CN202451475U

CN202451475U - Pneumatic blade-free fan

Info

Publication number: CN202451475U
Application number: CN2012200185220U
Authority: CN
Inventors: 冯卫
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-01-17
Filing date: 2012-01-17
Publication date: 2012-09-26
Anticipated expiration: 2022-01-17

Abstract

The utility model relates to a pneumatic blade-free fan, which comprises a wind pipe and a nozzle which is connected with external compressed gas, wherein one end of the wind pipe is provided with an air inlet, the other end of the wind pipe is provided with an air outlet with an outward flared structure, the nozzle is arranged in the middle part of two ends of the wind pipe and is communicated with the inner cavity of the wind pipe, and the nozzle is not parallel to the air inlet. The circular nozzle is used for sending compressed gas into the wind pipe so as to drive the air in the air inlet of the wind pipe to flow towards the air outlet at a high speed so as to realize the blade-free air supply of the fan, a more-than-one-grade air amplification device is also adopted to further drive a great amount of air to flow so as to increase the air output of the fan. The fan is simple and compact in structure, has no movable and rotary part, is free from maintenance and has the advantages of low noise, low production and application cost and long service life.

Description

Pneumatic no fan blade blower fan

Technical field

The utility model relates to a kind of pneumatic blower fan, be specifically a kind of be the blower fan of rotating moving parts such as power, no pneumatic motor, fan blade with the pressurized gas.

Background technique

Pneumatic blower fan is to be power with the pressurized gas, utilizes pressurized gas to send into to form pressure difference in the pneumatic motor air cavity to promote the rotor rotation, and drives the fan blade rotation by rotor, and fan blade cutting air forms a kind of blower fan that air-flow is realized air-supply.Present aerodynamic wind facility have structures such as pneumatic motor, fan blade, speed setting unit and shell; Complicated integral structure; Required precision is high, and fabricating cost is high, in most pressurized gass, contains moisture and greasy dirt; When pneumatic motor used for a long time, that the inner transmission of pneumatic motor, sealing configuration are prone to was aging, burn into stops up and causes decrease in efficiency or can't normally use; Pneumatic motor is through the rotation of rotor driven fan blade, and high speed rotating transmission commentaries on classics and fan blade cutting air all are prone to produce big noise, cause noise pollution.

Summary of the invention

The purpose of the utility model is that blower fan structure complicacy, the fabricating cost through pneumatic motor driving fan blade is high in the solution existing technology, and operating noise is big, and long-term use is prone to wear out, corrode; Deficiencies such as working life is short, and provide a kind of simple in structure, movement-less part; Easy to make, cost is low; Noise is low, long service life, the pneumatic no fan blade blower fan that need not safeguard.

In order to achieve the above object; The technological scheme that the utility model adopts is: a kind of pneumatic no fan blade blower fan; It is characterized in that comprising the nozzle of airduct and external pressurized gas, an end of airduct is provided with intake grill, and the other end of airduct is provided with the exhaust outlet of horn mouth structure outwardly; Nozzle is arranged at the middle part at airduct two ends and is communicated with the airduct inner chamber, and nozzle and intake grill are not parallel and towards the intake grill direction.

Said intake grill is horn mouth structure outwardly.

Said nozzle is a ring nozzle, and the ring nozzle annular is arranged at the middle part at airduct two ends.

Also comprise the air amplifying device that one-level is above, the air amplifying device is connected in sequence by collapsible tube, cavum laryngis and diffusing tube, and diffusing tube and collapsible tube all are the horn mouth structure of shrinking to cavum laryngis, and the exhaust outlet of airduct extends in the collapsible tube inner chamber; Diffusing tube extends in the collapsible tube inner chamber of next stage air amplifying device.

The exhaust outlet sectional area of said airduct is less than the cavum laryngis sectional area.

Leave the space between the collapsible tube of said collapsible tube and airduct exhaust outlet, diffusing tube and next stage air amplifying device.

The beneficial effect that the utlity model has is:

1, air compressor with pressurized air by ring nozzle aweather tube cavity spray at a high speed because the wall attachment effect of gas, pressurized gas is along the inwall flow at high speed of airduct to the exhaust outlet direction; And produce the low pressure zone draws air at bell mouth shape exhaust outlet inner chamber and flow into from the airduct intake grill, thereby realize the high speed air-supply of airduct, there are not motion, rotary component; The operation noise is low; Need not often safeguard, make, user cost is low, long service life;

2, behind the airduct exhaust outlet, connect air amplifying device more than the one-level; The air-flow of being seen off by the airduct exhaust outlet gets into cavum laryngis through collapsible tube, thereby produces the region of no pressure owing to receive the cavum laryngis barrier air at cavum laryngis and diffusing tube intersection, attracts air to get into from the collapsible tube mouth of pipe of air amplifying device; Mix after diffusing tube flows out with the air-flow of sending into by the airduct exhaust outlet; The air amplifying device utilizes Venturi principle to suck air in a large number, can effectively reduce blower fan air-out blast, improve blower fan air-out air quantity, compares pneumatic motor unit's air output and reduces with pressurized gas; Energy saving further reduces user cost.

The utility model blower fan employing ring nozzle aweather tube cavity is sent into pressurized air drive airduct intake grill air is realized no fan blade air-supply from blower fan to the exhaust outlet flow at high speed; Cooperate the above air amplifying device of one-level further to drive a large amount of air flow and improve the blower fan air output, this blower fan structure is simple, compact, does not have motion, rotary component; Non-maintaining; Low noise is made, user cost is low, long service life.

Description of drawings

Fig. 1 is the utility model structural representation.

Among the figure: airduct 1, ring nozzle 2, intake grill 3, exhaust outlet 4, air amplifying device 5, collapsible tube 8, cavum laryngis 7, diffusing tube 6.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is described further.

Shown in Figure 1, a kind of pneumatic no fan blade blower fan comprises airduct 1, ring nozzle 2 and air amplifying device 5.One end of airduct 1 is provided with the intake grill 3 of horn mouth structure outwardly, and the other end of airduct is provided with the exhaust outlet 4 of horn mouth structure outwardly, and ring nozzle 2 annulars are arranged at airduct 1 middle part and are communicated with the airduct inner chamber, and ring nozzle and intake grill are not parallel; Air amplifying device 5 is connected in sequence by collapsible tube 8, cavum laryngis 7 and diffusing tube 6; Diffusing tube 6 all is the horn mouth structure of shrinking to cavum laryngis with collapsible tube 8; The exhaust outlet 4 of airduct extends in collapsible tube 8 inner chambers; The exhaust outlet sectional area of airduct is less than cavum laryngis 7 sectional areas, and 4 of collapsible tube 8 and airduct exhaust outlets leave the space.

Only external main air amplifying device behind the foregoing description airduct; Can require to be provided with the multi-staged air amplifying device according to blower fan; The diffusing tube of upper level air amplifying device extends in the collapsible tube inner chamber of next stage air amplifying device, and leaves the space between the collapsible tube of the diffusing tube of upper level air amplifying device and next stage air amplifying device.

Claims

1. pneumatic no fan blade blower fan; It is characterized in that: the nozzle that comprises airduct and external pressurized gas; One end of airduct is provided with intake grill; The other end of airduct is provided with the exhaust outlet of horn mouth structure outwardly, and nozzle is arranged at the middle part at airduct two ends and is communicated with the airduct inner chamber, and nozzle and intake grill are not parallel.

2. pneumatic no fan blade blower fan according to claim 1, it is characterized in that: said intake grill is horn mouth structure outwardly.

3. pneumatic no fan blade blower fan according to claim 1, it is characterized in that: said nozzle is a ring nozzle, and the ring nozzle annular is arranged at the middle part at airduct two ends.

4. pneumatic no fan blade blower fan according to claim 1; It is characterized in that: also comprise the air amplifying device that one-level is above; The air amplifying device is connected in sequence by collapsible tube, cavum laryngis and diffusing tube; Diffusing tube and collapsible tube all are the horn mouth structure of shrinking to cavum laryngis, and the exhaust outlet of airduct extends in the collapsible tube inner chamber; Diffusing tube extends in the collapsible tube inner chamber of next stage air amplifying device.

5. pneumatic no fan blade blower fan according to claim 4, it is characterized in that: the exhaust outlet sectional area of said airduct is less than the cavum laryngis sectional area.

6. pneumatic no fan blade blower fan according to claim 4 is characterized in that: leave the space between the collapsible tube of said collapsible tube and airduct exhaust outlet, diffusing tube and next stage air amplifying device.