CN206206263U

CN206206263U - A kind of impeller of air blower

Info

Publication number: CN206206263U
Application number: CN201621123282.5U
Authority: CN
Inventors: 华钊业
Original assignee: NORTH-SOUTHERN ELECTRONICS Ltd
Current assignee: Guangzhou and Health Technology Co., Ltd.
Priority date: 2016-10-14
Filing date: 2016-10-14
Publication date: 2017-05-31
Anticipated expiration: 2026-10-14

Abstract

The utility model is related to the air-blast device technical field of medical breathing apparatus, more particularly to a kind of impeller of air blower, including upper lid, lower cover, and it is arranged on the blade between lid and lower cover, upper lid is provided centrally with air admission hole, and lower cover includes lid and the axle sleeve perpendicular to lid；Blade includes the first blade being uniformly arranged around air admission hole, and with the first blade one-to-one corresponding and near the second blade of lower cover outer rim；Higher-pressure region gap is provided between the front end of the rear end of the first blade and the second blade.When the impeller of the air blower works, air-flow enters from the gap between adjacent first blade, and a part is directly entered the gap between second adjacent blade；Another part then first passes through the higher-pressure region gap between the first blade and the second blade, then by the second blade.Air-flow is conducive to swimmingly flowing by effective shunting, reduces radiated noise, and next region is flowed into again after being especially that airflow through higher-pressure region gap, serves more effective erasure effect.

Description

A kind of impeller of air blower

Technical field

The utility model is related to the air-blast device technical field of medical breathing apparatus, more particularly to a kind of leaf of air blower Wheel.

Background technology

Used as a device with artificial ventilation's function, breathing declines lung ventilator caused by being commonly used to a variety of causes Exhaust, in the treatment of disease such as sleep apnea low-ventilatory syndrome, it occupies highly important position in Modern Medical Field Put.Application especially recently as electronic technology in lung ventilator field so that lung ventilator technology is developed rapidly, people Requirement to its performance also more and more higher.Blower fan is the core component in lung ventilator, and its effect is the machine by input Tool energy, improves gas pressure and conveys gas, improves the foster conjunction and ventilation of patient, reduces breathing acting, supports breathing and circulates Function and carry out the treatment of respiratory failure.

The performance of lung ventilator is influenceed by Multiple factors, wherein, the influence of noise is its most intuitively technical indicator, and is made an uproar The main source of sound is exactly the rotational noise that blower wheel is produced.

Existing blower impeller structure almost with the common similar moulding of fan blade, impeller run at high speed it is same When, according to hydromechanical principle, because of powerful wind resistance so that can more or less form wind backflow, whirlpool at impeller outlet Etc. irregular motion, and then, can cause that impeller produces the dynamic noise of certain sound, the rest of patient is influenceed, may when serious The mood for causing user to contradict product.

Therefore, noninvasive ventilator is to obtain good muting function, it is necessary to pay the utmost attention to design a kind of drum of low noise The blade wheel structure of wind apparatus.There is problem for of the prior art, need badly and a kind of air-blast device noise of can eliminating is provided Blade wheel structure is particularly important.

Utility model content

The purpose of this utility model is to avoid weak point of the prior art and provide a kind of impeller of air blower, should The blade wheel structure of air blower is simple, can effectively reduce wind backflow, whirlpool etc. and irregularly flow, and reduces making an uproar for air blower Sound.

The purpose of this utility model is achieved through the following technical solutions：

A kind of impeller of air blower, including upper lid, lower cover are provided, and are arranged on the leaf between the upper lid and lower cover Piece, the upper lid is provided centrally with air admission hole, and the lower cover includes lid and the axle sleeve perpendicular to the lid；The leaf Piece includes the first blade for being uniformly arranged around air admission hole, and is corresponded with the first blade and near the of lower cover outer rim Two blades；Higher-pressure region gap is provided between the rear end of first blade and the front end of the second blade.

Wherein, the upper lid, lower cover and blade are formed in one structure.

Wherein, the upper lid is gradually transitions peripheral edge in the way of radius of curvature becomes larger from the air admission hole.

Wherein, first blade and the second blade are circular arc vane.

Wherein, the height of the blade is tapered into from front end to rear end.

Wherein, the length of first blade is the twice of the length of the second blade.

Wherein, the impeller is plastic ＆ rubber blade.

The beneficial effects of the utility model are：

The impeller of the air blower uses multistage blade, sets higher-pressure region gap, and when impeller works, air-flow is from adjacent first leaf Gap between piece enters, and a part is directly entered the gap between second adjacent blade；Another part then first passes through the first leaf Higher-pressure region gap between piece and the second blade, then by the second blade.Air-flow is conducive to swimmingly flowing by effective shunting It is dynamic, radiated noise is reduced, next region is flowed into again after being especially that airflow through higher-pressure region gap, serve more effective noise reduction Effect.The blade wheel structure of the air blower is simple, can effectively reduce wind backflow, whirlpool etc. and irregularly flow, and reduces air blast The noise of machine.

Brief description of the drawings

The utility model is described further using accompanying drawing, but content in accompanying drawing is not constituted to of the present utility model What is limited.

Fig. 1 is a kind of structural representation of the impeller of air blower of the present utility model.

Fig. 2 is the structural representation covered in Fig. 1 removals.

Fig. 3 is the structural representation of another angle of Fig. 2.

Included in Fig. 1 to Fig. 3：

1 --- upper lid；

2 --- lower cover；

3 --- the first blade；

4 --- the second blade；

5 --- higher-pressure region gap；

6 --- air admission hole.

Specific embodiment

In order that the object, technical solution and advantage of utility model become more apparent, below in conjunction with drawings and Examples, The utility model is further elaborated.

Embodiment

A kind of one of implementation method of impeller of air blower of the present utility model, as shown in Figure 1 to Figure 3, including upper lid 1, Lower cover 2, and be arranged on the blade between lid 1 and lower cover 2, upper lid 1 is provided centrally with air admission hole 6, and lower cover 2 includes lid And perpendicular to the axle sleeve of lid；Blade includes the first blade 3 for being uniformly arranged around air admission hole 6, and with the first blade 3 one Second blade 4 of one correspondence and the close outer rim of lower cover 2；Height is provided between the front end of the rear end of the first blade 3 and the second blade 4 Nip gaps 5.

The impeller of the air blower uses multistage blade, sets higher-pressure region gap 5, and when impeller works, air-flow is from adjacent first Gap between blade 3 enters, and a part is directly entered the gap between second adjacent blade 4；Another part then first passes through Higher-pressure region gap 5 between one blade 3 and the second blade 4, then by the second blade 4.Air-flow is conducive to by effective shunting Swimmingly flow, reduce radiated noise, next region is flowed into again after being especially that airflow through higher-pressure region gap 5, serve more Effective erasure effect.

Wherein, the upper lid 1, lower cover 2 and blade are formed in one structure.Integrated formed structure processing technology is simple, keeps away Secondary connection is exempted from, just can solve completion using one set of die processes, and increased the qualification rate of product, it is to avoid secondary operation mistake Noise in journey caused by error.

Wherein, upper lid 1 is gradually transitions peripheral edge in the way of radius of curvature becomes larger from air admission hole 6.Wherein, leaf The height of piece is tapered into from front end to rear end.The radius of curvature of upper lid 1 becomes larger, accordingly, then the first blade 3, second The height of blade 4 is tapered into, and is largely entered equivalent to air-flow, then slow outflow impeller, reduces the biography of air-flow too precipitate labor life Bone conduction noise, serves sound deadening.

Wherein, the first blade 3 and the second blade 4 are circular arc vane.The blade of circular arc can make to play water conservancy diversion Effect, reduces the irregular flow directions such as backflow, the vortex of wind, and then reduce the resistance and air pressure of wind, enabling reduce Conducted noise, further functions as erasure effect.

Wherein, the length of the first blade 3 is the twice of the length of the second blade 4.Throughput between the first blade 3 is larger, The water conservancy diversion time more long is needed, by the twice that the length of the first blade 3 is arranged to the length of the second blade 4 is obtained by test of many times To optimum, best erasure effect can be reached using the ratio.

Wherein, impeller is plastic ＆ rubber blade.The material selection plastic cement material of impeller, can mitigate the quality of lung ventilator, and It is more safe and reliable.

The blade wheel structure of the air blower is simple, can effectively reduce wind backflow, whirlpool etc. and irregularly flow, and reduces drum The noise of blower fan.

Finally it should be noted that above example is merely to illustrate the technical solution of the utility model rather than to this practicality The limitation of novel protected scope, although being explained in detail to the utility model with reference to preferred embodiment, the common skill of this area Art personnel should be appreciated that can modify or equivalent to the technical solution of the utility model, without deviating from this practicality The spirit and scope of new technique scheme.

Claims

1. a kind of impeller of air blower, it is characterised in that：Including upper lid, lower cover, and it is arranged between the upper lid and lower cover Blade, the upper lid is provided centrally with air admission hole, and the lower cover includes lid and the axle sleeve perpendicular to the lid；Institute Stating blade includes the first blade being uniformly arranged around air admission hole, and is corresponded with the first blade and be close to lower cover outer rim The second blade；Higher-pressure region gap is provided between the rear end of first blade and the front end of the second blade.

2. the impeller of a kind of air blower according to claim 1, it is characterised in that：The upper lid, lower cover and blade are one Forming structure.

3. the impeller of a kind of air blower according to claim 1, it is characterised in that：The upper lid is gradually become with radius of curvature Big mode is gradually transitions peripheral edge from the air admission hole.

4. the impeller of a kind of air blower according to claim 3, it is characterised in that：First blade and the second blade are equal It is circular arc vane.

5. the impeller of a kind of air blower according to claim 3, it is characterised in that：The height of the blade is from front end to rear End tapers into.

6. the impeller of a kind of air blower according to claim 3, it is characterised in that：The length of first blade is second The twice of the length of blade.

7. the impeller of a kind of air blower according to any one of claim 1 to 6, it is characterised in that：The impeller is plastic cement Impeller.