CN210738917U - Impeller, fan and breathing machine - Google Patents
Impeller, fan and breathing machine Download PDFInfo
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- CN210738917U CN210738917U CN201921596736.4U CN201921596736U CN210738917U CN 210738917 U CN210738917 U CN 210738917U CN 201921596736 U CN201921596736 U CN 201921596736U CN 210738917 U CN210738917 U CN 210738917U
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Abstract
The utility model discloses an impeller for breathing machine, the impeller includes the impeller base member of bowl form to and set up integrated into one piece's impeller blade on the impeller base member, impeller base member center is equipped with the pilot hole, impeller blade equidistant arranging, impeller blade is including following in proper order the impeller center arrives front end, middle-end and the rear end at impeller edge, impeller blade height reduces from front end, middle-end to rear end gradually, impeller blade reduces from middle-end to rear end thickness gradually. The thickness of the impeller blade is gradually reduced from the middle end to the rear end, so that the eddy of the adjacent impeller blade at the air outlet is effectively reduced, and the wind noise is reduced; on the other hand, the upper surface of impeller base member is the cambered surface, reduces the air current and collides, improves the pressure boost efficiency, in addition, the utility model discloses an impeller does not have the impeller upper cover among the prior art, has alleviateed the impeller quality, improves the acceleration performance of fan and the treatment of breathing machine.
Description
Technical Field
The utility model relates to the technical field of medical equipment, concretely relates to impeller, fan that has this impeller and have breathing machine of this fan.
Background
The respirator is a device which can replace, control or change the normal physiological respiration of a person, increase the ventilation of the lung, improve the respiratory function, reduce the consumption of the respiratory function and save the heart reserve capacity. The sleep ventilator (or called noninvasive ventilator) continuously provides oxygen for the patient through a given pressure, so as to improve the oxygen deficiency problem of the patient during sleep. The sleep breathing machine is mainly used for treating sleep apnea syndrome, namely severe snoring and accompanied breath holding symptoms, and can also be used for treating complications of the sleep apnea syndrome, improving the blood oxygen concentration of a user in sleep at night, treating hypoxemia and the like.
The fan is the core spare part of breathing machine, the performance of fan is closely related with the breathing machine treatment effect, the performance of breathing machine has been decided to good or bad, and the design of impeller, the overall arrangement etc. has very big influence the performance of fan, current impeller mainly includes impeller upper cover, impeller lower cover and installs a plurality of impeller blade between impeller upper cover and impeller lower cover, be equipped with the air intake in the middle of the impeller upper cover, adjacent impeller blade and impeller upper cover, form the wind channel between the impeller lower cover, impeller blade and impeller upper cover, the outward flange of impeller lower cover forms the air outlet, be equipped with motor shaft and motor coaxial rotation on the impeller lower cover, rotate at high speed under the drive of unit, thereby produce the air current of high pressure and high velocity of flow.
The problems in the prior art mainly lie in that: the impeller rotates at a high speed, and after gas between adjacent blades is centrifugally accelerated, small eddy is formed at an air outlet of the impeller blade to generate pneumatic noise; the direction of the air inlet and the air outlet of the impeller is vertical, so that collision is formed, the supercharging efficiency is reduced, and the local pressure is uneven; the impeller has heavier mass, reduces the acceleration performance of the fan and influences the treatment effect of the breathing machine.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model provides an impeller reduces thereby the vortex and reduces wind and make an uproar, thereby reduces to collide and improve the pressure boost efficiency, thereby alleviates the impeller quality and improves acceleration performance.
In order to achieve the purpose, the utility model discloses an impeller for breathing machine, the impeller includes the impeller base member of bowl form to and set up integrated into one piece's impeller blade on the impeller base member, impeller base member center is equipped with the pilot hole, impeller blade equidistant arranging, impeller blade includes in proper order from the impeller center to front end, middle-end and the rear end at impeller edge, impeller blade height reduces from front end, middle-end to rear end gradually, impeller blade reduces from middle-end to rear end thickness gradually.
Preferably, the impeller blades gradually increase in thickness from the front end to the middle end.
Preferably, the upper surface of the impeller base body is a curved surface, and the height gradually decreases from the impeller center to the impeller edge.
Preferably, the upper surface of the impeller base body is a plane.
Preferably, the impeller blades are arranged perpendicular to the upper surface of the impeller base body.
Preferably, the front end edge of the impeller blade is disposed at an acute angle to the center line of the fitting hole.
Preferably, the impeller blades are forward, radial or backward-facing impellers.
Preferably, the impeller is made of an engineering plastic.
According to another aspect of the present invention, a blower is further provided, the blower includes a volute upper cover and a volute lower cover, the volute upper cover and the volute lower cover form a cavity, an air inlet is arranged at the top of the volute upper cover, and air outlets are arranged on the sides of the volute upper cover and the volute lower cover; an impeller as in any above, the impeller being located within the cavity; and the extension shaft of the motor is coaxially connected with the impeller assembling hole.
According to another aspect of the present invention, there is provided a ventilator, comprising any one of the fans described above.
The beneficial effects of the utility model are embodied in: the thickness of the impeller blade is gradually reduced from the middle end to the rear end, so that the eddy of the adjacent impeller blade at the air outlet is effectively reduced, and the wind noise is reduced; on the other hand, the upper surface of impeller base member is the cambered surface, reduces the air current and collides, improves the pressure boost efficiency, in addition, the utility model discloses an impeller does not have the impeller upper cover among the prior art, has alleviateed the impeller quality, improves the acceleration performance of fan and the treatment of breathing machine.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below.
Fig. 1 is a perspective view of an impeller according to a first embodiment of the present invention.
Fig. 2 is a sectional view of a first embodiment impeller of the present invention.
Fig. 3 is a plan view of a first embodiment impeller of the present invention.
Fig. 4 is a plan view of a second embodiment impeller of the present invention.
Fig. 5 is a plan view of a third embodiment impeller of the present invention.
Fig. 6 is a sectional view of a fourth embodiment impeller of the present invention.
Fig. 7 is a sectional view of an impeller according to a fifth embodiment of the present invention.
Fig. 8 is a sectional view of a sixth embodiment impeller of the present invention.
Fig. 9 is a schematic structural view of a blower according to a seventh embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.
First embodiment
As shown in fig. 1-2, the utility model discloses an impeller includes: the impeller base member 11 of bowl form to and set up a plurality of impeller blade 13 of integrated into one piece on impeller base member 11, impeller base member center is equipped with pilot hole 12, impeller blade 13 is equidistant to be arranged, impeller blade 13 includes in proper order from the impeller center to the front end 131, middle-end 132 and the rear end 133 at impeller edge, impeller blade 13 is from front end 131, middle-end 132 to rear end 133 height reduce gradually, impeller blade 13 reduces gradually from middle-end 132 to rear end 133 thickness.
In the present embodiment, the impeller 1 comprises an impeller base 11 and impeller blades 13, and there is no impeller upper cover above the impeller blades, but the air channel is formed between the adjacent impeller blades 13, the surface of the impeller base body 11 and the inner surface of the blower volute casing upper cover, the impeller of the utility model reduces the impeller upper cover so as to lighten the whole mass of the impeller, which can be easily understood according to Newton mechanics knowledge, under the same motor acting force, the smaller the mass of the impeller, the larger the obtained acceleration, and the larger the acceleration, the shorter the time for reaching the same rotating speed, in the treatment process of the respirator, man-machine synchronization is an important reference standard for determining the comfort degree, the suction pressure rise time of breathing machine is shorter more, and man-machine synchronism can just be better, consequently the utility model discloses an impeller has better acceleration performance, higher pressure boost efficiency to also give the utility model discloses a breathing machine brings better travelling comfort.
Further, in the present embodiment, the thickness of the impeller blade 13 gradually decreases from the middle end 132 to the rear end 133, after the impeller rotates with acceleration, the airflow enters from the air inlet in the middle of the impeller 1 and joins again after passing through the air passages between adjacent impeller blades 13, the smaller the thickness of the rear end 133 of the impeller blade, the more difficult the junction forms a vortex, conversely, the thickness of the existing impeller blade does not change, the vortex is easily formed at the junction, which causes vibration and increases wind noise, and in addition, the rear end 133 of the impeller blade becomes thinner, which further lightens the mass of the impeller, so that the impeller has better acceleration performance and higher supercharging efficiency.
Further, in this embodiment, the thickness of the impeller blade 13 gradually increases from the front end 131 to the middle end 132, so that the impact of the airflow on the impeller blade at the air inlet can be reduced, the vibration and the pressure loss of the impeller can be reduced, the noise can be reduced, and the supercharging efficiency can be improved.
Further, in this embodiment, the upper surface of the impeller base 11 is an arc surface, the height of the impeller base is gradually reduced from the center of the impeller to the edge of the impeller, the air inlet 4 is perpendicular to the air outlet 5, and the arc surface of the upper surface of the impeller base 11 is in smooth transition, so that direct impact of airflow on the impeller is reduced, vibration of the impeller and instability of pressure are reduced, airflow loss is reduced, and conversion efficiency and supercharging effect are improved.
Further, the number of the impeller blades 13 is 8-32, the number of the impeller blades is too small to reduce the supercharging efficiency, and the number of the impeller blades is too large to increase the processing difficulty and the manufacturing cost, in this embodiment, the number of the impeller blades is 12, of course, in other embodiments, the number of the impeller blades may be other numbers that can be easily thought by those skilled in the art, and the present invention also belongs to the protection scope of the present invention.
Further, in this embodiment, the front end edge of the impeller blade 13 and the central line of the assembling hole 12 are arranged at an acute angle, which not only increases the air inlet area of the air inlet, but also reduces the overall mass of the impeller blade 13 and the direct impact of the air flow on the impeller, thereby improving the supercharging efficiency of the impeller.
As shown in fig. 3, the impeller blade is a forward impeller, i.e., a centrifugal impeller blade in which the blade outlet installation angle of the runner blade is greater than 90 °, and the forward-type impeller has a larger energy loss, a lower efficiency, and a higher generated pressure than the backward-type impeller.
In this embodiment, the impeller is made of engineering plastics, and engineering plastics can be used as engineering materials and plastics for replacing metal manufacturing machine parts and the like, and has excellent comprehensive properties, large rigidity, small creep, high mechanical strength and good heat resistance, for example, polycarbonate, polyamide (nylon), polyformaldehyde, polyphenylene oxide, polyester, polyphenylene sulfide, polyaryl ester and the like, which all belong to the protection scope of the present invention.
Second embodiment
As shown in fig. 4, unlike the first embodiment, in the present embodiment, the impeller blade is a backward-direction impeller, that is, a centrifugal impeller blade having a blade outlet installation angle of less than 90 ° to the impeller blade, and in the backward-direction blade impeller, the impact between air and the blade is small, the energy loss is small, the efficiency is high, the noise during operation is small, but the pressure of air obtained from the fan is low.
Third embodiment
As shown in fig. 5, different from the first embodiment, in this embodiment, the impeller blade is a radial impeller, that is, a centrifugal impeller blade in which a blade outlet installation angle of a runner blade is equal to 90 °, and the radial blade has advantages and disadvantages between a backward type and a forward type, and is characterized by a smooth flow passage, difficulty in dust accumulation, and high strength.
Fourth embodiment
As shown in fig. 6, unlike the first embodiment, in this embodiment, the height of the upper surface of the impeller base body 11 is substantially constant, so that the air intake area at the air intake is large, the air flow speed is high, and the supercharging effect is good, but the air passage area is large, the pressure is unstable, and the wind noise is large.
Fifth embodiment
As shown in fig. 7, unlike the fourth embodiment, in the present embodiment, the impeller blades 13 are flat radial impellers, and the upper surface of the impeller base 11 is also flat, but the height of the impeller blades 13 gradually decreases from the impeller tip, the impeller middle end, to the impeller rear end.
Sixth embodiment
As shown in fig. 8, in the present embodiment, the impeller blades are also flat-plate radial impellers, and unlike the fifth embodiment, the heights of the impeller blades 13 from the impeller front end, the impeller middle end to the impeller rear end are the same in the present embodiment.
Seventh embodiment
According to another aspect of the present invention, the present invention further provides a blower, the blower includes a volute upper cover 2 and a volute lower cover 3, the volute upper cover 2 and the volute lower cover 3 form a cavity, an air inlet 4 is arranged on the top of the volute upper cover, and an air outlet 5 is arranged on the side surface of the volute upper cover and the volute lower cover; the impeller 1, the impeller 1 is positioned in the cavity; and the motor 4 is positioned below the volute lower cover 3, and an extending shaft of the motor 4 is coaxially connected with the impeller assembling hole 12.
Eighth embodiment
According to another aspect of the present invention, the present invention also provides a ventilator, which includes any one of the above fans.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (10)
1. The impeller is characterized by comprising a bowl-shaped impeller base body and impeller blades which are arranged on the impeller base body in an integrated forming mode, wherein an assembly hole is formed in the center of the impeller base body, the impeller blades are arranged at equal intervals, the impeller blades comprise a front end, a middle end and a rear end, the front end, the middle end and the rear end are sequentially arranged from the center of the impeller to the edge of the impeller, the height of the impeller blades is gradually reduced from the front end to the rear end, and the thickness of the impeller blades is gradually reduced from the middle end to the rear end.
2. The impeller of claim 1, wherein the impeller blades progressively increase in thickness from the leading end to the mid-end.
3. The impeller of claim 2, wherein the upper surface of the impeller base is a curved surface and the height gradually decreases from the impeller center to the impeller edge.
4. An impeller according to claim 3, wherein the number of impeller blades is 8-32.
5. The impeller of claim 4, wherein said impeller blades are disposed perpendicular to an upper surface of said impeller base.
6. The impeller as claimed in claim 5, wherein the leading end edges of said impeller blades are disposed at an acute angle to the centerline of said mounting hole.
7. The impeller of claim 6, wherein the impeller blades are forward-facing impellers, radial impellers, or backward-facing impellers.
8. The impeller as claimed in claim 7, wherein the impeller is made of an engineering plastic.
9. The fan is characterized by comprising a volute upper cover and a volute lower cover, wherein the volute upper cover and the volute lower cover form a cavity, the top of the volute upper cover is provided with an air inlet, and the side surfaces of the volute upper cover and the volute lower cover are provided with air outlets; the impeller of any one of claims 1-8, located within the cavity; the motor is positioned below the volute lower cover, and an extending shaft of the motor is coaxially connected with the impeller assembling hole.
10. A ventilator characterized in that it comprises a blower as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921596736.4U CN210738917U (en) | 2019-09-24 | 2019-09-24 | Impeller, fan and breathing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921596736.4U CN210738917U (en) | 2019-09-24 | 2019-09-24 | Impeller, fan and breathing machine |
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| Publication Number | Publication Date |
|---|---|
| CN210738917U true CN210738917U (en) | 2020-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921596736.4U Active CN210738917U (en) | 2019-09-24 | 2019-09-24 | Impeller, fan and breathing machine |
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| CN (1) | CN210738917U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113700671A (en) * | 2021-09-13 | 2021-11-26 | 安徽环茨智能科技有限公司 | Ternary impeller blade structure for improving air intake |
-
2019
- 2019-09-24 CN CN201921596736.4U patent/CN210738917U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113700671A (en) * | 2021-09-13 | 2021-11-26 | 安徽环茨智能科技有限公司 | Ternary impeller blade structure for improving air intake |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Impeller, fan and ventilator Effective date of registration: 20210510 Granted publication date: 20200612 Pledgee: Guangzhou Caold financing Company limited by guarantee Pledgor: GUANGZHOU HYPNUS HEALTHCARE TECHNOLOGY Co.,Ltd. Registration number: Y2021980003421 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20220602 Granted publication date: 20200612 Pledgee: Guangzhou Caold financing Company limited by guarantee Pledgor: GUANGZHOU HYPNUS HEALTHCARE TECHNOLOGY CO.,LTD. Registration number: Y2021980003421 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Impeller, fan and ventilator Effective date of registration: 20220606 Granted publication date: 20200612 Pledgee: Guangzhou Caold financing Company limited by guarantee Pledgor: GUANGZHOU HYPNUS HEALTHCARE TECHNOLOGY CO.,LTD. Registration number: Y2022980007143 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230613 Granted publication date: 20200612 Pledgee: Guangzhou Caold financing Company limited by guarantee Pledgor: GUANGZHOU HYPNUS HEALTHCARE TECHNOLOGY CO.,LTD. Registration number: Y2022980007143 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Impeller, fan, and ventilator Effective date of registration: 20230615 Granted publication date: 20200612 Pledgee: Guangzhou Caold financing Company limited by guarantee Pledgor: GUANGZHOU HYPNUS HEALTHCARE TECHNOLOGY CO.,LTD. Registration number: Y2023980044135 |