CN217207024U - Motor fan cover of dust collector - Google Patents
Motor fan cover of dust collector Download PDFInfo
- Publication number
- CN217207024U CN217207024U CN202221205808.XU CN202221205808U CN217207024U CN 217207024 U CN217207024 U CN 217207024U CN 202221205808 U CN202221205808 U CN 202221205808U CN 217207024 U CN217207024 U CN 217207024U
- Authority
- CN
- China
- Prior art keywords
- air inlet
- fan blade
- centrifugal fan
- air
- wind
- 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.)
- Expired - Fee Related
Links
- 239000000428 dust Substances 0.000 title claims abstract description 23
- 238000007789 sealing Methods 0.000 claims abstract description 41
- 210000003205 muscle Anatomy 0.000 claims abstract description 16
- 230000000903 blocking effect Effects 0.000 claims abstract description 8
- 239000013013 elastic material Substances 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 230000002265 prevention Effects 0.000 description 3
- 238000010030 laminating Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 230000003434 inspiratory effect Effects 0.000 description 1
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Abstract
The utility model discloses a dust catcher motor fan housing, include the cover body with the inlet scoop grafting wind-guiding of centrifugal fan blade, the cover body includes integrated into one piece, the air inlet portion that sets up from bottom to top, keep off backward flow wind portion, the guide part, the air inlet portion is equipped with the fresh air inlet, the air inlet portion is rolled over to the enstrophe along the periphery of fresh air inlet and is extended and form annular air inlet ring, the airtight grafting of inlet scoop with the centrifugal fan blade of air inlet ring, be equipped with the annular seal muscle on the top face of keeping off backward flow wind portion, form the little clearance between the up end of annular seal muscle and the lower terminal surface of centrifugal fan blade, the upper end circumference that keeps off backward flow wind portion is the curved surface expanding and is connected with the lower extreme of guide part, the guide part encloses the air outlet outside of establishing at the centrifugal fan blade. The top end face of the wind shield for blocking the backflow wind part is provided with an annular sealing rib which is used for blocking air from flowing back to the front end of the centrifugal fan blade and the outer side of the air suction opening of the centrifugal fan blade, so that the vacuum degree of the front end of the centrifugal fan blade is improved, the wind break is reduced, and the air suction efficiency of a dust collector motor is improved.
Description
Technical Field
The utility model relates to a dust catcher motor field especially relates to a dust catcher motor fan housing.
Background
The motor of the dust collector is a core functional component of the dust collector, and the quality of the dust collector is directly determined by the performance of the motor of the dust collector. The core performance for a vacuum cleaner motor is mainly to achieve higher working efficiency and to reduce noise as much as possible, for a person skilled in the art. From the structural aspect, the motor of the dust collector mainly comprises a power device and an air suction device, wherein the power device comprises a shell and a motor arranged in the shell, the air suction device comprises a fan cover with an air inlet, a centrifugal fan blade arranged in the fan cover and an air guide ring coaxially arranged with the centrifugal fan blade, and an air channel communicated with the shell is arranged in the air guide ring. When the centrifugal fan blade rotates under the driving of the motor, air is sucked from the air inlet of the fan cover, is pressurized by the centrifugal fan blade, then enters the air channel of the air guide ring through the guide of the fan cover, and is discharged from the opening on the shell. Because the air outlet of centrifugal fan blade and the air intake of wind-guiding circle set up perpendicularly, the current fan housing guide part is the outside of parallel arrangement in the air outlet and extends to the air intake department of wind-guiding circle mostly, however in practical application, this applicant's discovery is that in the inspiratory air of centrifugal fan blade, except that the air intake that most flows into the wind-guiding circle, still can produce the opposite direction that part air flows toward the wind-guiding circle air intake to flow back to the front end of centrifugal fan blade and the outside of centrifugal fan blade inlet scoop, lead to the wind-force to break, and then cause the reduction of induced draft efficiency.
Disclosure of Invention
An object of the utility model is to foretell not enough, provide a dust catcher motor fan housing, this fan housing establishes the annular seal muscle on keeping off the top face of backward flow wind portion, utilizes the annular seal muscle to block the air reflux to the front end of centrifugal fan blade and the outside of centrifugal fan blade inlet scoop, improves the vacuum of the front end of centrifugal fan blade, reduces wind-force and breaks, improves the efficiency of induced drafting of dust catcher motor.
The technical scheme is as follows:
the utility model provides a dust catcher motor fan housing, includes the cover body with the inlet scoop grafting wind-guiding of centrifugal fan blade, the cover body includes integrated into one piece, the air inlet portion that sets up from bottom to top, keeps off backward flow wind portion, guide part, the air inlet portion is equipped with the fresh air inlet, the air inlet portion is rolled over to the enstrophe along the periphery of fresh air inlet and is extended and form annular air inlet ring, the airtight grafting of inlet scoop with centrifugal fan blade of air inlet ring, it is equipped with the annular seal muscle on the top face of backward flow wind portion to keep off, the up end of annular seal muscle with form the little clearance between the lower terminal surface of centrifugal fan blade, the width of little clearance is 0.1-0.15mm, the upper end circumference that keeps off backward flow wind portion be curved surface expanding with the lower extreme of guide part is connected, the guide part encloses the air outlet outside of establishing at centrifugal fan blade.
The upper end face of the annular sealing rib is parallel to the bottom end face of the centrifugal fan blade.
The section of the annular sealing rib is square.
The air inlet part comprises an air inlet outer side plate and an air inlet front end plate, the air inlet outer side plate is annular, the lower end of the air inlet outer side plate is connected with the outer side of the air inlet front end plate in a bending mode in the circumferential direction, and the air inlet hole is formed in the middle of the air inlet front end plate; an annular groove is formed between the inner side surface of the air inlet outer side plate and the outer side surface of the air inlet ring, and the lower end of an air suction opening of the centrifugal fan blade is inserted into the annular groove.
The centrifugal fan blade is characterized by further comprising a sealing ring, the height of the sealing ring is lower than that of the air inlet ring, the sealing ring is assembled in the annular groove in an interference mode, and the lower end of an air suction opening of the centrifugal fan blade is abutted to the sealing ring.
The sealing ring is made of elastic materials.
The upper end circumference of air inlet outer panel is curved surface expanding type with keep off the return air portion and be connected.
The cover body further comprises a connecting portion, a supporting surface used for supporting the air guide ring is arranged at the top end of the guide portion, the lower end of the connecting portion is circumferentially connected with the outer side of the supporting surface, and the connecting portion is arranged on the outer side of the air guide ring in an enclosing mode.
The upper end of connecting portion upwards extends to the interference circumference laminating is on motor housing's lateral surface.
It should be noted that:
in the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that the product of the present invention is usually placed when in use, or the orientation or positional relationship that a person skilled in the art conventionally understands, which is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the device or element that is referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
The direction indicated by the foregoing "inner" means a direction toward the center axis of rotation of the motor.
The direction indicated by the foregoing "outer" means a direction away from the center axis of rotation of the motor.
The direction indicated by the foregoing "front" is a direction toward "lower" as shown in the drawings.
The width of the small gap refers to the gap distance between the upper end face of the annular sealing rib and the lower end face of the centrifugal fan blade.
The advantages or principles of the invention are explained below:
1. the utility model provides a pair of dust collector motor fan housing, it includes the cover body of wind-guiding with the inlet scoop grafting of centrifugal fan blade, the cover body includes integrated into one piece, the air inlet portion that sets up from bottom to top, keeps off backward flow wind portion, guide part, sets up annular sealing muscle on the top face that keeps off backward flow wind portion, only leaves the minim clearance as narrow as possible between the up end of annular sealing muscle and the lower terminal surface of centrifugal fan blade to improve the vacuum of centrifugal fan blade front end, utilize annular sealing muscle to block the air backward flow to the front end of centrifugal fan blade and the outside of centrifugal fan blade inlet scoop, reduce wind-force and break, improve the induced draft efficiency of dust collector motor; the small gap is set to avoid the friction between the front end surface of the centrifugal fan blade and the wind shield backflow prevention part when the centrifugal fan blade rotates, the width of the small gap is 0.1-0.15mm, and the small gap which is as narrow as possible can improve the efficiency of preventing air backflow.
2. The utility model discloses an up end of annular seal muscle is parallel to each other with the bottom face of centrifugal fan blade, avoids the preceding terminal surface of centrifugal fan blade and the friction of fan housing fender backward flow wind portion, and is preferred, and the section of annular seal muscle is squarely, has improved the booth clearance length of annular seal muscle top face, improves the efficiency that blocks the air reflux.
3. The utility model discloses an air inlet portion includes air inlet outer panel, air inlet front end plate, forms annular groove between the medial surface of air inlet outer panel and the lateral surface of air inlet ring, and the inlet scoop lower extreme of centrifugal fan blade injects annular groove, has improved the induced draft efficiency of the inlet scoop of centrifugal fan blade, has guaranteed that the air that flows into from the air intake is whole in inhaling centrifugal fan blade from the inlet scoop.
4. In another embodiment, the cover body of the utility model is also internally provided with a sealing ring, the sealing ring is assembled in the annular groove in an interference manner, and the sealing ring fills the gap between the annular groove and the edge of the lower end of the air suction opening of the centrifugal fan blade, so that the air entering from the air suction opening is prevented from flowing into the annular groove, the vacuum degree of the front end of the centrifugal fan blade can be improved, and the wind break is reduced; preferably, the sealing ring is made of an elastic material.
5. Further, the utility model discloses a cover body still includes connecting portion, and connecting portion enclose and establish in the outside of wind-guiding circle for the wind homoenergetic that comes out through the air outlet of centrifugal fan blade enters into the wind-guiding circle through the inner wall of guide part.
6. Further, the utility model discloses an upper end of connecting portion upwards extends to the laminating of interference circumference has realized the airtight connection of the cover body with motor housing on motor housing's lateral surface, and then has realized power device and getter device's zonulae occludens in the dust catcher motor.
Drawings
Fig. 1 is a schematic perspective view of a motor fan cover of a vacuum cleaner according to an embodiment of the present invention.
Fig. 2 is a sectional view of a motor fan cover of a vacuum cleaner according to an embodiment of the present invention.
Fig. 3 is a sectional view of a motor of a vacuum cleaner according to an embodiment of the present invention.
Description of reference numerals:
10. the air inlet structure comprises an air inlet part, 11, an air inlet hole, 12, an air inlet ring, 13, an air inlet outer side plate, 14, an air inlet front end plate, 15, an annular groove, 20, a backflow blocking part, 21, an annular sealing rib, 30, a guide part, 40, a connecting part, 50, a centrifugal fan blade, 51, an air suction opening, 60, a small gap, 70, a sealing ring, 80, an air guide ring, 90 and a motor shell.
Detailed Description
The following describes embodiments of the present invention in detail.
Example 1:
referring to fig. 1 to 3, the utility model provides a pair of dust collector motor fan housing, include the cover body of grafting wind-guiding with inlet scoop 51 of centrifugal fan blade 50, the cover body includes integrated into one piece, the air inlet portion 10 that sets up from bottom to top, keep off backward flow wind portion 20, guide part 30, air inlet portion 10 is equipped with inlet opening 11, air inlet portion 10 turns over the extension inwards along around inlet opening 11 and forms annular air inlet ring 12, air inlet ring 12 and centrifugal fan blade 50's inlet scoop 51 airtight grafting, be equipped with annular sealing muscle 21 on keeping off backward flow wind portion 20's the top face, form little clearance 60 between the up end of annular sealing muscle 21 and the lower terminal surface of centrifugal fan blade 50, the width of little clearance 60 is 0.1-0.15mm, the upper end circumference that keeps off backward flow wind portion 20 is the curved surface expansion formula and is connected with the lower extreme of guide part 30, guide part 30 encloses the air outlet outside of establishing at centrifugal fan blade 50.
The top end face of the backflow blocking part 20 is provided with an annular sealing rib 21, only a small gap 60 which is as narrow as possible is reserved between the upper end face of the annular sealing rib 21 and the lower end face of the centrifugal fan blade 50 so as to improve the vacuum degree of the front end of the centrifugal fan blade 50, the annular sealing rib 21 is used for blocking air from flowing back to the front end of the centrifugal fan blade 50 and the outer side of an air suction opening 51 of the centrifugal fan blade 50, wind break is reduced, and the air suction efficiency of a dust collector motor is improved; the small gap 60 is provided to avoid the friction between the front end surface of the centrifugal fan blade 50 and the wind shield backflow prevention part 20 when the centrifugal fan blade 50 rotates, the width of the small gap 60 is 0.1-0.15mm, and the small gap 60 which is as narrow as possible can improve the efficiency of blocking the backflow of air.
Wherein, the upper end face of the annular sealing rib 21 is parallel to the bottom end face of the centrifugal fan blade 50. The friction between the front end face of the centrifugal fan blade 50 and the wind shield backflow prevention part 20 is avoided, preferably, the section of the annular sealing rib 21 is square, the length of the small gap 60 of the top end face of the annular sealing rib 21 is increased, and the efficiency of preventing air backflow is improved.
The air inlet part 10 comprises an air inlet outer side plate 13 and an air inlet front end plate 14, the air inlet outer side plate 13 is annular, the lower end of the air inlet outer side plate 13 is connected with the outer side of the air inlet front end plate in a bending mode in the circumferential direction, and the air inlet hole 11 is formed in the middle of the air inlet front end plate 14; an annular groove 15 is formed between the inner side surface of the air inlet outer side plate 13 and the outer side surface of the air inlet ring 12, and the lower end of an air suction opening 51 of the centrifugal fan blade 50 is inserted into the annular groove 15. The air suction efficiency of the air suction opening 51 of the centrifugal fan blade 50 is improved, and the air flowing in from the air inlet is ensured to be sucked into the centrifugal fan blade 50 from the air suction opening 51.
The upper end of the air inlet outer plate 13 is connected with the backflow blocking air part 20 in a circumferential curved surface expanding manner.
The cover body further comprises a connecting portion 40, a supporting surface used for supporting the air guide ring 80 is arranged at the top end of the guide portion 30, the lower end of the connecting portion 40 is circumferentially connected with the outer side of the supporting surface, and the connecting portion 40 is arranged on the outer side of the air guide ring 80 in a surrounding mode, so that air coming out of an air outlet of the centrifugal fan blades 50 can enter the air guide ring 80 through the inner wall of the guide portion 30.
The upper end of the connecting portion 40 extends upward and is fitted onto the outer side surface of the motor housing 90 in the circumferential direction with interference. The cover body is hermetically connected with the motor shell 90, and the power device in the motor of the dust collector is tightly connected with the air suction device.
Example 2:
the utility model discloses a dust catcher motor fan housing still includes sealing ring 70, and sealing ring 70 highly is less than the height of air inlet ring 12, and sealing ring 70 interference fit is in annular groove 15, and centrifugal fan blade 50's inlet scoop 51 lower extreme butt is on sealing ring 70. In embodiment 2 of the present invention, the sealing ring 70 is arranged in the cover body of embodiment 1, the sealing ring 70 is assembled in the annular groove 15 in an interference manner, and the sealing ring 70 fills the gap between the annular groove 15 and the lower end edge of the air suction opening 51 of the centrifugal fan blade 50, so that the air entering from the air suction opening 51 is prevented from flowing into the annular groove 15, and in addition, the vacuum degree of the front end of the centrifugal fan blade 50 can be improved, and the wind break and damage can be reduced; preferably, the sealing ring 70 is made of an elastic material.
The above are only specific embodiments of the present invention, and the protection scope of the present invention is not limited thereby; any replacement and improvement made on the basis of not violating the conception of the utility model belong to the protection scope of the utility model.
Claims (9)
1. The utility model provides a dust catcher motor fan housing, its characterized in that includes the cover body with the inlet scoop grafting wind-guiding of centrifugal fan blade, the cover body includes integrated into one piece, keeps off backward flow wind portion, guide part that sets up from bottom to top, the air inlet portion is equipped with the fresh air inlet, the air inlet portion is rolled over to extend along the interior around the fresh air inlet and is formed annular air inlet ring, the airtight grafting of inlet scoop with centrifugal fan blade of air inlet ring, it is equipped with the annular seal muscle on the top face of backward flow wind portion to keep off, the up end of annular seal muscle with form the little clearance between the lower terminal surface of centrifugal fan blade, the width of little clearance is 0.1-0.15mm, the upper end circumference that keeps off backward flow wind portion be curved surface expanding with the lower extreme of guide part is connected, the guide part encloses the air outlet outside of establishing at centrifugal fan blade.
2. The motor fan housing of claim 1, wherein the upper end surface of the annular sealing rib is parallel to the bottom end surface of the centrifugal fan blade.
3. The motor fan housing of claim 2, wherein the annular sealing rib has a square cross-section.
4. The motor fan housing of claim 1, wherein the air inlet portion comprises an air inlet outer plate and an air inlet front end plate, the air inlet outer plate is annular, the lower end of the air inlet outer plate is connected with the outer side of the air inlet front end plate in a bending manner in the circumferential direction, and the air inlet hole is formed in the middle of the air inlet front end plate; an annular groove is formed between the inner side surface of the air inlet outer side plate and the outer side surface of the air inlet ring, and the lower end of an air suction opening of the centrifugal fan blade is inserted into the annular groove.
5. The motor fan housing of the dust collector as claimed in claim 4, further comprising a sealing ring, wherein the height of the sealing ring is lower than that of the air inlet ring, the sealing ring is assembled in the annular groove in an interference manner, and the lower end of the air inlet of the centrifugal fan blade abuts against the sealing ring.
6. The motor fan housing of claim 5, wherein the sealing ring is made of an elastic material.
7. The motor fan housing of claim 4, wherein the upper end of the outer air inlet plate is connected to the return air blocking portion in a circumferentially expanding manner.
8. The motor fan housing of any one of claims 1 to 7, wherein the housing further comprises a connecting portion, a supporting surface for supporting the wind guide ring is arranged at the top end of the guiding portion, the lower end of the connecting portion is circumferentially connected with the outer side of the supporting surface, and the connecting portion is arranged around the outer side of the wind guide ring.
9. The motor fan housing of the vacuum cleaner as claimed in claim 8, wherein the upper end of the connecting portion extends upward and is fitted to the outer side surface of the motor casing in a circumferential direction with interference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221205808.XU CN217207024U (en) | 2022-05-18 | 2022-05-18 | Motor fan cover of dust collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221205808.XU CN217207024U (en) | 2022-05-18 | 2022-05-18 | Motor fan cover of dust collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217207024U true CN217207024U (en) | 2022-08-16 |
Family
ID=82780312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221205808.XU Expired - Fee Related CN217207024U (en) | 2022-05-18 | 2022-05-18 | Motor fan cover of dust collector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217207024U (en) |
-
2022
- 2022-05-18 CN CN202221205808.XU patent/CN217207024U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220816 |