WO2019200910A1

WO2019200910A1 - Bladeless fan having improved air duct structure

Info

Publication number: WO2019200910A1
Application number: PCT/CN2018/116416
Authority: WO
Inventors: 宋振明
Original assignee: 宋振明
Priority date: 2018-04-20
Filing date: 2018-11-20
Publication date: 2019-10-24
Also published as: CN208252434U

Abstract

A bladeless fan having an improved air duct structure, comprising a housing (1), a turbine chamber (2) being provided at the lower portion of the housing (1), an air inlet (21) in communication with the turbine chamber (2) being provided at the lower portion of the housing (1), a turbine blower (3) being mounted in the turbine chamber (2), a spiral air duct (4) being formed between the outer circumference of the turbine blower (3) and the side wall of the turbine chamber (2); and an annular air duct (5) being provided at the upper portion of the housing, annular air outlets (6) facing forward being provided along an inner circumference of the annular air duct (5), and an air outlet of the spiral air duct (4) being smoothly connected to the lower portion of an inner cavity of the annular air duct (5). The bladeless fan increases the air outlet volume of the fan, and reduces the noise produced by the operation of the fan.

Description

Leafless fan with improved air duct structure

Technical field

The utility model relates to the technical field of fans, in particular to a bladeless fan with improved air passage structure.

Background technique

The leafless fan is a new type of fan structure, which is free from the traditional fan blade structure, is safer and dustproof in use, and has no wind blades to reduce wind resistance and reduce energy consumption, so it is favored by consumers. The bladeless fan generally includes a straight air duct and an annular air duct. When working, air enters from the air inlet, is pressurized by the impeller of the turbine, enters the straight air duct, and then enters the annular air duct through the straight air duct, and then passes through the ring. The air outlet on the inner ring of the air duct is blown out. Due to the limitation of the structural space, the space of the straight air duct is relatively narrow, the wind pressure is relatively large, but the air volume is relatively small, resulting in a small air volume at the air outlet, and the running noise. bigger.

Utility model content

In view of the defects in the prior art, the present invention provides a bladeless fan with improved air passage structure to increase the air volume of the fan and reduce the noise of the fan operation.

The utility model provides a bladeless fan with improved air passage structure, comprising a casing, a lower part of the casing is provided with a turbine cavity, and a lower part of the casing is provided with an air inlet communicating with the turbine cavity, the turbine a turbine fan is installed in the cavity, a spiral air passage is formed between the outer circumference of the turbine fan and the side wall of the turbine cavity; an upper portion of the casing is provided with an annular air passage, and an inner ring is disposed along the inner ring of the annular air passage. An annular air outlet facing forward, the air outlet of the spiral air duct is smoothly connected with the lower portion of the inner cavity of the annular air passage.

The utility model innovatively applies the turbo fan to the bladeless fan, and the wind generated by the turbine fan passes through the spiral air passage and the annular air passage in turn, and then blows out through the annular air outlet of the inner ring of the annular air passage, and the wind volume generated by the turbine fan is large, and the spiral The area of the exit of the air duct is relatively large. Compared with the traditional vaneless fan, the air volume of the vaneless fan is larger, and the wind pressure in the spiral duct is not too high, and the spiral duct is smoothly connected with the annular duct. The movement of the airflow is smoother, and the bladeless fan operates less quietly than the conventional bladeless fan.

Further, the area of the annular air outlet is less than one third of the area of the air outlet of the spiral air duct and greater than one quarter of the area of the air outlet of the spiral air duct. The annular air outlet is between one third and one quarter of the area of the air outlet of the spiral air duct, and the wind speed of the air outlet of the annular air outlet can be ensured when the wind pressure in the spiral air duct is low.

Further, a plurality of baffles are distributed along the annular air outlet, and each of the baffles is connected between the inner ring and the outer ring of the annular air outlet. The traditional bladeless fan is forcibly extruded by the pressure of the wind, and the utility model guides the wind through the deflector, the air volume is larger, the noise is smaller, and the distance of the air supply is farther.

Further, the ratio of the depth to the lateral width of the baffle is greater than 3. When the ratio of the depth to the lateral width of the baffle is greater than 3, the effect of the diversion is best.

Further, an upper portion of the annular duct is provided with a partition that blocks the inner cavity of the annular duct. The inner cavity of the annular duct is divided into two parts through the partition, and the air distribution of the two parts is more uniform, ensuring uniform air outlet of the annular air outlet.

Further, the housing is mounted on a fan base, and a synchronous motor for driving the swing head of the housing is mounted in the fan base.

Further, an outer circumference of the outer ring of the annular air outlet is mounted with an annular light strip, the front side of the annular light strip is covered with an annular diffusing plate, and the front side of the diffusing light plate is covered with a light cover. By setting the ring light strip, it is more cool under the illumination of the ring light strip during use, and with the above scheme, the installation at the annular air outlet is reasonable and the structure is compact.

The utility model has the beneficial effects that the utility model innovatively applies the turbine fan to the bladeless fan, and the wind generated by the turbine fan passes through the spiral air passage and the annular air passage in turn, and then blows out through the annular air outlet of the inner ring of the annular air passage, the turbine The air volume generated by the fan is large, and the area of the outlet of the spiral air duct is relatively large. Compared with the conventional bladeless fan, the air volume of the bladeless fan is larger, and the wind pressure in the spiral air duct is not too high, and the spiral is added. The air duct is connected smoothly with the annular air duct, and the air movement is smoother. Compared with the conventional bladeless fan, the leafless fan operates with lower noise.

DRAWINGS

In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the specific embodiments or the description of the prior art will be briefly described below. In all the figures, like elements or parts are generally identified by like reference numerals. In the figures, elements or parts are not necessarily drawn to scale.

Figure 1 is a front elevational view of an embodiment of the present invention;

Figure 2 is a side view of an embodiment of the present invention;

Figure 3 is a schematic view of the internal structure of the embodiment of the present invention;

4 is a schematic view showing the installation of a lamp strip according to an embodiment of the present invention.

In the drawings, 1 denotes a casing; 2 denotes a turbine chamber; 21 denotes an air inlet; 3 denotes a turbine fan; 4 denotes a spiral duct; 5 denotes an annular duct; 6 denotes an annular air outlet; 61 denotes a deflector; Fan base; 8 denotes a synchronous motor; 91 denotes a ring light strip; 92 denotes a diffuser; 93 denotes a lamp cover.

detailed description

The embodiments of the technical solutions of the present embodiment will be described in detail below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present embodiment, and thus are only examples, and the scope of protection of the embodiments is not limited thereto.

As shown in FIG. 1 to FIG. 4, the embodiment of the present invention provides a bladeless fan with an improved air passage structure, including a housing 1 mounted on a fan base 7, and a fan base 7 is mounted for driving. The synchronous motor 8 of the housing 1 is oscillating.

A lower portion of the casing 1 is provided with a turbine chamber 2, and a lower portion of the casing 1 is provided with an air inlet 21 communicating with the turbine chamber 2, and a turbine fan 3 is installed in the turbine chamber 2, and blades of the turbine fan 3 are distributed in a cylindrical structure. The outer circumference, the cylindrical structure is rotated by the motor, and the outer circumference of the turbine fan 3 and the side wall of the turbine chamber 2 form a spiral duct 4, the spiral duct 4 is in the shape of an Archimedes spiral; the upper portion of the casing 1 is provided with a ring shape. The air duct 5 is provided with an outwardly facing annular air outlet 6 along the inner ring of the annular duct 5, and the air outlet of the spiral duct 4 is smoothly connected with the lower portion of the inner chamber of the annular duct 5.

In this embodiment, the turbine fan 3 is innovatively applied to the bladeless fan, and the wind generated by the turbine fan 3 passes through the spiral duct 4 and the annular duct 5 in turn, and then blows out through the annular air outlet 6 of the inner ring of the annular duct 5, and the turbine fan 3 The generated air volume is large, and the area of the outlet of the spiral air duct 4 is relatively large. Compared with the conventional bladeless fan, the air volume of the bladeless fan is larger, and the wind pressure in the spiral air duct 4 is not too high. In addition, the spiral air duct 4 is smoothly connected with the annular air duct 5, and the airflow movement is smoother. Compared with the conventional bladeless fan, the bladeless fan operates with lower noise.

The area of the annular air outlet 6 of the present embodiment is smaller than one third of the area of the air outlet of the spiral air duct 4 and larger than one quarter of the area of the air outlet of the spiral air duct 4, so that it can be inside the spiral air duct 4. In the case where the wind pressure is low, the wind speed of the outlet air outlet 6 is ensured.

In the present embodiment, a plurality of baffles 61 are spaced apart along the annular air outlet 6, and each baffle 61 is connected between the inner ring and the outer ring of the annular air outlet 6. The conventional bladeless fan is forcibly extruded by the pressure of the wind, and in this embodiment, the wind is guided by the deflector 61, the air volume is larger, the noise is smaller, and the distance of the air supply is further. Specifically, the ratio of the depth to the lateral width of the baffle 61 is greater than three, and the ratio of the depth of the baffle 61 to the lateral width is greater than three, and the effect of the diversion is best. The upper part of the annular duct 5 is provided with a partition that partitions the inner cavity of the annular duct 5, and the inner cavity of the annular duct 5 is divided into two parts by the partition at the upper portion, and the air distribution of the two parts is more evenly distributed to ensure the annular air outlet. The air output of 6 is even.

In addition, an annular light strip 91 is mounted on the outer circumference of the outer ring of the annular air outlet 6, and the front side of the annular light strip 91 is covered with an annular diffusing plate 92. The front side of the diffusing plate 92 is covered with a light cover 93, and a circular light strip 91 is provided. In use, it is more cool under the illumination of the ring light strip 91, and with the above scheme, the installation at the annular air outlet 6 is reasonable and compact.

Finally, it should be noted that the above embodiments are only used to explain the technical solutions of the embodiments, and are not limited thereto; although the embodiments are described in detail with reference to the foregoing embodiments, those skilled in the art should understand The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or replacements do not deviate from the essence of the corresponding embodiments. The scope of the technical solutions is intended to be included within the scope of the claims and the description of the embodiments.

Claims

A bladeless fan for improving an air passage structure, comprising: a housing, a lower portion of the housing is provided with a turbine chamber, and a lower portion of the housing is provided with an air inlet communicating with the turbine chamber, the turbine chamber a turbine fan is installed therein, and a spiral air passage is formed between an outer circumference of the turbine fan and a side wall of the turbine chamber; an upper portion of the casing is provided with an annular air passage, and an orientation is provided along an inner ring of the annular air passage An annular air outlet at the front, the air outlet of the spiral air duct is smoothly connected with the lower portion of the inner cavity of the annular air duct.
The bladeless fan of the improved air passage structure according to claim 1, wherein the area of the annular air outlet is less than one third of an area of the air outlet of the spiral air passage and larger than the air outlet of the spiral air passage. A quarter of the area.
The bladeless fan of the improved air duct structure according to claim 1, wherein a plurality of baffles are distributed along the annular air outlet, and each of the baffles is connected to the inner ring and the outer ring of the annular air outlet. Between the rings.
The bladeless fan of the improved air duct structure according to claim 3, wherein the ratio of the depth to the lateral width of the baffle is greater than three.
The bladeless fan of the improved air duct structure according to claim 1, wherein an upper portion of the annular duct is provided with a partition that partitions an inner cavity of the annular duct.
The bladeless fan of the improved air duct structure according to claim 1, wherein the casing is mounted on a fan base, and a synchronous motor for driving the swing head of the casing is mounted in the fan base.
The bladeless fan of the improved air duct structure according to claim 1, wherein an outer circumference of the outer ring of the annular air outlet is provided with a ring light strip, and a front side of the ring light strip is covered with an annular diffusing plate. The front side of the diffusing plate is covered with a lamp cover.