CN218062735U - Air supply structure and air supply device - Google Patents

Abstract

The utility model relates to an air supply structure and air supply arrangement, including two at least casings and two at least fan blades, each casing all link up the setting along setting for the axial, along with setting for the crossing nested direction in axial, each casing is nested and the interval arrangement in proper order, and the casing that is located between every two adjacent casings and is located the center all defines and is formed with the wind channel. A fan blade is mounted within each housing and is configured to direct an air flow through a duct defined by an inner wall of the housing. The air supply structure has the advantages that the air supply modes of at least two different air supply ranges can be realized by matching the air channels with the fan blades supplying air to the air channels, and the large air quantity and large-range air supply can be realized by opening the fan blades or at least two fan blades simultaneously, so that the air supply modes of the air supply structure are richer.

Description

Air supply structure and air supply device

Technical Field

The application relates to the technical field of air supply, in particular to an air supply structure and an air supply device.

Background

The air supply device comprises devices with air supply functions such as an electric fan, an air cooler, an air conditioner and a fan heater, the air supply device generally supplies air by combining rotating fan blades with an air duct, and the existing air supply device can only realize one air supply mode and is single in air supply mode.

SUMMERY OF THE UTILITY MODEL

The air supply structure and the air supply device are provided aiming at the problem that the air supply mode of the existing air supply device is single, and have the technical effect of rich air supply modes.

An air supply structure comprising:

the shell bodies are arranged in a penetrating manner along a set axial direction; along a nesting direction intersecting with the set axial direction, the shells are sequentially nested and arranged at intervals, and an air duct is defined between every two adjacent shells and the shell positioned in the center;

the fan blades are arranged in each shell, and each fan blade is configured to guide air flow to pass through the air channel defined by the inner wall of the shell.

In one embodiment, the flow area of at least one of the air ducts is arranged in a gradient manner along the set axial direction.

In one embodiment, the flow area of one of the two adjacent shells is arranged along the set axial direction in an increasing manner, and the flow area of the other shell is arranged along the set axial direction in a decreasing manner.

In one embodiment, the inner wall of the housing, in which the flow area is arranged in a gradient manner, is configured in a conical manner.

In one embodiment, each of the housings is disposed axially symmetrically with respect to the set axis.

In one embodiment, in every two adjacent shells, along the set axial direction, the projection of the fan blade arranged in the outer shell is a first projection, the projection of the air duct defined by the inner wall of the outer shell is a second projection, and the first projection at least partially falls within the range of the second projection.

In one embodiment, one fan blade is arranged in each shell; each fan blade comprises a rotating part and a plurality of blades, the rotating part is configured to be capable of rotating around the set axial direction, and all the blades are arranged on the rotating part at intervals around the set axial direction;

in the extending direction of each blade, one end of each blade is fixedly connected with the rotating part, and the other end of each blade extends towards the inner wall of the shell until a gap exists between the two ends.

In one embodiment, the air supply structure further includes a front grid, the front grid includes at least two grid portions, and each grid portion is located downstream of each air duct in a one-to-one correspondence manner.

In one embodiment, each of the grid parts comprises a plurality of grid bars, and the rotation directions of the grid bars of at least two grid parts are different.

In one embodiment, the rotating direction of the grid bars of each grid part is the same as or opposite to the rotating direction of the fan blades guiding air to flow through the corresponding air duct.

In one embodiment, all the air ducts include a first air duct whose flow area increases along the set axial direction, and a rotation direction of the grid bars of the grid portion corresponding to the first air duct is the same as a rotation direction of the fan blades guiding air to flow through the first air duct.

In one embodiment, all the air ducts include a second air duct whose flow area decreases progressively along the set axial direction, and the turning direction of the grid bars of the grid part corresponding to the second air duct is opposite to the turning direction of the fan blades guiding air to flow through the second air duct.

In one embodiment, each of the grills has an arc shape.

In one embodiment, the air supply structure further comprises a rear grid, and the rear grid is coupled to one side of the at least two shells in the set axial direction.

In one embodiment, the air supply structure further comprises a connecting piece, and adjacent shells are fixedly connected through the connecting piece.

An air supply device includes the air supply structure described in any one of the above.

In one embodiment, the air supply device is an electric fan.

The air supply structure and the air supply device can realize at least two air supply modes with different air supply ranges by matching each air channel with each fan blade for supplying air to each air channel, and can also realize large-air-volume and large-range air supply by simultaneously starting each fan blade or at least two fan blades. Therefore, the air supply mode of the air supply structure is richer.

Drawings

FIG. 1 is a cross-sectional view of an air delivery structure in some embodiments of the present application;

FIG. 2 is another azimuthal view of the air delivery structure shown in FIG. 1;

FIG. 3 is an exploded view of the air delivery structure shown in FIG. 1;

FIG. 4 is a schematic combination diagram of the housings of the air delivery structure shown in FIG. 1;

FIG. 5 is another orientation view of the structure shown in FIG. 4;

FIG. 6 is a schematic structural view of a front grille of the air supply structure shown in FIG. 1;

FIG. 7 is another azimuthal view of the front grid of FIG. 6.

Description of reference numerals:

100. an air supply structure; 110. a housing; 111. a housing; 111a, a first shell; 111b, a second shell; 112. an inner shell; s, an air duct; s1, a first air duct; s2, a second air duct; 120. a fan blade; 120a, a first fan blade; 120b, a second fan blade; 121. a rotating part; 122. a blade; 130. a front grid; 131. a grid portion; 131a, grid bars; q, air passing holes; 140. a back grid; 150. a connecting member; 160. a motor bracket; 170. a motor; 180. a fan blade bracket; 190. a knob; x, setting an axial direction; y, nesting direction.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The air supply structure provided by the embodiment of the application can be applied to air supply devices with air supply functions, such as electric fans, warm air blowers, air coolers, air conditioners and the like. In order to solve the problem that an air supply mode is single in an existing air supply device, the embodiment of the application provides an air supply structure and an air supply device.

Referring to fig. 1, 2 and 3, an air supply structure 100 provided in some embodiments of the present application includes at least two shells 110 and at least two fan blades 120, each shell 110 is disposed to penetrate along a set axial direction X, each shell 110 is sequentially nested and arranged at intervals along a nesting direction Y intersecting the set axial direction X, and an air duct S is defined between each two adjacent shells 110 and the shell 110 located at the center. Each housing 110 has a fan blade 120 mounted therein, and each fan blade 120 is configured to direct an air flow through a wind path S defined by an inner wall of the housing 110.

Each of the housings 110 is disposed to penetrate along the set axial direction X, which means that each of the housings 110 has a cavity penetrating through itself along the set axial direction X. Each housing 110 may be, but is not limited to being, cylindrical, square cylindrical, or other shaped cylindrical member. Taking each housing 110 as a cylindrical member as an example, the set axial direction X may correspond to the central axis of each housing 110. Each of the housings 110 may be disposed in an axisymmetric manner with respect to the set axial direction X, each of the housings 110 may be disposed in an axisymmetric manner with respect to an axis parallel to the set axial direction X, and each of the housings 110 may have an asymmetric structure, which is not particularly limited.

The nesting direction Y and the setting axis X may be, but are not limited to, in a perpendicular or substantially perpendicular relationship. In general, when the axial direction X is set to be the central axis direction of the housing 110, the nesting direction Y may be the radial direction of the housing 110.

The shells 110 are nested and spaced in sequence along the nesting direction Y, which means that in the nesting direction Y, of two adjacent shells 110, the outer shell 110 is surrounded outside the inner shell 110 and the two shells are spaced in the nesting direction Y to form an air duct S. At this time, the respective housings 110 are arranged in concentric circles in any cross section perpendicular to the set axial direction X.

Referring to fig. 4 and 5, a wind path S is defined between two adjacent housings 110, and the wind path S is defined by an inner wall of the outer housing 110 and an outer wall of the inner housing 110. The center housing 110 is the innermost housing 110 of the entire housings 110, i.e., the housing 110 having the smallest flow area. The central housing 110 itself also encloses an air channel S. Understandably, since each housing 110 is disposed to penetrate along the setting axial direction X, each air passage S formed by each housing 110 is penetrated in the setting axial direction X, that is, each air passage S can allow air to flow from one side to the other side of the setting direction.

The fan blade 120 is a power member capable of generating power to promote the flow of air during the rotation process. The fan blades 120 may be in the form of an axial flow fan blade 120, a centrifugal fan blade 120, an oblique flow fan blade 120, etc., which are conventional components in the art and are not limited herein.

Optionally, the air blowing direction of each fan blade 120 is the same. The same blowing direction means that the fan blades 120 are installed to blow air toward the same side. Taking the embodiment shown in fig. 1 to 3 as an example, the air blowing direction of each fan blade 120 is generally from one side to the other side of all the housings 110 in the set axial direction X. Note that the same blowing direction of each fan means that each fan can blow toward the same side of all the housings 110 in the set axial direction X. Of course, the blowing direction of each fan blade 120 is not limited in the embodiment of the present application.

Each fan blade 120 is used for guiding the air flow through the air channel S defined by the inner wall of the housing 110. The air passage S defined by two adjacent housings 110 is a first air passage S1, and the air passage S defined by the centrally located housing 110 is a second air passage S2. When the housing 110 with the fan blades 120 is sleeved outside the other housing 110, the fan blades 120 are used for guiding air to pass through a first air channel S1 defined by the inner wall of the housing 110. When the fan blades 120 are located in the central housing 110, the fan blades 120 are used for guiding air to pass through the second air channel S2 defined by the inner wall of the central housing 110. It should be understood that, when the fan blades 120 are in operation, most of the air flows along their corresponding air channels S, but there may be some air flowing along other air channels S. The number of the fan blades 120 arranged in each housing 110 may be one or more, and is not limited.

In the embodiment shown in fig. 1 to 5, the air supply structure 100 includes an outer casing 111, an inner casing 112 (i.e., a central casing 110), a first fan blade 120a and a second fan blade 120b, the outer casing 111 is enclosed outside the inner casing 112, a first air duct S1 is defined between an inner wall of the outer casing 111 and an outer wall of the inner casing 112 at an interval, and a second air duct S2 is defined by the inner wall of the inner casing 112. The first fan blade 120a is disposed in the outer casing 111, and the second fan blade 120b is disposed in the inner casing 112. When the first fan 120a operates, air is guided to flow along the first air channel S1. When the second fan 120b operates, the air is guided to flow along the second air channel S2.

In order to realize that each of the blades 120 guides the air to flow through the air passage S defined by the inner wall of the housing 110, the blades 120 may be arranged in the air passage S defined by the inner wall of the housing 110, and when the blades 120 work, negative pressure is mainly generated in the air passage S, so that the air can mainly flow through the air passage S under the action of the negative pressure.

In practical applications, at least two air supply modes with different air supply ranges can be realized by matching each air duct S with each fan blade 120 supplying air to each air duct S, and large-air-volume and large-range air supply can also be realized by simultaneously starting each fan blade 120 or at least two fan blades 120. Thus, the air supply mode of the air supply structure 100 is more abundant.

In some embodiments, the flow area of the at least one air channel S is arranged in a stepwise manner along the set axial direction X. The flow area of the air duct S is an area occupied by the air duct S in a cross section perpendicular to the set axial direction X.

The air passage S defined by two adjacent housings 110 is a first air passage S1, and the air passage S defined by the centrally located housing 110 is a second air passage S2. When the air path S is the second air path S2, the flow area of the air path S can be set gradually by changing the flow area of the centrally-located housing 110 (e.g., the inner housing 112). When the air duct S is the first air duct S1, the gradual change of the flow area of the air duct S can be realized by changing the flow area of the outer casing 110 and/or the size of the outer wall of the inner casing 110. As for changing the flow area of the housing 110 and changing the size of the outer wall of the housing 110 are conventional means in the art, they are not limited and described herein.

When the flow area of the air duct S is increased, the pressure of the air flowing through the air duct S can be reduced, which contributes to the realization of the diffused flow of the air and the realization of the air supply in a wider range. When the circulation area of the air channel S is increased, the pressure of the air passing through the air channel S is gradually increased, so that the air can be boosted, the flowing kinetic energy of the air is improved, and the air supply at a longer distance is realized.

In an embodiment, the flow area of one of the two adjacent housings 110 is gradually increased along the set axial direction X, and the flow area of the other housing 110 is gradually decreased along the set axial direction X.

Typically, the housing 110 is a thin shell that has its own thickness that is consistent throughout. In two adjacent housings 110, when the flow area of the outer housing 110 increases and the flow area of the inner housing 110 decreases, the flow area of the air duct S defined between the outer housing 110 and the inner housing 110 increases gradually (large-range air supply can be achieved, as shown in the embodiment of fig. 1 to 5), and the flow area of the air duct S defined in the inner housing 110 (as the central housing 110) decreases gradually (long-range air supply can be achieved, as shown in the embodiment of fig. 1 to 5).

When the flow area of the outer casing 110 decreases progressively and the flow area of the inner casing 110 increases progressively, the flow area of the air channel S defined between the outer casing 110 and the inner casing 110 decreases progressively (long-distance air supply is realized, and air circulation in the environment is accelerated), and the flow area of the air channel S defined in the inner casing 110 (when the casing 110 is used as the center) increases progressively (large-range air supply is realized, and natural wind effect without wind feeling is realized).

Thus, the gradient of the flow area of the air channels S can be realized, and different air supply modes of two adjacent air channels S can be realized when the inner wall shell 110 is used as the shell 110 at the center.

In particular, in the embodiment, the inner wall of the housing 110, in which the flow area is arranged in a gradient manner, is configured in a conical shape. Understandably, the inner wall of the housing 110, in which the flow area is arranged in a stepwise manner, is arranged around the set axial direction X, and when it is configured in a conical shape, the central axis of the conical shape is parallel to the set axial direction X.

When the inner wall of the housing 110 is conical, the diameter of the housing 110 is linearly changed, and the processing method of the housing 110 is simpler.

Of course, in other embodiments, the inner wall of the casing 110 may also be changed in an arc shape, that is, on any longitudinal section passing through the set axial direction X, the inner wall of the casing 110 is in an arc shape, so that the drift diameter of the casing 110 is gradually changed, and further, the flow area of the casing 110 is gradually changed.

In some embodiments, each housing 110 is disposed axially symmetrically with respect to the set axis X. In this case, each housing 110 is provided as a rotary body with respect to the set axial direction X, and each housing 110 is easily molded. Meanwhile, the shells 110 arranged in a revolving body can ensure that the air channels S defined between the adjacent shells 110 are equal in width at each part of the same cross section, and the air output of the air channels S in each direction is more uniform.

In some embodiments, in every two adjacent housings 110, along the set axial direction X, a projection of the fan blades 120 arranged in the outer housing 110 is a first projection, a projection of the air duct S defined by the inside of the outer housing 110 is a second projection, and the first projection at least partially falls within a range of the second projection.

When the first projection at least partially falls within the range of the second projection, the air sent out by the fan blades 120 can be sent into the corresponding air channel S.

In the embodiment shown in fig. 1 and 2, the air supply structure 100 includes an outer casing 111 and an inner casing 112, the outer casing 111 and the inner casing 112 define a first air duct S1, and the inner casing 112 defines a second air duct S2. The fan blade 120 located in the casing 111 is a first fan blade 120a. In this embodiment, at least a part of the blades 122 of the first fan blade 120a extends to a position opposite to the first air duct S1, and at this time, the first projection of the first fan blade 120a at least partially falls within the second projection range of the first air duct S1. In other embodiments, the fan blades 120 located in the housing 111 may also be directly disposed in the first air duct S1, and the first projection of the fan blades 120 is located in the first air duct S1.

When the first projection of each fan blade 120 is at least partially located within the range of the second projection of the corresponding air duct S, most of the air sent out by the fan blade 120 can pass through the corresponding air duct S, which is beneficial to realizing independent air supply of each air duct S.

Specifically, referring to fig. 1 and 2, a fan blade 120 is disposed in each housing 110. Each of the blades 120 includes a rotating portion 121 and a plurality of blades 122, the rotating portion 121 is configured to be rotatable around a set axial direction X, and all the blades 122 are disposed at intervals around the set axial direction X on the rotating portion 121. In the extending direction of each blade 122, one end of each blade 122 is fixed to the rotating portion 121, and the other end extends toward the inner wall of the housing 110 until a gap exists therebetween.

The rotating part 121 may be a rotating base, which is in transmission connection with a power mechanism (e.g., the motor 170) and rotates under the driving of the power mechanism. Each blade 122 may be integrally formed and then fixed to the rotating portion 121, or may be fixed to the rotating portion 121.

The rotating rotor 121 rotates the blades 122 to cause the air to flow in its own blowing direction. Since the air flows fastest at the edge of the blade 122 (close to the inner wall of the housing 110), more air can enter the corresponding air passage S as the edge of the blade 122 extends toward the inner wall of the housing 110. At this time, since blades 122 extend toward the inner wall of casing 110, the length of blades 122 is long, wind force by rotation of blades 122 is large, and the amount of air blown by air blowing structure 100 is large.

In a further embodiment, referring to fig. 1 to fig. 3, the blowing structure 100 further includes a motor 170 and a motor bracket 160, the motor bracket 160 is coupled to the peripheral casing 110, the motor 170 is mounted on the motor bracket 160, and the rotating portion 121 of the fan blade 120 located in the peripheral casing 110 is in transmission connection with the motor 170. At this time, the motor 170 drives the rotation part 121 to rotate, and the structure is simple. The other blades 120 may also be independently driven by the motor 170, which is configured in a conventional manner in the art, and is not limited herein.

Further, each blade 122 may be locked to the rotating portion 121 by a knob 190, which is a conventional arrangement in the art and is not limited thereto.

In some embodiments, referring to fig. 1, fig. 2, fig. 6 and fig. 7, the air supply structure 100 further includes a front grid 130, the front grid 130 includes at least two grid portions 131, and each grid portion 131 is located downstream of each air duct S in a one-to-one correspondence manner.

In the embodiments of the present application, the terms "downstream" and "upstream" refer to the positional relationship in the air flow path. The grid portions 131 are located downstream of the corresponding air ducts S, and the air flows through the air ducts S to the grid portions 13 and is then discharged to the outside of the air supply structure 100.

Each of the grill portions 131 has a mesh structure and has air holes q. The air is blown out through the air passing holes q while passing through the respective grill portions 131. The air holes q can disturb air to a certain extent, and air supply range of the air can be properly enlarged.

When the grid portions 131 are arranged around the set axial direction X, they may be disposed in an axisymmetric manner with respect to the set axial direction X, or may not be disposed in an axisymmetric manner, specifically, they are set following the shape of the outlet end of the air duct S, and are not limited herein. For example, when the outlet end of the air duct S corresponding to the grid portion 131 is eccentrically disposed with respect to the set axial direction X, the grid portion 131 is also eccentrically disposed with respect to the set axial direction X accordingly.

Meanwhile, each grid part 131 can prevent external things (such as users) from extending into each air channel S, and prevent the external things from damaging the fan blades 120. Meanwhile, the air blown out from each air duct S can be sent out from the opposite grid portions 131, and different air supply modes can be realized by arranging the grid portions 131 with different structures, which is helpful for enriching the air supply modes of the air supply structure 100.

It should be noted that each grid portion 131 may be correspondingly coupled to the corresponding housing 110 corresponding to the outlet of each air duct S, may be coupled to any one of the housings 100 in all the housings 110 after being connected to each other, or may be coupled to other components, and the specific arrangement manner is not limited.

In an embodiment, each grid portion 131 includes a plurality of grids 131a, and the rotation directions of the grids 131a of at least two grid portions 131 are different.

One end of each of the grid bars 131a close to the set axial direction X is a first end thereof, and the other end thereof is a second end thereof, and the first ends of all the grid bars 131a of each grid part 131 are located on a line segment (defined as a collinear segment). When the second end of each grid 131a is located on the left side of a normal line segment passing through the first end of each grid 131a and perpendicular to the common line segment, viewed from an angle that the set axial direction X points to the blowing direction of the blowing structure 100 in a plane perpendicular to the set axial direction X, the rotation direction of the grid 131a is left-handed, and conversely, the rotation direction of the grid 131a is right-handed.

When all the grills 131a of each grill portion 131 are arranged around the direction parallel to the set axial direction X, the first ends of all the grills 131a of each grill portion 131 are located on the same circumference.

Understandably, air passing holes q are formed between the adjacent grills 131a of each grill portion 131. Each of the grills 131a in the same grille part 1 has a flow guide surface for guiding the flow direction of the air. The flow guide surface can be a plane, a curved surface and the like, and can be set according to actual requirements.

When the grating portions 131 include only two, the rotation directions of the grating strips 131a of the two grating portions 131 are different. When the grating portions 131 include more than two grating portions, the rotation direction of the grating 131a of the partial grating portion 131 may be left-handed, and the rotation direction of the grating 131a of the partial grating portion 131 may be right-handed; further, the turning direction of the bars 131a of the partial grating part 131 is 45 degrees left-handed, the turning direction of the bars 131a of the partial grating part 131 is 45 degrees right-handed, and the turning direction of the bars 131a of the partial grating part 131 is 5 degrees left-handed. The specific arrangement of the rotation direction of the grill 131a of each grill portion 131 is not limited as long as there are at least two grill portions 131 in which the grill 131a rotates.

It should be noted that each of the grills 131a may have an arc shape, a straight line shape, or the like, as long as the whole has a certain rotational direction.

The grills 131a serve to send out air in their own spiral direction. When the rotation directions of the grid bars 131a of the grid part 131 are different, the air supply in different directions of the air ducts S can be realized, and the air supply manner of the air supply structure 100 can be enriched.

In some embodiments, the grid bars 131a of each grid portion 131 have the same or opposite rotation direction as the rotation direction of the fan blades 120 guiding the air flowing through the corresponding air duct S.

Correspondingly, the rotation direction of the fan blades 120 is also confirmed by an angle that the set axial direction X points to the air supply direction of the air supply structure 100, the rotation direction corresponding to the fan blade 120 rotating counterclockwise is a right rotation, and the rotation direction corresponding to the fan blade 120 rotating clockwise is a left rotation.

When the rotation direction of the grid bars 131a is the same as that of the fan blades 120, the air reaches the grid bars 131a from the fan blades 120, and then is blown out from the grid bars 131a, the air is diffused towards two sides of the air supply structure 100, which is beneficial to realizing large-range air supply. When the rotation direction of the grid bars 131a is opposite to that of the fan blades 120, air reaches the grid bars 131a from the fan blades 120, and then the air is blown out from the grid bars 131a, so that the pressure of the air can be increased, the air can be conveyed for a longer distance along the air supply direction, and the long-distance air supply is facilitated.

Preferably, in the embodiment, each of the grills 131a has an arc shape. The arc-shaped grills 131a help to reduce the wind resistance thereof, so that the air can flow farther.

In other embodiments, the bars 131a in each grid portion 131 may be staggered to form a grid.

In an embodiment, referring to fig. 1, fig. 2, fig. 6 and fig. 7, all the air ducts S include a first air duct S1 whose flow area increases along the set axial direction X, and the turning direction of the grid 131a of the grid portion 131 corresponding to the first air duct S1 is the same as the turning direction of the fan blade 120 guiding the air flowing through the first air duct S1.

As can be seen from the above embodiments, the first air duct S1 can reduce the pressure of the air flowing through the first air duct S1, and the air has a flowing tendency of diffusing outward. As can be seen from the above description, when the rotation direction of the grid 131a of the grid portion 131 corresponding to the first air duct S1 is the same as the rotation direction of the corresponding fan blade 120, the effect of enhancing the outward expansion of air is also provided, and at this time, the first air duct S1 with gradually increased flow area is combined with the fan and the grid 131a with the same rotation direction, so that the air discharged from the grid portion 131 corresponding to the first air duct S1 has the air outlet effect in a wider range, the air outlet range is increased, the air kinetic energy is smaller, the air outlet mode with natural wind sensation can be realized, and the cooling of the human body can be more comfortable.

Specifically, in the embodiment, all the air ducts S include the second air duct S2 having a flow area decreasing progressively along the set axial direction X, and the turning direction of the grid bars 131a of the grid portion 131 corresponding to the second air duct S2 is opposite to the turning direction of the fan blades 120 guiding the air to flow through the second air duct S2.

As is apparent from the above description of the embodiment, the second air path S2 can increase the pressure of the air flowing through the second air path S2 as the flow area of the second air path S2 increases in the set axial direction X. As can be seen from the above description, the rotating direction of the grid bars 131a of the grid part 131 corresponding to the second air duct S2 is opposite to the rotating direction of the fan blades 120 corresponding to the second air duct S2, and the pressure of the air can also be increased. The larger the air pressure, the larger the kinetic energy, and the longer the conveying distance. At this time, the pressurization of the second air duct S2 and the pressurization of the grid portion 131 are combined, so that the kinetic energy of the air can be increased to a greater extent, the transportation at a longer distance is realized, and the air circulation of the environment in which the air duct S is located can be accelerated.

In some embodiments, referring to fig. 1, fig. 2, fig. 6 and fig. 7, all the grid portions 131 are coaxially arranged with respect to the set axis X, and all the grid portions 131 are sequentially sleeved and connected along the nesting direction Y.

Each grid portion 131 is coaxially arranged with respect to the set axial direction X, which means that each grid portion 131 takes the set axial direction X as its central axis. Each grid portion 131 is sequentially sleeved and connected along the nesting direction Y, which means that in the nesting direction Y, of two adjacent grid portions 131, the outer grid portion 131 is surrounded and arranged outside the inner grid portion 131, and the two grid portions are kept connected.

Understandably, all the grid portions 131 correspond to all the air ducts S one to one in the nesting direction Y. The first air channel S is corresponding to the first grid part 131, the second air channel S is corresponding to the second grid part 131, the third air channel S is corresponding to the third grid part 131, \ 8230, and so on. The corresponding grid portions 131 and the air ducts S are arranged opposite to each other in the set axial direction X, and the air blown out from each air duct S is sent out through the opposite grid portion 131.

In the embodiment shown in fig. 1 to 7, the grid portion 131 includes two air ducts S, each air duct S includes a first air duct S1 and a second air duct S2, the first air duct S1 is disposed opposite to the outer grid portion 131, and the second air duct S2 is disposed opposite to the inner grid portion 131.

At this time, the grille parts 131 are connected to form a whole, so that the front grille 130 is convenient to mount, the appearance is attractive, and the air blowing amount of each grille part 131 in each direction is consistent. In some embodiments, the air supply structure 100 further includes a rear grill 140, and the rear grill 140 is coupled to one side of the at least two housings 110 in the set axial direction X.

The rear grill 140 has a mesh-like structure, and air can enter the air supply structure 100 through the meshes of the rear grill 140. The rear grid 140 is disposed to prevent external objects (e.g., users) from extending into the air supply structure 100 and damaging the external objects and the fan blades 120. Of course, the rear grids 140 may have the same structure as the front grids 130, which will not be described in detail. Understandably, the rear grid 140 and the front grid 130 are located on different sides of each housing 110 in the set axial direction X.

In an embodiment, referring to fig. 1 and fig. 2, the housing located at the outermost periphery includes a first housing 111a and a second housing 111b, the first housing 111a and the second housing 111b surround to form a weight-reducing cavity, the first housing 111a is located inside the second housing 111b to define an air duct S with the adjacent housing 110; the first shell 111a is configured with clamping portions on both sides in the setting axial direction X, and the front grid 130 and the rear grid 140 are clamped on the first shell 111a via the clamping portions respectively. The clamping portion can be in the form of a clamping groove, a clamping protrusion, a clamping concave hole and the like, and is not limited specifically. The front grid 130 and the rear grid 140 are clamped with the first shell 111a, so as to facilitate disassembly and assembly, and meanwhile, the first shell 111a and the second shell 111b surround to form a weight reduction cavity, so that the weight and the consumption of consumables of the outermost shell 110 can be reduced.

It should be noted that the fan blades 120 located in each casing 110 may be disposed near the front grid 130, near the rear grid 140, or at other positions. In the embodiment shown in fig. 1 to 5, the fan blades 120 are disposed near the rear grid 140, which is beneficial to the layout of the shells 110.

In some embodiments, the air supply structure 100 further includes a connector 150, and the adjacent housings 110 are fixedly connected to each other via the connector 150. The connecting member 150 may be a connecting strip, a connecting column, or other members that occupy a small space, so as to reduce the resistance of the connecting member 150 to air. The connecting member 150 and the housing 110 may be integrally connected, or may be fixedly connected by welding, bonding, hot-melt connection, fastening connection, or the like. Alternatively, the adjacent housings 110 are fixedly connected by a plurality of connecting members 150, and the plurality of connecting members 150 are arranged around the set axial direction X at intervals to achieve stable connection between the housings 110. At this time, the shells 110 are connected in sequence through the connecting member 150, and the fan blades 120, the front grids 130 and the rear grids 140 can be assembled on the shells 110 after the shells 110 can be connected to form a whole, so that the air supply structure 100 is convenient to assemble.

In an embodiment of the present application, the blowing structure 100 includes an outer casing 111, an inner casing 112, a first blade 120a and a second blade 120b, the outer casing 111 surrounds the inner casing 112 in a set axial direction X, the first blade 120a is disposed in the outer casing 111, the second blade 120b is disposed in the inner casing 112, a first air duct S1 is formed between the outer casing 111 and the inner casing 112, and a second air duct S2 is formed in the inner casing 112. The air supply structure 100 further includes a front grid 130, the front grid 130 includes two grid portions 131 sleeved with each other around a set axial direction X, one of the grid portions 131 corresponds to the first air duct S1 and is opposite to the first air duct S1 in the set axial direction X, and a rotation direction of a grid 131a of the front grid portion is the same as a rotation direction of the first fan blade 120a. The other grid part 131 corresponds to the second air duct S2 and is opposite to the second air duct S2 in the set axial direction X, and the rotation direction of the grid 131a is opposite to that of the second fan blade 120 b.

When the first fan blade 120a is turned on, air is blown out through the first air duct S1 and the corresponding grid portion 131, and an air outlet range is wide, so that an air outlet mode of natural air can be realized. When the second fan blade 120b is turned on, air is blown out through the second air duct S2 and the corresponding grid portion 131, and a larger air outlet distance is provided, so that air circulation in the environment can be accelerated, and a circular air outlet mode can be realized. When the first fan blade 120a and the second fan blade 120b are opened simultaneously, large air volume can be output, and not only can rapid cooling be realized, but also air circulation can be accelerated. Thus, the air supply structure 100 has multiple different air supply modes, the air supply modes are more abundant, and multiple use requirements of users can be met.

In addition, the embodiment of the present application further provides an air supply device, and the air supply device includes the air supply structure 100. It has all the advantages of the above-mentioned air supply structure 100, which are not described herein.

In one embodiment, the air blowing device is an electric fan. Of course, the air supply device may be a warm air blower, an air cooler, an air conditioner, or the like.

All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (18)

1. An air supply structure, characterized by comprising:

at least two housings (110), each housing (110) being provided to penetrate along a set axial direction (X); along a nesting direction (Y) intersecting with the set axial direction (X), the shells (110) are sequentially nested and arranged at intervals, and an air duct (S) is defined between every two adjacent shells (110) and the shell (110) located in the center;

at least two blades (120), each housing (110) having the blade (120) mounted therein, each blade (120) being configured to guide an air flow through the air channel (S) defined by the inner wall of the housing (110).

2. The air supply structure according to claim 1, wherein a flow area of at least one of the air ducts (S) is arranged in a stepwise manner along the set axial direction (X).

3. The air supply structure according to claim 2, wherein the flow area of one of the adjacent two casings (110) is gradually increased along the set axial direction (X), and the flow area of the other casing (110) is gradually decreased along the set axial direction (X).

4. The air supply structure according to claim 3, characterized in that an inner wall of the casing (110) in which the flow area is arranged in a stepwise manner is configured in a conical shape.

5. The air supply structure according to claim 1, wherein each of the housings (110) is disposed axially symmetrically with respect to the set axial direction (X).

6. The air supply structure according to claim 1, wherein in every two adjacent housings (110), along the set axial direction (X), a projection of the fan blade (120) arranged in the outer housing (110) is a first projection, and a projection of the air duct (S) defined by an inner wall of the outer housing (110) is a second projection, and the first projection at least partially falls within a range of the second projection.

7. The structure of claim 6, wherein one of said blades (120) is disposed in each of said housings (110); each fan blade (120) comprises a rotating part (121) and a plurality of blades (122), the rotating part (121) is configured to be capable of rotating around the set axial direction (X), and all the blades (122) are arranged on the rotating part (121) at intervals around the set axial direction (X);

in the extending direction of each blade (122), one end of each blade (122) is fixedly connected with the rotating part (121), and the other end extends towards the inner wall of the shell (110) to form a gap between the two ends.

8. An air supply structure according to any one of claims 1 to 7, characterized in that the air supply structure (100) further includes a front grille (130), the front grille (130) includes at least two grille portions (131), and each grille portion (131) is located downstream of each air duct (S) in a one-to-one correspondence.

9. The air supply structure according to claim 8, wherein each of the grille parts (131) includes a plurality of grillwork (131 a), and the grillwork (131 a) of at least two of the grille parts (131) has different directions of rotation.

10. The structure of claim 9, wherein the grillwork (131 a) of each grill portion (131) has a same or opposite direction of rotation to the fan blades (120) guiding the air through the corresponding air duct (S).

11. The blowing structure according to claim 10, wherein all the air ducts (S) include a first air duct (S1) having a flow area that increases in the set axial direction (X), and a turning direction of the grill (131 a) of the grill portion (131) corresponding to the first air duct (S1) is the same as a turning direction of the fan blade (120) that guides air flowing through the first air duct (S1).

12. The blowing structure according to claim 10, wherein all the air ducts (S) include a second air duct (S2) having a flow area decreasing in the set axial direction (X), and a turning direction of the grill (131 a) of the grill portion (131) corresponding to the second air duct (S2) is opposite to a turning direction of the fan blade (120) guiding air flowing through the second air duct (S2).

13. The air supply structure according to claim 9, wherein each of the grills (131 a) has an arc shape.

14. The air supply structure according to claim 8, wherein all of the grille portions (131) are coaxially arranged with respect to the set axial direction (X), and all of the grille portions (131) are sequentially connected in a nested manner along the nesting direction (Y).

15. An air supply structure (100) according to claim 1, wherein the air supply structure (100) further comprises a rear grille (140), the rear grille (140) being coupled to one side of the at least two casings (110) in the set axial direction (X).

16. An air supply structure (100) according to claim 1, wherein the air supply structure (100) further comprises a connector (150), and adjacent housings (110) are fixedly connected via the connector (150).

17. An air supply arrangement, characterized in that it comprises an air supply structure (100) according to any one of claims 1-16.

18. The air supply arrangement of claim 17, wherein the air supply arrangement is an electric fan.

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