Bladeless fan

Abstract

The utility model provides a bladeless fan, and particularly relates to the technical field of fans. The bladeless fan comprises a shell and a fan assembly. Wherein the shell comprises a first shell and a second shell, one of the first shell and the second shell is provided with an air inlet, an air outlet is arranged between the first shell and the second shell, and the air inlet is communicated with the air outlet. The fan assembly is located in the shell, and the shell completely covers the fan assembly in the axial direction. Thus, by forming the air inlet in one of the first shell and the second shell and forming the air outlet between the first shell and the second shell, airflow can be accelerated through the air inlet, output of the airflow is amplified, and then stable and uniform airflow is generated. In addition, the fan assembly is arranged in the shell, the blade shape in the fan assembly can be completely hidden from the appearance, the blade-free fan is achieved, the situation that hands of people touch the blades and are injured is avoided, and high safety and stability are achieved.

Description

[0001] This application claims priority to the Chinese patent application No. 202423093078.0, filed on December 14, 2024, entitled "A Bladeless Fan", the content of which is incorporated herein by reference in its entirety;

[0002] This application claims priority to the Chinese patent application No. 202423297651.X, filed on December 27, 2024, entitled "A Bladeless Fan", the content of which is incorporated herein by reference in its entirety;

[0003] This application claims priority to the Chinese patent application No. 202520076459.3, filed on January 13, 2025, entitled "A Bladeless Fan", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0004] The present application relates to the technical field of fans, in particular to a bladeless fan. BACKGROUND

[0005] In recent years, the development of the fan industry in China has been rapid. With the continuous development of technology and the continuous improvement of people's living standards, the demand for fans in all aspects is also getting higher and higher, and a bladeless fan is increasingly promoted to meet people's needs.

[0006] Among them, the bladeless fan is a new type of air circulation equipment, mainly including an impeller and a flow guide device. The fan generates centrifugal force by rotating the impeller to push air from the center outward, and uses the impeller and the flow guide device to accelerate the air and then spray it out of the air outlet of the flow guide device to form a stable air flow.

[0007] However, in the existing bladeless fan, the impeller is usually arranged separately from the flow guide device, the air flow path is too long, the wind power and wind volume are large, and the air outlet effect is not good. CONTENT OF THE INVENTION

[0008] The present application provides a bladeless fan. By arranging the fan assembly in the shell, the blade shape in the fan assembly can be completely hidden from the appearance, realizing the bladeless of the fan, avoiding the hands from touching the blades and causing injury, and having high safety and stability.

[0009] The present application provides a bladeless fan, comprising:

[0010] The shell comprises a first shell and a second shell, one of the first shell and the second shell is provided with an air inlet, and the first shell and the second shell are provided with an air outlet, the air inlet and the air outlet are connected in communication.

[0011] The fan assembly is located in the shell, and the shell completely covers the fan assembly in the axial direction.

[0012] The fan provided by the embodiment of the present application comprises a shell and a fan assembly. One of the first shell and the second shell is provided with an air inlet, and the first shell and the second shell are provided with an air outlet. The air inlet and the air outlet are connected. The fan assembly is located in the shell, and the shell completely covers the fan assembly in the axial direction. In this way, the air inlet is arranged in one of the first shell and the second shell, and the air outlet is arranged between the first shell and the second shell, so that the airflow is accelerated through the air inlet and the air outlet, thereby amplifying the output of the airflow, and further generating stable and uniform airflow. In addition, the fan assembly is arranged in the shell, so that the blade shape in the fan assembly can be completely hidden from the appearance, the fan is realized without blades, the hand of a person is prevented from touching the blade and causing injury, and the fan has high safety and stability.

[0013] In a possible implementation, the first shell comprises a first cover plate and a first shell body. The first cover plate is connected to the first shell body, and the first cover plate and the first shell body have a spacing therebetween. The first shell body is provided with the air inlet, and the first cover plate covers at least part of the air inlet.

[0014] In a possible implementation, the second shell comprises a second cover plate and a second shell body. The second cover plate is arranged at one end of the second shell body, and the other end of the second shell body is matched with the first shell body to form the air outlet.

[0015] In a possible implementation, at the air outlet, the second shell is located on the radial inner side of the first shell, and the radial dimension of the first shell is greater than that of the second shell.

[0016] In a possible implementation, the first shell body has a first arc-shaped structure. One end of the first arc-shaped structure is matched with the inner side wall of the first cover plate to form the air inlet.

[0017] The second shell body has a second arc-shaped structure. The other end of the first arc-shaped structure is matched with the second arc-shaped structure to form the air outlet.

[0018] In a possible implementation, a plurality of guide vanes are further arranged between the inner wall of the first shell body and the outer wall of the second shell body. From back to front, the guide vanes have a bending extension section and a straight section.

[0019] In a possible implementation, the plurality of guide vanes separate the air outlet into a plurality of air outlet cavities.

[0020] In a possible implementation, the fan assembly comprises a driving part and an impeller assembly.

[0021] The impeller assembly comprises a hub connected to the driving part and a plurality of blades arranged at intervals around the outer periphery of the hub.

[0022] In a possible implementation, the air outlet is arranged completely around the radial inner side of the free end of the first shell and completely around the radial outer side of the free end of the second shell.

[0023] Alternatively, the air outlet is arranged at intervals around the radial inner side of the free end of the first shell and at intervals around the radial inner side of the free end of the first shell.

[0024] In a possible implementation, the base and the shell are fixedly connected, and the battery is located in the base.

[0025] Alternatively, the battery is located in the shell.

[0026] In addition to the technical problems solved by the application, the technical features constituting the technical solutions, and the beneficial effects brought by the technical features, other technical problems solved by the application, other technical features included in the technical solutions, and the beneficial effects brought by the technical features will be further described in detail in the specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the application or the prior art. Obviously, the drawings in the following description are only a part of the embodiments of the application, and these drawings and the detailed description are not intended to limit the scope of the application concept in any way, but are intended to explain the application concept to those skilled in the art by referring to specific embodiments. Those skilled in the art can also obtain other drawings according to these drawings without creative effort.

[0028] Figure 1 A structural schematic diagram of the bladeless fan provided by the embodiments of the application;

[0029] Figure 2 A sectional schematic diagram of the bladeless fan provided by the embodiments of the application;

[0030] Figure 3 A structural schematic diagram of the first shell of the bladeless fan provided by the embodiments of the application;

[0031] Figure 4 A structural schematic diagram of the second shell of the bladeless fan provided by the embodiments of the application;

[0032] Figure 5A structural schematic diagram of a desktop bladeless fan provided by an embodiment of the present application;

[0033] Figure 6 A structural schematic diagram of a floor-standing bladeless fan provided by an embodiment of the present application;

[0034] Figure 7 A sectional schematic diagram of another bladeless fan provided by an embodiment of the present application;

[0035] Figure 8 A top view of a centrifugal impeller of a bladeless fan provided by an embodiment of the present application;

[0036] Figure 9 A sectional schematic diagram of still another bladeless fan provided by an embodiment of the present application;

[0037] Figure 10 A structural schematic diagram of an impeller assembly of a bladeless fan provided by an embodiment of the present application;

[0038] Figure 11 A structural schematic diagram of a fixed part of a bladeless fan provided by an embodiment of the present application;

[0039] Figure 12 A sectional schematic diagram of another bladeless fan provided by an embodiment of the present application.

[0040] Explanation of reference numerals:

[0041] 100 - bladeless fan;

[0042] 200 - shell; 210 - first shell; 211 - first cover plate; 212 - first casing; 2121 - first arc-shaped structure; 220 - second shell; 221 - second cover plate; 222 - second casing; 2221 - second arc-shaped structure; 230 - air inlet; 240 - air outlet; 250 - guide fin; 251 - bent extension section; 252 - straight guide section; 260 - groove; 270 - air outlet cavity;

[0043] 300 - fan assembly; 310 - driving part; 320 - impeller assembly; 321 - hub; 322 - blade; 3221 - first arc-shaped arm; 3222 - second arc-shaped arm; 323 - air duct; 324 - recessed structure;

[0044] 400 - base;

[0045] 500 - battery;

[0046] 600 - fixed part; 610 - guide rib; 620 - sound absorption cavity. DETAILED DESCRIPTION

[0047] Clearly, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort are within the protection scope of the present application.

[0048] As described in the background, in the existing bladeless fan, the impeller is usually arranged separately from the flow guide device, the air flow path is too long, the wind power and wind volume are large, and the air outlet effect is poor.

[0049] Alternatively, the impeller can be arranged inside the flow guide device. However, most of the bladeless fans can still see the blade shape of the impeller in the front view or side view, and the blade cannot be completely hidden, and the hand of a person can touch the blade and cause injury, so the safety and aesthetics still need to be improved.

[0050] To solve the above technical problems, the bladeless fan provided by the embodiments of the present application includes a shell and a fan assembly. One of the first shell and the second shell is provided with an air inlet, and the air inlet and the air outlet are connected. The fan assembly is located in the shell, and the shell completely covers the fan assembly in the axial direction. In this way, by arranging the air inlet in one of the first shell and the second shell and the air outlet between the first shell and the second shell, the airflow can be accelerated through the air inlet and the air outlet, thereby amplifying the output of the airflow, and then generating stable and uniform airflow. In addition, the fan assembly is arranged in the shell, and the blade shape in the fan assembly can be completely hidden from the appearance, realizing the bladeless of the fan, avoiding the hand of a person touching the blade and causing injury, and having high safety and stability.

[0051] In order to make the above-mentioned purposes, features and advantages of the embodiments of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort are within the protection scope of the present application.

[0052] The embodiment of the present application provides a bladeless fan. By opening an air inlet in one of the first shell and the second shell and opening an air outlet between the first shell and the second shell, airflow can be accelerated through the air inlet, thereby amplifying the output of the airflow, and further generating stable and uniform airflow. In addition, the fan assembly is arranged in the shell, and the blade shape in the fan assembly can be completely hidden from the appearance, realizing the bladeless of the fan, avoiding the case that the hand of a person touches the blade and causes injury, and having high safety and stability. The specific structure of the bladeless fan provided by the embodiment of the present application will be introduced below with reference to the drawings.

[0053] Reference Figure 1 And Figure 2 The embodiment of the present application provides a bladeless fan 100. Wherein the bladeless fan 100 can include a shell 200 and a fan assembly 300, and the fan assembly 300 can be located in the shell 200. In a possible implementation manner, as shown in Figure 2 The shell 200 can further include a first shell 210 and a second shell 220, wherein one of the first shell 210 and the second shell 220 can be opened with an air inlet 230, and an air outlet 240 can be opened between the first shell 210 and the second shell 220, and the air inlet 230 and the air outlet 240 are communicated, so that the airflow can enter the shell 200 along the air inlet 230, and then flow out of the air outlet 240, realizing air outlet.

[0054] In the embodiment of the present application, as shown in Figure 1 From the appearance of the bladeless fan 100 provided by the embodiment of the present application, the shell 200 can completely cover the fan assembly 300 in the axial direction, so that the fan assembly 300 can be completely arranged inside the shell 200. Since there is no exposed rotating blade, the bladeless fan 100 is more safe when running, avoiding the user from touching the rapidly rotating blade and causing injury.

[0055] On the basis of the above embodiment, wherein in a possible implementation manner, the air inlet 230 can be opened on the first shell 210, and the air outlet 240 can be located in the gap between the first shell 210 and the second shell 220. In another possible implementation manner, the air inlet 230 can also be opened on the second shell 220, and the air outlet 240 can be located in the gap between the first shell 210 and the second shell 220. The embodiment of the present application is not limited here. In the embodiment of the present application, the air inlet 230 is taken as an example to be opened on the first shell 210.

[0056] Continue to refer to Figure 2On the basis of the above-mentioned embodiments, further, the first shell 210 can include a first cover plate 211 and a first casing 212. Wherein the first cover plate 211 can be connected with the first casing 212, and the first cover plate 211 and the first casing 212 can have a certain interval. In the embodiments of the present application, the first casing 212 can be provided with an air inlet 230, and the first cover plate 211 can cover at least part of the air inlet 230. In a possible implementation, the first casing 212 can be provided with an air inlet 230 at one end towards the first cover plate 211, so that the first cover plate 211 can be arranged on at least part of the air inlet 230 of the first casing 212. It can be understood that the first cover plate 211 and the first casing 212 can have an air inlet passage to communicate the outside and the air inlet 230. In addition, the first cover plate 211 can also be provided with a through vent for communicating the outside and the air inlet 230.

[0057] With reference to the above-mentioned embodiments, further, Figure 2 On the basis of the above-mentioned embodiments, further, the second shell 220 can include a second cover plate 221 and a second casing 222. Wherein the second cover plate 221 can be arranged at one end of the second casing 222, and the other end of the second casing 222 can be matched with the first casing 212, thereby forming an air outlet 240. In a possible implementation, the second casing 222 can be located radially inside the first casing 212. It can be understood that at the air outlet 240, the radial dimension of the first casing 212 is greater than the radial dimension of the second casing 222, so that the first casing 212 and the second casing 222 form the air outlet 240.

[0058] It can be understood that in the embodiments of the present application, one end of the first casing 212 is used to match with the air inlet 230, and the other end of the first casing 212 is used to match with the second casing 222 located inside the first casing 212, thereby forming the air outlet 240. In a possible implementation, the gap between the first casing 212 and the second casing 222 can form the air outlet 240, so that the air outlet effect is better.

[0059] With reference to the above-mentioned embodiments, further, Figure 2 On the basis of the above-mentioned embodiments, wherein in a possible implementation, the first casing 212 can have a first arc-shaped structure 2121. Wherein one end of the first arc-shaped structure 2121 can be matched with the inner side wall of the first cover plate 211, thereby forming the air inlet 230. Correspondingly, the second casing 222 can have a second arc-shaped structure 2221, and the other end of the first arc-shaped structure 2121 can be matched with the second arc-shaped structure 2221, thereby forming the air outlet 240.

[0060] With reference to the above-mentioned embodiments, further, Figure 2On the basis of the above-mentioned embodiments, the first arc-shaped structure 2121 can be located at an end of the first shell 212 arranged inwardly, and the first arc-shaped structure 2121 and the inner side wall of the first cover plate 211 form an air inlet 230 through which air flows. In addition, the second arc-shaped structure 2221 can form an air outlet 240 with an end of the first shell 212 arranged outwardly, through which air flows.

[0061] With reference to Figure 2 and Figure 3 On the basis of the above-mentioned embodiments, the bladeless fan 100 can further include a guide vane 250. In one possible implementation, the number of guide vanes 250 can be several, which is not limited in the embodiments of the present application. In the embodiments of the present application, the several guide vanes 250 can be arranged between the inner wall of the first shell 212 and the outer wall of the second shell 222, and the several guide vanes 250 can be arranged in sequence and spaced apart between the inner wall of the first shell 212 and the outer wall of the second shell 222. One end of each guide vane 250 can be fixed to the outer edge of the first shell 212, and the other end of each guide vane 250 can be arranged to be bent towards the adjacent guide vane 250.

[0062] It can be understood that, on the basis of the above-mentioned embodiments, as shown in Figure 3 from back to front, each guide vane 250 can have a bent extension section 251 and a straight guide section 252. It can be understood that, after the air flow entering through the air inlet 230 is rotated by the fan assembly 300, the air flow is thrown to the inner side wall of the first shell 212 by centrifugal force, and then passes through the bent extension section 251 of the guide vane 250, so that the air flow can pass through a smooth transition, and then pass through the straight guide section 252 of the guide vane 250, so that the air flow can gradually change direction without generating too much turbulence or energy loss, facilitating the smooth transition of the air flow from rotational motion to linear motion, so that the bladeless fan 100 realizes air outlet along the air outlet 240.

[0063] With reference to Figure 4 On the basis of the above-mentioned embodiments, recesses 260 are formed on the outer side wall of the second shell 222. In one possible implementation, the number of recesses 260 can be several, which is not limited in the embodiments of the present application. In the embodiments of the present application, each recess 260 can cooperate with each guide vane 250, so that at least part of the guide vanes 250 can be inserted into the recess 260. It can be understood that the cooperation between the guide vanes 250 and the recesses 260 can realize the limiting of the guide vanes 250, and the insertion of part of the guide vanes 250 into the recesses 260 can reserve enough space for the air outlet 240, facilitating air outlet.

[0064] Continuing to refer to Figure 2 , Figure 3 andFigure 4 On the basis of the above-mentioned embodiments, the two adjacent guide vanes 250, the inner side wall of the at least partial first shell 212 and the outer side wall of the at least partial second shell 222 can form an air outlet cavity 270 through which the airflow can pass. Accordingly, the guide vanes 250 interposed between the grooves 260 and the inner side wall of the first shell 212 and the outer side wall of the second shell 222 can form a plurality of air outlet cavities 270, and the plurality of air outlet cavities 270 can form the entire air outlet 240. In this way, the plurality of guide vanes 250 can divide the air outlet 240 into a plurality of air outlet cavities 270, so that the airflow direction is more stable when the airflow flows out through the air outlet 240, avoiding airflow turbulence.

[0065] With continued reference to Figure 2 On the basis of the above-mentioned embodiments, the fan assembly 300 can further include a driving part 310 and an impeller assembly 320. Furthermore, the impeller assembly 320 can include a hub 321 and a plurality of blades 322. In a possible implementation, the number of blades 322 can be a plurality, which is not limited in the embodiments of the present application. In the embodiments of the present application, the hub 321 can be connected to the driving part 310, and the plurality of blades 322 can be sequentially and spacedly arranged around the outer periphery of the hub 321, so that the plurality of blades 322 are arranged in the circumferential direction of the hub 321. It can be understood that the driving part 310 can be used to drive the plurality of blades 322 of the fan assembly 300 to rotate, so that the airflow between the plurality of blades 322 can be transported to the air outlet 240.

[0066] With continued reference to Figure 2 On the basis of the above-mentioned embodiments, a plurality of air passages 323 can be formed between the plurality of spacedly arranged blades 322. Each air passage 323 can be communicated to the air inlet 230 at one end, and communicated to the air outlet 240 at the other end. It can be understood that the airflow can pass through the air inlet 230 and enter the fan assembly 300 along the air passages 323, and the rotation of the impeller assembly 320 driven by the driving part 310 can make the airflow axially entering the fan assembly 300 flow radially along the air passages 323 to the inner side wall of the second shell 222, and then flow out of the air outlet 240 to achieve air outlet.

[0067] With continued reference to Figure 2 On the basis of the above-mentioned embodiments, the air outlet 240 can be completely arranged on the radial inner side of the free end of the first shell 212 and on the radial outer side of the free end of the second shell 222. It can be understood that the air outlet 240 can be arranged in a ring shape between the first shell 212 and the second shell 222.

[0068] With continued reference to Figure 2On the basis of the above-mentioned embodiments, the bladeless fan 100 can further include a base 400. The base 400 can be located at one end of the shell 200, and the base 400 can be fixedly connected with the shell 200, thereby forming a complete bladeless fan 100 structure. It can be understood that the base 400 can be used to support the shell 200, and has a good stabilizing effect. In a possible implementation, due to the arrangement of the base 400 structure, the air outlet 240 can be arranged at the radially inner side of the free end of the first shell 212 in a spaced manner, and at the radially inner side of the free end of the first shell 212 in a spaced manner. In other embodiments, other spacing structures can also be provided.

[0069] On the basis of the above-mentioned embodiments, the bladeless fan 100 can further include an electrical component (not shown in the figure). The electrical component can include a battery 500, a display screen, a control panel and the like. In a possible implementation, the battery 500, the display screen and the control panel and the like can be arranged in the base 400. Alternatively, in another possible implementation, the battery 500, the display screen and the control panel and the like can also be arranged in the shell 200. The embodiments of the present application are not limited herein.

[0070] It can be understood that in the embodiments of the present application, the shape of the bladeless fan 100 is different due to the different shapes of the base 400. In some embodiments, the bladeless fan 100 can include a floor fan, a handheld fan, a desktop fan and the like, wherein, Figure 1 a structure schematic view of a handheld fan, Figure 5 a structure schematic view of a desktop fan, Figure 6 a structure schematic view of a floor fan, and the embodiments of the present application are not limited herein.

[0071] Reference Figure 7 On the basis of the above-mentioned embodiments, the impeller assembly 320 can include a centrifugal impeller. In a possible implementation, when the impeller assembly 320 adopts a centrifugal impeller, in the axial direction, the size of the blade 322 connected to one end of the hub 321 of the centrifugal impeller can be less than or equal to the size of the end of the blade 322 away from the hub 321, so that the height of each blade 322 at both ends is different, thereby forming a recess structure 324 at one end of the hub 321 connected with a plurality of blades 322. The recess structure 324 can correspond to the air inlet 230.

[0072] Continuing to refer to Figure 7 On the basis of the above-mentioned embodiments, it can be understood that in the embodiments of the present application, due to the different heights of the two ends of the blade 322, the entire blade 322 is an inclined structure with the outside higher than the inside, thereby expanding the air inlet area of the airflow and providing more air volume, facilitating air guiding and having a good air suction effect.

[0073] Referring to Figure 7 and Figure 8 On the basis of the above-mentioned embodiments, each of the blades 322 can include a first arc-shaped arm 3221 and a second arc-shaped arm 3222. The first arc-shaped arm 3221 can be fixedly connected with the hub 321, and the second arc-shaped arm 3222 can be located at an end away from the hub 321. The bending direction of the first arc-shaped arm 3221 can be opposite to that of the second arc-shaped arm 3222. From the axial direction, the blade 322 can have an S-shaped structure.

[0074] Referring to Figure 9 On the basis of the above-mentioned embodiments, the impeller assembly 320 can further include a mixed flow impeller. In another possible implementation, when the impeller assembly 320 adopts the mixed flow impeller, the radial dimension of the end of the hub 321 away from the first shell 212 can be greater than the radial dimension of the end of the hub 321 toward the first shell 212, so that the hub 321 has a trumpet shape with an opening toward the second cover plate 221.

[0075] In addition, as Figure 10 shown, a plurality of blades 322 can be sequentially located on the outer side wall of the hub 321. The two ends of each blade 322 can be bent toward opposite directions, respectively, so that each blade 322 has an S-shaped structure, and the blades 322 are arranged in parallel and spaced apart on the hub 321.

[0076] Referring to Figure 11 On the basis of the above-mentioned embodiments, the shell can further include a fixing portion 600. The fixing portion 600 can be located at the end of the mixed flow impeller toward the first shell 212, and the fixing portion 600 can surround the circumferential edge of the blade 322. The fixing portion 600 can be fixedly connected with the first shell 212, so that the fixing portion 600 and the first shell 212 form an integral whole. In one possible implementation, the inner side wall of the fixing portion 600 corresponds to the outer edge of the blade 322.

[0077] Referring to Figure 9 and Figure 11On the basis of the above-mentioned embodiments, the fixed part 600 can be provided with a bone guide 610. In one possible implementation, the number of bone guides 610 can be several, which is not limited in the embodiments of the present application. In the embodiments of the present application, the several bone guides 610 are arranged at intervals in the circumferential direction of the fixed part 600, and the fixed part 600 cooperates with one end of the first shell 212 arranged inwardly to form several sound absorption cavities 620. It can be understood that when the airflow passes through the several sound absorption cavities 620, the noise can be blocked into the sound absorption cavities 620, thereby reducing the transmission of noise sound waves and achieving the effect of reducing noise.

[0078] It can be understood that the airflow generally has the Coanda effect during the flow in the shell 200. It should be noted that when a flow of fluid (such as air or water) flows through a curved surface, it tends to "stick" to the curved surface rather than continue to flow in a straight line. This effect is due to the viscosity and pressure difference of the fluid. When the fluid flows through the curved surface, the fluid on one side of the curved surface has a higher speed and a lower pressure, while the fluid on the other side of the curved surface has a lower speed and a higher pressure, causing the fluid to be "sucked" to the curved surface. In the embodiments of the present application, due to the Coanda effect, the airflow can flow out of the air outlet 240 along the outer surface of the second shell 222, thereby guiding and controlling the flow direction of the airflow.

[0079] On the basis of the above-mentioned embodiments, the flow path of the airflow can be: through the air inlet 230 and into the fan assembly 300 along the air duct 323, drive the rotation of the impeller assembly 320 through the driving part 310, so that the airflow entering the fan assembly 300 in the axial direction flows to the inner side wall of the second shell 222 along the air duct 323 in the radial direction, and then flows out of the air outlet 240, realizing the S-shaped air duct.

[0080] Reference Figure 12 On the basis of the above-mentioned embodiments, in one possible implementation, the first shell 210 can be provided with an air inlet 230, and the other end of the first shell 210 and the second shell 220 are provided with an air outlet 240. In this way, the air inlet 230 and the air outlet 240 can be located at the two ends of the shell 200 in the axial direction, and the air inlet 230 and the air outlet 240 are in communication, so that the airflow can enter the shell 200 along the air inlet 230, and then flow out of the air outlet 240, realizing the straight air duct.

[0081] In the embodiment of the present application, the air inlet 230 in the shape of a ring is formed in one of the first shell 210 and the second shell 220, and the air outlet 240 in the shape of a ring is formed between the first shell 210 and the second shell 220, so that the airflow can be accelerated through the ring-shaped opening 2121, thereby amplifying the output of the airflow, so as to generate stable and uniform airflow. In addition, the fan assembly 300 is arranged in the shell 200, so that the shape of the blade 322 in the fan assembly 300 can be completely hidden from the appearance, realizing the bladeless of the fan, avoiding the case that the hand of a person touches the blade 322 and causes injury, and having higher safety and stability.

[0082] The embodiments or implementations in the specification are described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between the embodiments can be referred to each other.

[0083] It should be noted that the terms "in a specific implementation", "in some embodiments", "in the present embodiment", "exemplarily" and the like in the specification mean that the described embodiments can include specific features, structures or characteristics, but not necessarily every embodiment includes the specific features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when a specific feature, structure or characteristic is described in combination with an embodiment, it is within the knowledge of those skilled in the art to realize such feature, structure or characteristic in combination with other embodiments described explicitly or implicitly.

[0084] Generally, the terms should be understood at least partly by the use in the context. For example, at least partly according to the context, the term "one or more" used in the specification can be used to describe any feature, structure or characteristic in the singular sense, or can be used to describe a combination of features, structures or characteristics in the plural sense. Similarly, at least partly according to the context, terms such as "a" or "said" can be understood to convey singular usage or convey plural usage.

[0085] It should be easily understood that "on", "above" and "over" in the present disclosure should be interpreted in the broadest way, so that "on" not only means "directly on", but also includes the meaning of "on" with intermediate features or layers therebetween, and "above" or "over" not only includes the meaning of "above" or "over", but also can include the meaning of "above" or "over" without intermediate features or layers therebetween (i.e. directly on).

[0086] Moreover, spatially relative terms, such as "beneath", "below", "lower", "above", "upper" and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. The spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0087] In the end it should be stated that further embodiments of the application will occur to those skilled in the art, having regard to the specification and practice of the application disclosed herein. The application is intended to cover any variations, uses or adaptations of the application following, in general, the principles of the application and including such further modifications and features as come within the scope of the application, as can be known, considered or deemed relatively commonplace to the art, not following but included in the present description and drawings and can be apparent to those skilled in the art and, accordingly, can be rendered without departing from the scope of the application which is set out only in the accompanying claims. The scope of the application is limited only by the claims which are appended hereto.

Claims

1. A bladeless fan, characterized by, The application relates to an air conditioner, which comprises the following parts: a housing, which comprises a first housing and a second housing, one of the first housing and the second housing is provided with an air inlet, and the first housing and the second housing are provided with an air outlet, and the air inlet and the air outlet are communicated with each other; a fan assembly, which is located in the housing and is completely covered by the housing in the axial direction.

2. The bladeless fan of claim 1, wherein, The first housing comprises a first cover plate and a first shell, the first cover plate is connected to the first shell, and the first cover plate and the first shell are spaced apart from each other, the first shell is provided with the air inlet, and the first cover plate covers at least part of the air inlet.

3. The bladeless fan of claim 2, wherein, The second housing comprises a second cover plate and a second shell, the second cover plate covers one end of the second shell, and the other end of the second shell is matched with the first shell to form the air outlet.

4. The bladeless fan of claim 3, wherein, At the air outlet, the second shell is located on the radial inner side of the first shell, and the radial dimension of the first shell is greater than that of the second shell.

5. The bladeless fan of claim 4, wherein, The first shell has a first arc-shaped structure, one end of the first arc-shaped structure is matched with the inner side wall of the first cover plate to form the air inlet, and the other end of the first arc-shaped structure is matched with a second arc-shaped structure of the second shell to form the air outlet. The second shell has a second arc-shaped structure, one end of the first arc-shaped structure is matched with the inner side wall of the first cover plate to form the air inlet, and the other end of the first arc-shaped structure is matched with a second arc-shaped structure of the second shell to form the air outlet.

6. The bladeless fan of any of claims 3-5, wherein, A plurality of guide vanes are arranged between the inner wall of the first shell and the outer wall of the second shell, and the guide vanes have a bending extension section and a straight guiding section from back to front.

7. The bladeless fan of claim 6, wherein, The plurality of guide vanes divide the air outlet into a plurality of air outlet cavities.

8. The bladeless fan of any of claims 3-5, wherein, The fan assembly comprises a driving part and an impeller assembly. The impeller assembly comprises a hub and a plurality of blades, the hub is connected to the driving part, and the plurality of blades are arranged on the outer periphery of the hub in a spaced-apart manner.

9. The bladeless fan of claim 3, wherein, The air outlet is completely arranged on the radial inner side of the free end of the first shell and is completely arranged on the radial outer side of the free end of the second shell. Alternatively, the air outlet is arranged on the radial inner side of the free end of the first shell in a spaced-apart manner and is arranged on the radial inner side of the free end of the first shell in a spaced-apart manner.

10. The bladeless fan of claim 1, wherein, The application further relates to the following parts: a base and a battery, the base and the housing are fixedly connected, and the battery is located in the base. Alternatively, the battery is located in the housing.

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