CN108980086A - Blower and ventilator with the blower - Google Patents
Blower and ventilator with the blower Download PDFInfo
- Publication number
- CN108980086A CN108980086A CN201811069732.0A CN201811069732A CN108980086A CN 108980086 A CN108980086 A CN 108980086A CN 201811069732 A CN201811069732 A CN 201811069732A CN 108980086 A CN108980086 A CN 108980086A
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- China
- Prior art keywords
- impeller
- shell
- air duct
- blade
- layer air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000003292 glue Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 4
- 229920006351 engineering plastic Polymers 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000007958 sleep Effects 0.000 description 4
- 230000007704 transition Effects 0.000 description 3
- 230000002045 lasting effect Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 206010041235 Snoring Diseases 0.000 description 1
- 206010067775 Upper airway obstruction Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000000981 epithelium Anatomy 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000010358 mechanical oscillation Effects 0.000 description 1
- 230000000414 obstructive effect Effects 0.000 description 1
- 208000001797 obstructive sleep apnea Diseases 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
- F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
- F04D29/4226—Fan casings
- F04D29/4233—Fan casings with volutes extending mainly in axial or radially inward direction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/667—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps by influencing the flow pattern, e.g. suppression of turbulence
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M16/00—Devices for influencing the respiratory system of patients by gas treatment, e.g. mouth-to-mouth respiration; Tracheal tubes
- A61M16/0057—Pumps therefor
- A61M16/0066—Blowers or centrifugal pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention provides a kind of blower and the ventilator with the blower, the blower includes: first shell, second shell, impeller and motor, the first shell and the second shell are fixedly connected to form vortex gas circuit, the vortex gas circuit includes the first air inlet, upper layer air duct, lower layer air duct and the first gas outlet, the impeller is located in the upper layer air duct, and first gas outlet is located at the lower layer air duct；The impeller includes upper cover, blade and lower cover, and the diameter of the lower cover is greater than the diameter of the upper cover, and the lower cover is provided with gap as the segmenting structure between the upper layer air duct and the lower layer air duct, the lower cover and the inner wall of the first shell；The high-speed flow exported from impeller enters upper layer air duct, lower layer air duct is flowed into along the inner wall of first shell, since the gap between the lower cover of blade and the inner wall of first shell is smaller, the high-speed flow fierceness collision avoided in upper layer air duct and lower layer air duct crosses, to reduce aerodynamic noise.
Description
Technical field
The present invention relates to medical instruments field more particularly to a kind of blower and with the ventilator of the blower.
Background technique
Positive Airway Pressure ventilator (Positive Airway Pressure, PAP) has been used as treatment obstructive sleep and has exhaled
Inhale the means of the generation of pause.Patient is connected to the positive pressure air provided by nasal mask or nose conduit.For the sky of patient respiratory
The pressure of gas source of supply is higher than atmospheric pressure.The study found that the application of Positive Airway Pressure, which provides, can describe as " air operated clamp "
Mechanism, support and stable epithelium healing, to eliminate the generation of Upper airway obstruction.The application of Positive Airway Pressure, which can be eliminated effectively, beats
Snore and obstructive sleep apnea.
Effect of the blower in Positive Airway Pressure ventilator is the gas for generating certain pressure and flow, is supplied to patient.It is logical
Motor impeller high speed rotation is crossed, generates the air-flow of certain flow in vortex gas circuit, while maintaining gas in volute air flue
Body is output to Positive Airway Pressure ventilator pipe network system in certain pressure limit, by scroll outlet water conservancy diversion.This process can generate
Biggish noise, noise swiftly flowing gas in high-speed rotating impeller (generating rotational noise), volute (generate
Aerodynamic noise), high-speed rotating motor (generate vibration noise).
Positive Airway Pressure ventilator mainly use the time be patient sleeps during, therefore to reduce noise have extra high want
It asks, especially the late into the night, on the one hand requires machine that cannot influence other people and normally sleep, on the other hand cannot influence sleeping for patient
It sleeps.
Air flue is much being not achieved just in the blower that can be used for Positive Airway Pressure ventilator of market at present, mute and vibration rank
Press the demand of Use of respirator scene.
Summary of the invention
In order to solve the technical problems existing in the prior art, the present invention provides a kind of blower and exhaling with the blower
Suction machine, it is intended to reduce the noise of blower in the process of running.
A kind of blower, comprising: first shell, second shell, impeller and motor,
The first shell and the second shell are fixedly connected to form vortex gas circuit, the vortex gas circuit include first into
Port, upper layer air duct, lower layer air duct and the first gas outlet, first air inlet are set to the top surface of the first shell, institute
It states impeller to be located in the upper layer air duct, first gas outlet is located at the lower layer air duct；
The impeller includes upper cover, blade and lower cover, and the blade is set between the upper cover and the lower cover, described
Upper cover is provided with the second air inlet, and the diameter of the lower cover is greater than the outside diameter of the upper cover, and the lower cover is as on described
The inner wall of segmenting structure between layer air duct and the lower layer air duct, the lower cover and the first shell is provided with gap；
The upper surface of the motor is provided with rotor main shaft, and the second shell is mounted on the side end face of the rotor main shaft
On, the impeller is fixed on the rotor main shaft.
In one embodiment, the diameter in the gap is 2~4mm.
In one embodiment, the diameter in the gap is 3.5mm.
In one embodiment, the lower cover with a thickness of 1~2mm.
In one embodiment, boss is provided in the second shell, the upper surface of the boss corresponds to described first
Blocking-up structure is provided at gas outlet.
In one embodiment, the cross-sectional shape of the blocking-up structure is sector.
In one embodiment, the lower cover of the impeller is provided with impeller pilot hole, the impeller pilot hole riveting
Axle sleeve, the impeller are fixed on the motor by the rotor main shaft of the motor and axle sleeve cooperation, the leaf
Wheel pilot hole is three-level stepped hole, and level-one is pre-determined bit hole, the pre-determined bit hole and the axle sleeve transition fit, and second level is riveting
Hole, the riveted holes and the axle sleeve are interference fitted, and three-level is excessive glue hole, the excessive glue hole and the axle sleeve clearance fit.
In one embodiment, the upper cover of the impeller is taper moulding.
In one embodiment, the material of the impeller is engineering plastics, and the blade and the upper cover are integrated, described
Blade is provided with skewed slot far from one end of second air inlet, corresponded on the lower lid be provided at the position of the skewed slot it is heavy
Platform is provided with soldered in the heavy platform, and the heavy platform of the skewed slot and the lower cover that pass through the blade, which cooperates, to be positioned
Pre-assembled, then impeller entirety is formed by skewed slot described in the welding seam welding and the heavy platform.
A kind of ventilator, including blower described in above-mentioned any one embodiment.
Blower provided by the invention, the lower cover of blade are the separation structure in upper layer air duct and lower layer air duct.From blade air flue
The gas with certain flow rate of output enters upper layer air duct, flows into lower layer air duct along the inner wall of first shell, due to
Gap between the lower cover of blade and the inner wall of first shell is smaller, avoids the high-speed flow in upper layer air duct and lower layer air duct
Fierceness, which is collided, to cross, to reduce aerodynamic noise.
Detailed description of the invention
Attached drawing is to further understand for providing to the embodiment of the present invention, and constitute part of specification, under
The specific embodiment in face is used to explain the present invention embodiment together, but does not constitute the limitation to the embodiment of the present invention.Attached
In figure:
Fig. 1 is the top view of the blower of one embodiment；
Fig. 2 is the cross-sectional view splitted in Fig. 1 along the direction AA；
Fig. 3 is the cross-sectional view splitted in Fig. 1 along the direction BB；
Fig. 4 is the structural schematic diagram of the decomposing state of the blower in Fig. 1；
Fig. 5 is the structural schematic diagram of the impeller of one embodiment；
Fig. 6 is the sectional view splitted in Fig. 5 along the direction CC；
Fig. 7 is the structural schematic diagram of the decomposing state of the impeller of one embodiment；
Fig. 8 is the schematic diagram of the impeller of one embodiment；
Fig. 9 is the sectional view splitted in Fig. 8 along the direction DD；
Figure 10 is the enlarged drawing of E in Fig. 9；
Figure 11 is the enlarged drawing of F in Fig. 9；
Description of symbols:
First shell 1,
Second shell 2, boss 201, blocking-up structure 2011, screw mounting hole 202,
Impeller 3, upper cover 301, blade 302, lower cover 303, the second air inlet 3011, blade air flue 3021, blade air flue enter
Mouthful 3021a, blade air passage outlet 3021b, skewed slot 3022, impeller pilot hole 3031 are pre-positioned hole 3031a, riveted holes 3031b,
Excessive glue hole 3031c, heavy platform 3032, soldered 30321,
Motor 4, rotor main shaft 401, screw hole 402,
It is vortexed gas circuit 5, the first air inlet 501, upper layer air duct 502, lower layer air duct 503, the first gas outlet 504, first goes out
Port top half 5041, the first gas outlet lower half portion 5042,
Axle sleeve 6.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As shown in Figure 1, Figure 2, shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, a kind of blower in one embodiment, comprising: first shell 1,
Two shells 2, impeller 3 and motor 4, first shell 1 and second shell 2 are fixedly connected to form vortex gas circuit 5, and vortex gas circuit 5 includes
First air inlet 501, upper layer air duct 502, lower layer air duct 503 and the first gas outlet 504, the first air inlet 501 are set to first
The top surface of shell 1, impeller 3 are located in upper layer air duct 502, and the first gas outlet 504 is located at lower layer air duct 503；Impeller 3 includes upper cover
301, blade 302 and lower cover 303, blade 302 are set between upper cover 301 and lower cover 303, and upper cover 301 is provided with the second air inlet
Mouth 3011, the diameter of lower cover 303 are greater than the outside diameter of upper cover 301, and lower cover 303 is used as upper layer air duct 502 and lower layer air duct 503
Between segmenting structure, the inner wall of lower cover 303 and first shell 1 is provided with gap；The upper surface of motor 4 is provided with rotor main shaft
401, second shell 2 is mounted on the side end face of rotor main shaft 401, and impeller 3 is fixed on rotor main shaft 401.
Specifically, blower includes first shell 1, second shell 2, impeller 3 and motor 4, first shell 1 and second shell 2
It is fixedly connected, for example mounting hole can be respectively set in first shell 1 and second shell 2, pass through mounting hole and screw fit
First shell is fixed on the second housing, and first shell 1 and the connection of second shell 2 form vortex gas circuit 5, and vortex gas circuit 5 is wrapped
The first air inlet 501, upper layer air duct 502, lower layer air duct 503 and the first gas outlet 504 are included, the first air inlet 501 is set to
The top surface of one shell 1, impeller 3 are located in upper layer air duct 502, and the first gas outlet 504 is located at lower layer air duct 503, the first gas outlet
504 after first shell 1 and the assembly of second shell 2 by forming, and the first gas outlet top half 5041 is located in first shell 1, the
One gas outlet lower half portion 5042 is located in second shell 2.
Impeller 3 includes upper cover 301, blade 302 and lower cover 303, and blade 302 is set between upper cover 301 and lower cover 303,
Upper cover 301 is provided with the second air inlet 3011, and the diameter of lower cover 303 is greater than the outside diameter of upper cover 301, and lower cover 303 is as upper
The inner wall of segmenting structure between layer air duct 502 and lower layer air duct 503, lower cover 303 and first shell 1 is provided with gap.Between being somebody's turn to do
The diameter of gap is 2~4mm, preferably 3.5mm.Lower cover 303 with a thickness of 1~2mm, preferably 1.5mm.Second air inlet 3011
Corresponding in the position of first shell 1 with the first air inlet 501 in the position of upper cover 301, gas enters from the first air inlet 501,
Enter impeller 3 by the second air inlet 3011.Blade 302 be arc-shaped, blade 302 along upper cover 301 circle distribution, further
Ground, blade 302 are distributed along the even circumferential of upper cover 301, and the quantity of blade 302 can according to need setting, set in the present embodiment
11 blades are set.Adjacent two panels blade 302, upper cover 301, lower cover 303 form blade air flue 3021,3021 liang of the blade air flue
End opens, and one end of nearly second air inlet 3011 is blade air flue entrance 3021a, and one end far from the second air inlet 3011 is leaf
Piece air passage outlet 3021b, circle distribution of the blade air flue 3021 along upper cover 301.When 4 impeller 3 of motor rotates, gas is from the
Two air inlets 3011 enter, and each blade air flue entrance 3021a are further separated into blade air flue entrance front end, in blade air flue
Accelerate in 3021, converges from blade air passage outlet 3021b discharge.
The upper surface of motor 4 is provided with rotor main shaft 401, and second shell 2 is mounted on the side end face of rotor main shaft 401,
Impeller 3 is fixed on rotor main shaft 401.Screw hole 402 is additionally provided on 4 upper surface of motor, second shell 2 is provided with screw peace
Hole 202 is filled, the screw mounting hole 202 of the screw hole 402 and second shell 2 that are connected by screw to motor 4 is fixed, screw mounting hole
202 are designed using countersunk head, and after guarantee is installed, the axle center of rotor main shaft 401 is aligned unbiased with the axle center of second shell 2
The heart.4 impeller of motor, 3 high speed rotation, the gas being vortexed in gas circuit 5 are flowed by first the 501 to the first gas outlet of air inlet 504
It is dynamic, the air-flow of certain pressure and flow is formed, ventilator pipe network system is output to by the first gas outlet 504.
Rotor main shaft 401 and 201 axle sleeve of centrifugal impeller shaft hole are interference fitted, and lower volute 3 is fixedly connected with motor 4
Afterwards, fixed main shaft bottom, then apply pressure in impeller upper surface, rotor main shaft 401 is interference fitted into centrifugal impeller and is turned
In 201 axle sleeve of axis hole.
4 high speed rotation impeller of motor, 3 high speed rotation, gas is flowed toward far from axis direction in blade air flue 3021,
Moment radially generates certain vacuum gradient in blade air flue 3021, and atmosphere flows into blade by the first air inlet 501 rapidly
Air flue entrance 3021a, by blade air flue entrance 3021a flow into blade air flue 3021 supplement vacuum, this process with impeller rotation
Turn, the persistent movement of gas in blade air flue 3021 and lasting progress, blade air passage outlet 3021b form lasting air-flow.By
In the isolation of the lower cover 303 of blade, the gas added in blade air flue 3021 can only be entered by the first air inlet 501, from
And the gas of blade air passage outlet 3021b is avoided to form air flow shortcircuit around blade air flue 3021 is moved back into, it can not export certain
The gas of pressure and flow.The lower cover 303 of blade is the separation structure in upper layer air duct 502 and lower layer air duct 503.From blade air flue
The gas with certain flow rate of 3021 outputs enters upper layer air duct 502, flows into lower layer's wind along the inner wall of first shell 1
Road 503 avoids upper layer air duct 502 under since the gap between the lower cover 303 of blade and the inner wall of first shell 1 is smaller
High-speed flow fierceness collision in layer air duct 503 crosses, to reduce aerodynamic noise.Simultaneously because the lower cover 303 of blade and
Gap a between the inner wall of one shell 1 is smaller, forms a vapour lock d between upper layer air duct 502 and lower layer air duct 503, works as leaf
When the gas flow that piece air flue 3021 exports exceeds certain value, gas forms a primary pressure p0, upper layer in upper layer air duct 502
A stable primary pressure p0 is maintained in air duct 502, can effectively maintain a stable aerodynamic conditions, avoids generating not true
Fixed vortex abnormal sound, so that eddy current crack be effectively reduced.It, under a certain pressure, can by adjusting the size in gap in the present invention
To adjust the vapour lock d and primary pressure p0 between upper layer air duct 502 and lower layer air duct 503, so that regulating gas is from upper layer air duct
The fluid state of 502 flow velocity regulating gas when entering lower layer air duct 503 by the lower cover 303 of blade, reaches control vortex
The purpose of aerodynamic noise in gas circuit.
In some embodiments, boss 201 is additionally provided in second shell, the upper surface corresponding first of the boss 201 goes out
Blocking-up structure 2011 is provided at port 504.Further, the cross-sectional shape of the blocking-up structure 2011 is sector.The blocking
The size of structure 2011 can be configured according to the size of the first gas outlet 504.The setting of the blocking-up structure 2011 can be kept away
Exempt from the gas in upper layer air duct 502 and be directly entered the first gas outlet 504, and be discharged by the first gas outlet 504, to keep upper layer
No pressure is poor in air duct 502, and flow velocity is uniform, further decreases the aerodynamic noise in vortex gas circuit 5；Meanwhile keeping impeller 3
Balance rotating weakens mechanical oscillation and rotational noise that impeller 3 is generated by unbalance rotation.
In the present invention, gas is in upper layer air duct 502 with certain flow velocity, by the lower cover 303 of impeller, into lower layer air duct
503, the component velocity for being parallel to 401 axle center of rotor main shaft of motor is generated, direction is vertical with the 303 place plane of lower cover of impeller,
Inner wall along second shell 2 is flowed toward motor drive direction, since the section in lower layer air duct 503 is " u "-shaped pattern, as shown in figure 3, its
Feature is that both ends are high point, and centre is minimum point, up flows return height along " u "-shaped inner wall when fraction flows through minimum point
Point, blocking-up structure 2011 are located at this high point, and the air-flow for having blocked this part to flow up is to from 3021 high velocity stream of blade air flue
The impact of air-flow out avoids thus bring aerodynamic noise.
As shown in Fig. 7, Fig. 8, Fig. 9 and Figure 10, in some embodiments, the lower cover 303 of impeller 3 is additionally provided with impeller assembly
Hole 3031, the impeller pilot hole 3031 rivet axle sleeve 6, and impeller 3 is fixed on by the rotor main shaft 401 of motor with the cooperation of axle sleeve 6
On motor 4, impeller pilot hole 3031 is three-level stepped hole, and level-one is pre-determined bit hole 3031a, the pre-determined bit hole 3031a and axle sleeve 6
Transition fit, second level are riveted holes 3031b, and riveted holes 3031b and axle sleeve 6 are interference fitted, and three-level is excessive glue hole 3031c, should
Excessive glue hole 3031c and 6 clearance fit of axle sleeve.
Specifically, pre-determined bit hole 3031a and 6 transition fit of axle sleeve, it is ensured that axle sleeve 6 and the coaxial assembly of impeller 3；Riveting
Hole 3031b and axle sleeve 6 are interference fitted, and 3031c axle sleeve 6 clearance fit in excessive glue hole is matched with accommodating riveted holes 3031b with 6 interference of axle sleeve
The glue that conjunction process is overflowed, in order to clear up without influencing assembly precision, to reduce vibration noise.
In some embodiments, the upper cover 301 of impeller is taper moulding, and the top of the upper cover 301 is small, the upper cover 301
Bottom end is big.Specifically, the upper cover 301 of impeller is taper moulding, and the top of the upper cover 301 is small, and the bottom end of the upper cover 301 is big, right
The height for the blade 302 answered gradually becomes smaller from front end to rear end, the upper cover 301 of impeller and be non-between the lower cover 303 of impeller
Equidistant structure.The element of cone of the upper cover 301 of impeller is one section of circular arc.The shape of blade 302 is circular shape.Such design
It can reduce the conducted noise of air-flow in impeller 3, and then reduce noise.
As shown in figures 9 and 11, in some embodiments, the material of impeller 3 is engineering plastics, blade 302 and upper cover 301
It is integrated, blade 302 is provided with skewed slot 3022 far from one end of the second air inlet 3011, and skewed slot 3022 is corresponded on lower cover 303
It is provided with heavy platform 3032 at position, is provided with soldered 30321 in the heavy platform 3032, passes through skewed slot 3022 and the lower cover of blade
The cooperation positioning pre-assembled of heavy platform 3032, then it is whole by the welding skewed slot 3022 of soldered 30321 and the formation impeller of heavy platform 3032.This
Sample can be filled to avoid impeller sets or secondary processing process in because of noise caused by error.
A kind of ventilator, including the blower in any of the above-described embodiment.Ventilator noise with the blower is small, increases
The applicability of ventilator.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
It must be directed to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be in office
What can be combined in any suitable manner in one or more embodiment or examples.In addition, those skilled in the art can say this
Different embodiments or examples described in bright book are engaged and are combined.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example
Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of blower characterized by comprising first shell, second shell, impeller and motor,
The first shell and the second shell are fixedly connected to form vortex gas circuit, and the vortex gas circuit includes the first air inlet
Mouth, upper layer air duct, lower layer air duct and the first gas outlet, first air inlet is set to the top surface of the first shell, described
Impeller is located in the upper layer air duct, and first gas outlet is located at the lower layer air duct；
The impeller includes upper cover, blade and lower cover, and the blade is set between the upper cover and the lower cover, the upper cover
It is provided with the second air inlet, the diameter of the lower cover is greater than the outside diameter of the upper cover, and the lower cover is as the upper layer wind
The inner wall of segmenting structure between road and the lower layer air duct, the lower cover and the first shell is provided with gap；
The upper surface of the motor is provided with rotor main shaft, and the second shell is mounted on the side end face of the rotor main shaft,
The impeller is fixed on the rotor main shaft.
2. blower according to claim 1, which is characterized in that the diameter in the gap is 2~4mm.
3. blower according to claim 2, which is characterized in that the diameter in the gap is 3.5mm.
4. blower according to claim 2, which is characterized in that the lower cover with a thickness of 1~2mm.
5. blower according to claim 1, which is characterized in that boss is provided in the second shell, the boss
Upper surface corresponds to and is provided with blocking-up structure at first gas outlet.
6. blower according to claim 5, which is characterized in that the cross-sectional shape of the blocking-up structure is sector.
7. blower according to claim 1, which is characterized in that the lower cover of the impeller is provided with impeller pilot hole,
The impeller pilot hole rivets axle sleeve, and the impeller is fixed on by the rotor main shaft of the motor with axle sleeve cooperation
On the motor, the impeller pilot hole is three-level stepped hole, and level-one is pre-determined bit hole, the pre-determined bit hole and the axle sleeve mistake
Cooperation is crossed, second level is riveted holes, and the riveted holes and the axle sleeve are interference fitted, and three-level is excessive glue hole, the excessive glue hole and institute
State axle sleeve clearance fit.
8. blower according to claim 7, which is characterized in that the upper cover of the impeller is taper moulding.
9. blower according to claim 8, which is characterized in that the material of the impeller be engineering plastics, the blade and
The upper cover is integrated, and the blade is provided with skewed slot far from one end of second air inlet, on the lower lid described in correspondence
Be provided with heavy platform at the position of skewed slot, be provided with soldered in the heavy platform, by the skewed slot of the blade and it is described under
The heavy platform cooperation positioning pre-assembled of lid, then it is whole by skewed slot described in the welding seam welding and heavy platform formation impeller
Body.
10. a kind of ventilator, which is characterized in that including blower as claimed in any one of claims 1 to 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811069732.0A CN108980086B (en) | 2018-09-13 | 2018-09-13 | Fan and breathing machine with same |
| PCT/CN2019/105152 WO2020052553A1 (en) | 2018-09-13 | 2019-09-10 | Fan and respirator having same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811069732.0A CN108980086B (en) | 2018-09-13 | 2018-09-13 | Fan and breathing machine with same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108980086A true CN108980086A (en) | 2018-12-11 |
| CN108980086B CN108980086B (en) | 2024-04-30 |
Family
ID=64546189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811069732.0A Active CN108980086B (en) | 2018-09-13 | 2018-09-13 | Fan and breathing machine with same |
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| CN (1) | CN108980086B (en) |
| WO (1) | WO2020052553A1 (en) |
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| WO2020052553A1 (en) * | 2018-09-13 | 2020-03-19 | 深圳融昕医疗科技有限公司 | Fan and respirator having same |
| CN111734655A (en) * | 2020-07-31 | 2020-10-02 | 宁波丰沃涡轮增压***有限公司 | Turbofan for breathing machine |
| CN112108640A (en) * | 2020-09-24 | 2020-12-22 | 河北煜剑节能技术有限公司 | Cover is collected to roast package waste heat |
| CN113018613A (en) * | 2019-12-24 | 2021-06-25 | 南京理工大学 | Impeller device for generating positive pressure gas and breathing machine |
| CN114776610A (en) * | 2022-04-14 | 2022-07-22 | 杭州贝丰科技有限公司 | Air supply device and portable breathing machine |
| CN115030908A (en) * | 2022-04-22 | 2022-09-09 | 杭州贝丰科技股份有限公司 | Low-noise turbofan |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2020052553A1 (en) | 2020-03-19 |
| CN108980086B (en) | 2024-04-30 |
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