CN-224228900-U - Air circulation fan air duct structure and air circulation fan

Abstract

The utility model belongs to the technical field of circulating fans, and particularly relates to an air channel structure of an air circulating fan and the air circulating fan. The air circulation fan comprises an air duct structure, the air duct structure comprises an air suction cylinder shell, an air blowing cylinder shell, fan blades and a driving motor, the second end of the air suction cylinder shell is connected with the third end of the air blowing cylinder shell, a plurality of turbulence rib plates are arranged in the second end of the air suction cylinder shell, a plurality of flow guide rib plates are arranged in the third end of the air blowing cylinder shell, the flow guide rib plates and the turbulence rib plates are arranged in a crossing mode, the fan blades are arranged in the air suction cylinder shell, the fan blades are connected with the driving motor, and the driving motor drives the fan blades to rotate, so that air flow is sucked from the first end of the air suction cylinder shell and extruded by the fan blades, and is blown out from the fourth end of the air blowing cylinder shell after passing through the turbulence rib plates and the flow guide rib plates. The air flow sucked by the fan blade passes through the turbulence rib plate to play a role in turbulence on the compressed air flow, so that the problems of reducing the air flow velocity and causing large air flow noise caused by unbalanced air pressure or interaction of the compressed air flow due to inconsistent flow direction are avoided.

Inventors

• WANG AIBIN

Assignees

• 广东又一电器科技有限公司

Dates

Publication Date

20260512

Application Date

20250425

Claims (13)

1. 1. The air circulation fan air channel structure is characterized by comprising an air suction cylinder shell, an air blowing cylinder shell, fan blades and a driving motor, wherein the air suction cylinder shell comprises a first end and a second end, the air blowing cylinder shell comprises a third end and a fourth end, the second end of the air suction cylinder shell is connected with the third end of the air blowing cylinder shell, a plurality of turbulence rib plates are arranged in the second end of the air suction cylinder shell, a plurality of flow guide rib plates are arranged in the third end of the air blowing cylinder shell and are arranged in a crossing mode, the fan blades are arranged in the air suction cylinder shell and are connected with the driving motor, the driving motor drives the fan blades to rotate, so that air flow is sucked from the first end of the air suction cylinder shell and extruded by the fan blades, and is blown out from the fourth end of the air blowing cylinder shell after passing through the turbulence rib plates and the flow guide rib plates.
2. 2. The air circulation fan duct structure of claim 1, wherein a collar is further arranged in the first end of the air suction cylinder shell, one end of the turbulence rib plate is connected with the inner side wall of the air suction cylinder shell, the other end of the turbulence rib plate is connected with the outer side of the collar, and the driving motor is arranged in the collar.
3. 3. The air circulation fan duct structure of claim 2, wherein an installation cavity is further formed in the air blowing cylinder shell, one end of the lantern ring is sleeved on the opening of the installation cavity, a fixing frame is further arranged in the installation cavity, and the driving motor is connected with the fixing frame.
4. 4. The air circulation fan duct structure according to claim 3, wherein an inner cylinder shell is further arranged in the air blowing cylinder shell, one end of the flow guide rib plate is connected with the outer side wall of the inner cylinder shell, the other end of the flow guide rib plate is connected with the inner side wall of the air blowing cylinder shell, the mounting cavity is arranged in the inner cylinder shell, a cavity is formed in the inner cylinder shell and is used for mounting a control circuit, a wire penetrating groove is formed in one flow guide rib plate, a port of the wire penetrating groove penetrates through the cavity, and a power wire connected with the driving motor penetrates through the wire penetrating groove and is connected with the driving motor.
5. 5. The air circulation fan duct structure of claim 4, wherein the fan blades comprise a connecting sleeve, the connecting sleeve is connected with a main shaft of the driving motor, one end of the main body of the driving motor stretches into the connecting sleeve, a gap is arranged between the end of the connecting sleeve and the end of the lantern ring, the outer diameter of the connecting sleeve is smaller than the inner diameter of the lantern ring and larger than the inner diameter of the mounting cavity, and the lantern ring is a conical ring and extends obliquely to the connecting sleeve.
6. 6. An air circulation fan duct structure according to any one of claims 1 to 5, wherein one side of the spoiler rib has an outer curved surface structure and the other side has an inner curved surface structure, and the curvature of the cross section of the spoiler rib gradually decreases in a direction in which the spoiler rib extends outward.
7. 7. The air circulation fan duct structure of claim 5, wherein the fan blades comprise a plurality of evenly distributed blades, air flow compression openings are formed between adjacent blades, and the air flow compression openings are projected in the axial direction of the fan blades to form an arc structure and are arranged to cross the turbulence rib plates.
8. 8. The air circulation fan duct structure of claim 7, wherein the blades and the connecting sleeve of the fan blades are integrally injection molded, and the blades are distributed at equal angles along the outer side of the connecting sleeve.
9. 9. The air circulation fan duct structure of claim 7, wherein an inner ring is further arranged in the air blowing cylinder shell, the inner ring extends along the axial direction of the air blowing cylinder shell, the flow guide rib plate is arranged between the inner ring and the air blowing cylinder shell, a channeling partition plate extending from one side of the flow guide rib plate to the fourth end of the air blowing cylinder shell is further arranged on the inner side wall of the air blowing cylinder shell, and an air flow extrusion ring is formed between the channeling partition plate and the outer side wall of the inner ring.
10. 10. The air circulation fan duct structure of claim 9, wherein the inner side wall of the fourth end of the blower housing is provided with a tapered extrusion ring, the diameter of the tapered extrusion ring is smaller than the inner diameter of the blower housing, and the cross flow baffle extends to the mouth of the tapered extrusion ring.
11. 11. An air circulation fan duct structure according to any one of claims 1 to 5, wherein at least two lugs extend from the outer side of the second end of the suction cylinder housing, the lugs are provided with fastening holes, and a limit button is provided on the outer side of the blowing cylinder housing and is fastened with the fastening holes.
12. 12. An air circulation fan is characterized by comprising an air circulation fan air channel structure according to any one of claims 1-10, and further comprising a shell, a base, a front net and a rear net cover, wherein the air suction cylinder shell and the air blowing cylinder shell are integrally arranged in the shell, the shell is supported on the base, the front net cover is covered at the front end of the shell, the rear net cover comprises a connecting cylinder, an end cover is arranged at the end part of the connecting cylinder, the connecting cylinder is covered at the tail end of the shell, a buffer cavity is formed, a plurality of air grooves are formed in the side wall of the connecting cylinder, the air grooves extend to the end cover, and the fan blades are arranged closer to the buffer cavity.
13. 13. The air circulation fan of claim 12, wherein a cooling device is further disposed in the buffer chamber.

Description

Air circulation fan air duct structure and air circulation fan Technical Field The utility model belongs to the technical field of air circulation, and particularly relates to an air circulation fan air duct structure and an air circulation fan. Background The air circulation fan is mainly used for indoor air circulation, so that indoor air temperature distribution is uniform. An air circulation fan may be used as the fan. The main structure of the air circulation fan comprises a driving motor, a turbofan, a diversion grid and a cylinder shell. Unlike a common fan, the air circulation fan can make the wind spirally blow out along a certain direction, and the spiral columnar wind can be finally formed along with the stirring of the fan blades. The air circulation fan blows out wind far away, and has better directionality. For example, chinese patent application publication CN119146080a discloses a circulation fan with a fork arm supporting structure, including a fan main body and a base, a fork arm is provided on the base, the fan main body is hinged with the fork arm, the fan main body is provided in the fork arm, wherein the fan main body is provided with a motor casing and a fan blade motor, the fan blade motor is provided in the front part of the motor casing, the fan main body is provided with a vertical swing driving mechanism, the vertical swing driving mechanism includes a first motor, a first crank, a first connecting rod, a swing arm and a force transmission arm, one end of the first crank is mounted on an output rotating shaft of the first motor, the other end corresponding to the first crank is hinged with one end of the first connecting rod, the other end corresponding to the first connecting rod is hinged with one end of the swing arm, the other end corresponding to the force transmission arm is connected with one end of the fork arm in a positioning manner, the swing arm can swing around the hinge axis of the fan main body and the fork arm relative to the first connecting rod, the first motor is mounted in the rear part of the motor casing, and the first crank, the first connecting rod and the swing arm are provided in the motor casing. For example, chinese patent publication No. CN208794609U discloses an ion-purifying air circulation fan, which includes a main body, a fan assembly, a grid set, a non-equilibrium ion alternate generator and a driver, wherein the main body includes a casing, a bracket fixed on two sides of the casing, and a fixed grid positioned in the casing, the fan assembly is disposed on the fixed grid, the grid set includes a first grid connected to an air inlet of the casing and a second grid connected to an air outlet of the casing, the second grid is in a vortex shape, the non-equilibrium ion alternate generator is disposed at the air outlet of the casing, and the fan assembly and the non-equilibrium ion alternate generator are electrically connected to the driver disposed at the bottom of the casing. According to the technical scheme disclosed in the patent document, the fan blades are closer to the air outlet of the shell, and the fan blades are closer to the air outlet, so that the air channel of the air outlet is short, the compressed distance of the formed air flow is short, the air flow blowing-out distance is influenced by the air channel distance, and the air circulation effect is influenced by the short air flow blowing-out distance. Disclosure of utility model The utility model aims to provide an air circulation fan air duct structure and an air circulation fan, which are used for solving the problem that the air circulation effect is affected due to the short air flow distance of air blowing of the existing air circulation fan. The air circulation fan duct structure comprises an air suction cylinder shell, an air blowing cylinder shell, fan blades and a driving motor, wherein the air suction cylinder shell comprises a first end and a second end, the air blowing cylinder shell comprises a third end and a fourth end, the second end of the air suction cylinder shell is connected with the third end of the air blowing cylinder shell, a plurality of turbulence rib plates are arranged in the second end of the air suction cylinder shell, a plurality of flow guide rib plates are arranged in the third end of the air blowing cylinder shell and are arranged in a crossed mode, the fan blades are arranged in the air suction cylinder shell, the fan blades are connected with the driving motor, and the driving motor drives the fan blades to rotate, so that air flow is sucked from the first end of the air suction cylinder shell and extruded by the fan blades, and is blown out from the fourth end of the air blowing cylinder shell after passing through the turbulence rib plates and the flow guide rib plates. Further, a lantern ring is further arranged in the first end of the air suction cylinder shell, one end of the turbulence rib plate is connected with the inner side wall of t