CN109236703B

CN109236703B - But angle regulation's bladeless fan structure

Info

Publication number: CN109236703B
Application number: CN201811379670.3A
Authority: CN
Inventors: 李同强; 徐先力; 赵中伟; 余斌霄
Original assignee: Zhejiang Gongshang University
Current assignee: Zhejiang Gongshang University
Priority date: 2018-11-19
Filing date: 2018-11-19
Publication date: 2020-04-07
Anticipated expiration: 2038-11-19
Also published as: CN109236703A

Abstract

The invention relates to the technical field of fans, and aims to solve the problems of inconvenience and instability in angle adjustment of the conventional fan, and discloses a bladeless fan structure with an adjustable angle, which comprises a base and a shell, wherein the shell is integrally of a C-shaped structure, a connecting pipe is arranged between two ends of the shell, a C-shaped flow passage is arranged in the shell, two ends of the connecting pipe are correspondingly communicated with two ends of the C-shaped flow passage one by one, and an air injection gap communicated with the C-shaped flow passage is arranged on the inner wall of the shell; the outside of connecting pipe is equipped with the adapter sleeve, rotates between connecting pipe and the adapter sleeve to be connected, the rear side of adapter sleeve extends and forms connecting portion, is equipped with the water conservancy diversion chamber in the connecting portion, the side of connecting pipe be equipped with the long slot hole of water conservancy diversion chamber front end intercommunication, be connected through the base cover between the rear end of connecting portion and the upper end of base, the upper end of base cover and the rear end intercommunication in water conservancy diversion chamber, the lower extreme side of base cover is equipped with a plurality of inlet ports, be equipped with motor, impeller in the base. The invention has the advantages of adjustable air outlet angle, stable whole and uneasy turnover.

Description

But angle regulation's bladeless fan structure

Technical Field

The invention relates to the technical field of fans, in particular to a bladeless fan structure with an adjustable angle.

Background

Conventional fans typically include a motor and blades that are housed in a cage that allows air to pass through the cage and prevents foreign objects from contacting the blades, thereby providing a safety barrier. However, the air blown by the fan is discontinuous and uneven intermittently, and after the fan is blown for a long time, headache can be caused, and the fan has safety hazards, for example, children stretch fingers into the cage to contact the blades to cause damage due to curiosity, and external foreign matters can enter the cage to cause damage and the like. In order to improve the safety performance of the fan, the bladeless fan is more and more popular at present, the bladeless fan is also called an air back increasing machine, the bladeless fan can generate natural and continuous cool air, and the air is sucked into an engine seat, then airflow is increased by a plurality of times and is discharged through an annular gap, so that the airflow in an annular ring is driven to flow to form continuous and uniform air. However, the bladeless fan has some disadvantages, for example, the base and the annular ring of the bladeless fan are fixed, the blowing angle of the annular ring cannot be changed or adjusted, the base is located at the lower side of the annular ring, the overall height is large, the stability is poor, and the bladeless fan is easy to tip over after being touched.

For example, chinese patent application publication No. CN2103089718A, published as 2013, 5/8, discloses a bladeless fan comprising a nozzle and a generating means for generating an air flow through the nozzle, the nozzle comprising a housing, a cavity within the housing, and an exhaust port disposed on the housing, the bladeless fan further comprising a flag disposed in the cavity, and the housing being at least partially transparent. Obviously, the bladeless fan cannot adjust the angle of the nozzle, namely cannot adjust the angle of air flow, and the base is unstable and easy to overturn.

Disclosure of Invention

The invention aims to solve the problems of the bladeless fan in the prior art, and provides an angle-adjustable bladeless fan structure.

In order to achieve the purpose, the invention adopts the following technical scheme:

a bladeless fan structure with an adjustable angle comprises a base and a shell, wherein the shell is integrally of a C-shaped structure, a connecting pipe is arranged between two ends of the shell, a C-shaped flow passage is arranged in the shell, two ends of the connecting pipe are communicated with two ends of the C-shaped flow passage in a one-to-one correspondence mode, and an air injection gap communicated with the C-shaped flow passage is arranged on the inner wall of the shell; the outside of connecting pipe is equipped with the adapter sleeve, rotates between connecting pipe and the adapter sleeve to be connected, the rear side of adapter sleeve extends and forms connecting portion, be equipped with the water conservancy diversion chamber in the connecting portion, the side of connecting pipe is equipped with the slotted hole with water conservancy diversion chamber front end intercommunication, be connected through the base cover between the rear end of connecting portion and the upper end of base, the upper end of base cover and the rear end intercommunication in water conservancy diversion chamber, the lower extreme side of base cover is equipped with a plurality of inlet ports, be equipped with motor, impeller in the base cover. When the air-jet device is used, the air-jet angle of the air-jet gap can be changed by rotating the shell, so that the convenience of blowing is changed to meet different requirements; through the connection mode of the connecting sleeve, the connecting part and the base sleeve, the whole height of the bladeless fan is reduced, so that the whole center is reduced, the whole fan is more stable, and the fan is not easy to tip over.

Preferably, two lugs are arranged in the connecting sleeve, the top surfaces of the lugs are cambered surfaces, the outer wall of the connecting pipe is arranged between the two lugs and rotates around the cambered surfaces of the lugs, and limiting convex strips are arranged on two sides, located on the long slotted hole, of the outer wall of the connecting pipe. The limiting convex strip is used for limiting the maximum rotation angle of the connecting pipe.

Preferably, the top surface of the lug is provided with a sealing groove, and a sealing strip is arranged in the sealing groove. The sealing strip plays a sealing role and prevents air leakage.

Preferably, the outer wall of the connecting pipe is provided with limiting teeth on the opposite side of the long slotted hole, the bottom of the connecting sleeve is provided with a limiting pin, the head of the limiting pin is clamped between two adjacent limiting teeth, and the rear end of the limiting pin is provided with a pressure spring. The limiting pin is matched with the limiting teeth, and the shell can be automatically positioned after rotating to an angle.

Preferably, the casing comprises a front casing and a rear casing, an open end of the rear casing is buckled at the rear end of the front casing, the front casing and the rear casing enclose a C-shaped flow passage, and the air injection gap is formed between the lower side of the rear casing and the lower side of the rear end of the front casing.

Preferably, the rear end of the lower side of the front shell is uniformly provided with a plurality of flow guide notches for communicating the C-shaped flow passage with the air injection gap.

Preferably, the upper end of the base sleeve is provided with an air distribution seat, the air distribution seat is provided with a plurality of air distribution holes, the center of the bottom surface of the air distribution seat is fixedly provided with a motor seat, the motor is arranged in the motor seat, and the impeller is fixedly connected with the shaft end of the motor; and the upper end of the base sleeve is positioned outside the impeller and is provided with a flow guide cover. The air distribution seat has a shunting function, and reduces turbulence between high-pressure airflows (external air enters the base sleeve and is compressed under the action of the impeller) at the upper end of the base, so that the flowing noise of the air is reduced, and the kinetic energy loss of the airflow is reduced.

Preferably, a plurality of radiating fins are arranged on the outer side of the motor base. The motor can generate heat when rotating, the heat of the motor is transferred to the radiating fins, and the heat can be taken away quickly when the airflow in the air guide sleeve flows through the radiating fins.

Preferably, the lower end of the base sleeve is provided with a conical filter screen on the inner side of the air inlet hole, the bottom surface of the conical filter screen is fixedly connected with the base, and an annular slag storage groove is formed in the lower portion of the base, which is located below the conical filter screen. The inlet port can prevent that the large granule impurity among the outside air from getting into, and the toper filter screen can prevent that small granule impurity from getting into, and small granule impurity receives blockking of toper filter screen and falls to annular storage slag chute in, regularly with the base dismantle the clearance can, it is very convenient to clear up.

Preferably, the bottom of the base is provided with a rubber pad. The rubber pad can increase the contact stability of base and plane.

Therefore, the invention has the advantages of adjustable air outlet angle, overall stability and uneasy turnover.

Drawings

FIG. 1 is a schematic diagram of a structure of the present invention.

Fig. 2 is a cross-sectional view taken at a-a of fig. 1.

Fig. 3 is a partially enlarged view of a portion B in fig. 2.

Fig. 4 is a partially enlarged view of fig. 2 at D.

Fig. 5 is a schematic view of the internal structure of the base sleeve.

Fig. 6 is a schematic view of the housing rotated by an angle.

In the figure: the air-jet fan comprises a base 1, a shell 2, a front shell 200, a rear shell 201, a flow guide notch 202, a connecting pipe 3, a limiting convex strip 30, a limiting tooth 31, a C-shaped flow channel 4, an air jet gap 5, a connecting sleeve 6, a connecting part 60, a flow guide cavity 61, a lug 62, a sealing strip 63, a limiting pin 64, a pressure spring 65, a long slotted hole 7, a base sleeve 8, an air inlet 9, a motor 10, an impeller 11, an air distribution seat 12, an air distribution hole 13, a motor seat 14, a heat radiating fin 15, a flow guide cover 16, a conical filter screen 17, an annular slag storage groove 18, a rubber pad 19 and.

Detailed Description

The invention is further described with reference to the accompanying drawings and the detailed description below:

as shown in fig. 1, 2, 3 and 5, the bladeless fan structure with adjustable angle comprises a base 1 and a shell 2, wherein the shell is integrally in a C-shaped structure, a connecting pipe 3 is arranged between two ends of the shell, a C-shaped flow passage 4 is arranged in the shell, two ends of the connecting pipe are correspondingly communicated with two ends of the C-shaped flow passage one by one, and an air injection gap 5 communicated with the C-shaped flow passage is arranged on the inner wall of the shell; the outer side of the connecting pipe is provided with a connecting sleeve 6, the connecting pipe is rotatably connected with the connecting sleeve, as shown in fig. 4, the rear side of the connecting sleeve 6 extends to form a connecting part 60, a flow guide cavity 61 is arranged in the connecting part, the side surface of the connecting pipe is provided with a long slot hole 7 communicated with the front end of the flow guide cavity, the rear end of the connecting part is connected with the upper end of the base through a base sleeve 8, the upper end of the base sleeve is communicated with the rear end of the flow guide cavity, the side surface of the lower end of the base sleeve is provided with a plurality of air inlet.

As shown in fig. 3, the housing 2 includes a front housing 200 and a rear housing 201, wherein the open end of the rear housing is fastened to the rear end of the front housing, and a C-shaped flow channel 4 is defined between the front housing and the rear housing, and an air injection gap 5 is formed between the lower side of the rear housing and the lower side of the rear end of the front housing; the rear end of the lower side of the front shell is uniformly provided with a plurality of flow guide notches 202 used for communicating the C-shaped flow passage with the air injection gap.

As shown in fig. 4, two lugs 62 are arranged in the connecting sleeve 6, the top surfaces of the lugs are cambered surfaces, the outer wall of the connecting pipe is arranged between the two lugs and rotates around the cambered surfaces of the lugs, and the outer wall of the connecting pipe 3 positioned at two sides of the long slotted hole is provided with a limiting convex strip 30; the top surface of the lug is provided with a sealing groove, and a sealing strip 63 is arranged in the sealing groove; the opposite side of the outer wall of the connecting pipe 3 and the long slotted hole is provided with a limiting tooth 31, the bottom of the connecting sleeve 6 is provided with a limiting pin 64, the head of the limiting pin is clamped between two adjacent limiting teeth, and the rear end of the limiting pin is provided with a pressure spring 65.

As shown in fig. 5, an air distribution base 12 is arranged at the upper end of the base sleeve 8, a plurality of air distribution holes 13 are arranged on the air distribution base, a motor base 14 is fixed at the center of the bottom surface of the air distribution base, the motor 10 is arranged in the motor base, the shaft end of the motor faces downward, an impeller 11 is fixedly connected with the shaft end of the motor, a fan switch 20 is arranged on the top surface of the connecting part, the fan switch is electrically connected with the motor, the motor in the embodiment is a brushless motor, a plurality of radiating fins 15 are arranged on the outer side of the motor base, and a flow guide cover 16 is arranged at the upper; the lower end of the base sleeve is provided with a conical filter screen 17 at the inner side of the air inlet, the bottom surface of the conical filter screen is fixedly connected with the base, an annular slag storage groove 18 is arranged at the lower part of the conical filter screen on the base, and a rubber pad 19 is arranged at the bottom of the base.

The principle of the invention is as follows with reference to the attached drawings: as shown in fig. 1, 2 and 5, when the fan switch is turned on, the motor drives the impeller to rotate, external air enters the air guide sleeve from the air inlet, then enters the connecting pipe through the air distribution hole, the air guide cavity and the slotted hole in sequence, then enters the C-shaped flow channel from two ends of the connecting pipe, and finally is ejected from the air injection gap, and the air flow ejected from the air injection gap guides the surrounding air to pass through the shell and then be blown out from the front end of the shell, so that continuous and stable air is formed. The user can freely adjust the blowing angle, and the horizontal wind is blown out in fig. 2, and the housing is rotated by an angle as shown in fig. 6, so that the wind blows obliquely upward.

The above is only a specific embodiment of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions or modifications made based on the present invention to solve the same technical problems and achieve the same technical effects are within the scope of the present invention.

Claims

1. A bladeless fan structure with an adjustable angle comprises a base and a shell and is characterized in that the shell is integrally of a C-shaped structure, a connecting pipe is arranged between two ends of the shell, a C-shaped flow passage is arranged in the shell, two ends of the connecting pipe are communicated with two ends of the C-shaped flow passage in a one-to-one correspondence mode, and an air injection gap communicated with the C-shaped flow passage is arranged on the inner wall of the shell; the outside of connecting pipe is equipped with the adapter sleeve, rotates between connecting pipe and the adapter sleeve to be connected, the rear side of adapter sleeve extends and forms connecting portion, be equipped with the water conservancy diversion chamber in the connecting portion, the side of connecting pipe is equipped with the slotted hole with water conservancy diversion chamber front end intercommunication, be connected through the base cover between the rear end of connecting portion and the upper end of base, the upper end of base cover and the rear end intercommunication in water conservancy diversion chamber, the lower extreme side of base cover is equipped with a plurality of inlet ports, be equipped with motor, impeller in the base cover.

2. The bladeless fan structure of claim 1, wherein the connecting sleeve has two lugs, the top surface of the lug is an arc surface, the outer wall of the connecting pipe is disposed between the two lugs and rotates around the arc surface of the lug, and the outer wall of the connecting pipe is provided with a limiting protrusion on two sides of the slot hole.

3. The bladeless fan structure of claim 2, wherein the top surface of the lug is provided with a sealing groove, and a sealing strip is arranged in the sealing groove.

4. The bladeless fan structure of claim 2 or 3, wherein the connecting pipe has limiting teeth on the side opposite to the slot hole, the connecting sleeve has a limiting pin at the bottom, the head of the limiting pin is clamped between two adjacent limiting teeth, and the rear end of the limiting pin is provided with a pressure spring.

5. The bladeless fan structure of claim 1, wherein the housing comprises a front housing and a rear housing, an open end of the rear housing is fastened to a rear end of the front housing, the front housing and the rear housing define the C-shaped flow path therebetween, and the air injection gap is formed between an underside of the rear housing and an underside of a rear end of the front housing.

6. The bladeless fan structure of claim 5, wherein the front housing has a plurality of flow guiding notches uniformly formed at a rear end of a lower side thereof for communicating the C-shaped flow passage with the air injection gap.

7. The bladeless fan structure of claim 1, wherein an air distribution seat is arranged at the upper end of the base sleeve, a plurality of air distribution holes are formed in the air distribution seat, a motor seat is fixed to the center of the bottom surface of the air distribution seat, the motor is arranged in the motor seat, and the impeller is fixedly connected with the shaft end of the motor; and the upper end of the base sleeve is positioned outside the impeller and is provided with a flow guide cover.

8. The bladeless fan structure of claim 7, wherein a plurality of heat dissipating fins are disposed on an outer side of the motor base.

9. The bladeless fan structure of claim 1 or 5, wherein a conical filter screen is arranged at the lower end of the base sleeve and located at the inner side of the air inlet hole, the bottom surface of the conical filter screen is fixedly connected with a base, and an annular slag storage groove is formed in the base and located below the conical filter screen.

10. The bladeless fan structure of claim 1, wherein a rubber pad is disposed on a bottom of the base.