A new type of bladeless fan

Abstract

This utility model discloses a novel bladeless fan, including a shell assembly, a centrifugal impeller, a motor, and a base assembly. The shell assembly includes a rear shell, a main shell, and a front shell. One end of the main shell has an air inlet and is detachably connected to the rear shell, while the other end is connected to the front shell. The front end of the front shell has an annular air outlet. A motor connected to the centrifugal impeller is housed within the inner cavity of the front and main shells. A funnel-shaped guide ring is provided inside the air inlet. The larger end of the guide ring smoothly transitions to the air inlet, while the smaller end extends into the guide ring of the centrifugal impeller and is a radially outward-curved arc end. The air inlet end of the guide ring is a radially curved arc end near the back of the smaller end of the guide ring. This utility model ensures that all air from the axial air inlet enters the centrifugal impeller, solving the problem of pressure relief at the air inlet end of the centrifugal impeller. It features an air inlet structure that conceals the interior and prevents debris from entering, providing excellent protection and possessing both design aesthetics and functionality.

Description

Technical Field

[0001] This utility model relates to the field of ventilation equipment technology, and in particular to a novel bladeless fan. Background Technology

[0002] Due to the limitations of the centrifugal impeller structure in existing bladeless fans, the outer side of the axial air inlet and the radial air outlet are directly connected. This causes some of the air intake to be directly diverted to the radial air outlet along the outer side of the air inlet, resulting in pressure relief at the air inlet. This reduces the suction force at the air inlet of the bladeless fan and affects its air output performance.

[0003] In addition, since the air inlet grille of the casing is located at the air inlet end of the centrifugal impeller, users can directly see the internal structure of the bladeless fan. This not only makes it easy for debris, wires, dust and other impurities to pass directly through the air inlet grille into the centrifugal impeller, causing damage to the centrifugal impeller, but also makes the overall design less aesthetically pleasing.

[0004] Therefore, in order to solve the above problems, it is necessary to develop a new type of bladeless fan that ensures that all the air from the axial air intake end enters the centrifugal impeller, solves the problem of pressure relief at the air intake end of the centrifugal impeller, and improves the air intake strength, suction, air output strength, and wind speed. It is equipped with an air intake structure that can hide the interior and prevent debris from entering, providing excellent protection and having a sense of design and aesthetics. Utility Model Content

[0005] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0006] A novel bladeless fan includes a housing assembly, a centrifugal impeller, a motor, and a base assembly.

[0007] The component is characterized by:

[0008] The housing assembly includes a rear housing, a main housing, and a front housing;

[0009] The main housing has an air inlet at one end and is detachably connected to the rear housing, while the other end is connected to the front housing.

[0010] The front end of the front housing is provided with an annular air outlet, and an inner cavity is formed between the front housing and the main housing that communicates with the annular air outlet and the air inlet.

[0011] The inner cavity is equipped with a motor that is fixedly connected to the front housing. The drive end of the motor faces the air inlet and is connected to the centrifugal impeller.

[0012] The air inlet is provided with a funnel-shaped airflow guide ring;

[0013] The large end of the flow guide ring is smoothly connected to the air inlet, and the small end extends into the flow guide ring of the centrifugal impeller, and is an arc-shaped end that bends radially outward.

[0014] The inner diameter of the air inlet end of the guide ring is larger than the outer diameter of the small end of the guide ring, and the air inlet end is an arc-shaped end that is radially bent towards the back of the small end of the guide ring.

[0015] Preferably, the front housing comprises an integrally molded outer shell and an inner cover;

[0016] The annular air outlet is formed between the front end of the outer shell and the opening of the inner cover, and the rear end of the outer shell is connected to the main shell.

[0017] The outer surface of the bottom of the inner cover is provided with an installation cavity that protrudes toward the annular air outlet.

[0018] The inner chamber is located in the outer region of the centrifugal impeller, forming an air duct with an inner diameter that gradually decreases towards the annular air outlet.

[0019] Preferably, the rear housing is a cover-shaped structure, the cover end of the rear housing is detachably connected to the main housing, and the cover surface of the rear housing is inclined downwards.

[0020] Preferably, the cover of the rear housing is a honeycomb mesh structure, and a detachable inner mesh plate is provided inside the rear housing;

[0021] The inner mesh plate is a honeycomb mesh plate, and the inner mesh plate is set perpendicular to the drive shaft of the motor.

[0022] Preferably, the inner mesh plate is detachably snapped into the outer shell.

[0023] Preferably, a connecting ring is provided at the opening of the rear housing;

[0024] The main housing has an annular rib on the outer surface of the air inlet.

[0025] The connecting ring is sleeved on the outside of the annular protrusion;

[0026] The connecting ring is magnetically and quickly attached to the air inlet surface of the main housing.

[0027] Preferably, the base assembly includes a rotating part, a telescopic rod, and a base plate arranged sequentially from top to bottom.

[0028] Preferably, a retaining ring is provided on the outer side of the arc-shaped end of the drainage ring; the arc-shaped end of the guide ring is located between the arc-shaped end of the drainage ring and the retaining ring.

[0029] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0030] 1. Due to the structural design of the flow guide ring and the flow deflector, the flow guide ring is smoothly connected to the edge of the air inlet. Compared with the existing technology, this reduces the obstruction of the airflow and improves the air intake effect and air volume of the air inlet.

[0031] 2. At the same time, the flow guide ring extends into the flow guide ring and forms a non-contact seal with the flow guide ring. Compared with the existing technology, the structure is simple and easy to assemble. It can prevent the air in the air inlet from flowing out of the centrifugal impeller from the gap between the flow guide ring and the flow guide ring, ensuring that all the air at the axial air inlet end enters the centrifugal impeller, solving the problem of pressure relief at the air inlet end of the centrifugal impeller, and improving the air inlet strength and suction, as well as the air outlet strength and wind speed.

[0032] 3. Due to the inclined design of the rear casing cover and the vertical design of the inner mesh plates with a certain distance between them, the resulting cross mesh holes can produce a double refraction effect, reducing the light transmittance and making the internal impeller invisible to the naked eye at a distance of 50cm from the fan, thus making the bladeless fan more aesthetically pleasing and design-oriented.

[0033] 4. Due to the inclined design of the rear shell cover and the vertical design of the inner mesh panels with a certain distance between them, when a thread / hair enters from the rear shell, it first passes through the mesh of the cover to deflect the direction of movement, and then gets stuck on the mesh of the inner mesh panel. Moreover, the double-layered design can block large particles and improve the ability to prevent debris from entering. Attached Figure Description

[0034] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0035] Figure 2 This is an exploded view of the present invention;

[0036] Figure 3 This is the front view of the present invention;

[0037] Figure 4 This is a schematic diagram of the cross-sectional structure of AA in Figure 3;

[0038] Figure 5 for Figure 4 Enlarged view of a section at point B;

[0039] The components include: outer shell assembly 1, centrifugal impeller 2, motor 3, base assembly 4, inner mesh plate 5, snap-fit ​​structure 6, first magnetic component 7, second magnetic component 8, rear shell 11, main shell 12, front shell 13, air inlet 10, annular air outlet 20, mounting cavity 30, air duct 40, guide ring 21, rotating part 41, telescopic rod 42, base plate 43, cover 111, connecting ring 112, diversion ring 122, annular rib 123, outer shell 131, and inner cover 132. Detailed Implementation

[0040] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0041] It should be noted that when a component is said to be "fixed" to another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected" to another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "front," "back," "left," "right," "up," "down," and similar expressions used in this document are for illustrative purposes only.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0043] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments:

[0044] like Figure 1-4 As shown, a novel bladeless fan includes a housing 131 assembly 1, a centrifugal impeller 2, a motor 3, and a base assembly 4. The housing 131 assembly 1 includes a rear housing 11, a main housing 12, and a front housing 13.

[0045] The main housing 12 has an air inlet 10 at one end and is detachably connected to the rear housing 11, and the other end is connected to the front housing 13;

[0046] The front end of the front housing 13 is provided with an annular air outlet 20, and an inner cavity is formed between the front housing 13 and the main housing 12, which is connected to the annular air outlet 20 and the air inlet 10.

[0047] The inner cavity is provided with a motor 3 that is fixedly connected to the front housing 13. The drive end of the motor 3 faces the air inlet 10 and is connected to the centrifugal impeller 2.

[0048] The air inlet 10 is provided with a funnel-shaped airflow guide ring 122;

[0049] The large end of the flow guide ring 122 is smoothly connected to the air inlet 10, and the small end extends into the flow guide ring 21 of the centrifugal impeller 2, and is an arc-shaped end that bends radially outward.

[0050] The inner diameter of the air inlet end of the guide ring 21 is larger than the outer diameter of the small end of the guide ring 122, and the air inlet end is an arc-shaped end that is radially bent toward the back of the small end of the guide ring 122.

[0051] In this embodiment, due to the structural design of the flow guide ring 122 and the flow guide ring 21, the flow guide ring 122 is smoothly connected to the edge of the air inlet 10. Compared with the prior art, this reduces the obstruction of the airflow and improves the air intake effect and air volume of the air inlet 10.

[0052] At the same time, the guide ring 122 extends into the guide ring 21 and forms a non-contact seal with the guide ring 21. Compared with the existing technology, the structure is simple and easy to assemble. It can prevent the air inlet 10 from flowing out of the centrifugal impeller 2 through the gap between the guide ring 122 and the guide ring 21, ensuring that all the air at the axial air inlet end enters the centrifugal impeller 2, solving the problem of pressure relief at the air inlet end of the centrifugal impeller 2, and improving the air inlet strength, suction, air outlet strength and wind speed.

[0053] Furthermore, such as Figure 2 , 4 As shown in Figures 5 and 6, the front housing 13 includes an integrally molded outer shell 131 and an inner cover 132;

[0054] The annular air outlet 20 is formed between the front end of the outer shell 131 and the opening of the inner cover 132, and the rear end of the outer shell 131 is connected to the main shell 12.

[0055] The outer surface of the bottom of the inner cover 132 is provided with an installation cavity 30 that protrudes toward the annular air outlet 20.

[0056] The inner chamber is located in the outer region of the centrifugal impeller 2, forming an air duct 40 with an inner diameter that gradually decreases towards the annular air outlet 20.

[0057] In this embodiment, by using an air duct 40 with an inner radial annular air outlet 20 that gradually decreases in size, a pressurization effect is achieved, making the airflow of the bladeless fan stronger and farther.

[0058] In this embodiment, the outer shell 131 and the inner cover 132 are integrally molded to ensure the dimensional quality of the annular air inlet 10, which can reduce the impact of installation procedures and installation errors, and improve the quality of the bladeless fan.

[0059] Furthermore, such as Figure 1 , 2 As shown in Figures 4 and 5, the rear housing 11 has a cover-like structure. The cover end of the rear housing 11 is detachably connected to the main housing 12, and the cover surface 111 of the rear housing 11 is inclined downwards.

[0060] In this embodiment, by tilting the cover 111 of the rear housing 11 downwards, the user is less likely to see the internal components and structure of the bladeless fan, making the bladeless fan more aesthetically pleasing and design-oriented.

[0061] Furthermore, such as Figure 4 , 5 As shown, the cover 111 of the rear housing 11 has a honeycomb mesh structure, and a detachable inner mesh plate 5 is provided inside the rear housing 11.

[0062] The inner mesh plate 5 is a honeycomb mesh plate, and the inner mesh plate 5 is set perpendicular to the drive shaft of the motor 3.

[0063] In this embodiment, since the cover 111 of the rear housing 11 is inclined and the inner mesh plate 5 is vertically arranged with a certain distance between them, when a thread / hair enters from the rear housing 11, it first deflects the direction of movement through the mesh of the cover 111 and then gets stuck on the mesh of the inner mesh plate 5; moreover, the double-layer stacking can block large particles and improve the ability to prevent debris.

[0064] In this embodiment, since the cover 111 of the rear housing 11 is inclined and the inner mesh plate 5 is vertically arranged with a certain distance between them, the resulting cross mesh can produce a double refraction effect, reduce the light transmittance, and make the internal impeller invisible to the naked eye at a distance of 50cm from the fan, making the bladeless fan more design-oriented and aesthetically pleasing.

[0065] In this embodiment, the double-layer honeycomb mesh structure formed inside the rear housing 11 can improve the overall structural strength, and since the inner mesh plate 5 is detachable, the mesh plate can be quickly and easily removed when cleaning is required.

[0066] Furthermore, as shown in Figures 4 and 5, the inner mesh plate 5 is detachably snapped into the outer shell 131.

[0067] In this embodiment, the outer shell 131 is provided with a snap-fit ​​structure 6 that engages with the inner mesh plate 5. The inner mesh plate 5 is deformed by external force to detach from the outer shell 131, making disassembly and assembly convenient and quick.

[0068] Furthermore, such as Figure 4 , 5 As shown, a connecting ring 112 is provided at the cover opening of the rear housing 11;

[0069] The main housing 12 is provided with an annular rib 123 on the outer surface of the air inlet 10;

[0070] The connecting ring 112 is sleeved on the outside of the annular rib 123;

[0071] The connecting ring 112 is magnetically and quickly connected to the air inlet 10 surface of the main housing 12.

[0072] In this embodiment, such as Figure 2 , 5 As shown, the connection ring 112 and the annular rib 123 enable quick positioning of the rear housing 11 during installation. Since the connection ring 112 and the main housing 12 are connected by magnetic quick-release, the ease of cleaning and maintenance of the mesh plate of the rear housing 11 is improved.

[0073] In this embodiment, a first magnetic element 7 is embedded on the surface of the connecting ring 112, and a second magnetic element 8 is provided on the main housing 12 to be magnetically connected to the first magnetic element 7;

[0074] The first magnetic element 7 and the second magnetic element 8 are magnetic rings or multiple circumferentially distributed magnetic blocks.

[0075] Furthermore, such as Figure 1 As shown, the base assembly 4 includes a rotating part 41, a telescopic rod 42, and a base plate 43 arranged sequentially from top to bottom.

[0076] In this embodiment, the rotating part 41 is used to adjust the blowing angle of the bladeless fan, the telescopic rod 42 is used to adjust the height position of the bladeless fan, and the base plate 43 serves to vertically support the bladeless fan.

[0077] Furthermore, such as Figure 4 , 5 As shown, in order to improve the non-contact sealing between the rear housing 11 and the guide ring 21, and to improve the air intake intensity and effect, a baffle ring 113 is provided on the outer side of the arc-shaped end of the guide ring 122; the arc-shaped end of the guide ring 21 is located between the arc-shaped end of the guide ring 122 and the baffle ring 113.

[0078] For those skilled in the art, various other corresponding changes and modifications can be made based on the technical solutions and concepts described above, and all such changes and modifications should fall within the protection scope of the claims of this utility model patent.

Claims

1. A novel bladeless fan, comprising a housing assembly, a centrifugal impeller, a motor, and a base assembly. The component is characterized by: The housing assembly includes a rear housing, a main housing, and a front housing; The main housing has an air inlet at one end and is detachably connected to the rear housing, while the other end is connected to the front housing. The front end of the front housing is provided with an annular air outlet, and an inner cavity is formed between the front housing and the main housing that communicates with the annular air outlet and the air inlet. The inner cavity is equipped with a motor that is fixedly connected to the front housing. The drive end of the motor faces the air inlet and is connected to the centrifugal impeller. The air inlet is provided with a funnel-shaped airflow guide ring; The large end of the flow guide ring is smoothly connected to the air inlet, and the small end extends into the flow guide ring of the centrifugal impeller, and is an arc-shaped end that bends radially outward. The inner diameter of the air inlet end of the guide ring is larger than the outer diameter of the small end of the guide ring, and the air inlet end is an arc-shaped end that is radially bent towards the back of the small end of the guide ring.

2. The novel bladeless fan according to claim 1, characterized in that, The front housing comprises an integrally molded outer shell and an inner cover; The annular air outlet is formed between the front end of the outer shell and the opening of the inner cover, and the rear end of the outer shell is connected to the main shell. The outer surface of the bottom of the inner cover is provided with an installation cavity that protrudes toward the annular air outlet. The inner chamber is located in the outer region of the centrifugal impeller, forming an air duct with an inner diameter that gradually decreases towards the annular air outlet.

3. A novel bladeless fan according to claim 1, characterized in that, The rear housing is a cover-shaped structure, and the cover end of the rear housing is detachably connected to the main housing. The cover surface of the rear housing is inclined downwards.

4. A novel bladeless fan according to claim 3, characterized in that, The cover of the rear housing is a honeycomb mesh structure, and a detachable inner mesh plate is provided inside the rear housing; The inner mesh plate is a honeycomb mesh plate, and the inner mesh plate is set perpendicular to the drive shaft of the motor.

5. A novel bladeless fan according to claim 4, characterized in that, The inner mesh plate is detachably snapped into the outer shell.

6. A novel bladeless fan according to claim 4, characterized in that, A connecting ring is provided at the opening of the rear housing; The main housing has an annular rib on the outer surface of the air inlet. The connecting ring is sleeved on the outside of the annular protrusion; The connecting ring is magnetically and quickly attached to the air inlet surface of the main housing.

7. A novel bladeless fan according to claim 1, characterized in that, The base assembly includes a rotating part, a telescopic rod, and a base plate arranged sequentially from top to bottom.

8. A novel bladeless fan according to claim 1, characterized in that, A retaining ring is provided on the outer side of the arc-shaped end of the drainage ring; The arc-shaped end of the guide ring is located between the arc-shaped end of the diversion ring and the retaining ring.

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