CN206054333U - Blower fan - Google Patents

Abstract

This utility model is related to technical field of medical instruments, more particularly to a kind of blower fan.The blower fan includes：Housing, is provided with air inlet and air outlet on the housing；The bearing of trend for extending perpendicularly to the air outlet of the air inlet；The outer surface of the side wall of the housing is in Polygonal column shape, and the inner surface of the side wall of the housing is in right cylindrical；Impeller, the impeller are located at the inside of the housing, and near the air inlet；And motor, impeller described in the output shaft drive connection of the motor, so that gas flows towards the direction of the air outlet along the air inlet.The purpose of this utility model is to provide blower fan, to improve firmness and stability when blower fan is fixedly mounted, to reduce the noise of blower fan.

Description

Blower fan

Technical field

This utility model is related to technical field of medical instruments, more particularly to a kind of blower fan.

Background technology

Blower fan is that the mechanical energy of rotation is converted to gas kinetic energy, and the machinery that gas is transferred out；The machinery is extensively Medical field is applied to, especially respirator.In current clinical medicine, respirator can artificial substituting expiratory positive airway pressure as one The effective means of function, has been commonly used to the respiratory failure caused by a variety of causes, the management of the anesthesia respiration during major operation, breathing In Supporting Therapy and emergency resuscitation, occupy highly important position in Modern Medical Field.Respirator is that one kind can be played Prevention and treatment respiratory failure, reduces complication, saves and extend the vital armarium of patients ' lives.

But existing blower fan, as the housing for adopting is in cylinder or ladder circle cylindricality, cause in fixed installation There is a problem of that firmness is poor, stability is poor, and then cause the housing in blower fan work easily to produce vibration, and then easily produce Noise.And patient needs a quiet environment, the noise that blower fan is produced to be unfavorable for patients ' recovery when rest is treated.In addition, When blower fan is fixedly mounted, firmness is poor, stability is poor, is also easy to directly or indirectly affect the quality of the armarium such as respirator.

Utility model content

The purpose of this utility model is to provide blower fan, to improve firmness and stability when blower fan is fixedly mounted, with Reduce the noise of blower fan.

The blower fan that this utility model is provided, including：

Housing, is provided with air inlet and air outlet on the housing；The air inlet extend perpendicularly to it is described go out The bearing of trend in air port；The outer surface of the side wall of the housing is in Polygonal column shape, and the inner surface of the side wall of the housing is in straight circle Cylindricality；

Impeller, the impeller are located at the inside of the housing, and near the air inlet；

And motor, impeller described in the output shaft drive connection of the motor so that gas along the air inlet towards institute State the direction flowing of air outlet.

Further, the outer surface of the side wall of the housing is in positive Polygonal column shape.

Further, side number of the outer surface of the side wall in Polygonal column shape is 6-16.

Further, side number of the outer surface of the side wall in Polygonal column shape is 11-15.

Further, the outer surface of the housing is fixedly installed locating dowel；The cross section of the locating dowel is in Long Circle.

Further, the air inlet is along the axially arranged of the impeller；The air outlet is set along the radial direction of the impeller Put；

The air inlet is provided with conducting element, and the conducting element is fixedly connected with the outer surface of the housing；

Axial helically wire of the conducting element along the output shaft of the motor.

Further, the housing includes upper shell and lower house；The air inlet be located at the lower house on, it is described go out Air port is located at the junction of the upper shell and the lower house；

The upper shell is evenly arranged with multiple locating dowels；The axle of the axial direction of the locating dowel and the impeller It is consistent to direction；

The upper shell is fastened and connected by buckle with the lower house.

Further, the buckle protrudes from the upper shell or the lower house；The thickness of the buckle is 1mm- 2mm。

Further, the upper shell is provided with the groove being adapted with the motor, and the motor is fixedly mounted on institute State in groove；

Shock absorber part is provided between the motor and the groove.

Further, the upper shell is provided with seal groove with the contact surface of the lower house, and the seal groove is along described Contact surface extends；Sealing ring is provided with the seal groove；

The motor adopts brushless electric machine；The rotating speed of the brushless electric machine is 6000rpm-20000rpm；

The material of the housing is PC plastics.

The blower fan that this utility model is provided, including housing, and air inlet and air outlet are provided with housing, also including leaf Wheel, impeller are located at the inside of housing and near air inlet, and including motor, the output shaft drive connection impeller of motor, with logical Cross motor order about gas along air inlet towards air outlet direction flow；By the air outlet of extending perpendicularly to of air inlet Gas so that the principle of potential energy is converted to according to kinetic energy, is accelerated, so that gas is from entering by bearing of trend using the impeller of high speed rotation Air port enters impeller, changes outbound course and export along air outlet after flowing through impeller, so that gas slows down because changing flow direction, Noise is reduced with the decelerating effect by gas；It is in Polygonal column shape by the outer surface of the side wall of housing, is existed with improving housing Firmness and stability during fixed installation, and then firmness and stability when blower fan is fixedly mounted are improved, reduce blower fan and exist The Oscillation Amplitude that housing is produced during work, and then reduce the noise of blower fan；Additionally, the outer surface of the side wall of housing is in many side columns Shape, is in right cylindrical with its inner surface, the two combination, the wall thickness of the side wall of housing at post rib, more than housing side wall it is outer, Wall thickness of the inner surface in cylinder, reduce further the noise of blower fan.

Description of the drawings

In order to be illustrated more clearly that this utility model specific embodiment or technical scheme of the prior art, below will be right Needed for specific embodiment or description of the prior art, accompanying drawing to be used is briefly described, it should be apparent that, describe below In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness On the premise of work, can be with according to these other accompanying drawings of accompanying drawings acquisition.

The front view of the blower fan that Fig. 1 is provided for this utility model embodiment；

Another front view of the blower fan that Fig. 2 is provided for this utility model embodiment；

Fig. 3 is the upward view of the blower fan shown in Fig. 2；

Fig. 4 is the left view of the blower fan shown in Fig. 2.

Reference：

110- housings；111- air inlets；112- air outlets；

113- upper shells；114- lower houses；115- grooves；

120- locating dowels；130- conducting elements；140- buckles.

Specific embodiment

The technical solution of the utility model is clearly and completely described below in conjunction with accompanying drawing, it is clear that described Embodiment is a part of embodiment of this utility model, rather than the embodiment of whole.Based on the embodiment in this utility model, this The every other embodiment obtained under the premise of creative work is not made by field those of ordinary skill, belongs to practical Novel protected scope.

In description of the present utility model, it should be noted that term " " center ", " on ", D score, "left", "right", " perpendicular Directly ", the orientation or position relationship of the instruction such as " level ", " interior ", " outward " is, based on orientation shown in the drawings or position relationship, to be only For the ease of describe this utility model and simplify description, rather than indicate or imply indication device or element must have it is specific Orientation, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.Additionally, term " the One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that indicating or implying relative importance.

In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " peace Dress ", " being connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected, or be detachably connected, or integratedly Connection；Can be mechanically connected, or electrically connect；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, It can be the connection of two element internals.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition Concrete meaning of the language in this utility model.

Embodiment

Referring to shown in Fig. 1-Fig. 4, a kind of blower fan is present embodiments provided；The wind that Fig. 1 is provided for this utility model embodiment The front view of machine, the side number of the outer surface in Polygonal column shape of its side wall is 6；The blower fan that Fig. 2 is provided for this utility model embodiment Another front view, the side number of the outer surface of its side wall in Polygonal column shape is 12；Fig. 3 is the upward view of the blower fan shown in Fig. 2；Figure 4 is the left view of the blower fan shown in Fig. 2.

Referring to shown in Fig. 1-Fig. 4, the blower fan that the present embodiment is provided, including：

Housing 110, is provided with air inlet 111 and air outlet 112 on housing 110；Air inlet 111 is extended perpendicularly to The bearing of trend of air outlet 112；The outer surface of the side wall of housing 110 is in Polygonal column shape；The inner surface of the side wall of housing 110 is in straight Cylinder.By side wall of the outer surface in Polygonal column shape, in order to the production and processing of housing 110, the assembling of housing 110 is also convenient for With installation.

Impeller (not shown), impeller are located at the inside of housing 110, and near air inlet 111.

And motor (not shown), the output shaft drive connection impeller of motor, so that gas is along 111 direction of air inlet The direction flowing of air outlet 112.

Blower fan described in the present embodiment, including housing 110, and air inlet 111 and air outlet are provided with housing 110 112, also including impeller, impeller is located at the inside of housing 110 and near air inlet 111, and including motor, the output shaft of motor Drive connection impeller, is flowed towards the direction of air outlet 112 along air inlet 111 with ordering about gas by motor；By air inlet 111 bearing of trend for extending perpendicularly to air outlet 112, so that the principle of potential energy is converted to according to kinetic energy, is revolved using high speed Gas is accelerated by the impeller for turning, so that gas enters impeller from air inlet 111, changes outbound course along air outlet after flowing through impeller 112 outputs, so that gas slows down because changing flow direction, reduce noise with the decelerating effect by gas；By housing The outer surface of 110 side wall is in Polygonal column shape, to improve firmness and stability of the housing 110 in fixed installation, Jin Erti Firmness and stability when high blower fan is fixedly mounted, reduces the blower fan Oscillation Amplitude that operationally housing 110 is produced, and then drops The noise of low blower fan；Additionally, the outer surface of the side wall of housing 110 is in Polygonal column shape, and it is in right cylindrical with its inner surface, the two knot Close, the wall thickness of the side wall of housing 110 at post rib, wall thickness of the outer of side wall, inner surface more than housing 110 in cylinder, Reduce further the noise of blower fan.

In the alternative of the present embodiment, the outer surface of the side wall of housing 110 is in positive Polygonal column shape, in order to housing 110 Production and processing.Further, the axis of the inner surface of the side wall of the axis of the outer surface of the side wall of housing 110 and housing 110 Overlap, to be further easy to the production and processing of housing 110, be also convenient for uniformly reducing the noise of blower fan.

Alternatively, side number of the outer surface of side wall in Polygonal column shape is 6-16；Side of the outer surface of side wall in Polygonal column shape Numerical example can such as be 7,8,9,12,15 etc.；Preferably, side number of the outer surface of side wall in Polygonal column shape is 11-15.

Preferably, the outer surface of side wall is in positive 12 side column shape.

In the alternative of the present embodiment, the outer surface of housing 110 is fixedly installed locating dowel 120；The horizontal stroke of locating dowel 120 Section is in Long Circle.By oblong locating dowel 120, so that Blower Housing 110 is firmly fixed, housing when reducing blower fan work 110 produce vibrations, so as to reduce the noise that the vibrations of housing 110 are produced.The quantity of locating dowel 120 is for 1 or multiple, for example may be used Think 2,3,4,5 etc.；Preferably, the quantity of locating dowel 120 is 3.

Alternatively, the outer surface of housing 110 is further fixedly arranged on shockproof positioning protrusion rib (not shown)；Wherein, prevent Shake positioning protrusion rib is in a ring.By arranging shockproof positioning protrusion rib, to improve the firmness and stability of fixed blower fan, to subtract The vibrations produced during few blower fan work, so as to reduce shaking the noise for producing.

In the alternative of the present embodiment, air inlet 111 is along the axially arranged of impeller；Radial direction of the air outlet 112 along impeller Arrange, namely the bearing of trend for extending perpendicularly to air outlet 112 of air inlet 111, to be converted to potential energy according to kinetic energy Principle, gas is accelerated using the impeller of high speed rotation, so that gas change over after impeller footpath from flowing through axially into impeller To output, so that gas slows down because changing flow direction, noise is reduced with the decelerating effect by gas.

Alternatively, conducting element 130 is provided with air inlet 111, conducting element 130 is fixedly connected with the outer surface of housing 110； Introduced gas into inside housing 110 with will pass through conducting element 130, namely import blower interior.

Axial helically wire of the conducting element 130 along the output shaft of motor.The helically wire of conducting element 130, so that gas Along the entrance air inlet 111 of 130 spiral of conducting element, so that the inflow path of gas does not have turning round for wide-angle, office will not be produced Bilge vortex, meets the movement locus of gas, can reduce the noise that produces when gas flows, additionally it is possible to increase contact with impeller into Tolerance.

Further, the blade of impeller is in streamlined, to reduce the resistance of air-flow, can also reduce air-flow and produce at impeller The little vortex of life, and then reduce the noise produced when gas flows.

In the alternative of the present embodiment, housing 110 includes upper shell 113 and lower house 114；Air inlet 111 is located at down On housing 114, air outlet 112 is located at the junction of upper shell 113 and lower house 114.Preferably, air outlet 112 with straight circle The inner surface of the 110 side wall of housing of cylindricality is tangent, to reduce the resistance of gas output, reduces gas and produces whirlpool in housing 110 Stream, and then reduce the noise produced because of the vortex.

Upper shell 113 is evenly arranged with multiple locating dowels 120, the axial direction of locating dowel 120 and the axial direction of impeller Unanimously；To improve the firmness and stability of fixed blower fan, to reduce the vibrations produced during blower fan work, produce so as to reduce vibrations Raw noise.

Further, lower house 114 is provided with shockproof positioning protrusion rib in a ring；The extension side of shockproof positioning protrusion rib To consistent with the axial direction of locating dowel 120；Preferably, shockproof positioning protrusion rib and locating dowel 120 be correspondingly arranged at respectively, On lower house 114.

Alternatively, upper shell 113 is fastened and connected by buckle 140 with lower house 114.Using 140 side of being fastened and connected of buckle Formula installs upper-lower casing, it is to avoid using mode connects for screw make because twisting screw Dipeptiven and being violent junction cracking, twist screw kick the beam and Cause poorly sealed；The installation being also convenient for when producing in batches, simplifies mounting process, most of workmans can be made to learn quickly and pacify Take on standard compliant product；Drop to the error that each side occur extremely low.The quantity of buckle 140 for example can for 3,5, 6 etc.；Preferably, the quantity of buckle 140 is four, is uniformly arranged on blower fan surrounding.

Further, buckle 140 protrudes from upper shell 113 or lower house 114；The thickness of buckle 140 is 1mm-2mm. Blower fan of the housing 110 in cylinder, if fruit connects using buckle 140, the thickness of the protrusion of its buckle 140 is 4mm-5mm, thickness Thicker, the space of occupancy is larger, and is unfavorable for the fixation of housing 110, have impact on the stability and firmness of assembling；And this The outer surface of the side wall of application has plane, greatly reduces the thickness of buckle 140, the thickness of buckle 140 can be down to 1mm- 2mm, the space of occupancy are less, have substantially no effect on the fixation of housing 110, improve the stability and firmness of assembling.

In the alternative of the present embodiment, upper shell 113 is provided with the groove 115 being adapted with motor, and motor fixes peace It is mounted in groove 115；In order to fixedly mount motor, so that motor installation is more firm, reduces motor and operationally produce Vibration, while the volume of blower fan can also be made to reduce.

Shock absorber part (belonging to prior art, do not show in figure) is provided between motor and groove 115, to reduce electricity during work Because of noise that vibrations are produced between machine and housing 110.The shock absorber part can for example be rubber blanket, silicagel pad, spring etc..

In the alternative of the present embodiment, upper shell 113 is provided with seal groove, seal groove with the contact surface of lower house 114 Extend along contact surface；Sealing ring is provided with seal groove；By sealing ring, prevent the pressure in housing 110 from passing through upper-lower casing Between connecting sewing reveal, namely prevent gas in housing 110 from revealing by the connecting sewing between upper-lower casing, ensured institute State the flow that blower fan exports gas.The material of sealing ring can for example be rubber, silica gel etc..

Motor adopts brushless electric machine；Preferably, motor adopts brshless DC motor；The rotating speed of brushless electric machine is 6000rpm- 20000rpm；So as to the output shaft high-speed driving wheel rotation of motor.

The material of housing 110 is PC plastics.The blower fan for adopting in the market be mostly ABS, ABS and PC mixture, The materials such as metal are made, upper lower casing of this blower fan using full PC materials, product highly transparent, are easy to find some events of blower fan Barrier, problem；During flabellum problem as finding to have, or there is exception in flabellum or casing, eye observation can be used, Without overhaul.

Finally it should be noted that：Various embodiments above is only illustrating the technical solution of the utility model, rather than which is limited System；Although being described in detail to this utility model with reference to foregoing embodiments, one of ordinary skill in the art should Understand：Which still can be modified to the technical scheme described in foregoing embodiments, or to which part or whole Technical characteristic carries out equivalent；And these modifications or replacement, do not make the essence of appropriate technical solution depart from this practicality new The scope of each embodiment technical scheme of type.

Claims (10)

1. a kind of blower fan, it is characterised in that include：

Housing, is provided with air inlet and air outlet on the housing；The air inlet extends perpendicularly to the air outlet Bearing of trend；The outer surface of the side wall of the housing is in Polygonal column shape, and the inner surface of the side wall of the housing is in right cylindrical；

Impeller, the impeller are located at the inside of the housing, and near the air inlet；

And motor, impeller described in the output shaft drive connection of the motor so that gas along the air inlet towards it is described go out The direction flowing in air port.

2. blower fan according to claim 1, it is characterised in that the outer surface of the side wall of the housing is in positive Polygonal column shape.

3. blower fan according to claim 2, it is characterised in that side number of the outer surface of the side wall in Polygonal column shape is 6- 16。

4. blower fan according to claim 3, it is characterised in that side number of the outer surface of the side wall in Polygonal column shape be 11-15。

5. the blower fan according to any one of claim 1-4, it is characterised in that the outer surface of the housing is fixedly installed fixed Position post；The cross section of the locating dowel is in Long Circle.

6. blower fan according to claim 5, it is characterised in that the air inlet is axially arranged along the impeller；It is described Air outlet is radially arranged along the impeller；

The air inlet is provided with conducting element, and the conducting element is fixedly connected with the outer surface of the housing；

Axial helically wire of the conducting element along the output shaft of the motor.

7. blower fan according to claim 5, it is characterised in that the housing includes upper shell and lower house；The air intake Mouth is located on the lower house, and the air outlet is located at the junction of the upper shell and the lower house；

The upper shell is evenly arranged with multiple locating dowels；The axial direction side of the axial direction of the locating dowel and the impeller To consistent；

The upper shell is fastened and connected by buckle with the lower house.

8. blower fan according to claim 7, it is characterised in that the buckle protrudes from the upper shell or the lower casing Body；The thickness of the buckle is 1mm-2mm.

9. blower fan according to claim 7, it is characterised in that the upper shell is provided with recessed with what the motor was adapted Groove, the motor are fixedly mounted in the groove；

Shock absorber part is provided between the motor and the groove.

10. blower fan according to claim 7, it is characterised in that the upper shell is arranged with the contact surface of the lower house There is seal groove, the seal groove extends along the contact surface；Sealing ring is provided with the seal groove；

The motor adopts brushless electric machine；The rotating speed of the brushless electric machine is 6000rpm-20000rpm；

The material of the housing is PC plastics.