CN205260369U - Fan - Google Patents
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- CN205260369U CN205260369U CN201520964832.5U CN201520964832U CN205260369U CN 205260369 U CN205260369 U CN 205260369U CN 201520964832 U CN201520964832 U CN 201520964832U CN 205260369 U CN205260369 U CN 205260369U
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- impeller
- blower fan
- housing
- motor
- fan according
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Abstract
The utility model belongs to the technical field of the medical instrument technique and specifically relates to a fan is related to. This fan includes casing, impeller and motor, be provided with air intake and air outlet on the casing, the impeller is located the inside of casing, and be close to the air intake, the output shaft drive of motor is connected the impeller is so that gaseous following the air intake orientation the orientation of air outlet flows, the inside of casing is used for holding gaseous space and is the interior gas flow space of shell, in the shell gas flow space the volume with the volume of impeller be 15 -30 than the range of value. An object of the utility model is to provide a fan to improve the pressure of fan's output and the stability of flow.
Description
Technical field
The utility model relates to technical field of medical instruments, especially relates to a kind of blower fan.
Background technology
Blower fan is widely used in medical field, especially lung ventilator. In current clinical medicine, lung ventilator is as an energyThe effective means of artificial substituting expiratory positive airway pressure function, generally for during the respiratory failure due to a variety of causes, major operationIn anesthesia respiration management, breathing supportive treatment and emergency resuscitation, in Modern Medical Field, occupy very important position. BreatheMachine is that one can play prevention and treatment respiratory failure, reduces complication, saves and extends patients ' lives vitalMedical Devices.
But pressure and the instability of flow of the output of existing blower fan directly affect the quality of the Medical Devices such as lung ventilator,Even impact is saved and prolongation patients ' lives.
Utility model content
The purpose of this utility model is to provide a kind of blower fan, to improve the pressure of output and the stablizing of flow of blower fanProperty.
The utility model provides a kind of blower fan, comprises housing, impeller and motor; On described housing, be provided with air inlet andAir outlet;
Described impeller is positioned at the inside of described housing, and near described air inlet;
The output shaft of described motor drives and connects described impeller so that gas along described air inlet towards described air outletDirection flows;
The inside of described housing is gas flow space in shell for holding the space of gas; Gas flow sky in described shellBetween volume and the ratio range of the volume of described impeller be 15-30.
Further, in described shell, the ratio range of the volume of gas flow space and the volume of described impeller is 20-24.
Further, described air inlet is along the axial setting of described impeller; Described air outlet is radially established along described impellerPut.
Further, described air inlet place is provided with conducting element, the fixing company of outer surface of described conducting element and described housingConnect;
Described conducting element is axially zigzag shape along the output shaft of described motor.
Further, described impeller comprises chassis and is arranged on the multiple blades on described chassis; Described multiple blade aroundThe center on described chassis is evenly, interval is arranged;
Described blade is greater than the other end away from the center on described chassis near the height of the one end at the center on described chassisHeight;
Described blade is rounding off with described chassis and is connected.
Further, the outer surface of described housing is installed with respectively locating dowel and shockproof location protrusion rib; Described shockproof fixedRib is protruded ringwise in position.
Further, described housing comprises upper shell and lower house; Described air inlet is positioned on described lower house, described in go outAir port is positioned at the junction of described upper shell and described lower house;
Described upper shell is evenly provided with multiple described locating dowels, and described lower house is provided with described shockproof location and protrudesRib; The described shockproof location protrusion bearing of trend of rib and the axial direction of described locating dowel are consistent;
Described upper shell and described lower house are fastened and connected by buckle.
Further, described upper shell is provided with the groove adapting with described motor, and described motor is fixedly mounted on instituteState in groove;
Between described motor and described groove, be provided with shock absorber part.
Further, the contact-making surface of described upper shell and described lower house is provided with seal groove, described seal groove along described inContact-making surface extends; In described seal groove, be provided with sealing ring.
Further, described motor adopts brushless electric machine; The rotating speed of described brushless electric machine is 6000rpm-20000rpm;
The material of described housing is PC plastics; The inner chamber of described housing is vertical cyclindrical shape.
The blower fan that the utility model provides is in the time of work, and the output shaft drives impeller of motor is rotated, and impeller makes gas from enteringAir port enters gas flow space in shell, then flows out from air outlet; In conjunction with the high speed rotating speed of motor, be converted to gesture according to kinetic energyThe principle of energy, makes the impeller of High Rotation Speed that gas is accelerated, and then in the shell of certain volume, in gas flow space, slows down, changesUnsteady flow to, make kinetic energy convert potential energy to, this potential energy is pressure energy; Wherein, the volume of gas flow space and impeller in shellWhen the ratio range of volume is 15-30, gas when this blower fan work is more stable from pressure and the flow of air outlet output, moreAdd the requirement that meets needed by human body, especially meet the demand of patient to medicine equipments such as lung ventilators.
Brief description of the drawings
In order to be illustrated more clearly in the utility model detailed description of the invention or technical scheme of the prior art, below by rightIn detailed description of the invention or description of the Prior Art, the accompanying drawing of required use is briefly described, and apparently, the following describesIn accompanying drawing be embodiments more of the present utility model, for those of ordinary skill in the art, do not paying creativenessUnder the prerequisite of work, can also obtain according to these accompanying drawings other accompanying drawing.
The front view of the blower fan that Fig. 1 provides for the utility model embodiment;
The top view of the blower fan that Fig. 2 provides for the utility model embodiment;
The front view of the upper shell of the blower fan that Fig. 3 provides for the utility model embodiment;
Fig. 4 is the top view of the upper shell shown in Fig. 3;
The front view of the lower house of the blower fan that Fig. 5 provides for the utility model embodiment;
Fig. 6 is the top view of the lower house shown in Fig. 5;
The front view of the impeller of the blower fan that Fig. 7 provides for the utility model embodiment;
Fig. 8 is the top view of the impeller shown in Fig. 7;
Reference numeral:
1-housing; Gas flow space in 11-shell; 12-locating dowel;
13-protrudes rib in shockproof location; 14-upper shell; 141-groove;
15-lower house; 2-impeller; 21-chassis;
22-blade; 3-motor; 4-air inlet;
5-air outlet; 6-conducting element 7-buckle.
Detailed description of the invention
Below in conjunction with accompanying drawing, the technical solution of the utility model is clearly and completely described, obviously, describedEmbodiment is the utility model part embodiment, instead of whole embodiment. Based on the embodiment in the utility model, thisField those of ordinary skill, not making the every other embodiment obtaining under creative work prerequisite, all belongs to this practicalityNovel protected scope.
In description of the present utility model, it should be noted that term " " center ", " on ", D score, " left side ", " right side ", " perpendicularDirectly ", orientation or the position relationship of the instruction such as " level ", " interior ", " outward " be based on orientation shown in the drawings or position relationship, be onlyThe utility model and simplified characterization for convenience of description, instead of device or the element of instruction or hint indication must have specificOrientation, with specific orientation structure and operation, therefore can not be interpreted as restriction of the present utility model. In addition term ",One ", " second ", " the 3rd " be only for describing object, and can not be interpreted as instruction or hint relative importance.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " peaceDress ", " being connected ", " connection " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or integratedlyConnect; Can be mechanical connection, can be also electrical connection; Can be to be directly connected, also can indirectly be connected by intermediary,It can be the connection of two element internals. For the ordinary skill in the art, can concrete condition understand above-mentioned artThe concrete meaning of language in the utility model.
Embodiment
Shown in Fig. 1-Fig. 8, the present embodiment provides a kind of blower fan; Fig. 1 looks for the master of the blower fan that the present embodiment providesFigure, the top view that Fig. 2 is blower fan; Fig. 3 is the front view of upper shell, the top view that Fig. 4 is upper shell; Fig. 5 is the master of lower houseView, the top view that Fig. 6 is lower house; Fig. 7 is the front view of impeller, the top view that Fig. 8 is impeller; For more aobviousShow structure, Fig. 1, Fig. 7 are cutaway view.
Shown in Fig. 1-Fig. 8, the blower fan that the present embodiment provides, comprises housing 1, impeller 2 and motor 3; On housing 1, arrangeThere are air inlet 4 and air outlet 5.
Impeller 2 is positioned at the inside of housing 1, and near air inlet 4.
The output shaft of motor 3 drives and connects impeller 2, so that gas flows towards the direction of air outlet 5 along air inlet 4.
The inside of housing 1 is gas flow space 11 in shell for holding the space of gas; Gas flow space 11 in shellVolume and the ratio range of the volume of impeller 2 are 15-30.
When the work of blower fan described in the present embodiment, the output shaft drives impeller 2 of motor 3 is rotated, and impeller 2 makes gas from air intakeMouth 4 enters gas flow space 11 in shell, then flows out from air outlet 5; In conjunction with the high speed rotating speed of motor 3, change according to kinetic energyFor the principle of potential energy, the impeller 2 that makes High Rotation Speed accelerates gas, then in the shell of certain volume in gas flow space 11Slow down, change the flow direction, make kinetic energy convert potential energy to, this potential energy is pressure energy; Wherein, the volume of gas flow space 11 in shellWhile being 15-30 with the ratio range of the volume of impeller 2, pressure and flow that gas when this blower fan work is exported from air outlet 5More stable, more meet the requirement of needed by human body, especially meet the demand of patient to medicine equipments such as lung ventilators.
Gas flow space 11 also has the effect of dispelling the heat to the motor 3 running up in shell, has extended motor 3In service life, make be more than 53000 hours the service life of motor 3.
Preferably, in shell, the ratio range of the volume of gas flow space 11 and the volume of impeller 2 is 20-24; This ratioThe pressure that when scope has further improved described blower fan work, gas is exported from air outlet 5 and the stability of flow, further symbolClose the requirement of needed by human body, especially met the demand of patient to medicine equipments such as lung ventilators.
Wherein, motor 3 adopts brushless electric machine, and preferably, motor 3 adopts brshless DC motor; The rotating speed of brushless electric machine is6000rpm-20000rpm, so that the output shaft high-speed driving impeller 2 of motor 3 rotates, the gas of the applicable needed by human body of formationOutput pressure and flow; Table one listed the rotating speed of part motor 3 and the air outlet of blower fan 5 output pressure, output flow itBetween corresponding numerical value.
This blower motor of table one rotating speed and output pressure, output flow parameter
In the possibility of this enforcement, air inlet 4 is along the axial setting of impeller 2; Air outlet 5 is along the radially setting of impeller 2;To be converted to the principle of potential energy according to kinetic energy, utilize the impeller 2 of High Rotation Speed that gas is accelerated, gas is from axially entering impeller2, while flowing through the interior gas flow space 11 of impeller 2 and shell, change over radially output, because of the interior gas of gas flow space in shell 11Changed flow direction and further caused deceleration, and decelerating effect further converts kinetic energy to pressure energy, be more convenient to formMeet pressure and the flow of needed by human body.
In the possibility of this enforcement, air inlet 4 places are provided with conducting element 6, and conducting element 6 is fixed with the outer surface of housing 1Connect; Conducting element 6 is axially zigzag shape along the output shaft of motor 3. The conducting element 6 of zigzag shape can guide gas betterBody flows into air inlet 4 so that gas spiral enter air inlet 4 so that the inflow path of gas does not have turning round of wide-angle, noCan produce local eddy currents, meet the movement locus of gas, the noise producing can reduce gas flow time, can also increase and leafWheel 2 contact air inflows.
In the possibility of this enforcement, impeller 2 comprises chassis 21 and is arranged on the multiple blades 22 on chassis 21; Multiple leavesSheet 22 is evenly around 21 center, chassis, interval is arranged; Stability while being convenient to improve impeller 2 High Rotation Speed, has reduced Yin YeWheel 2 rotates noise unstable and that bring, has also extended the service life of impeller 2. Preferably, blade 22 is ten; Preferably,Blade 22 is formed in one with chassis 21, is convenient to the production and processing of impeller 2.
Blade 22 is greater than the height away from the other end at 21 center, chassis near the height of the one end at 21 center, chassis;So that gas flows in shell in gas flow space 11 along blade 22.
Blade 22 is rounding off with chassis 21 and is connected; To reduce the frictional force between impeller 2 and gas, and then reduceThe noise producing when gas flow, and reduce the unnecessary energy consumption that gas produces on impeller 2 surfaces.
In the possibility of this enforcement, the outer surface of housing 1 is installed with respectively locating dowel 12 and rib 13 is protruded in shockproof location;Rib 13 is protruded ringwise in shockproof location; The quantity of locating dowel 12 is 1 or multiple, for example, can be 1,2,3,5Deng; Protrude rib 13 by locating dowel 12 and shockproof location are set, better to locate, to fix described blower fan, reduce blower fan workTime produce vibrations, thereby reduce vibrations produce noise.
In the possibility of this enforcement, housing 1 comprises upper shell 14 and lower house 15, so that the assembling of blower fan; Air intakeMouth 4 is positioned on lower house 15, and air outlet 5 is positioned at the junction of upper shell 14 and lower house 15.
Upper shell 14 is evenly provided with multiple locating dowels 12, and lower house 15 is provided with shockproof location and protrudes rib 13; Shockproof fixedThe bearing of trend of position protrusion rib 13 is consistent with the axial direction of locating dowel 12. It is right respectively with locating dowel 12 that rib 13 is protruded in shockproof locationShould be arranged on upper-lower casing 15, make location, fixing described blower fan more accurate, be convenient to the shake producing while reducing blower fan workMoving.
In the possibility of this enforcement, upper shell 14 is fastened and connected by buckle 7 with lower house 15. Adopt buckle 7 formulas to connectThe mode of connecing is installed lower house 15, has avoided employing screw to connect because twisting screw and has firmly too suddenly made junction cracking, twists screwKick the beam and cause poorly sealed; Installation while being also convenient to produce in batches, has simplified mounting process, can make most of workmans learn very soonMeeting is also installed out standard compliant product; The error that each side is occurred drops to extremely low; Preferably, the quantity of buckle 7 is four,Evenly be arranged on blower fan surrounding.
In the possibility of this enforcement, upper shell 14 is provided with the groove 141 adapting with motor 3, and motor 3 fixedly mountsIn groove 141; To reduce the volume of described blower fan, be convenient to the miniaturization of blower fan volume.
Between motor 3 and groove 141, be provided with shock absorber part (belonging to prior art, not shown), when reducing workThe noise producing because of vibrations between motor 3 and housing 1. Described shock absorber part can be for example rubber blanket, silicagel pad, spring etc.
In the possibility of this enforcement, it is (not shown in the figures that the contact-making surface of upper shell 14 and lower house 15 is provided with seal grooveGo out), seal groove extends along contact-making surface; In seal groove, be provided with sealing ring (belonging to prior art, not shown). By sealingCircle prevents that the pressure in housing 1 from passing through the connecting sewing leakage between upper-lower casing 15, also prevent that the gas in housing 1 from passing through upperConnecting sewing between lower house 15 is revealed, and has ensured pressure and the flow of described blower fan output gas. The material of described sealing ringCan be for example rubber, silica gel etc.
In the possibility of this enforcement, the material of housing 1 is PC plastics. In the market adopt blower fan be mostly ABS,The material such as mixture, metal of ABS and PC is made, and this blower fan adopts the upper lower casing of full PC material, and product highly transparent is convenient to send outSome faults, the problem of existing blower fan; As when flabellum problem finding that there is, or in flabellum or casing, have abnormal, canWith eyes observation, without overhaul.
In the possibility of this enforcement, the inner chamber of housing 1 is that the inner chamber of vertical cyclindrical shape or housing 1 is approximately vertical cyclindrical shape; ?The inner chamber of upper shell 14 and lower house 15 is vertical cyclindrical shape, or the inner chamber of upper shell 14 and lower house 15 is all approximately right cylinderShape; Also be that in shell, the profile of gas flow space 11 is vertical cyclindrical shape or is approximately vertical cyclindrical shape; So that in the certain shell of guaranteeUnder the prerequisite of gas flow space 11, reduce the volume of blower fan; To reduce the resistance of gas gas flow space 11 in shell.
In order more clearly to understand described blower fan, below illustrate:
Blower fan adopts the housing of vertical cyclindrical shape, and the diameter of blower fan is 85mm-100mm, is highly 60mm-80mm.
Housing integral diameter is 85mm-100mm, is highly 35mm-45mm; Thickness of shell is 1.5mm-3mm.
Housing comprises upper shell and lower house, and upper shell and lower house are fastened and connected by square combination buckle, square groupThe quantity of closing buckle is four.
Upper shell is installed with three locating dowels; Locating dowel diameter is 8mm-10mm.
Air inlet is circular, diameter 15mm-25mm.
Air outlet is circular, diameter 15mm-25mm.
Finally it should be noted that: above each embodiment is only in order to the technical solution of the utility model to be described, but not to its limitSystem; Although the utility model is had been described in detail with reference to aforementioned each embodiment, those of ordinary skill in the art shouldUnderstand: its technical scheme that still can record aforementioned each embodiment is modified, or to wherein some or all ofTechnical characterictic is equal to replacement; And these amendments or replacement do not make the essence of appropriate technical solution depart from this practicality newlyThe scope of the each embodiment technical scheme of type.
Claims (10)
1. a blower fan, is characterized in that, comprises housing, impeller and motor; On described housing, be provided with air inlet and air outlet;
Described impeller is positioned at the inside of described housing, and near described air inlet;
The output shaft of described motor drives and connects described impeller so that gas along described air inlet the direction towards described air outletFlow;
The inside of described housing is gas flow space in shell for holding the space of gas; The interior gas flow space of described shellThe ratio range of the volume of volume and described impeller is 15-30.
2. blower fan according to claim 1, is characterized in that, volume and the described impeller of gas flow space in described shellThe ratio range of volume be 20-24.
3. blower fan according to claim 1 and 2, is characterized in that, described air inlet is along the axial setting of described impeller; InstituteState the radially setting of air outlet along described impeller.
4. blower fan according to claim 3, is characterized in that, described air inlet place is provided with conducting element, described conducting elementBe fixedly connected with the outer surface of described housing;
Described conducting element is axially zigzag shape along the output shaft of described motor.
5. blower fan according to claim 3, is characterized in that, described impeller comprises chassis and is arranged on described chassisMultiple blades; Described multiple blade is evenly around the center on described chassis, interval is arranged;
Described blade is greater than the height away from the other end at the center on described chassis near the height of the one end at the center on described chassisDegree;
Described blade is rounding off with described chassis and is connected.
6. blower fan according to claim 3, is characterized in that, the outer surface of described housing is installed with respectively locating dowel and anti-Rib is protruded in shake location; Rib is protruded ringwise in described shockproof location.
7. blower fan according to claim 6, is characterized in that, described housing comprises upper shell and lower house; Described air intakeMouth is positioned on described lower house, and described air outlet is positioned at the junction of described upper shell and described lower house;
Described upper shell is evenly provided with multiple described locating dowels, and described lower house is provided with described shockproof location and protrudes rib; InstituteState the shockproof location protrusion bearing of trend of rib and the axial direction of described locating dowel consistent;
Described upper shell and described lower house are fastened and connected by buckle.
8. blower fan according to claim 7, is characterized in that, described upper shell be provided with described motor adapt recessedGroove, described motor is fixedly mounted in described groove;
Between described motor and described groove, be provided with shock absorber part.
9. blower fan according to claim 7, is characterized in that, the contact-making surface of described upper shell and described lower house is provided withSeal groove, described seal groove extends along described contact-making surface; In described seal groove, be provided with sealing ring.
10. blower fan according to claim 1 and 2, is characterized in that, described motor adopts brushless electric machine; Described brushless electricityThe rotating speed of machine is 6000rpm-20000rpm;
The material of described housing is PC plastics; The inner chamber of described housing is vertical cyclindrical shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520964832.5U CN205260369U (en) | 2015-11-27 | 2015-11-27 | Fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520964832.5U CN205260369U (en) | 2015-11-27 | 2015-11-27 | Fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205260369U true CN205260369U (en) | 2016-05-25 |
Family
ID=56001899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520964832.5U Expired - Fee Related CN205260369U (en) | 2015-11-27 | 2015-11-27 | Fan |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205260369U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298880A (en) * | 2015-11-27 | 2016-02-03 | 吉林省沃鸿医疗器械制造有限公司 | Fan |
-
2015
- 2015-11-27 CN CN201520964832.5U patent/CN205260369U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298880A (en) * | 2015-11-27 | 2016-02-03 | 吉林省沃鸿医疗器械制造有限公司 | Fan |
| CN105298880B (en) * | 2015-11-27 | 2017-12-22 | 吉林省沃鸿医疗器械制造有限公司 | Blower fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160525 Termination date: 20211127 |