Combined bladeless fan

Abstract

The application discloses a combined bladeless fan, which comprises sub-fan bodies, the sub-fan body comprises a fan wheel and an air duct, the air duct comprises an air shell and a sealing sheet, the air shell comprises a top plate and a surrounding plate, the surrounding plate is fixed at one side edge of the top plate, an outer wall of the surrounding plate is provided with a plurality of air guide openings, sockets and air inlet openings, the sealing sheet is installed at the other side of the surrounding plate and cooperatively surrounds the air shell to form an air cavity, a gap for air outlet is left at the connecting position of the sealing sheet and the surrounding plate, the fan wheel is installed at the air guide opening, the air ducts of the plurality of sub-fan bodies can be spliced with each other, and the fan wheel is inserted into the air cavity of the adjacent sub-fan body along the socket, the fan wheel makes air flow into the air inlet opening of the inserted sub-fan body and then flow out from the gap for air outlet of the sub-fan body, the noise is low, the fan blade cannot be seen at the air outlet side, a plurality of shapes can be freely spliced according to requirements, and the start and stop functions of the sub-fan bodies are independent of each other.

Description

[Technical Field]

[0001] This invention relates to the technical field of bladeless fans, and in particular to the technical field of combined bladeless fans. [Background Technology]

[0002] Bladeless fans, also known as air multipliers, continuously produce cool air. With no exposed blades, they are less likely to injure children's fingers. Their simple and aesthetically pleasing design has made them increasingly popular. The principle behind bladeless fans is that, under specific conditions, a motor draws air into the base, then propels it out at high speed through a centrifugal or turbocharged air duct. The air circulates within the inner lip of the air ring, using this circulating force to draw air from the fan head into the air ring and blow it out at high speed. In other words, relatively small air disturbances can create a relatively large amount of air convection.

[0003] However, bladeless fans using this working principle, such as the bladeless fan with adjustable airflow (publication number CN215861025U), typically exhibit noticeable friction noise due to the longer air travel distance and the need for airflow circulation before exiting the fan, which can negatively impact the user experience. Furthermore, traditional bladeless fans produce relatively small air volumes, have limited air coverage, and generate a harsher breeze, making them insufficient to effectively replace traditional bladed fans and requiring further solutions. Moreover, existing bladeless fans are usually fixed in shape, preventing the creation of various configurations to meet specific needs. This necessitates the creation of a mold for each bladeless fan shape produced, consuming valuable factory inventory space and increasing production costs. Additionally, existing bladeless fans cannot achieve partial airflow while partially de-airing. [Summary of the Invention]

[0004] The purpose of this invention is to solve the problems in the prior art and propose a modular bladeless fan that is low in noise, can be freely assembled into various shapes as needed, and the opening and closing functions of each sub-fan are independent of each other, enabling the bladeless fan to achieve the function of partially airflow and partially no airflow.

[0005] To achieve the above objectives, this invention proposes a combined bladeless fan, comprising sub-fan bodies, each sub-fan body including a fan wheel and an air duct, the air duct including a fan housing and a sealing plate, the fan housing including a top plate and a surrounding plate, the surrounding plate being fixed to one side edge of the top plate, the outer wall of the surrounding plate having several air guide ports, insertion ports and air inlets, the sealing plate being installed on the other side of the surrounding plate and together with the fan housing forming an air cavity, the connection between the sealing plate and the surrounding plate having an air outlet gap, the fan wheel being installed at the air guide ports, the air ducts of several sub-fan bodies being able to be combined with each other so that the fan wheel is inserted into the air cavity of an adjacent sub-fan body along the insertion port, the fan wheel causing air to flow in from the air inlet of the inserted sub-fan body and then blow out from the air outlet gap of the sub-fan body.

[0006] Preferably, the wind turbine includes a shell, a support cylinder, support plates, fan blades, and a motor. The support cylinder is coaxially arranged in the shell through several support plates, and the motor is mounted on the support cylinder and can drive each fan blade to rotate.

[0007] Preferably, the shell includes a first straight cylindrical section, a horn-shaped section, a cylindrical connector, and a shell connector. The large end and small end of the horn-shaped section are respectively connected to the first straight cylindrical section and the cylindrical connector. The shell connector is fixed at the air duct. The cylindrical connector and the shell connector are detachably connected.

[0008] Preferably, the shell further includes a second straight section, which is installed at the other end of the first straight section. The first straight section can pass through the air guide, while the second straight section cannot pass through the air guide.

[0009] Preferably, the support cylinder is elastic and has several notches and several blades at one end near the air duct. The motor can be inserted into and fixed in the cylinder channel along the end of the support cylinder with several blades.

[0010] Preferably, the sealing sheet has a raised portion protruding towards the top plate, and the distance between the raised portion and the top plate gradually narrows from the air guide port to the air outlet gap.

[0011] Preferably, the air duct further includes an inner air ring, an inner support plate, an outer air ring, and an outer support plate. The inner air ring is coaxially arranged in the concave cavity of the protrusion through several inner support plates, and the outer air ring is coaxially arranged outside the enclosure plate through several outer support plates.

[0012] Preferably, the free end of the enclosure, the free end of the sealing plate, one end of the inner air ring, and one end of the outer air ring are located on the same plane.

[0013] Preferably, the shape of the air duct is semi-circular, semi-elliptical, triangular, rectangular, or polygonal.

[0014] The beneficial effects of this invention are:

[0015] 1) The fan body is formed by setting up a fan wheel and a duct together, and the duct is formed by setting up a fan shell and a sealing plate together. The sealing plate is used to semi-close the opening of the fan shell and leave an air outlet gap. At the same time, several air guides, inlets and air inlets are set outside the fan shell. The fan wheel can send air into the air cavity of the duct and let the air out along the air outlet gap. The whole structure is without a wind ring, so there is no need for air to flow around the inner lip of the wind ring. This effectively avoids the noise caused by the friction between air and the fan, thus greatly improving the user experience. At the same time, the fan blades are still not visible on the air outlet side, maintaining a smooth and beautiful shape. The ducts of several fan bodies can be freely combined to form various shapes as needed, thereby reducing unnecessary mold opening, avoiding space waste and increased production costs. Furthermore, the opening and closing functions of each fan body are independent of each other, which allows the bladeless fan to achieve the function of partial air outlet and partial air outlet.

[0016] 2) By setting a protruding part on the sealing sheet that protrudes towards the top plate, the distance between the protruding part and the top plate gradually narrows from the air guide to the air outlet gap, which can gradually accelerate the air as it passes through the air cavity, thereby ensuring the air outlet strength.

[0017] 3) By adding an inner air ring and an outer air ring at the air outlet, the air can be made to vibrate the inner air ring and the outer air ring simultaneously when it flows out at high speed, thereby doubling the airflow and spreading the air outlet range, thus avoiding the problem of harsh wind caused by the airflow blowing strongly in a small area in the same direction.

[0018] 4) By setting the first straight section, the horn section, the cylinder joint and the shell joint together to form the shell, on the one hand, the contraction of the horn section can accelerate the speed of air entering the air cavity, and on the other hand, the detachable setting between the cylinder joint and the shell joint greatly improves the convenience of splicing.

[0019] 5) By adding a second straight section with a larger outer diameter at the other end of the first straight section, since the second straight section cannot pass through the air guide, it can effectively prevent the various assembled sub-fans from completely separating due to external factors such as vibration during use, thereby improving the safety of use.

[0020] 6) By setting several notches at one end of the flexible support cylinder near the air duct to form several blades, it is easy to quickly disassemble and assemble the motor.

[0021] The features and advantages of the present invention will be described in detail through embodiments and in conjunction with the accompanying drawings. [Attached Image Description]

[0022] Figure 1 This is a three-dimensional structural diagram of the sub-fan body of Embodiment 1 from one perspective;

[0023] Figure 2This is a three-dimensional structural diagram of the sub-sector of Embodiment 1 from another perspective;

[0024] Figure 3 This is a top view of the sub-sector of Embodiment 1;

[0025] Figure 4 This is a bottom view of the sub-sector of Embodiment 1;

[0026] Figure 5 This is a three-dimensional structural diagram of the shell after removing the shell joint in Embodiment 1;

[0027] Figure 6 This is a three-dimensional structural diagram of the wind turbine in Embodiment 1 after removing the horn section, the cylinder joint, the shell joint, and the second straight cylinder section.

[0028] Figure 7 This is a three-dimensional structural diagram of the air duct and housing joint after assembly in Embodiment 1;

[0029] Figure 8 This is a three-dimensional structural diagram of the wind casing, sealing plate, and casing joint after assembly in Embodiment 1;

[0030] Figure 9 This is a three-dimensional structural diagram of the wind casing and casing joint after assembly in Embodiment 1;

[0031] Figure 10 This is a schematic diagram of the assembly of the sub-sectors in Embodiment 1;

[0032] Figure 11 yes Figure 10 Sectional view along line AA after removing the wind turbine;

[0033] Figure 12 This is a three-dimensional structural diagram of the sub-sector of Embodiment 2.

[0034] In the diagram: 1-Wind wheel, 11-Shell, 111-First straight section, 112-Flute section, 113-Cylinder joint, 114-Shell joint, 115-Second straight section, 12-Support cylinder, 121-Notch, 122-Wing, 13-Support plate, 14-Fan blade, 15-Motor, 2-Air duct, 21-Wind casing, 211-Top plate, 212-Enclosure plate, 2121-Air guide, 2122-Insert, 2123-Air inlet, 22-Sealing plate, 221-Protrusion, 23-Inner air ring, 24-Inner support plate, 25-Outer air ring, 26-Outer support plate.

Detailed Implementation Methods

[0035] Example 1:

[0036] See Figures 1 to 11The present invention relates to a combined bladeless fan, comprising a sub-fan body, wherein the sub-fan body includes a fan wheel 1 and an air duct 2, the air duct 2 includes a fan housing 21 and a sealing plate 22, the fan housing 21 includes a top plate 211 and a surrounding plate 212, the surrounding plate 212 is fixed to one side edge of the top plate 211, and the outer wall of the surrounding plate 212 is provided with a plurality of air guide ports 2121, insertion ports 2122 and air inlets 2123, the sealing plate 22 is installed on the other side of the surrounding plate 212 and together with the fan housing 21 to form an air cavity, and an air outlet gap is left at the connection between the sealing plate 22 and the surrounding plate 212, the fan wheel 1 is installed at the air guide port 2121, and the air ducts 2 of the plurality of sub-fan bodies can be combined with each other so that the fan wheel 1 is inserted into the air cavity of the adjacent sub-fan body along the insertion port 2122, the fan wheel 1 causes air to flow in from the air inlet 2123 of the inserted sub-fan body and then blow out from the air outlet gap of the sub-fan body.

[0037] The wind turbine 1 includes a shell 11, a support cylinder 12, a support plate 13, fan blades 14 and a motor 15. The support cylinder 12 is coaxially arranged in the shell 11 through several support plates 13. The motor 15 is mounted on the support cylinder 12 and can drive each fan blade 14 to rotate.

[0038] The shell 11 includes a first straight cylindrical section 111, a horn-shaped section 112, a cylindrical connector 113, and a shell connector 114. The large end and the small end of the horn-shaped section 112 are respectively connected to the first straight cylindrical section 111 and the cylindrical connector 113. The shell connector 114 is fixed at the air guide port 2121. The cylindrical connector 113 and the shell connector 114 are detachably connected.

[0039] The shell 11 also includes a second straight section 115, which is installed at the other end of the first straight section 111. The first straight section 111 can pass through the air guide 2121, while the second straight section 115 cannot pass through the air guide 2121.

[0040] The support cylinder 12 is elastic and has several notches 121 and several blades 122 at one end near the air duct 2. The motor 15 can be inserted into and fixed in the cylinder channel along the end of the support cylinder 12 with several blades 122.

[0041] The air casing 21 includes a top plate 211 and a surrounding plate 212. The surrounding plate 212 is fixed to one side edge of the top plate 211. Each of the air guides 2121, the inlets 2122 and the air inlets 2123 are located on the surrounding plate 212. The sealing plate 22 is connected to the surrounding plate 212.

[0042] The sealing sheet 22 is provided with a raised portion 221 protruding towards the top plate 211, and the distance between the raised portion 221 and the top plate 211 gradually narrows from the air guide 2121 to the air outlet gap.

[0043] The air duct 2 also includes an inner air ring 23, an inner support plate 24, an outer air ring 25, and an outer support plate 26. The inner air ring 23 is coaxially arranged in the cavity of the protrusion 221 through several inner support plates 24, and the outer air ring 25 is coaxially arranged outside the enclosure plate 212 through several outer support plates 26.

[0044] The free ends of the enclosure 212, the free ends of the sealing plate 22, one end of the inner air ring 23, and one end of the outer air ring 25 are located on the same plane.

[0045] The air duct 2 is semi-circular in shape.

[0046] Working process of this invention:

[0047] Taking a scenario where there are two sub-fans, with one sub-fan (hereinafter referred to as sub-fan 1) not supplying air while the other sub-fan (hereinafter referred to as sub-fan 2) supplies air, during operation, the motor 15 of sub-fan 2 drives its blades 14 to rotate. This causes outside air to first enter the air chamber of sub-fan 1 through the air inlet 2123, and then pass through the shell 11 of sub-fan 2 before entering the air chamber of sub-fan 2. At this time, because the distance between the protrusion 221 and the top plate 211 gradually narrows from the air guide 2121 to the air outlet gap, the airflow speed gradually increases as it flows from the air guide 2121 to the air outlet gap. When the high-speed airflow exits from the air outlet gap, it also drives the inner air ring 23 and the outer air ring 25 to move synchronously, thereby doubling the airflow, expanding the air outlet range, and making the wind force relatively softer and more natural.

[0048] In addition, the shapes of the air duct 2 of the No. 1 and No. 2 sub-fans can be different. For example, the shape of the air duct 2 of the No. 1 sub-fan is semi-circular while the shape of the air duct 2 of the No. 2 sub-fan is triangular, thus splicing together a teardrop-shaped bladeless fan.

[0049] Example 1:

[0050] See Figure 12 The air duct 2 is triangular in shape.

[0051] Everything else is the same as in Example 1.

[0052] The above embodiments are illustrative of the present invention and are not intended to limit the present invention. Any simple modifications to the present invention are within the scope of protection of the present invention.

Claims

1. A combined bladeless fan, characterized in that: The device includes a sub-fan body, which includes a fan wheel (1) and an air duct (2). The air duct (2) includes a fan housing (21) and a sealing plate (22). The fan housing (21) includes a top plate (211) and a surrounding plate (212). The surrounding plate (212) is fixed to one side edge of the top plate (211). The outer wall of the surrounding plate (212) is provided with several air guides (2121), inlets (2122), and air inlets (2123). The sealing plate (22) is installed on the surrounding plate (2121). 2) On the other side, together with the wind shell (21), a wind cavity is formed. The connection between the sealing plate (22) and the surrounding plate (212) has an air outlet gap. The wind wheel (1) is installed at the air guide port (2121). The air ducts (2) of several sub-fans can be combined with each other so that the wind wheel (1) is inserted into the wind cavity of the adjacent sub-fan along the insertion port (2122). The wind wheel (1) makes air flow in from the air inlet (2123) of the inserted sub-fan and then blow it out from the air outlet gap of the sub-fan. The sealing sheet (22) is provided with a raised part (221) protruding towards the top plate (211), and the distance between the raised part (221) and the top plate (211) gradually narrows from the air guide (2121) to the air outlet gap; The air duct (2) also includes an inner air ring (23), an inner support plate (24), an outer air ring (25) and an outer support plate (26). The inner air ring (23) is coaxially arranged in the cavity of the protrusion (221) through several inner support plates (24), and the outer air ring (25) is coaxially arranged outside the enclosure plate (212) through several outer support plates (26). The shape of the air duct (2) is semi-circular, semi-elliptical or polygonal.

2. The combined bladeless fan as described in claim 1, characterized in that: The wind turbine (1) includes a shell (11), a support cylinder (12), a support plate (13), fan blades (14) and a motor (15). The support cylinder (12) is coaxially arranged in the shell (11) through several support plates (13). The motor (15) is installed on the support cylinder (12) and can drive each fan blade (14) to rotate.

3. The combined bladeless fan as described in claim 2, characterized in that: The shell (11) includes a first straight cylindrical part (111), a horn-shaped part (112), a cylindrical connector (113), and a shell connector (114). The large end and the small end of the horn-shaped part (112) are connected to the first straight cylindrical part (111) and the cylindrical connector (113) respectively. The shell connector (114) is fixed at the air guide (2121). The cylindrical connector (113) and the shell connector (114) are detachably connected.

4. The combined bladeless fan as described in claim 3, characterized in that: The shell (11) also includes a second straight section (115), which is installed at the other end of the first straight section (111). The first straight section (111) can pass through the air guide (2121), while the second straight section (115) cannot pass through the air guide (2121).

5. The combined bladeless fan as described in claim 2, characterized in that: The support cylinder (12) is elastic and has several notches (121) and several blades (122) at one end near the air duct (2). The motor (15) can be inserted into and fixed in the cylinder channel along the end of the support cylinder (12) with several blades (122).

6. The combined bladeless fan as described in claim 1, characterized in that: The free end of the enclosure (212), the free end of the sealing plate (22), one end of the inner air ring (23), and one end of the outer air ring (25) are located on the same plane.

Images