fan 130 is installed in the second air duct 112b, and is used for blowing out the air entering the second air duct 112b from the first air outlet 113 b; the sliding door 160 is slidably coupled with the housing 110 to open or close the first air outlet 113b.

In the embodiment of the present application, the external air enters the first air duct 112a from the first air inlet 113a, enters the second air duct 112b after being regulated by the airflow regulating assembly 120, and the air in the second air duct 112b is blown out from the first air outlet 113b under the action of the air outlet fan 130.

The sliding door 160 is disposed at the first air outlet 113b, when the fan 100 is operated, the sliding door 160 is opened, and the air in the second air duct 112b can be blown out from the first air outlet 113b under the action of the air outlet fan 130. When the fan 100 is turned off, the sliding door 160 is closed, so as to close the first air outlet 113b, thereby avoiding the foreign matters from entering the housing 110 and affecting the normal use of the fan 100.

Meanwhile, after the fan 100 is turned off, the sliding door 160 can close the first air outlet 113b, so that the front surface of the whole fan 100 is of a complete appearance, the appearance of the fan 100 is kept clean, and the experience of a user is improved.

In addition, in the working process of the fan, the sliding door 160 opens the first air outlet 113b, and the first air outlet 113b has no other blocking structure, so that the loss of the flow velocity of the air blown out from the first air outlet 113b can be reduced, the air outlet volume and the air outlet distance of the first air outlet 113b are improved, and the experience of a user is further improved.

The sliding door 160 can slide relative to the housing 110 to open or close the first air outlet 113b, and the sliding manner of the sliding door 160 relative to the housing 110 may slide from right to left to open the first air outlet 113b, or may slide from left to right to open the first air outlet 113b. In addition, the first air outlet 113b may be opened by sliding from bottom to top, or the first air outlet 113b may be opened by sliding from top to bottom.

The air outlet fan 130 is disposed in the second air duct 112b, and is mainly used for blowing out the air in the housing 110 from the first air outlet 113b, and since the air outlet fan 130 is far away from the first air inlet 113a, the flow rate of the air entering the first air duct 112a is smaller,

the housing 110 is further provided with a second air inlet 113d, and the second air inlet 113d is communicated with the second air duct 112b, so that air volume in the second air duct 112b can be supplemented. An air deflector 119a is disposed in the housing 110, and the air deflector 110 is disposed above the switching assembly 150 for at least partially guiding the air in the first air duct 112a into the second air duct 112 b.

In some embodiments, the sliding door 160 includes a door body 161 and a first sliding portion 163 fixedly connected to the door body 161, and the housing 110 is provided with a second sliding portion 170, and the first sliding portion 163 is slidably engaged with the second sliding portion 170.

The door 161 is a main structure for opening and closing the first air outlet 113b, and the first sliding portion 163 is connected to the housing 110 as a connection structure of the door 161, so that the door 161 can slide with respect to the housing 110, thereby opening or closing the first air outlet 113b.

Similarly, the second sliding portion 170 is provided on the housing 110, and the first sliding portion 163 and the second sliding portion 170 are slidably engaged to realize a function that the door 161 can slide with respect to the housing 110.

Referring to fig. 3, in some embodiments, the second sliding portion 170 includes a first sliding rail 172 and a second sliding rail 174, where the first sliding rail 172 and the second sliding rail 174 are spaced apart to form a sliding slot 176, and the first sliding portion 163 is inserted into the sliding slot 176.

The first sliding rail 172 and the second sliding rail 174 clamp the first sliding portion 163 in the sliding groove 176, and clamp the first sliding portion 163 from both sides of the first sliding portion 163, so that the risk of the first sliding portion 163 separating from the second sliding portion 170 can be reduced, and the stability of the entire sliding door 160 during sliding can be improved.

In some embodiments, one of the first sliding portion 163 and the second sliding portion 170 has a rolling portion 163b, the other has a guide groove 178, and the rolling portion 163b is disposed in the guide groove 178 such that the rolling portion 163b can rollably slide with respect to the guide groove 178 under the condition that the sliding door 160 slides with respect to the housing 110.

The first sliding portion 163 may be provided with a rolling portion 163b, and the second sliding portion 170 may be provided with a guide groove 178. The first sliding portion 163 may be provided with a guide groove 178, and the second sliding portion 170 may be provided with a rolling portion 163b. When the rolling portion 163b is provided on the first sliding portion 163 and the guide groove 178 is provided on the second sliding portion 170, the guide grooves 178 may be provided on both the first slide rail 172 and the second slide rail 174, and the rolling portion 163b may be engaged into both the guide grooves 178. The two guide grooves 178 sandwich the rolling portion 163b. That is, the guide grooves 178 of the first slide rail 172 and the guide grooves 178 of the second slide rail 174 cover the entire rolling portion 163b, so that the rolling portion 163b can slide with respect to the two guide grooves 178. In addition, the risk of the rolling portion 163b falling out of the guide groove 178 can be reduced, and the sliding stability can be improved.

During sliding, the rolling part 163b can rotatably slide relative to the guide groove 178, so that friction between the rolling part 163b and the guide groove 178 is reduced, resistance of the rolling part 163b sliding relative to the guide groove 178 is reduced, and sliding stability of the sliding door 160 is improved.

The number of the rolling portions 163b may be plural, and the plurality of rolling portions 163b may be disposed on the first rolling portion 163b at intervals, so as to increase the contact area between the first sliding portion 163 and the guide groove 178, thereby improving the sliding stability.

In addition to this, the rolling portion 163b may be integrally formed with the first sliding portion 163. That is, the rolling portion 163b cannot rotate with respect to the guide groove 178.

In some embodiments, the number of the first sliding portions 163 is two, the two first sliding portions 163 are respectively disposed at two ends of the door body 161, the number of the second sliding portions 170 is two, the two second sliding portions 170 are respectively disposed at two ends of the first air outlet 113b, and one first sliding portion 163 is slidably engaged with one second sliding portion 170.

The door body 161 is elongated, and the door body 161 is mounted on the housing 110, for example, the upper and lower ends of the door body 161 are left and right, the two first sliding portions 163 are respectively disposed at the upper and lower ends of the door body 161, and similarly, the two second sliding portions 170 are respectively disposed at the upper and lower ends of the first air outlet 113b, the upper first sliding portion 163 is engaged with the second sliding portion 170, and the lower first sliding portion 163 is engaged with the second sliding portion 170.

The two first sliding portions 163 have the same structure, and the two second sliding portions 170 have the same structure, and the upper first sliding portion 163 and the second sliding portion 170 are engaged in the same manner as the lower first sliding portion 163 and the second sliding portion 170.

The first sliding portion 163 and the second sliding portion 170 are provided at the upper and lower sides, and the upper and lower ends of the door 161 are slidably connected to the housing 110, so that sliding resistance can be reduced and stability during sliding can be improved.

In some embodiments, the housing 110 includes a trim panel 115 and a body 117, the trim panel 115 is sleeved outside the body 117, and the sliding door 160 is disposed between the trim panel 115 and the body 117.

The sliding door 160 is disposed between the decorative plate 115 and the main body 117, and the sliding door 160 is slid to a position between the decorative plate 115 and the main body 117 under the condition that the sliding door 160 opens the first air outlet 113b, so that the sliding door 160 can be hidden without affecting the external appearance.

Referring to fig. 4 and 5, in the embodiment of the present application, the switching component 150150 is installed in the air outlet channel, so that at least one of the first air outlet 113b and the second air outlet 113c can be used for air outlet, and a user can select any one of the first air outlet 113b and the second air outlet 113c according to his own needs, so as to improve the experience of the user.

It should be noted that, the communication between the first air outlet 113b and the second air outlet 113c and the first air inlet 113a through the air outlet channel includes three situations, the first is that only the first air outlet 113b is communicated with the first air inlet 113a through the air outlet channel, and the second is that only the second air outlet 113c is communicated with the first air inlet 113a through the air outlet channel. Third, the first air outlet 113b and the second air outlet 113c are simultaneously communicated with the first air inlet 113a through an air outlet channel.

In the first case, the air enters the air outlet channel from the first air inlet 113a, and is only blown out from the first air outlet 113b after being regulated by the air flow regulating assembly 120. In the second case, after the air enters the air outlet channel from the first air inlet 113a, the air is only blown out from the second air outlet 113c after being regulated by the air flow regulating assembly 120. In the third case, after the air enters the air outlet channel from the first air inlet 113a, the air is blown out from the first air outlet 113b and the second air outlet 113c after being regulated by the air flow regulating assembly 120.

In the embodiment of the present application, when the first air outlet 113b is connected to the first air inlet 113a through the air outlet channel, the air adjusted by the air flow adjusting assembly 120 in the air outlet channel can be blown out from the first air outlet 113 b. In the case that the second air outlet 113c is connected to the first air inlet 113a through the air outlet channel, the air adjusted by the air flow adjusting assembly 120 in the air outlet channel can be blown out from the second air outlet 113 c.

Specifically, the switching of the switching component 150150 may be automatic or manual. In a manual implementation manner, a user can directly toggle the switching component 150150 to realize the switching of the first air outlet 113b and the second air outlet 113 c. In the automatic switching scheme, a driver may be provided to be connected to the switching assembly 150150, and the switching of the first air outlet 113b and the second air outlet 113c may be achieved by driving the movement of the switching assembly 150150 by the driver.

In the embodiment of the present application, the positions of the first air outlet 113b and the second air outlet 113c are different, the first air outlet 113b is disposed substantially above the whole fan 100, and the first air outlet 113b is almost located at the top position, and the air outlet can be regarded as the top outlet. The second air outlet 113c is disposed substantially in the middle of the fan 100 and is located at a position substantially at the waist, and the second air outlet 113c can be regarded as a side air outlet. The user can select whether to eject the wind or side the wind according to self demand.

In some embodiments, the switching component 150150 can enable one of the first air outlet 113b and the second air outlet 113c to be in communication with the first air inlet 113a via the air outlet channel, and the other to be in communication with the first air inlet 113 a.

The switching component 150150 can enable one of the first air outlet 113b and the second air outlet 113c to be communicated with the first air inlet 113a through the air outlet channel in the switching process. That is, only one of the first air outlet 113b and the second air outlet 113c is air-out, if the first air outlet 113b is air-out, the second air outlet 113c is not air-out, and if the second air outlet 113c is air-out, the first air outlet 113b is not air-out.

The user can select whether to be the top outlet or the side outlet according to own requirements, and experience of the user can be improved.

In addition, the switching component 150150 can be two different components, one for opening the first air outlet 113b and the other for closing the second air outlet 113c, or one for opening the second air outlet 113c and the other for closing the first air outlet 113b, in the process of switching the first air outlet 113b and the second air outlet 113 c. The same component may also be used to realize the linkage switching between the first air outlet 113b and the second air outlet 113c, and close the second air outlet 113c while opening the first air outlet 113b, or close the first air outlet 113b while opening the second air outlet 113 c.

In some embodiments, the switching assembly 150150 separates the air outlet channel into a first air channel 112a and a second air channel 112b, the first air outlet 113b communicates with the second air channel 112b, the second air outlet 113c and the first air inlet 113a communicate with the first air channel 112a, the switching assembly 150150 may communicate or block the first air inlet 112a with the second air channel 112b to communicate or block the first air inlet 113a with the first air outlet 113b, and the switching assembly 150150 may communicate or block the first air channel 112a with the second air outlet 113c to communicate or block the first air inlet 113a with the second air outlet 113 c.

The first air outlet 113b is communicated with the second air duct 112b, the second air outlet 113c is communicated with the first air duct 112a, the switching component 150150 is arranged at the joint of the first air duct 112a and the second air duct 112b, the switching component 150150 can enable the first air duct 112a to be communicated with the second air duct 112b and the first air duct 112a and the second air outlet 113c to be blocked, and in this case, only air is discharged from the first air outlet 113 b. Further, the switching assembly 150150 can shut off the first air duct 112a from the second air duct 112b and the first air duct 112a communicates with the second air outlet 113c, in which case only air is exhausted from the second air outlet 113 c.

That is, the switching assembly 150150 is disposed at the junction of the first air duct 112a and the second air duct 112b and is disposed corresponding to the second air outlet 113c, the switching assembly 150150 and the second air outlet 113c are disposed at a height so as to directly open or close the second air outlet 113c, the first air outlet 113b is disposed above the switching assembly 150150, and the first air duct 112a and the second air duct 112b can be blocked to prevent the regulated air from entering the second air duct 112b, thereby preventing the air from flowing out of the first air outlet 113 b.

In some embodiments, only the grille is disposed at the first air outlet 113b and the second air outlet 113c, and the first air outlet 113b and the second air outlet 113c cannot be closed from the first air outlet 113b and the second air outlet 113c, so that communication between the first air outlet 113b and the second air outlet 113c and the first air inlet 113a respectively can be achieved through the switching assembly 150150, so as to achieve air outlet from the first air outlet 113b or air outlet from the second air outlet 113 c.

Referring to fig. 6, in some embodiments, the switching assembly 150150 includes an air outlet grille 154 and a switching member 152, the switching member 152 having a communication duct 152c and a first communication port 152a and a second communication port 152b in communication with the communication duct 152c, the communication duct 152c in communication with the first duct 112a, and the air outlet grille 154 having a third communication port 154a in communication with the second duct 112 b;

the switching member 152 can rotate relative to the air outlet grille 154 and the housing 110, so that the first communication port 152a is communicated with the third communication port 154a, and the second communication port 152b is blocked from the second air outlet 113c, so that the first air inlet 113a is communicated with the first air outlet 113b, and is blocked from the second air outlet 113 c;

or alternatively, the first and second heat exchangers may be,

the first communication port 152a and the third connection port are closed, and the second communication port 152b and the second air outlet 113c are communicated, so that the first air inlet 113a and the first air outlet 113b are closed, and the second air outlet 113c is communicated.

In some embodiments, the third communication port 154a of the air outlet grille 154 is communicated with the second air duct 112b, the switching member 152 is communicated with the first air duct 112a, and the switching member 152 is provided with a first communication port 152a and a second communication port 152b, so that the switching member 152 can rotate relative to the housing 110, and in the rotating process, the first communication port 152a is communicated with the third communication port 154a or the second communication port 152b is communicated with the second air outlet 113c, so as to realize air outlet of any one of the first air outlet 113b and the second air outlet 113 c.

The first communication port 152a and the second communication port 152b are respectively disposed at different positions on the switching member 152, and the first communication port 152a and the third communication port 154a may be conducted or the second communication port 152b may be conducted with the second air outlet 113c during the rotation of the switching member 152.

Referring to fig. 7 and 8, in some embodiments, the positions of the first communication port 152a and the second communication port 152b are staggered, and in the process of rotating the switching member 152, the first communication port 152a may be communicated with the third communication port 154a, so that the second air duct 112b is communicated with the first air duct 112a, and the air in the first air duct 112a after being regulated by the air flow regulating assembly 120 may enter the second air duct 112b through the first communication port 152a and the third communication port 154a, be blown out from the first air outlet 113b, and make the first air outlet 113b outlet air. When the first communication port 152a and the third communication port 154a are turned on, the second communication port 152b and the second air outlet 113c are shut off.

Referring to fig. 9 and 10, if the second air outlet 113c is desired to be exhausted, the switching member 152 is turned to stagger the first communication port 152a and the third communication port 154a, that is, the first communication port 152a and the third communication port 154a are blocked, and the second communication port 152b is communicated with the second air outlet 113c, so that the air in the first air duct 112a after being regulated by the air flow regulating assembly 120 can be directly exhausted from the second air outlet 113 c.

Of course, in addition to this, the positions of the first communication port 152a and the second communication port 152b may be set, so that when the switching member 152 rotates to a certain position, the first communication port 152a and the third communication port 154a are conducted, and the second communication port 152b and the second air outlet 113c are conducted, that is, the first air outlet 113b and the second air outlet 113c may be capable of simultaneously discharging air.

In some embodiments, the switching component 150150 further includes an air passage disposed outside the switching component 152 and corresponding to the second air outlet 113c, and similarly, a plurality of air passages are disposed on the air passage, and the plurality of air passages are sequentially corresponding to the plurality of second air outlets 113c, or the plurality of air passages are always communicated with the second air outlets 113 c.

In some embodiments, the second air outlet 113c is disposed on a sidewall of the housing 110, and the second communication port 152b is disposed on a sidewall of the switching member 152.

The second air outlet 113c is disposed at a position below the middle of the housing 110 and is a side air outlet, and the second air outlet 113c is disposed below the first air outlet 113b, and the second communication port 152b is disposed on a side wall of the switching member 152, and can be communicated with or staggered from the second air outlet 113c during the rotation of the switching member 152, so that whether the second air outlet 113c can discharge air or not.

In some embodiments, the outlet grille 154 is disposed above the switch 152, and the first communication port 152a is disposed on a top wall of the switch 152.

The first air outlet 113b is disposed above the second air outlet 113c, the air outlet grille 154 is also disposed above the switching member 152, and the first communication port 152a is disposed on a top wall of the switching member 152, so that the first communication port 152a and the third communication port 154a on the air outlet grille 154 can be communicated or staggered. The first communication port 152a is provided on the top wall of the switching member 152.

In some embodiments, the first communication port 152a is disposed on a top wall of the switch 152 and the second communication port 152b is disposed on a side wall of the switch 152.

Referring to fig. 11, the housing 110 includes a transparent portion 116a, and the position of the transparent portion 116a corresponds to the position of the adjusting fan 140.

In the embodiment of the application, the part of the shell 110 corresponding to the adjusting fan 140 is the transparent part 116a, and in the working process of the adjusting fan 140, a user can intuitively see the rotation of the adjusting fan 140, so that the three-dimensional sense and the layering sense of the whole machine can be increased, and colors are added for the whole appearance.

Meanwhile, the position of the adjusting fan 140 corresponds to the position of the transparent part 116a, in the working process of the adjusting fan 140, a user can directly see whether the adjusting fan 140 works normally or not, whether the adjusting fan 140 works normally or not can be observed without disassembling the fan, the method is simple and convenient, the working procedure of checking the adjusting fan 140 can be reduced, and the normal working of the fan 100 can not be influenced.

In addition, as for the thickness of the transparent portion 116a, the same thickness as the thickness of the adjusting fan 140 may be used, and the thickness of the adjusting fan 140 may be slightly smaller or slightly larger than the thickness of the adjusting fan 140, so long as the adjusting fan 140 can be seen through the transparent portion 116a to operate normally.

The thickness of the transparent portion 116a refers to the length of the transparent portion 116a in the vertical direction, that is, the length in the height direction. Also, after the adjusting fan 140 is installed in the outlet duct 112, the thickness of the adjusting fan 140 refers to a length in a vertical direction, that is, a length in a height direction.

The position of the adjusting fan 140 is correspondingly set to the position of the transparent portion 116a, and the position of the air outlet duct 112 corresponding to the adjusting fan 140 is also transparent, so as to ensure that the user can see the rotation of the adjusting fan 140 through the transparent portion 116 a.

In some embodiments, the adjusting fan 140 includes a fan housing 141 and a fan wheel 144, the fan wheel 144 is disposed in the fan housing 141, the fan housing 141 is made of a transparent material, and the position of the fan housing 141 corresponds to the position of the transparent portion 116 a.

The wind shell 141 is arranged in the air outlet duct 112, the wind shell 141 is made of transparent materials, and in the process of rotating the wind wheel 144, a user can intuitively see the rotation of the wind wheel 144, so that the stereoscopic impression and layering impression of the whole machine can be increased, and colors are added for the whole appearance.

In some embodiments, the air shell 141 has a regulating passage 142, where the regulating passage 142 communicates with the first air passage 112a and the second air passage 112b, and is capable of guiding the air in the first air passage 112a into the second air passage 112b. The adjusting channel 142 can refer to a diversion function, and can divert the air in the first air channel 112a into the second air channel 112b, so as to reduce the loss of air quantity and increase the flow rate.

In some embodiments, the housing 110 further includes a first housing 116b and a second housing 116c, the first housing 116b and the transparent portion 116a forming a first air duct 112a, the second housing 116c forming a second air duct 112b.

The second housing 116c is disposed above the first housing 116b such that the first air path 112a is disposed above the second air path 112b.

Referring to fig. 12 and 13, in the embodiment of the application, the airflow adjusting assembly 120 is detachably connected to the housing 110, and after the airflow adjusting assembly 120 works for a long time, the airflow adjusting assembly 120 can be detached from the housing 110, so as to facilitate cleaning of the airflow adjusting assembly 120, and improve the adjusting capability of the whole fan 100.

In the manner that the airflow adjusting assembly 120 is detached from the housing 110, if the first air outlet 113b is large enough, the airflow adjusting assembly 120 may be directly detached from the first air outlet 113b to the outside of the housing 110, and a portion of the housing 110 may be detached, from which the airflow adjusting assembly 120 is detached to the outside of the housing 110.

In addition, the airflow adjusting assembly 120 is disposed near the first air inlet 113a, and after the external airflow enters the first air duct 112a from the first air inlet 113a, the external airflow can be filtered by the airflow adjusting assembly 120 first and then enters the second air duct 112 b. The airflow adjusting assembly 120 is disposed near the first air inlet 113a, so that the air entering the first air duct 112a from the first air inlet 113a can be adjusted by the airflow adjusting assembly 120 as completely as possible, and the adjusting effect of the whole fan is improved.

In an embodiment of the present application, the airflow conditioning assembly 120 has both filtration and humidification functions. The air flow adjusting assembly 120 may perform the filtering treatment on the air entering through the first air inlet 113a, and then perform the humidifying treatment. The air flow adjusting assembly 120 may perform humidification treatment and then filtration treatment on the air entering through the first air inlet 113a, and the sequence may not be limited.

The air outlet fan 130 is installed in the second air duct 112b, after the air processed by the air flow adjusting assembly 120 enters the second air duct 112b, the air is blown out from the first air outlet 113b under the action of the air outlet fan 130, the air outlet fan 130 can improve the speed of the air blown out from the first air outlet 113b, the user can feel the wind sensation, and the user experience is improved.

The first air inlet 113a and the first air outlet 113b are arranged in a staggered manner, so that the influence on the adjusting effect caused by the fact that external air directly blows out from the first air outlet 113b after entering the first air duct 112a from the first air inlet 113a can be avoided as much as possible.

Similarly, the airflow adjusting component 120 is mainly used for adjusting the air entering the housing 110, the air outlet fan 130 is mainly used for blowing the air in the housing 110 out of the first air outlet 113b, the airflow adjusting component 120 is installed in the first air duct 112a, and the air outlet fan 130 is installed in the second air duct 112b, so that the adjusting function and the air outlet function can be set in a staggered manner, and the air is prevented from being directly blown out of the first air outlet 113b after being not adjusted as far as possible.

In some embodiments, the housing 110 includes a main body 117 and an air inlet grille 118, the air inlet grille 118 and the main body 117 form a first air duct 112a, a second air duct 112b is disposed in the main body 117, a first air inlet 113a is disposed on the air inlet grille 118, and the air inlet grille 118 is detachably connected to the main body 117.

Wherein, be provided with the installing port on the main part 117, air inlet grid 118 installs in the installing port department, and first air intake 113a sets up on air inlet grid 118, and air flow adjustment assembly 120 is close to first air intake 113a setting, and air inlet grid 118 and main part 117 detachably are connected, and after air inlet grid 118 was dismantled from main part 117, air flow adjustment assembly 120 exposes, can directly dismantle air flow adjustment assembly 120 from the installing port, further can make things convenient for air flow adjustment assembly 120's dismouting.

In some embodiments, the first air inlet 113a is disposed around the air inlet grille 118.

The number of the first air inlets 113a is plural, the plurality of first air inlets 113a are annularly arranged on the air inlet grille 118, the opening area of the first air inlets 113a is smaller, larger impurities in the air can be filtered out in advance before the air enters the first air duct 112a, the larger impurities are prevented from entering the first air duct 112a as much as possible, the air flow adjusting assembly 120 is blocked or other components in the first air duct 112a are blocked, and the service life is reduced.

The plurality of first air inlets 113a may be arranged on the air inlet grille 118 in a matrix manner, and multiple rows and columns of first air inlets 113a may be disposed on the air inlet grille 118, so that the air inlet volume is ensured, and the opening area of the first air inlets 113a may be reduced.

In some embodiments, the air inlet grill 118 is provided with a handle portion 118c. When the air inlet grille 118 is detached, a user can hold the air inlet grille 118 on the handle portion 118c, and the air inlet grille 118 is conveniently detached from the main body 117.

The handle portion 118c may be a groove formed in the air inlet grille 118, and when the air inlet grille 118 is detached, a user can scratch the other four fingers except the thumb into the groove, so that the air inlet grille 118 can be conveniently installed or detached.

Of course, the handle portion 118c may be protruded on the air inlet grille 118, so that the user can detach the air inlet grille 118 conveniently.

In some embodiments, the air inlet grille 118 is provided with a first plug-in portion 118b, the main body 117 is provided with a second plug-in portion 117b, and the first plug-in portion 118b is plugged into the second plug-in portion 117 b.

The first inserting portion 118b is disposed below the air inlet grille 118, and similarly, the second inserting portion 117b is disposed below the mounting opening, and after the air inlet grille 118 is mounted, the first inserting portion 118b is inserted into the second inserting portion 117b, and then the air inlet grille 118 is rotated, so that the air inlet grille 118 is mounted at the mounting opening.

The first plugging portion 118b is provided with a slot, and when the air inlet grille 118 is installed, the air inlet grille 118 is moved to the installation opening, and the air inlet grille 118 is moved, so that the second plugging portion 117b is plugged into the slot to fix the lower part of the air inlet grille 118.

In some embodiments, the air inlet grille 118 is provided with a first fastening portion 118a, the main body 117 is provided with a second fastening portion 117a, and the first fastening portion 118a and the second fastening portion 117a are detachably connected.

The first fastening portion 118a is disposed above the air inlet grille 118, the second fastening portion 117a is disposed above the mounting opening, and the air inlet grille 118 can be locked by cooperation of the first fastening portion 118a and the second fastening portion 117 a.

The number of the first fastening portions 118a may be two, the two first fastening portions 118a may be respectively disposed on the left and right sides of the air inlet grille 118, and similarly, the number of the second fastening portions 117a may be two, the two second fastening portions 117a may be respectively disposed on the left and right sides of the mounting opening, and one first fastening portion 118a is engaged with one second fastening portion 117 a.

When the air inlet grille 118 is installed, the air inlet grille 118 can be firstly flattened, the first inserting part 118b is moved to the second inserting part 117b, the slot of the first inserting part 118b is installed on the second inserting part 117b, the air inlet grille 118 is rotated by taking the first inserting part 118b and the second inserting part 117b as rotating shafts, the first fastening part 118a moves towards the direction close to the second fastening part 117a until the first fastening part 118a is fastened with the second fastening part 117a, and the air inlet grille 118 is installed on the main body 117.

In contrast to the above procedure, when the air intake grille 118 is detached, the first fastening portion 118a and the second fastening portion 117a are separated, the air intake grille 118 is rotated by taking the first inserting portion 118b and the second inserting portion 117b as rotating shafts, so that the air intake grille 118 is rotated in a direction away from the mounting opening, and finally the first inserting portion 118b and the second inserting portion 117b are separated.

It will be readily appreciated that fingers may be snapped into the handle portion 118c throughout the entire installation and removal process.

In some embodiments, the housing 110 includes a main body 117 and a support 119, the first and second air ducts 112a, 112b are disposed within the main body 117, the support 119 is disposed within the first air duct 112a, and the airflow adjustment assembly 120 is detachably coupled to the support 119.

The support portion 119 is arranged to extend from one end of the first air duct 112a to the other side, and is arranged in the first air duct 112a in a transverse manner, so that the air flow adjusting assembly 120 is convenient to install, the air flow adjusting assembly 120 can be arranged along the extending direction of the first air duct 112a, after external air enters the first air duct 112a, the external air can be adjusted by the air flow adjusting assembly 120 in the process of gradually flowing to the second air duct 112b, the loss of the flow speed of the air can be reduced, and the air outlet effect is improved.

Wherein, the air flow adjusting component 120 is detachably connected with the supporting part 119, when the air flow adjusting component 120 is installed, the air inlet grille 118 is firstly detached from the installation opening, then the air flow adjusting component 120 is installed on the supporting part 119, and finally the air inlet grille 118 is installed on the installation opening. Similarly, if the airflow adjustment assembly 120 is to be removed from the support 119, the air inlet grille 118 is removed from the mounting opening, and then the airflow adjustment assembly 120 is removed from the support 119.

As for the detachable connection manner between the air flow adjusting assembly 120 and the supporting portion 119, the air flow adjusting assembly 120 may be in a clamping manner with the supporting portion 119, may be in an inserting manner, or may be detachably connected with the supporting portion 119 by a screw manner.

Referring to fig. 14, in some embodiments, the airflow adjustment assembly 120 includes a filter screen 121 and a humidifying member 123, and the filter screen 121 and the humidifying member 123 are detachably mounted on the support portion 119.

The filter screen 121 is mainly used for filtering impurities in the gas, and the humidifier is mainly used for humidifying the gas so as to achieve comfortable humidity for users. The air flow regulating assembly 120 can play a role in filtering and humidifying, and the air flow regulating assembly 120 can play a role in humidifying and filtering, so that the functions of the air flow regulating assembly 120 are enhanced, and the structure of the air flow regulating assembly 120 is simplified.

In some embodiments, the screen 121 is mounted below the support 119 and the humidifying member 123 is mounted above the support 119.

The filter 121 is disposed below, and the humidifying member 123 is disposed above, so that the first air inlet 113a enters the first air duct 112a, after being filtered by the filter 121, is humidified by the humidifying member 123. The filter 121 can filter out most of impurities in the gas, and the filtered gas is humidified by the humidifying component 123 and then enters the second air duct 112 b. Filtering before humidifying can reduce the risk of blockage of the humidifying part 123, and the service life of the humidifying part 123 is prolonged.

In addition, the filter screen 121 is mostly hollow in structure and has a plurality of holes, so that the filter screen 121 is light in weight. The filter screen 121 is provided below the support portion 119, and the filter screen 121 may be detachably connected to the support portion 119 or may be detachably connected to the lower case 110.

The weight of the humidifying piece 123 is relatively heavy, the humidifying piece 123 is mounted above the supporting portion 119, the supporting portion 119 can play a supporting role on the humidifying piece 123, and the supporting portion 119 can be stably placed on the supporting portion 119 by means of self gravity. Specifically, the humidifying element 123 may be fastened to the support portion 119, may be inserted, or the humidifying element 123 may be detachably connected to the support portion 119 by a screw.

In some embodiments, the humidifying member 123 includes a water tank 123a and a wet curtain 123b, the water tank 123a is detachably mounted on the support 119, and the wet curtain 123b is inserted into the water tank 123 a.

The wet curtain 123b is made of an absorbing material, the wet curtain 123b is inserted on the water tank 123a, and can continuously absorb water in the water tank 123a, so that the wet curtain 123b can keep certain humidity, and after the air passes through the wet curtain 123b, the air is humidified, and the humidified air can enter the second air duct 112 b.

The water tank 123a is arranged below the wet curtain 123b, and the wet curtain 123b is self-suction type, i.e. can be automatically soaked from bottom to top. Besides this, the outside can also be humidified by spraying from top to bottom to wet curtain 123 b.

The humidifying part 123 further comprises an air flow guide plate 123f, the air flow guide plate 123f is arranged in the wet curtain 123b and is arranged in a staggered mode with the water tank 123a, so that air flows completely through the air inlet grille of the water tank 123a to pass through the wet curtain 123b, and the humidifying capacity is effectively improved.

In some embodiments, the filter screen 121 is disposed corresponding to the first air inlet 113 a. The filter screens 121 are disposed at the first air inlet 113a, so that the air entering the outside is adjusted by the airflow adjusting assembly 120 as soon as entering the first air duct 112a, and a part of the air is prevented from entering the first housing 110 without being adjusted.

The filter 121 is annular and is disposed around the first air inlet 113 a. Similarly, the wet curtain 123b is also annular and disposed above the filter screen 121, and after passing through the first air inlet 113a, the outside air sequentially passes through the filter screen 121, enters the area in the middle of the filter screen 121, diffuses into the wet curtain 123b, diffuses through the wet curtain 123b into the space between the housing 110 and the wet curtain 123b, and enters the second air duct 112 b.

In addition, the water tank 123a is further provided with a rear grip 123c, which can facilitate the installation and removal of the water tank 123 a.

In some embodiments, the fan 100 further includes a conditioning fan 140, where the conditioning fan 140 is disposed in the first air duct 112a, for allowing external air to enter the first air duct 112a from the first air inlet 113 a.

The air conditioner 140 mainly enables external air to enter the first air duct 112a through the first air inlet 113a, enter the second air duct 112b after being filtered by the filter screen 121 and humidified by the wet curtain 123b, and blow out from the first air outlet 113b under the action of the air outlet fan 130.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.

Claims (11)

1. A fan, comprising:

a housing (110) having a first air duct (112 a), a second air duct (112 b), a first air inlet (113 a) and a first air outlet (113 b), the first air duct (112 a) being in communication with the second air duct (112 b), the first air inlet (113 a) being in communication with the first air duct (112 a), the first air outlet (113 b) being in communication with the second air duct (112 b);

an air outlet fan (130) which is arranged in the second air duct (112 b) and is used for blowing out the air entering the second air duct (112 b) from the first air outlet (113 b);

and a sliding door (160) which is slidably connected with the housing (110) to open or close the first air outlet (113 b).

2. The fan according to claim 1, wherein the sliding door (160) comprises a door body (161) and a first sliding portion (163) fixedly connected with the door body (161), a second sliding portion (170) is provided on the housing (110), and the first sliding portion (163) is slidably matched with the second sliding portion (170).

3. The fan of claim 2, wherein the second sliding portion (170) includes a first sliding rail (172) and a second sliding rail (174), the first sliding rail (172) and the second sliding rail (174) are disposed at intervals to form a sliding slot (176), and the first sliding portion (163) is inserted into the sliding slot (176).

4. The fan according to claim 2, wherein one of the first sliding portion (163) and the second sliding portion (170) has a rolling portion (163 b), the other has a guide groove (178), the rolling portion (163 b) is provided in the guide groove (178), and the rolling portion (163 b) is slidable with respect to the guide groove (178) under a condition that the sliding door (160) slides with respect to the housing (110).

5. The fan according to claim 4, wherein the second sliding portion (170) includes a first slide rail (172) and a second slide rail (174), the first slide rail (172) and the second slide rail (174) are each provided with the guide groove (178), and the two guide grooves (178) hold the rolling portion (163 b).

6. The fan according to claim 2, wherein the number of the first sliding portions (163) is two, the number of the two first sliding portions (163) is two, the number of the second sliding portions (170) is two, the number of the two second sliding portions (170) is two, the number of the first sliding portions (163) is two, the number of the second sliding portions (170) is two, and the number of the first sliding portions (163) is one.

7. The fan according to claim 6, wherein one of the first sliding portions (163) is disposed above the door body (161), and the other of the first sliding portions (163) is disposed below the door body (161).

8. The fan (100) of any of claims 1-7, wherein the housing (110) includes a decorative plate (115) and a main body (117), the decorative plate (115) is sleeved outside the main body (117), and the sliding door (160) is disposed between the decorative plate (115) and the main body (117).

9. The fan according to any of claims 1-7, wherein the fan (100) further comprises an airflow adjustment assembly (120), the airflow adjustment assembly (120) being mounted within the first air duct (112 a) and being detachably connected to the housing (110).

10. The fan according to any of claims 1-7, wherein the housing (110) further has a second air outlet (113 c), the fan (100) further comprising a switching assembly (150), the switching assembly (150) dividing the interior of the housing (110) into the first air duct (112 a) and the second air duct (112 b), the first air outlet (113 b) being in communication with the second air duct (112 b), the second air outlet (113 c) and the first air inlet (113 a) being in communication with the first air duct (112 a), the switching assembly (150) being operable to communicate or shut off the first air duct (112 a) with the second air duct (112 b) such that the first air inlet (113 a) is in communication with or shut off the first air outlet (113 b), the switching assembly (150) being operable to communicate or shut off the first air duct (112 a) with the second air outlet (113 c) such that the first air duct (113 a) is in communication with the second air inlet (113 c) is in communication with the second air outlet.

11. The fan according to claim 10, wherein the switching assembly (150) includes an air outlet grille (154) and a switching member (152), the switching member (152) having a communication air duct (152 c) and a first communication port (152 a) and a second communication port (152 b) communicating with the communication air duct (152 c), the communication air duct (152 c) communicating with the first air duct (112 a), the air outlet grille (154) being provided with a third communication port (154 a) communicating with the second air duct (112 b);

the switching piece (152) can rotate relative to the air outlet grille (154) and the shell (110), so that the first communication port (152 a) is communicated with the third communication port (154 a), the second communication port (152 b) is blocked from the second air outlet (113 c), and the first air inlet (113 a) is communicated with the first air outlet (113 b) and is blocked from the second air outlet (113 c);

or alternatively, the first and second heat exchangers may be,

the first communication port (152 a) and the third communication port (154 a) are closed, and the second communication port (152 b) and the second air outlet (113 c) are communicated, so that the first air inlet (113 a) and the first air outlet (113 b) are closed, and the second air outlet (113 c) is communicated.