RespiratorTechnical field
The present invention relates to technical field of medical instruments, especially relate to a kind of respirator.
Background technology
In current clinical medicine, respirator is as the effective means of an energy artificial substituting expiratory positive airway pressure function, be commonly used in the respiratory failure caused by a variety of causes, the management of the anesthesia respiration during major operation, Breathing Suppotion treatment and emergency resuscitation, in Modern Medical Field, occupied very important position.Respirator is that one can play prevention and therapy respiratory failure, reduces complication, saves and extend the vital armarium of patients ' lives.
But existing respirator is by adopting high-speed fan in the inner, causes noise in use comparatively large, affecting patient and have a rest, and then affect patients ' recovery.
Summary of the invention
The object of the present invention is to provide a kind of respirator, to solve the larger technical problem of the noise that exists in prior art.
The invention provides a kind of respirator, comprise blower fan cabin and blower fan, described blower fan cabin comprises the first housing and the second housing, and described first housing is coated at described second housing;
Described blower fan is positioned at described second housing, and is fixedly connected with described second housing;
Be provided with damping device between described first housing and described second housing, and/or be provided with damping device between described second housing and described blower fan.
Further, described damping device is damping cotton or damping rubber pad.
Further, described damping device is damping sound insulation filter pulp.
Further, described first housing comprises the first upper shell and the first lower house, and described first upper shell and described first lower house are fastened and connected by buckle.
Further, described respirator also comprises water tank, and described water tank is fixedly connected with described first housing; Described water tank bottom is installed with electrons heat plate; Described electrons heat plate is for heating the liquid in described water tank;
Described respirator comprises input port and delivery outlet; Described blower fan flows along described input port towards the direction of described delivery outlet for ordering about gas;
The described gas flow that described blower fan exports is through the liquid level top layer of described water tank, flows in the direction towards described delivery outlet;
Described respirator also comprises defecator, and described defecator is near described input port; Described defecator comprises air filter film and/or fine filtration membrane.
Further, be provided with outer cabin and interior cabin in described second housing, described interior freight space is inner in described outer cabin;
Be provided with outer cabin air inlet between described outer cabin and described interior cabin, described outer cabin is also provided with outer cabin air outlet;
Multiple splitter is installed with in described outer cabin; Described multiple splitter is near described outer cabin air outlet;
Described multiple splitter is arranged along the cross-wise direction interval that gas flows, and extends along gas flow direction;
Described interior cabin is used for fixing blower fan, and described blower fan is used for making gas in this blower fan flow through described multiple splitter from described outer cabin air inlet, flows to described outer cabin air outlet.
Further, the splitter between adjacent described splitter is apart from equal; The length of described splitter and the ratio of described splitter distance are greater than 10, and described splitter is 1.5mm-2.5mm apart from scope.
Further, described outer cabin is installed with pressure transducer hole and flow transducer hole; Along described gas flow direction, be respectively equipped with described flow transducer hole near the two ends of described multiple splitter; Described pressure transducer hole is provided with between described multiple splitter and described outer cabin air outlet;
Described pressure transducer hole is for being communicated with pressure transducer; Described flow transducer hole is for being communicated with flow transducer.
Further, described blower fan comprises Blower Housing, impeller and motor; Described Blower Housing is provided with air inlet and fan outlet;
Described impeller is positioned at the inside of described Blower Housing, and near described air inlet;
The output shaft of described motor drives and connects described impeller, flows along described air inlet towards the direction of described fan outlet to make described gas;
The inside of described Blower Housing is gas flow space in shell for holding the space of gas; In described shell, the ratio range of the volume of gas flow space and the volume of described impeller is 15-30.
Further, described air inlet is arranged along the axis of described impeller; Described fan outlet is arranged along the radial direction of described impeller;
Described air inlet place is provided with conducting element, and described conducting element is fixedly connected with the outer surface of described Blower Housing; Described conducting element is along the axial helically wire of the output shaft of described motor.
Respirator provided by the invention, by blower fan cabin being set to inside and outside two-layer housing, i.e. the first housing and the second housing, and first is provided with damping device and/or is provided with damping device between the second housing and blower fan between housing and the second housing, to reduce vibrations and its noise produced of the blower fan of high speed rotating, thus reduce the noise of Use of respirator process generation, decrease respirator in use on the impact of patient.
Accompanying drawing explanation
In order to be illustrated more clearly in the specific embodiment of the invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in detailed description of the invention or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The front view of the respirator that Fig. 1 provides for the embodiment of the present invention one;
Fig. 2 is the sectional view of the respirator shown in Fig. 1;
The perspective view of the second housing of the respirator that Fig. 3 provides for the embodiment of the present invention two;
The front view of the second housing of the respirator that Fig. 4 provides for the embodiment of the present invention two;
Fig. 5 is the sectional view along A-A direction of the second housing shown in Fig. 4;
Fig. 6 is the sectional view along B-B direction of the second housing shown in Fig. 4;
Fig. 7 is the sectional view along C-C direction of the second housing shown in Fig. 4;
Fig. 8 is the sectional view along D-D direction of the second housing shown in Fig. 4;
Fig. 9 is the sectional view along E-E direction of the second housing shown in Fig. 4;
The front view of the blower fan of the respirator that Figure 10 provides for the embodiment of the present invention three;
The top view of the blower fan of the respirator that Figure 11 provides for the embodiment of the present invention three;
The front view of the blower fan upper shell of the blower fan of the respirator that Figure 12 provides for the embodiment of the present invention;
Figure 13 is the top view of the blower fan upper shell shown in Figure 12;
The front view of the blower fan lower house of the blower fan of the respirator that Figure 14 provides for the embodiment of the present invention;
Figure 15 is the top view of the blower fan lower house shown in Figure 14;
The front view of the impeller of the blower fan of the respirator that Figure 16 provides for the embodiment of the present invention;
Figure 17 is the top view of the impeller shown in Figure 16.
Reference numeral:
201-blower fan cabin; 202-blower fan; 203-first housing;
2031-first upper shell; 2032-first lower house;
204-second housing; 205-water tank; 206-input port;
207-delivery outlet; 208-defecator;
The outer cabin of 101-; 1011-outer cabin air inlet;
1012-outer cabin air outlet; The outer air channel, cabin of 1013-; 1014-diffusion chamber;
Cabin in 102-; 103-splitter; 104-wind deflector;
105-pressure transducer hole; 106-flow transducer hole;
1-Blower Housing; Gas flow space in 11-shell; 12-locating dowel;
13-protrudes rib in shockproof location; 14-blower fan upper shell; 141-groove;
15-blower fan lower house; 2-impeller; 21-chassis;
22-blade; 3-motor; 4-air inlet;
5-fan outlet; 6-conducting element 7-buckle.
Detailed description of the invention
Be clearly and completely described technical scheme of the present invention below in conjunction with accompanying drawing, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In describing the invention, it should be noted that, orientation or the position relationship of the instruction such as term " " center ", " on ", D score, "left", "right", " vertically ", " level ", " interior ", " outward " they be based on orientation shown in the drawings or position relationship; be only the present invention for convenience of description and simplified characterization; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.In addition, term " first ", " second ", " the 3rd " only for describing object, and can not be interpreted as instruction or hint relative importance.
In describing the invention, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition above-mentioned term concrete meaning in the present invention can be understood.
Embodiment one
Shown in Fig. 1, Fig. 2, present embodiments provide a kind of respirator; The front view of the respirator that Fig. 1 provides for the embodiment of the present invention, Fig. 2 is the sectional view of the respirator shown in Fig. 1, wherein, is shown in broken lines blower fan cabin in Fig. 1.
Shown in Fig. 1, Fig. 2, the respirator that the present embodiment provides, comprises blower fan cabin 201 and blower fan 202, and blower fan cabin 201 comprises the first housing 203 and the second housing 204, first housing 203 is coated at the second housing 204.
Blower fan 202 is positioned at the second housing 204, and is fixedly connected with the second housing 204.
Be provided with damping device (not shown) between first housing 203 and the second housing 204, and/or be provided with damping device between the second housing 204 and blower fan 202.Optionally, damping device is provided with between first housing 203 and the second housing 204, or, damping device is provided with between second housing 204 and blower fan 202, or, be provided with damping device between the first housing 203 and the second housing 204 and be provided with damping device between the second housing 204 and blower fan 202.
Respirator described in the present embodiment is by being set to inside and outside two-layer housing by blower fan cabin 201, i.e. the first housing 203 and the second housing 204, and first is provided with damping device and/or is provided with damping device between the second housing 204 and blower fan 202 between housing 203 and the second housing 204, to reduce vibrations and its noise produced of the blower fan 202 of high speed rotating, thus reduce the noise of Use of respirator process generation, decrease respirator in use on the impact of patient.
Wherein, damping device is damping cotton or damping rubber pad.Shaken to eliminate or to slow down blower fan 202 by damping cotton or damping rubber pad, thus reduce the noise of Use of respirator process generation.
Preferably, damping device is damping sound insulation filter pulp, and damping sound insulation filter pulp adopts electric wave shape, so that all right sound insulation while damping, reduce further the noise of blower fan 202.Preferably, between the first housing 203 and the second housing 204 and be provided with damping sound insulation filter pulp between the second housing 204 and blower fan 202.This damping sound insulation filter pulp can make respirator at integral pressure lower than 10cmH2O-20cmH2O, when flow is about 140L/min, makes noise reduce to 27DB by 30DB.
In the possibility of the present embodiment, the first housing 203 is comprised the first upper shell 2031 and the first lower house 2032, first upper shell 2031 and the first lower house 2032 and is fastened and connected by buckle.Adopt buckle-type connected mode that the first upper shell 2031 and the first lower house 2032 is installed, avoid and adopt screw to connect because stubborn screw is firmly too violent, to be ftractureed in junction, twist screw and kick the beam and cause poorly sealed; Also be convenient to installation when producing in batches, simplify mounting process, most of workman can be made to learn very soon and standard compliant product is installed out; The error that each side is occurred drops to extremely low; Thus make the damping devices such as the first housing 203, second housing 204, first housing 203 and the damping sound insulation filter pulp between the second housing 204 coordinate more excellent, and then reduce the vibratory sensation of respirator.
In the possibility of the present embodiment, described respirator also comprises water tank 205, and water tank 205 is fixedly connected with the first housing 203; Be installed with electrons heat plate (belonging to prior art, not shown) bottom water tank 205, electrons heat plate is used for the liquid in heating water tank 205, to promote the temperature of liquid.
Respirator comprises input port 206 and delivery outlet 207; Blower fan 202 flows along input port 206 towards the direction of delivery outlet 207 for ordering about gas.
The gas flow that blower fan 202 exports is through the liquid level top layer of water tank 205, flows in the direction towards delivery outlet 207; Liquid in water tank 205 is after the heating of electrons heat plate, liquid level top layer forms the steam with uniform temperature, after the gas that blower fan 202 exports and this steam exchange, can the temperature and humidity of lift gas, thus respirator is exported meet human body requirements, the gas with temperature and humidity, decrease the lower gas of drying, temperature to the sense of discomfort of patient.This liquid is generally water, also this liquid can be made as required to be other solution, with the sick Man's Demands of satisfied difference.
Respirator also comprises defecator 208, defecator 208 near input port 206, to filter the gas of input port 206; Defecator 208 comprises air filter film and/or fine filtration membrane.Preferably, defecator 208 comprises air filter film and fine filtration membrane, by above-mentioned filter design, so that the air filtration dust quantity of the machine that ensures respiration reaches 97%.
Embodiment two
Embodiment two provides a kind of respirator, this embodiment is another technical scheme after improving the second housing of respirator on the basis of embodiment one, the technical characteristic of the respirator disclosed in embodiment one is also applicable to this embodiment, the technical characteristic no longer repeated description of the published respirator of embodiment one.
Shown in Fig. 3-Fig. 9, the perspective view of the second housing that Fig. 3 provides for the embodiment of the present invention, the front view of the second housing that Fig. 4 provides for the embodiment of the present invention; In order to display structure clearly, Fig. 3, Fig. 4 illustrate only the primary structure of the second housing, and the upper cover of the second housing is not shown in the diagram; Fig. 5-Fig. 9 is the sectional view of the second housing shown in Fig. 4, and wherein, Fig. 5 is the sectional view along A-A direction, and Fig. 6 is the sectional view along B-B direction, and Fig. 7 is the sectional view along C-C direction, and Fig. 8 is the sectional view along D-D direction, and Fig. 9 is the sectional view along E-E direction; Wherein, outer cabin air outlet and diffusion chamber divide by Fig. 8, Fig. 9 dotted line.
Shown in Fig. 3-Fig. 9, the respirator that the present embodiment provides, is provided with outer cabin 101 and interior cabin 102 in the second housing, and it is inner that interior cabin 102 is positioned at outer cabin 101.
Be provided with outer cabin air inlet 1011 between outer cabin 101 and interior cabin 102, outer cabin 101 is also provided with outer cabin air outlet 1012.
Multiple splitter 103 is installed with in outer cabin 101; Multiple splitter 103 is near outer cabin air outlet 1012.
Multiple splitter 103 is arranged along the cross-wise direction interval that gas flows, and extends along gas flow direction.
Interior cabin 102 is for fixing blower fan, and blower fan is used for making gas in blower fan flow through multiple splitter 103 from outer cabin air inlet 1011, flows to outer cabin air outlet 1012.
Second housing described in the present embodiment is by arranging multiple splitter 103 near air outlet 1012 place, outer cabin, the gas flow channel residing for splitter 103 is divided into multiple passage, add the friction area of flowing gas, the central gas stream flow velocity significantly decreasing pure gas flow channel is very fast, near the problem that the air-flow velocity at gas flow channel edge is slower, output gas is distributed in gas flow channel more even, and then the flow velocity of the cross-wise direction making the gas flowing through splitter 103 flow along gas is more even, and then improve respirator to the degree of accuracy exporting the force value of gas and the detection of flow value.
Further, the splitter between adjacent splitter 103 is apart from equal; The length of splitter 103 and the ratio of splitter distance are greater than 10, this ratio further increases the uniformity of the flow velocity of the cross-wise direction that the gas that flows through splitter 103 flows along gas, to make respirator higher to the degree of accuracy exporting the force value of gas and the detection of flow value; Preferably, splitter is 1.5mm-2.5mm apart from scope, this splitter is apart from gas and splitter 103 can be made to reach optimum, the resistance that the distance avoiding on the one hand splitter distance is too little and increase by the air-flow of splitter 103, and then impact is to the degree of accuracy exporting the force value of gas and the detection of flow value, the distance that it also avoid splitter distance on the other hand can not be reached through the relatively uniform distribution output gas flow of splitter 103 too greatly, and then impact is to the degree of accuracy exporting the force value of gas and the detection of flow value.
Preferably, the length of splitter 103 and the ratio range of splitter distance are 10-20.To optimize, to improve the uniformity of the flow velocity of the cross-wise direction that the gas that flows through splitter 103 flows along gas further, to make respirator to the degree of accuracy exporting the force value of gas and the detection of flow value.
The quantity of splitter 103 can be such as two, three, four, six, eight etc.; In the possibility of the present embodiment, the quantity of splitter 103 is three, the gas flow channel residing for splitter 103 is divided into four passages.
In the possibility of the present embodiment, outer cabin 101 comprises air channel, outer cabin 1013, and the two ends in air channel, outer cabin 1013 arrange outer cabin air inlet 1011 and outer cabin air outlet 1012 respectively; Multiple splitter 103 is installed in air channel, outer cabin 1013, and also namely the air channel, outer cabin 1013 residing for splitter 103 is divided into multiple passage by splitter 103; Air channel, outer cabin 1013 helically wire, to make the discharge outer cabin air outlet 1012 of gas spiral, to make the outflow path of gas not have turning round of wide-angle, can not produce local eddy currents, meet the movement locus of gas, the noise produced when can reduce gas flowing.
Further, outer cabin air inlet 1011 is fixedly connected with the fan outlet of blower fan, such as, can be, outer cabin air inlet 1011 passes through connection tube fixed seal connection with the fan outlet of blower fan; The axis being axially perpendicular to outer cabin air inlet 1011 of outer cabin air outlet 1012; Inside, outer cabin 101 is provided with diffusion chamber 1014, air channel, outer cabin 1013 is communicated with by diffusion chamber 1014 with outer cabin air outlet 1012, namely gas flow flows out from fan outlet, air channel, outer cabin 1013 is flowed into by outer cabin air inlet 1011, flow through multiple splitter 103, flow into diffusion chamber 1014, flow out from outer cabin air outlet 1012; Along gas flow direction, the sectional area in diffusion chamber 1014 is greater than the sectional area in air channel, outer cabin 1013, and the sectional area in diffusion chamber 1014 is greater than the sectional area of outer cabin air outlet 1012.To be converted to the principle of potential energy according to kinetic energy, utilize the gas of the high speed rotating exported from outer cabin air inlet 1011, outbound course is changed when flowing through diffusion chamber 1014, because of gas and changing flow direction and cause deceleration in the diffusion chamber 1014, and the kinetic energy that the gas of high speed rotating has is converted to pressure energy by decelerating effect, thus offset or reduce the pressure loss of gas in output procedure.
When the gas of the high speed rotating exported from outer cabin air inlet 1011 flows into diffusion chamber 1014, flow section sudden enlargement, due to the inertia of fluid, suddenly can not expand on whole cross section along the shape in diffusion chamber 1014, but there is a process expanded gradually, thus produce a large amount of vortex recirculation in inside, diffusion chamber 1014, form whirlpool district, affect gas to discharge from outer cabin air outlet 1012, and then affect the respirator output pressure of gas and the stability of flow; In order to solve this problem, in the possibility of the present embodiment, in diffusion chamber 1014, be installed with wind deflector 104; Wind deflector 104 is near air outlet 1012 place, outer cabin, and along the tangential extension of outer cabin air outlet 1012, so that by wind deflector 104, and coordinate splitter 103, the air-flow of the gas of high speed rotating is divided into multiple region, and guiding gas discharges outer cabin air outlet 1012, reduces the scale in whirlpool district, and then reduce whirlpool district to the output pressure of gas and the stability of flow, thus improve the respirator output pressure of gas and the stability of flow.
Further, wind deflector 104 is parallel to splitter 103, so that better guiding gas discharges outer cabin air outlet 1012.
In the possibility of the present embodiment, outer cabin 101 is installed with pressure transducer hole 105 and flow transducer hole 106; Along gas flow direction, be respectively equipped with flow transducer hole 106 near the two ends of multiple splitter 103; Pressure transducer hole 105 is provided with between multiple splitter 103 and outer cabin air outlet 1012.After flow through bypass sheet 103, the flow velocity along the cross-wise direction of gas flowing is more even, thus improves pressure transducer and flow transducer respectively to the output pressure of gas and the degree of accuracy of flow detection; Preferably, pressure transducer hole 105 and flow transducer hole 106 are positioned at air channel, outer cabin 1013.
Pressure transducer hole 105 is for being communicated with pressure transducer; Flow transducer hole 106 is for being communicated with flow transducer.Flow transducer adopts the existing sensor with two measured holes, can greatly reduce because flow transducer hole 106 blocks the error caused, to make the gas flow values of detection more accurate; Preferably, flow transducer adopts passive device, so that the installation of flow transducer and operation.
Further, along the cross-wise direction of gas flowing, multiple splitter 103 is positioned at the length being shorter in length than the splitter 103 being positioned at both sides of middle splitter 103, so that flow through multiple splitter 103 passage gas can more can be good act on pressure transducer and flow transducer, and then improve its accuracy of detection; Preferably, along the cross-wise direction of gas flowing, multiple splitter 103 is symmetrical set, and pressure transducer hole 105 and flow transducer hole 106 lay respectively on this line of symmetry; Along gas flow direction, the two ends of splitter 103 are circular arc, to reduce the resistance of splitter 103 pairs of gases.
In the present embodiment, gas flows into respirator from the input port of respirator, through defecator, flows into outer cabin air inlet, flows through blower fan, then flow through multiple splitter, flow to described outer cabin air outlet, flow through water tank, flows out respirator from the delivery outlet of respirator.
Embodiment three
Embodiment three provides a kind of respirator, this embodiment is another technical scheme after improving the blower fan of respirator on the basis of embodiment one, embodiment two, the technical characteristic of embodiment one, respirator disclosed in embodiment two is also applicable to this embodiment, the technical characteristic no longer repeated description of embodiment one, the published respirator of embodiment two.
Shown in Figure 10-Figure 17, the front view of the blower fan that Figure 10 provides for the present embodiment, Figure 11 is the top view of blower fan; Figure 12 is the front view of upper shell, and Figure 13 is the top view of upper shell; Figure 14 is the front view of lower house, and Figure 15 is the top view of lower house; Figure 16 is the front view of impeller, and Figure 17 is the top view of impeller; In order to display structure clearly, Figure 10, Figure 16 are sectional view.
Shown in Figure 10-Figure 17, the blower fan that the present embodiment provides, comprises Blower Housing 1, impeller 2 and motor 3; Blower Housing 1 is provided with air inlet 4 and fan outlet 5.
Impeller 2 is positioned at the inside of Blower Housing 1, and near air inlet 4.
The output shaft of motor 3 drives and connects impeller 2, flows along air inlet 4 towards the direction of fan outlet 5 to make gas.
The inside of Blower Housing 1 is gas flow space 11 in shell for holding the space of gas; In shell, the ratio range of the volume of gas flow space 11 and the volume of impeller 2 is 15-30.
During 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 enter gas flow space 11 in shell from air inlet 4, then flows out from fan outlet 5; In conjunction with the high speed rotating speed of motor 3, be converted to the principle of potential energy according to kinetic energy, gas accelerated by the impeller 2 of high speed rotating, then slows down in gas flow space 11 in the shell of certain volume, change the flow direction, make kinetic energy convert potential energy to, this potential energy is pressure energy; Wherein, when in shell, the ratio range of the volume of gas flow space 11 and the volume of impeller 2 is 15-30, the pressure that gas during the work of this blower fan exports from fan outlet 5 and flow more stable, more meet the requirement of needed by human body, especially meet the demand of patient to medical apparatus and instruments such as respirators.
In shell, gas flow space 11 also has and carries out the effect of dispelling the heat to the motor 3 run up, and extends the service life of motor 3, makes 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 ratio range further increases the stability of pressure that described blower fan work seasonal epidemic pathogens body exports from fan outlet 5 and flow, has met the requirement of needed by human body further, has especially met the demand of patient to medical apparatus and instruments such as respirators.
Wherein, motor 3 adopts brushless electric machine, and preferably, motor 3 adopts brshless DC motor; The rotating speed of brushless electric machine is 6000rpm-20000rpm, so that the output shaft high-speed driving impeller 2 of motor 3 rotates, forms output pressure and the flow of the gas being applicable to needed by human body; Table one lists the corresponding numerical value between the output pressure of the rotating speed of part motor 3 and the fan outlet 5 of blower fan, output flow.
This blower motor of table one rotating speed and output pressure, output flow parameter
In the possibility of this enforcement, air inlet 4 is arranged along the axis of impeller 2; Fan outlet 5 is arranged along the radial direction of impeller 2; To be converted to the principle of potential energy according to kinetic energy, the impeller 2 of high speed rotating is utilized to be accelerated by gas, gas is from axially entering impeller 2, radial output is changed over when flowing through gas flow space 11 in impeller 2 and shell, because of in shell in gas flow space 11 gas and changing flow direction cause deceleration further, and kinetic energy is converted to pressure energy by decelerating effect further, be more convenient to be formed the pressure and flow that meet needed by human body.
In the possibility of this enforcement, air inlet 4 place is provided with conducting element 6, and conducting element 6 is fixedly connected with the outer surface of Blower Housing 1; Conducting element 6 is along the axial helically wire of the output shaft of motor 3.The conducting element 6 of zigzag shape can flow into air inlet 4 by guiding gas better, air inlet 4 is entered with what make gas spiral, turning round of wide-angle is not had to make the inflow path of gas, local eddy currents can not be produced, meet the movement locus of gas, the noise produced when can reduce gas flowing, can also increase and contact air inflow with impeller 2.
In the possibility of this enforcement, multiple blades 22 that impeller 2 comprises chassis 21 and is arranged on chassis 21; Multiple blade 22 is arranged in even, interval around the center on chassis 21; Be convenient to stability when improving impeller 2 high speed rotating, reduce the noise brought because impeller 2 rotates instability, also extend the service life of impeller 2.Preferably, blade 22 is ten; Preferably, blade 22 and chassis 21 are formed in one, and are convenient to the production and processing of impeller 2.
The height of blade 22 near the one end at the center on chassis 21 is greater than the height of the other end at the center away from chassis 21; So that gas to flow in shell in gas flow space 11 along blade 22.
Blade 22 is connected in rounding off with chassis 21; To reduce the frictional force between impeller 2 and gas, and then the noise produced when reducing gas flowing, and reduce gas in the surperficial unnecessary energy consumption produced of impeller 2.
In the possibility of this enforcement, the outer surface of Blower Housing 1 is installed with locating dowel 12 respectively 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, such as, can be 1,2,3,5 etc.; By arranging locating dowel 12 and shockproof location protrusion rib 13, better to locate, fix described blower fan, the vibrations produced when reducing blower fan work, thus reduction shakes the noise produced.
In the possibility of this enforcement, Blower Housing 1 comprises blower fan upper shell 14 and blower fan lower house 15, so that the assembling of blower fan; Air inlet 4 is positioned on blower fan lower house 15, and fan outlet 5 is positioned at the junction of blower fan upper shell 14 and blower fan lower house 15.
Blower fan upper shell 14 is evenly provided with multiple locating dowel 12, and blower fan lower house 15 is provided with shockproof location and protrudes rib 13; The bearing of trend that rib 13 is protruded in shockproof location is consistent with the axial direction of locating dowel 12.Shockproof location is protruded rib 13 and is arranged on fan lower house 15 with locating dowel 12 is corresponding respectively, makes location, fixing described blower fan more accurately, is convenient to the vibrations produced when reducing blower fan work.
In the possibility of this enforcement, blower fan upper shell 14 and blower fan lower house 15 are fastened and connected by buckle 7.Adopt buckle 7 formula connected mode to install blower fan lower house 15, avoid and adopt screw to connect because stubborn screw is firmly too violent, to be ftractureed in junction, twist screw and kick the beam and cause poorly sealed; Also be convenient to installation when producing in batches, simplify mounting process, most of workman can be made to learn very soon and standard compliant product is installed out; The error that each side is occurred drops to extremely low; Preferably, the quantity of buckle 7 is four, is evenly arranged on blower fan surrounding.
In the possibility of this enforcement, blower fan upper shell 14 is provided with the groove 141 adapted with motor 3, and motor 3 is fixedly mounted in groove 141; To reduce the volume of described blower fan, be convenient to blower fan volume miniaturization.
Shock absorber part (belonging to prior art, not shown) is provided with, the noise produced because of vibrations between motor 3 and Blower Housing 1 during to reduce work between motor 3 and groove 141.Described shock absorber part can be such as rubber blanket, silicagel pad, spring etc.
In the possibility of this enforcement, blower fan upper shell 14 is provided with seal groove (not shown) with the contact surface of blower fan lower house 15, and seal groove extends along contact surface; Sealing ring (belonging to prior art, not shown) is provided with in seal groove.Prevent the pressure in Blower Housing 1 from being revealed by the connecting sewing between fan lower house 15 by sealing ring, also namely prevent the gas in Blower Housing 1 from being revealed by the connecting sewing between fan lower house 15, ensured that described blower fan exports pressure and the flow of gas.The material of described sealing ring can be such as rubber, silica gel etc.
In the possibility of this enforcement, the material of Blower Housing 1 is PC plastics.The blower fan adopted in the market is 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, product highly transparent, is convenient to some faults, the problem that find blower fan; During flabellum problem as found that there is, or there is exception in flabellum or casing, can with eye observation, without overhaul.
In the possibility of this enforcement, the inner chamber of Blower Housing 1 is that the inner chamber of vertical cyclindrical shape or Blower Housing 1 is approximately vertical cyclindrical shape; Namely the inner chamber of blower fan upper shell 14 and blower fan lower house 15 is vertical cyclindrical shape, or the inner chamber of blower fan upper shell 14 and blower fan lower house 15 is all approximately vertical cyclindrical shape; Namely also the profile of gas flow space 11 is vertical cyclindrical shape or is approximately vertical cyclindrical shape in shell; So that under the prerequisite ensureing gas flow space 11 in certain shell, reduce the volume of blower fan; To reduce the resistance of gas gas flow space 11 in shell.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.