CN218093610U - Fan and household appliance - Google Patents

Abstract

The application relates to the technical field of fans and discloses a fan which comprises a shell, wherein an air duct is formed inside the shell; the impeller is rotatably arranged in the air duct and divides the air duct into a first air duct and a second air duct to limit an inner space; the flow guide structure is arranged in the inner space and defines a flow guide channel, the flow guide channel is communicated with the first air channel and the second air channel through the impeller, and the flow guide structure moves relative to the inner space so as to change the air outlet direction of the impeller; the air guide component comprises: the connecting plate is rotatably connected with the fixing plate, is arranged in the first air channel and/or the second air channel and is positioned outside the impeller, and the air circulation area of the first air channel and/or the second air channel is changed by changing the positions of the fixing plate and the connecting plate. This application changes the flow area in wind channel through setting up mobilizable guide part. The application also discloses a household appliance.

Description

Fan and household appliance

Technical Field

The application relates to the technical field of fans, for example to a fan and a household appliance.

Background

At present, a fan is a machine which increases gas pressure and discharges gas by means of input mechanical energy, and is a driven fluid machine. The fan is widely applied to household appliances due to the characteristics of simple structure, straight generated air flow and the like.

Disclosed in the related art is a fan, which includes: an impeller; the flow guide structure is rotatably arranged in the impeller and comprises a body and a connecting shaft, the body is positioned in the impeller, and one end of the connecting shaft is connected with the body; one end of the driving core is connected with the other end of the connecting shaft; the hand pull rope is arranged at the other end of the driving core, the hand pull rope drives the driving core to rotate after being stressed, and the driving core rotates to drive the diversion structure to rotate.

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

in the related art, the fan is provided with the flow guide structure, the flow guide structure is utilized to rotate to change the flow direction of the air flow inside the impeller, and then the air outlet direction of the impeller is changed, so that the air outlet direction of the fan is changed. The air-out direction of fan mainly decides the air-out direction by the eccentric whirlpool of the air current that the impeller formed, can change the direction of the eccentric whirlpool of air current through setting up the water conservancy diversion structure, but after the fan changed business turn over wind direction, can lead to the air-out side of fan to produce great amount of wind loss, influences the air-out effect.

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 a fan and a household appliance, so as to solve the problem that the air outlet effect of the fan is not good in the related art.

An embodiment of a first aspect of the present application provides a wind turbine, the wind turbine comprising: a housing having an air duct formed therein; the impeller is rotatably arranged in the air duct and divides the air duct into a first air duct and a second air duct, and the impeller defines an inner space; the flow guide structure is arranged in the inner space and defines a flow guide channel, the flow guide channel is communicated with the first air channel and the second air channel through the impeller, and the flow guide structure moves relative to the inner space so as to change the air outlet direction of the impeller; the air guide part comprises: the air guide component is arranged in the first air channel and/or the second air channel and positioned outside the impeller, and the air circulation area of the first air channel and/or the second air channel is changed by changing the positions of the fixed plate and the rotating plate so as to be switched into an air inlet channel or an air outlet channel.

In some optional embodiments, the casing includes a first side wall and a second side wall which are oppositely arranged, and the wind guide part includes: the first air guiding component comprises a first fixing plate, a first connecting plate and a first rotating shaft and is arranged on the first side wall, wherein the first fixing plate is fixedly connected with the first side wall; the first rotating shaft is connected with the first fixing plate, is arranged between the impeller and the first side wall and can rotate around the axis of the impeller, and the first connecting plate is connected with the first rotating shaft and rotates around the axis of the first rotating shaft; the second air guiding component comprises a second fixing plate, a second connecting plate and a second rotating shaft and is arranged on the second side wall, wherein the second fixing plate is fixedly connected with the second side wall, and the second rotating shaft is connected with the second fixing plate, is arranged between the impeller and the second side wall and can rotate around the axis of the second fixing plate; the second connecting plate is connected with the second rotating shaft and rotates around the axis of the second rotating shaft.

In some optional embodiments, the first air guiding component and the second air guiding component are located on two sides of the center of the impeller, which are opposite to the straight line where the perpendicular line of the first side wall is located, or located on two sides of the center of the impeller, which are opposite to the straight line where the perpendicular line of the second side wall is located.

In some optional embodiments, the fan further comprises: the first volute tongue is arranged on the first side wall and is positioned on two sides of a straight line where a perpendicular line between the first side wall and the center of the impeller is positioned with the first air guide part; the second volute tongue is arranged on the second side wall and connected with the end part of the second air guide part, the first volute tongue and the second air guide part define a first air channel, the second volute tongue and the first air guide part define a second air channel, one of the first air channel and the second air channel is used for air inlet, and the other one of the first air channel and the second air channel is used for air outlet.

In some optional embodiments, the flow guide structure comprises: the first flow guide piece comprises a first wall surface and a second wall surface, and the distance between the first wall surface and the inner side edge of the impeller is smaller than the distance between the second wall surface and the inner side edge of the impeller; the second flow guide piece is arranged on one side, away from the first wall surface, of the second wall surface and forms the flow guide channel with the second wall surface; the flow guide structure is movable relative to the shell between a first flow guide position and a second flow guide position, when the flow guide structure is at the first flow guide position, the first volute tongue, the first flow guide piece and the second flow guide piece are sequentially arranged, and the distance between the first flow guide piece and the first volute tongue is smaller than the distance between the first flow guide piece and the second volute tongue, so that air flows from the second air channel to the first air channel; when the flow guide structure is at the second flow guide position, the second volute tongue, the first flow guide piece and the second flow guide piece are sequentially arranged, and the distance between the first flow guide piece and the second volute tongue is smaller than the distance between the first flow guide piece and the first volute tongue, so that air flows from the first air channel to the second air channel.

In some optional embodiments, when the flow guiding structure is located at the first flow guiding position, the distance between the first wind guiding part and the second volute tongue is greater than the distance between the second wind guiding part and the first volute tongue; when the flow guide structure is located at the second flow guide position, the distance between the first air guide part and the second volute tongue is smaller than the distance between the second air guide part and the first volute tongue.

In some optional embodiments, a plurality of flow guiding elements are arranged on one side of the second flow guiding element, which faces away from the first flow guiding element, a flow passage is formed between two adjacent flow guiding elements, and two ends of the flow passage are communicated with the interior of the volute through the impeller.

Embodiments of a second aspect of the present application provide a household appliance comprising: comprising a fan as described in any of the above alternative embodiments,

in some optional embodiments, the household appliance includes an air conditioner, the indoor unit of the air conditioner includes a body, the fan is located in the body, the body is provided with a first air opening and a second air opening, the first air opening is opened along a horizontal direction or is opened upwards, and the second air opening is opened downwards; the first side wall is positioned above the second side wall, and when the flow guide structure is at the first flow guide position, air enters from the second air opening and flows out from the first air opening; when the flow guide structure is at the second flow guide position, air enters from the first air opening and flows out from the second air opening.

In some optional embodiments, the indoor unit of the air conditioner further includes: the stop piece is arranged at the second air opening and extends along the air circulation direction, and the stop piece is abutted with the first connecting plate to limit the rotation angle of the first connecting plate.

The fan and the household appliance provided by the embodiment of the disclosure can realize the following technical effects:

the movable flow guide structure is arranged in the impeller of the fan, the forming position of the eccentric vortex is changed by utilizing the guide effect of the flow guide structure through the movable flow guide structure, so that the flowing direction of air in the shell is changed, the air circulation area of an air channel defined by the air guide part and the shell can be increased or reduced by arranging the movable air guide part, when the air channel is used for air inlet, the air circulation area of the air channel can be increased, the air inlet quantity of the fan is increased, and the air outlet quantity of the fan is further increased; when the wind channel is used for the air-out, can reduce the circulation of air area in wind channel, prevent that the wind channel from leading to the contrary wind or surging because of compressive capacity is not enough, and then reduce the amount of wind loss of fan, promote the air-out effect of fan. In addition, through setting up wind-guiding part, can reduce the noise that the air flows and collides the production with the casing in the casing, promote user's use experience.

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 cross-sectional view of a wind turbine in one aspect provided by embodiments of the present disclosure;

FIG. 2 is a schematic cross-sectional view of a wind turbine in another aspect provided by embodiments of the present disclosure;

FIG. 3 is an enlarged schematic view of a portion A of FIG. 2 according to an embodiment of the present disclosure;

fig. 4 is a schematic cross-sectional view of a flow guide structure provided in an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a household appliance provided in the embodiment of the present disclosure;

fig. 6 is an exploded view of a part of a household appliance according to an embodiment of the present disclosure.

Reference numerals:

10: a housing; 101: a first side wall; 102: a second side wall; 11: an accommodating chamber; 12: a first volute tongue; 13: a second volute tongue;

20: an impeller; 201: a cascade of leaves; 202: an interior space;

30: a flow guide structure; 31: a flow guide channel; 32: a first flow guide member; 321: a first wall surface; 322: a second wall surface; 33: a second flow guide member; 34: a flow guide member; 35: a flow channel;

40: a wind guide member; 41: a first air guiding component; 411: a first fixing plate; 412: a first connecting plate; 413: a first rotating shaft; 42: a second air guiding component; 421: a second fixing plate; 422: a second connecting plate; 423: a second rotating shaft; 43: an air duct; 431: a first air duct; 432: a second air duct;

50: a body; 501: a first tuyere; 502: a second tuyere; 503: a stopper;

60: a drive motor; 61: a first stepper motor; 62: a second stepper motor.

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, terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on 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 disclosed embodiments 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.

With reference to fig. 1-4, an embodiment of the present disclosure provides a fan, including: the air guide structure comprises a shell 10, an impeller 20, a flow guide structure 30 and an air guide part 40; the housing 10 forms an accommodating cavity 11 and an air duct 43 communicated with the accommodating cavity 11; the impeller 20 is rotatably arranged in the air duct 43 and divides the air duct 43 into a first air duct 431 and a second air duct 432, and the impeller 20 defines an inner space 202; the flow guide structure 30 is arranged in the inner space 202, the flow guide structure 30 defines a flow guide channel 31, the flow guide channel 31 is communicated with the first air channel 431 and the second air channel 432 through the impeller 20, and the flow guide structure 30 moves relative to the inner space 202 to change the air outlet direction of the impeller 20; the air guide member 40 includes: the air guide component 40 is arranged in the first air duct 431 and/or the second air duct 432, the air guide component 40 is positioned outside the impeller 20, and the air circulation area of the first air duct 431 and/or the second air duct 432 is changed by changing the positions of the fixed plate and the rotating plate so as to be switched into an air inlet duct or an air outlet duct.

The air guiding component 40 is disposed in the first air duct 431 or the second air duct 432, and the air guiding component 40 is located outside the impeller 20, that is, when the number of the air guiding components 40 is one, all the air guiding components 40 may be located in the first air duct 431 and outside the impeller 20, and at this time, only the air circulation area of the first air duct 431 may be changed by the movable air guiding component 40; the air guiding component 40 may be located in the second air channel 432 and outside the impeller 20, and at this time, only the air flow area of the second air channel 432 may be changed by moving the air guiding component 40; when the number of the air guiding members 40 is two, the two air guiding members 40 are respectively located in the first air duct 431 and the second air duct 432 and are located outside the impeller 20, that is, one of the two air guiding members 40 is located in the first air duct, and the other is located in the second air duct, that is, as shown in fig. 1 and fig. 2, the air flow areas of the first air duct 431 and the second air duct 432 can be changed by moving the two air guiding members 40.

By adopting the fan provided by the embodiment of the disclosure, the flow guide structure 30 is arranged in the impeller 20, the flow guide structure 30 defines the flow guide channel 31, when the impeller 20 rotates, the airflow flows into the impeller 20 and flows out of the impeller 20 after flowing through the flow guide channel 31, the position of the flow guide structure 30 determines the formation position of an eccentric vortex in the impeller 20, so that the air flowing direction of the fan can be determined, by arranging the air guide part 40, the air guide part 40 and the inner wall surface of the shell 10 define the first air channel 431 or the second air channel 432, one of the first air channel 431 or the second air channel 432 is used for air outlet, and the other one of the first air channel 431 or the second air channel 432 is used for air inlet, and by arranging the rotatable connecting plate, the air circulation area of the first air channel 431 or the second air channel 432 can be increased or reduced, so as to be switched into an air inlet channel or an air outlet channel. In addition, the arrangement of the air guide part 40 can reduce the collision between the air flow and the shell 10, thereby reducing the wind loss, further improving the air outlet effect of the fan and reducing the noise generated by the collision of the air flow.

The impeller 20 is a multi-blade type, and includes a plurality of blade cascades 201, and a plurality of blade cascades 201 are arranged along the circumference, and the impeller 20 is cylindrical and is arranged in the casing 10. A corresponding motor is provided within the housing 10, by means of which the impeller 20 is driven for rotation within the volute. The impeller 20 may also be rotated relative to the housing 10 by other means, may be belt driven, may be gear driven, etc., it being understood that any means of driving the impeller 20 to rotate relative to the housing 10 is contemplated as being alternative to the present application.

When the impeller 20 rotates, the airflow enters the impeller 20 from the open part of the impeller 20 (the gap between two adjacent blade cascades 201), and is discharged from the other blade cascade 201, so as to form working airflow. The flow of the air flow in the impeller 20 is complicated by the fact that the velocity field of the air flow is unstable, and an eccentric vortex is also present in the impeller 20 and centered near the flow directing structure 30. The existence of the eccentric vortex causes the output end of the impeller 20 to generate a circulating flow, and outside the eccentric vortex, the streamline of the airflow in the impeller 20 is arc-shaped. Thus, the flow velocity is not uniform at points on the outer circumference of the impeller 20, the closer to the volute the greater the velocity, and the closer to the volute the lesser the velocity.

In some embodiments, the casing 10 includes a first side wall 101 and a second side wall 102 disposed opposite to each other, and the wind guide member 40 includes: the first air guiding component 41 comprises a first fixing plate 411, a first connecting plate 412 and a first rotating shaft 413, the first air guiding component 41 is arranged on the first side wall 101, and the first fixing plate 411 is fixedly connected with the first side wall 101; a first rotating shaft 413 connected to the first fixing plate 411, the first rotating shaft 413 being provided between the impeller 20 and the first sidewall 101 and being rotatable about its own axis, and a first connecting plate 412 connected to the first rotating shaft 413 and being rotatable about the axis of the first rotating shaft 413;

the second air guiding component 42 includes a second fixing plate 421, a second connecting plate 422 and a second rotating shaft 423, the second air guiding component 42 is disposed on the second sidewall 102, wherein the second fixing plate 421 is fixedly connected to the second sidewall 102, the second rotating shaft 423 is connected to the second fixing plate 421, and the second rotating shaft 423 is disposed between the impeller 20 and the second sidewall 102 and can rotate around its axis; the second connecting plate 422 is connected to the second rotating shaft 423 and rotates about the axis of the second rotating shaft 423.

By adopting the fan provided by the embodiment of the disclosure, the first side wall 101 and the second side wall 102 jointly enclose a wind conveying channel with a first opening and a second opening, the first wind guide part 41 and the second wind guide part 42 are arranged on the first side wall 101 and the second side wall 102 which are opposite, the first wind guide part 41 and the second wind guide part 42 form a part of the wind conveying channel, and the arrangement of the first wind guide part 41 and the second wind guide part 42 can guide the inflow and outflow of air flow. The first fixing plate 411 and the first connecting plate 412 are connected by providing a first rotating shaft 413, and the first connecting plate 412 is driven to rotate around the axis of the first rotating shaft 413. The second fixing plate 421 and the second connecting plate 422 are connected by providing the second rotating shaft 423, and the second connecting plate 422 is driven to rotate around the axis of the second rotating shaft 423.

Alternatively, as shown in fig. 1 and 2, the first fixing plate 411 is a straight plate, the first fixing plate 411 is obliquely disposed on the first side wall 101, and the first connecting plate 412 is an arc-shaped plate having an arc-shaped opening facing the second side wall 102. In this way, wind loss can be reduced while guiding the airflow.

Optionally, a first stepping motor 61 is arranged in the casing 10, the first stepping motor 61 is in driving connection with the first rotating shaft 413, and the rotating angle of the first rotating shaft 413 can be controlled through the first stepping motor 61, so as to control the rotating angle of the first connecting plate 412, and prevent that the rotating angle of the first connecting plate 412 is too large and affects air inlet or air outlet of the fan.

Alternatively, as shown in fig. 1 and 2, the second fixing plate 421 is an arc-shaped plate, an arc opening of the arc-shaped plate faces the first side wall 101, the second connecting plate 422 is a straight plate, and the second connecting plate 422 is vertically disposed opposite to the first volute tongue 12. In this way, wind loss can be reduced while guiding the airflow.

Optionally, a second stepping motor 62 is arranged in the casing 10, the second stepping motor 62 is in driving connection with the second rotating shaft 423, and the rotating angle of the second rotating shaft 423 can be controlled through the second stepping motor 62, so as to control the rotating angle of the second connecting plate 422, and prevent the rotating angle of the second connecting plate 422 from being too large, which affects air inlet or air outlet of the fan.

In some embodiments, the first wind-guiding member 41 and the second wind-guiding member 42 are located on two opposite sides of the straight line of the impeller center and the perpendicular line of the first sidewall 101, or located on two opposite sides of the straight line of the impeller center and the perpendicular line of the second sidewall 102.

Since the relative disposition of the first 101 and second 102 sidewalls of the volute includes both parallel relative disposition and non-parallel relative disposition, when the first 101 and second 102 sidewalls are not parallel relative, two conditions occur: the first wind-guiding component 41 on the first sidewall 101 and the second wind-guiding component 42 on the second sidewall 102 are located on two sides of the straight line where the center of the impeller is located opposite to the perpendicular line of the first sidewall 101, or the first wind-guiding component 41 on the first sidewall 101 and the second wind-guiding component 42 on the second sidewall 102 are located on two sides of the straight line where the center of the impeller is located opposite to the perpendicular line of the second sidewall 102, at this time, a sidewall with a smaller deflection angle than that in the case of parallel opposition is selected as a reference sidewall, and a perpendicular line of the reference sidewall passing through the center of the impeller 20 is selected as a reference line.

With the fan provided by the embodiment of the present disclosure, as shown in fig. 1 and fig. 2, when the flow guiding structure 30 is located at the first flow guiding position, the first air guiding component 41 guides the airflow to flow to the flow guiding structure 30, and the second air guiding component 42 guides the airflow to flow out, so as to improve the air outlet effect of the fan; when the flow guiding structure 30 is located at the second flow guiding position, the second air guiding component 42 guides the air flow to flow towards the flow guiding structure 30, and the first air guiding component 41 guides the air flow to flow out, so as to improve the air outlet effect of the fan.

In some embodiments, the wind turbine further comprises: the first volute tongue 12 is arranged on the first side wall 101, and the first volute tongue 12 and the first air guiding component 41 are positioned on two sides of a straight line where a perpendicular line between the first side wall 101 and the center of the impeller 20 is positioned; the second volute tongue 13 is arranged on the second side wall 102 and connected with the end part of the second air guiding component 42; the first spiral tongue 12 and the second wind-guiding component 42 define a first wind channel 431, the second spiral tongue 13 and the first wind-guiding component 41 define a second wind channel 432, one of the first wind channel 431 and the second wind channel 432 is used for supplying wind, and the other is used for discharging wind.

Referring to fig. 1 and 2, the second volute tongue 13 is disposed on the second side wall 102 and connected to the end of the second wind-guiding component 42, which means that the end of the second wind-guiding component 42 where the second fixing plate 421 is disposed is connected to the second volute tongue 13.

With the fan provided by the embodiment of the present disclosure, as shown in fig. 1 and fig. 2, by providing the first volute tongue 12 and the second volute tongue 13, when the flow guide structure 30 is located at the first flow guide position or the second flow guide position, the eccentric vortex formed by the first volute tongue 12 and the flow guide structure 30 or the second volute tongue 13 and the flow guide structure 30 acting together is more stable than the eccentric vortex formed by the flow guide structure 30 alone. In addition, the arrangement of the first volute tongue 12 and the second volute tongue 13 can also effectively improve the air circulation efficiency, and further improve the performance of the fan.

In some embodiments, the flow directing structure 30 comprises: the first flow guide part 32 comprises a first wall surface 321 and a second wall surface 322, and the distance between the first wall surface 321 and the inner edge of the impeller is smaller than the distance between the second wall surface 322 and the inner edge of the impeller; the second flow guide piece is arranged on one side, away from the first wall surface 321, of the second wall surface 322 and forms a flow guide channel 31 with the second wall surface 322; the flow guide structure 30 is movable relative to the housing 10 between a first flow guide position and a second flow guide position, when the flow guide structure 30 is at the first flow guide position, the first volute tongue 12, the first flow guide piece 32 and the second flow guide piece 33 are sequentially arranged, and the distance between the first flow guide piece 32 and the first volute tongue 12 is smaller than the distance between the first flow guide piece 32 and the second volute tongue 13; when the flow guide structure 30 is at the second flow guide position, the second volute tongue 13, the first flow guide part 32 and the second flow guide part 33 are sequentially arranged, and the distance between the first flow guide part 32 and the second volute tongue 13 is smaller than the distance between the first flow guide part 32 and the first volute tongue 12.

As shown in fig. 1, the flow guide structure 30 is located at the first flow guide position, the first volute tongue 12, the first flow guide member 32, and the second flow guide member 33 are sequentially disposed, an eccentric vortex is formed at the position of the first volute tongue 12 and the flow guide channel 31, the eccentric vortex drives the airflow to flow out from the first air duct 431 under the guidance of the second air guide member 42, at this time, the first air duct 431 is an air outlet duct, and the second air duct 432 is an air inlet duct.

As shown in fig. 2, the flow guide structure 30 is located at the second flow guide position, the second volute tongue 13, the first flow guide element 32, and the second flow guide element 33 are sequentially arranged, an eccentric vortex is formed at the position of the second volute tongue 13 and the flow guide channel 31, the eccentric vortex drives the airflow to flow out from the second air duct 432 under the guidance of the first air guide element 41, at this time, the first air duct 431 is an air inlet duct, and the second air duct 432 is an air outlet duct. By changing the position of the flow guide structure 30, it is also equivalent to selecting a volute tongue matched with the flow guide structure 30, so as to change the flowing direction of the airflow.

Optionally, a drive motor 60 is disposed in the volute, and the flow guide structure 30 is driven by the drive motor 60 to rotate in the impeller 20, so that the flow guide structure 30 rotates relative to the impeller 20 between the first flow guide position and the second flow guide position.

In some embodiments, when the diversion structure 30 is located at the first diversion position, the distance between the first wind-guiding component 41 and the second volute tongue 13 is greater than the distance between the second wind-guiding component 42 and the first volute tongue 12; when the diversion structure 30 is located at the second diversion position, the distance between the first wind-guiding component 41 and the second volute tongue 13 is smaller than the distance between the second wind-guiding component 42 and the first volute tongue 12.

By adopting the fan provided by the embodiment of the disclosure, the flow guide structure 30 moves between the first flow guide position and the second flow guide position relative to the housing 10, the first air guide part 41 and the second air guide part 42 also move along with the movement of the flow guide structure 30, when the flow guide structure 30 is located at the first flow guide position, the first air duct 431 is an air outlet duct, and the second air duct 432 is an air inlet duct, the first air guide part 41 and the second air guide part 42 move to make the air circulation area of the first air duct 431 larger than that of the second air duct 432; when the diversion structure 30 is located at the second diversion position, the first air duct 431 is the air inlet duct, and the second air duct 432 is the air outlet duct, the first air guiding part 41 and the second air guiding part 42 move to make the air circulation area of the second air duct 432 larger than the air circulation area of the first air duct 431. That is to say, after the air guiding structure 30 changes the air outlet direction of the fan, the first air guiding part 41 and the second air guiding part 42 rotate to make the air flow area of the air duct on the air inlet side larger than the air flow area of the air duct on the air outlet side, so as to increase the air inlet area of the fan, prevent the fan from generating counter wind or surge, and improve the air outlet effect of the fan.

In some embodiments, the flow directing structure 30 further comprises: and the plurality of flow guide parts 34 are positioned on one side of the second flow guide part 33, which is far away from the first flow guide part 32, a flow passage 35 is formed between two adjacent flow guide parts 34, and two ends of the flow passage 35 are communicated with the inside of the shell 10 through the impeller 20.

The plurality of flow guide members 34 are all located on one side of the second flow guide member 33 departing from the first flow guide member 32, and as shown in fig. 4, the plurality of flow guide members 34 are all sequentially arranged along the arrangement direction of the second flow guide member 33 departing from the first flow guide member 32. The flow passages 35 are formed between two adjacent flow guiding members 34, that is, the number of the flow passages 35 is plural, and the air flow enters the impeller 20, flows through the flow guiding passage 31 and the plural flow passages 35, and then flows out of the impeller 20. The degree of curvature of the flow passages 35 formed between the plurality of flow guide members 34 is smaller than the degree of curvature of the flow guide passages 31 formed between the first flow guide member 32 and the second flow guide member 33, so that the air flow is facilitated between the plurality of flow guide members 34, and the aerodynamic loss is reduced.

By adopting the fan provided by the embodiment of the disclosure, the arrangement of the plurality of flow guide pieces 34 accords with the flow direction of the eccentric vortex, the air flow influence on the eccentric vortex can be reduced to the greatest extent, and the guiding effect on the air flow is realized, so that the eccentric vortex is further stabilized.

With reference to fig. 1 to 6, an embodiment of the present disclosure provides a household appliance including the blower fan in any one of the above embodiments.

By adopting the household appliance provided by the embodiment of the disclosure, the household appliance comprises the fan in any one of the embodiments, so that the household appliance has all the beneficial effects of the fan in any one of the embodiments, and the description is omitted.

Household appliances include, but are not limited to, air conditioners, air ducts, range hoods, ovens, air purifiers, and the like.

In some embodiments, the household appliance includes an air conditioner, the indoor unit of the air conditioner includes a body 50, the fan is located in the body 50, the body 50 is provided with a first air opening 501 and a second air opening 502, the first air opening 501 is opened along a horizontal direction or is opened upwards, and the second air opening 502 is opened downwards; the first side wall 101 is located above the second side wall 102, and when the flow guide structure 30 is at the first flow guide position, air enters from the second air opening 502 and flows out from the first air opening 501; when the air guide structure 30 is at the second air guide position, air enters from the first air opening 501 and flows out from the second air opening 502.

As shown in fig. 1, the horizontal air outlet is a first air outlet 501, the downward air outlet is a second air outlet 502, when the air conditioner needs cooling, a user wants cold air to blow to the upper part of a room, so as to implement shower-type air supply, because the cold air blowing to the upper part of the room sinks continuously during shower-type air supply, the temperature of the room is rapidly reduced, rather than directly blowing the cold air to the ground, so that the cold air is collected at the lower part of the room, which may cause a phenomenon of cold head heat at feet, and direct blowing may cause discomfort to a person, at this time, the flow guiding structure 30 moves relative to the inner space 202, is located at the first flow guiding position, so that the first volute tongue 12, the first flow guiding member 32, and the second flow guiding member 33 are sequentially arranged, an eccentric vortex is formed at the first volute tongue 12 and the flow guiding channel 31 of the flow guiding structure 30, the air flows from the second air outlet 502 to the inside of the impeller 20 under the guidance of the first air guiding component 41, and the air flowing from the inside of the impeller 20 flows out from the first air outlet 501, and the second air outlet 502 is an air inlet 502, so as to implement shower-type air supply.

As shown in fig. 2, when the air conditioner needs to heat, a user wants to realize carpet air supply, because when the carpet air supply is performed, the density of hot air is low relative to cold air, and hot air blown to the ground continuously floats up to quickly raise the temperature of a room, rather than directly blowing the hot air to the upper part of the room, so that hot air is gathered at the upper part and is difficult to sink, and an uncomfortable feeling of head and foot warming is generated, at this time, the flow guide structure 30 moves relative to the internal space 202 and is located at the second flow guide position, so that the second volute tongue 13, the first flow guide piece 32 and the second flow guide piece 33 are sequentially arranged, an eccentric vortex is formed at the second volute tongue 13 and the flow guide channel 31 of the flow guide structure 30, the gas flows from the first air inlet 501 to the inside of the impeller 20 under the guide of the second flow guide part 42, and the gas flowing from the inside of the impeller 20 under the guide of the first flow guide part 41 flows out from the second air inlet 502, the second air inlet 502 is an air outlet, and the first air inlet 501 is an air inlet, thereby realizing carpet air supply.

By adopting the household appliance provided by the embodiment of the disclosure, the indoor unit of the air conditioner can realize blanket type heating air supply and bath type cooling air supply, and further effectively improve the use experience of users.

In some optional embodiments, the indoor unit of an air conditioner further includes: and a stopper 503 provided in the second air opening 502 and extending in the air flow direction, and abutting against the first connection plate 412 through the stopper 503 to define a rotation angle of the first connection plate 412.

Referring to fig. 1 and 2, the stop member 503 is a long plate, and is disposed at the second air opening 502 along the axial direction of the impeller to guide the air flow, and the stop member 503 is used for abutting against the first connection plate 412 to limit the rotation angle of the first connection plate 412, so as to prevent the rotation angle of the first connection plate 412 from being too large, which may affect the air intake or exhaust of the fan.

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. A fan, comprising:

a housing (10) in which an air duct (43) is formed;

the impeller (20) is rotatably arranged in the air duct (43) and divides the air duct (43) into a first air duct (431) and a second air duct (432), and the impeller (20) defines an inner space (202);

the flow guide structure (30) is arranged in the inner space (202) and defines a flow guide channel (31), the flow guide channel (31) is communicated with the first air duct (431) and the second air duct (432) through the impeller (20), and the flow guide structure (30) moves relative to the inner space (202) to change the air outlet direction of the impeller (20);

the air guide member (40) includes: the air guide component (40) is arranged in the first air channel (431) and/or the second air channel (432) and is positioned outside the impeller (20), and the air circulation area of the first air channel (431) and/or the second air channel (432) is changed by changing the positions of the fixed plate and the rotating plate so as to be switched into an air inlet channel or an air outlet channel.

2. The fan of claim 1,

the casing (10) comprises a first side wall (101) and a second side wall (102) which are oppositely arranged, and the air guiding component (40) comprises:

the first air guiding component (41) comprises a first fixing plate (411), a first connecting plate (412) and a first rotating shaft (413), and is arranged on the first side wall (101), wherein the first fixing plate (411) is fixedly connected with the first side wall (101); the first rotating shaft (413) is connected with the first fixing plate (411), is arranged between the impeller (20) and the first side wall (101) and can rotate around the axis of the impeller, and the first connecting plate (412) is connected with the first rotating shaft (413) and rotates around the axis of the first rotating shaft (413);

the second air guiding component (42) comprises a second fixing plate (421), a second connecting plate (422) and a second rotating shaft (423) and is arranged on the second side wall (102), wherein the second fixing plate (421) is fixedly connected with the second side wall (102), and the second rotating shaft (423) is connected with the second fixing plate (421), is arranged between the impeller (20) and the second side wall (102), and can rotate around the axis of the second rotating shaft; the second connecting plate (422) is connected to the second rotating shaft (423) and rotates about the axis of the second rotating shaft (423).

3. The fan according to claim 2, wherein the first air guiding component (41) and the second air guiding component (42) are located on two opposite sides of a straight line of the impeller center and a perpendicular line of the first side wall (101), or located on two opposite sides of a straight line of the impeller center and a perpendicular line of the second side wall (102).

4. The fan of claim 3, further comprising:

the first volute tongue (12) is arranged on the first side wall (101) and is positioned on two sides of a straight line where a perpendicular line between the first side wall (101) and the center of the impeller is positioned with the first air guide part (41);

the second volute tongue (13) is arranged on the second side wall (102) and is connected with the end part of the second air guiding component (42);

the first air duct (431) is defined by the first spiral tongue (12) and the second air guiding component (42), the second air duct (432) is defined by the second spiral tongue (13) and the first air guiding component (41), one of the first air duct (431) and the second air duct (432) is used for supplying air, and the other one of the first air duct (431) and the second air duct (432) is used for discharging air.

5. The fan according to claim 4, characterized in that the flow guiding structure (30) comprises:

a first flow guide member (32) comprising a first wall surface (321) and a second wall surface (322), wherein the distance between the first wall surface (321) and the inner edge of the impeller (20) is smaller than the distance between the second wall surface (322) and the inner edge of the impeller (20);

the second flow guide piece (33) is arranged on one side, away from the first wall surface (321), of the second wall surface (322) and forms the flow guide channel (31) with the second wall surface (322);

the flow guide structure (30) is movable relative to the housing (10) between a first flow guide position and a second flow guide position, when the flow guide structure (30) is at the first flow guide position, the first volute tongue (12), the first flow guide piece (32) and the second flow guide piece (33) are arranged in sequence, and the distance between the first flow guide piece (32) and the first volute tongue (12) is smaller than the distance between the first flow guide piece (32) and the second volute tongue (13), so that air flows from the second air duct (432) to the first air duct (431);

when the flow guide structure (30) is at the second flow guide position, the second volute tongue (13), the first flow guide piece (32) and the second flow guide piece (33) are sequentially arranged, and the distance between the first flow guide piece (32) and the second volute tongue (13) is smaller than the distance between the first flow guide piece (32) and the first volute tongue (12), so that air flows from the first air channel (431) to the second air channel (432).

6. The fan of claim 5,

when the flow guiding structure (30) is located at the first flow guiding position, the distance between the first air guiding part (41) and the second volute tongue (13) is larger than the distance between the second air guiding part (42) and the first volute tongue (12);

when the flow guide structure (30) is located at the second flow guide position, the distance between the first air guide part (41) and the second volute tongue (13) is smaller than the distance between the second air guide part (42) and the first volute tongue (12).

7. The fan according to claim 5, wherein the flow guiding structure (30) further comprises:

the plurality of flow guide parts (34) are positioned on one side, deviating from the first flow guide part (32), of the second flow guide part (33), a flow channel (35) is formed between every two adjacent flow guide parts (34), and two ends of the flow channel (35) are communicated with the interior of the shell (10) through the impeller (20).

8. A household appliance, characterized in that it comprises: the blower of any one of claims 1-7.

9. Household appliance according to claim 8,

the household appliance comprises an air conditioner, the indoor unit of the air conditioner comprises a machine body (50), the fan is located in the machine body (50), the machine body (50) is provided with a first air port (501) and a second air port (502), the opening of the first air port (501) faces upwards along the horizontal direction or the opening of the first air port, and the opening of the second air port (502) faces downwards;

the first side wall (101) is positioned above the second side wall (102), and when the flow guide structure (30) is in the first flow guide position, air enters from the second air opening (502) and flows out from the first air opening (501); when the flow guiding structure (30) is at the second flow guiding position, air enters from the first air opening (501) and flows out from the second air opening (502).

10. The household appliance according to claim 9, wherein the indoor unit of the air conditioner further comprises:

and a stopper (503) provided in the second tuyere (502) and extending in the air flow direction, and abutting against the first connection plate (412) through the stopper (503) to define the rotation angle of the first connection plate (412).

Images