CN111963480A - Frame structure of centrifugal fan - Google Patents
Frame structure of centrifugal fan Download PDFInfo
- Publication number
- CN111963480A CN111963480A CN202010905460.4A CN202010905460A CN111963480A CN 111963480 A CN111963480 A CN 111963480A CN 202010905460 A CN202010905460 A CN 202010905460A CN 111963480 A CN111963480 A CN 111963480A
- Authority
- CN
- China
- Prior art keywords
- air outlet
- cover body
- height
- frame structure
- centrifugal fan
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- 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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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
- 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
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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
- F04D29/40—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
- F04D29/4213—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps suction ports
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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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
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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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
- F04D29/5853—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps heat insulation or conduction
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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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/20—Cooling means
- G06F1/203—Cooling means for portable computers, e.g. for laptops
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Human Computer Interaction (AREA)
- General Physics & Mathematics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a frame structure of a centrifugal fan, comprising: a lower shell and a cover body; the lower shell is provided with a bottom and an outer wall part, the outer wall part is vertically and circularly arranged on the periphery of the bottom, and the outer wall part is provided with an air outlet; the cover body is provided with an upper side, a lower side and an air inlet, the air inlet penetrates through the upper side and the lower side of the cover body, the cover body and the lower shell are correspondingly covered to form a space, the air outlet is communicated with the air inlet through the space, a first distance height is arranged between the lower shell and the cover body in the space, a second distance height is arranged between the lower shell and the cover body and positioned at the air outlet, the second distance height is larger than the first distance height, the air outlet is prevented from being blocked by a radiating element (module) matched with the air outlet by increasing the height of the air outlet, and therefore flow field efficiency can be improved and noise can be reduced.
Description
Technical Field
The present invention relates to a frame structure of a centrifugal fan, and more particularly, to a frame structure of a centrifugal fan capable of improving noise of the fan and enhancing structural strength of a fan casing.
Background
The internal space of the traditional notebook computer is narrow, and the heat source is arranged at the center to easily generate heat accumulation, so that a common manufacturer guides heat to the side air outlet by arranging the heat pipe, and then the heat guided by the heat pipe is taken away from the internal space by the fan to achieve the purpose of cooling.
The existing notebook computer cooling fan module has the advantages that the distance between the heat pipe and the C/D piece of the notebook computer casing is only 0.8-0.9 mm, the surface temperature of the notebook computer is overhigh due to heat radiation to the C/D piece, and the use experience of consumers is poor, the original fan structure design is that the height of the upper cover (or the bottom plate) of the fan casing is almost the same as that of the heat pipe, the help for reducing the surface temperature of the notebook computer is limited, the height of the airflow boundary is completely the same as that of the heat pipe, resistance exists at the air outlet of the fan, and noise problems are caused (the position of the fan is usually at the left side and the right side and is close to the operation areas of two hands and two legs), so a user easily feels that the surface temperature of the electricity is overhigh, the high heat generated at the air outlet also causes the heat generation at the bottom of the notebook computer, discomfort is generated when the user touches, and because the heat pipe, the cooling (heat conduction) elements or The air outlet of the fan is not only capable of causing the air outlet or flow field efficiency of the fan, but also prone to generate noise and poor heat dissipation effect, so how to improve the existing defects is the first goal of the present disclosure.
Disclosure of Invention
Accordingly, the present invention is directed to a fan housing that increases the height of an air outlet of the fan housing, thereby increasing the flow guiding effect of the fan and preventing the air flow at the air outlet from striking a heat conduction element.
To achieve the above object, the present invention provides a centrifugal fan frame structure, comprising:
the lower shell is provided with a bottom and an outer wall part, the outer wall part is vertically and circularly arranged on the periphery of the bottom, and the outer wall part is provided with an air outlet;
the cover body is provided with an upper side, a lower side and an air inlet, the air inlet penetrates through the upper side and the lower side of the cover body, the cover body and the lower shell are correspondingly covered to form a space, the air outlet is communicated with the air inlet through the space, a first distance height is formed between the lower shell and the cover body in the space, a second distance height is formed between the lower shell and the cover body and is positioned at the air outlet, and the second distance height is larger than the first distance height.
The centrifugal fan frame structure, wherein: the lower shell is vertically provided with a shaft cylinder, a stator is sleeved outside the shaft cylinder, a bearing is contained inside the shaft cylinder, a rotor group is provided with an axis and a fan wheel hub, the axis is vertically connected with the fan wheel hub, the rotor is pivoted with the bearing through the axis, and a plurality of blades extend outside the fan wheel hub.
The centrifugal fan frame structure, wherein: the reinforced rib part on the cover body is formed by stamping, and the reinforced rib part is formed by the lower side of the cover body protruding to the upper side, and the height of the air outlet is enlarged to form the second distance height.
The centrifugal fan frame structure, wherein: the reinforced rib of the lower shell is formed by stamping, and the reinforced rib is formed by the bottom of the lower shell protruding to the other side, and the height of the air outlet is enlarged to form the second distance height.
The centrifugal fan frame structure, wherein: the air outlet is provided with at least one reinforced rib part which is arranged on the lower shell and/or the cover body and extends to the air outlet horizontally.
The centrifugal fan frame structure, wherein: the heat pipe is arranged at the air outlet correspondingly to the fin group, and the height of the heat pipe overlapped with the fin group is lower than the second distance height of the air outlet.
The centrifugal fan frame structure, wherein: the air outlet is formed by the nonlinear expansion or linear gradual expansion of the first distance height to the second distance height.
The invention can effectively prevent the air outlet from being blocked by other elements (heat dissipation elements or heat conduction elements) by increasing the height of the air outlet, so that the air outlet has the defects of reduced heat dissipation efficiency or energy loss, noise at the outlet and the like.
Drawings
FIG. 1 is an exploded perspective view of a first embodiment of a centrifugal fan frame construction of the present invention;
FIG. 2 is a cross-sectional view of a first embodiment of the centrifugal fan frame structure of the present invention;
FIG. 3a is an exploded perspective view of a second embodiment of the centrifugal fan frame structure of the present invention;
FIG. 3b is a perspective assembly view of a second embodiment of the centrifugal fan frame structure of the present invention;
FIG. 4a is an exploded perspective view of a second embodiment of the centrifugal fan frame structure of the present invention;
FIG. 4b is a perspective assembly view of a second embodiment of the centrifugal fan frame structure of the present invention;
FIG. 5 is a schematic view of a third embodiment of a centrifugal fan frame structure according to the present invention;
FIG. 6 is a schematic view of a third embodiment of a centrifugal fan frame structure of the present invention;
fig. 7 is a schematic view of a centrifugal fan frame structure according to a third embodiment of the present invention.
Description of reference numerals: a lower case 11; a bottom 111; an outer wall portion 112; an air outlet 113; a shaft barrel 114; a stator 115; a bearing 116; an axis 1161; a fan wheel hub 1162; a blade 1163; a lid 12; an upper side 121; a lower side 122; an air inlet 123; a reinforcing rib 13; a space 14; a heat dissipation module 2; a heat pipe 21; a set of fins 22; a base 23; a heat generating source 3; case C4; case D5; a second distance height H; the first distance height h.
Detailed Description
The above objects, together with the structural and functional features thereof, are accomplished by the preferred embodiments according to the accompanying drawings.
Referring to fig. 1 and fig. 2, a three-dimensional exploded and sectional view of a frame structure of a centrifugal fan according to a first embodiment of the present invention includes: a lower housing 11, a cover 12;
the lower housing 11 has a bottom 111 and an outer wall 112, the outer wall 112 vertically surrounds the periphery of the bottom 111, and the outer wall 112 is opened with an air outlet 113.
The cover 12 has an upper side 121, a lower side 122 and an air inlet 123, the air inlet 123 penetrates through the upper and lower sides 121, 122 of the cover, the cover 12 and the lower housing 11 correspondingly cover to form a space 14, the air outlet 113 is communicated with the air inlet 123 through the space 14, a first distance height H is provided between the lower housing 11 and the cover 12 in the space 14, a second distance height H is provided between the lower housing 11 and the cover 12 at the air outlet 113, the second distance height H is greater than the first distance height H, and the air outlet 113 can be formed by expanding the first distance height H to the second distance height H in a non-linear manner.
The main current shortcoming of improving of present case lies in: when the air outlet of the centrifugal fan is assembled with the heat dissipating elements (heat dissipating fins) or the heat conducting elements (heat pipes), because the air outlet of the centrifugal fan is blocked by the heat pipes and the heat dissipating fins, the air outlet efficiency of the centrifugal fan is affected, and noise is generated at the air outlet, by increasing the second distance height H of the air outlet 113, and adopting the second distance height H slightly higher than the height of the heat dissipating elements (heat dissipating fins) or the heat conducting elements (heat pipes) or the height after the two are stacked, the air outlet efficiency of the centrifugal fan is forced to discharge 113 air is increased without being blocked by the heat dissipating elements (heat dissipating fins) or the heat conducting elements (heat pipes), and noise generation caused by the blocking of the air outlet 113 by the heat dissipating elements (heat dissipating fins) or the heat conducting elements (heat pipes) can be prevented.
Please refer to fig. 3a, fig. 3b, fig. 4a, and fig. 4b, which are exploded and assembled views of a centrifugal fan frame structure according to a second embodiment of the present invention, and as shown in the figures, a partial structure of this embodiment is the same as that of the first embodiment and will not be described herein, but the difference between this embodiment and the first embodiment is that this embodiment further includes at least one reinforcing rib 13, the reinforcing rib 13 is selectively disposed on either or both of the lower housing 11 or the cover 12, the reinforcing rib 13 is mainly formed by protruding or recessing the bottom 111 (see fig. 4a and fig. 4b) of the lower housing 11 or the lower side 122 (see fig. 3a and fig. 3b) of the cover 12 to form a rib structure, and the reinforcing rib 13 is formed by stamping, and the reinforcing rib 13 protrudes from the lower side 122 of the cover 12 to the upper side 121, or the reinforced rib part may be formed by stamping the lower case, and formed by the bottom of the lower case protruding to the other side, and the reinforced rib part 13 further enhances the structural strength of the lower case 11 and the cover 12.
In this embodiment, the reinforced rib 13 disposed near the air outlet 113 further extends to the air outlet 113, so as to increase the height of the air outlet 113, and simultaneously increase the height of the air outlet 113 to form the second distance height H, which is larger than the first distance height H.
Please refer to fig. 5, 6, and 7, which are schematic diagrams of a frame structure of a centrifugal fan according to a third embodiment of the present invention, and as shown in the drawings, a portion of the structure of this embodiment is the same as that of the first embodiment, and therefore will not be described herein again, but the difference between this embodiment and the first embodiment is that a shaft cylinder 114 is further vertically disposed on the lower casing 11, a stator 115 is sleeved outside the shaft cylinder 114, and a bearing 116 is accommodated inside the shaft cylinder 114.
A rotor set 116 has an axis 1161 and a fan hub 1162, the axis 1161 is perpendicular to the fan hub 1162, the rotor set is pivoted to the bearing 116 through the axis 1161, and a plurality of blades 1163 extend outside the fan hub 1162.
The present embodiment further includes a heat dissipation module 2, the heat dissipation module 2 has at least one heat pipe 21, a fin set 22 and a base 23, the base 23 is correspondingly contacted with a heat source 3 to conduct heat, one end of the heat pipe 21 is connected to the base 23, the other end is connected to the fin set 22, and is correspondingly disposed at the air outlet 113 with respect to the fin set 22, and the heat pipe 21 is lower than a second distance height H at the air outlet 113.
Referring to fig. 3a, 3b, 4a and 4b, the reinforced rib 13 is mainly used to reinforce the structural strength of the lower casing 11 or the upper cover 12 and is abutted against the C, D pieces 4 and 5 of the notebook computer, and this embodiment further discloses that the present invention combines the reinforced rib 13, which is used to reinforce the structural strength of the fan, on the lower casing 11 or the cover 12 of the fan with the air outlet 113, and the reinforced rib 13 increases the height of the air outlet 113, thereby improving the heat transfer efficiency reduction and the noise at the air outlet caused by the blocking of the air outlet 113 by the heat dissipation element or the heat conduction element.
The reinforced rib 13 of the present invention further increases the space between the C, D pieces 4 and 5 of the notebook computer, so that the air flow guided by the fan outlet 113 can flow between the C, D pieces 4 and 5 of the notebook computer and the heat dissipation element (fin set) or the heat conduction element (heat pipe), thereby increasing the cooling air flow of the notebook computer and avoiding heat accumulation in a specific area.
Claims (7)
1. A centrifugal fan frame structure, comprising:
the lower shell is provided with a bottom and an outer wall part, the outer wall part is vertically and circularly arranged on the periphery of the bottom, and the outer wall part is provided with an air outlet;
the cover body is provided with an upper side, a lower side and an air inlet, the air inlet penetrates through the upper side and the lower side of the cover body, the cover body and the lower shell are correspondingly covered to form a space, the air outlet is communicated with the air inlet through the space, a first distance height is formed between the lower shell and the cover body in the space, a second distance height is formed between the lower shell and the cover body and is positioned at the air outlet, and the second distance height is larger than the first distance height.
2. The centrifugal fan frame structure of claim 1, wherein: the lower shell is vertically provided with a shaft cylinder, a stator is sleeved outside the shaft cylinder, a bearing is contained inside the shaft cylinder, a rotor group is provided with an axis and a fan wheel hub, the axis is vertically connected with the fan wheel hub, the rotor is pivoted with the bearing through the axis, and a plurality of blades extend outside the fan wheel hub.
3. The centrifugal fan frame structure of claim 1, wherein: the reinforced rib part on the cover body is formed by stamping, and the reinforced rib part is formed by the lower side of the cover body protruding to the upper side, and the height of the air outlet is enlarged to form the second distance height.
4. The centrifugal fan frame structure of claim 1, wherein: the reinforced rib of the lower shell is formed by stamping, and the reinforced rib is formed by the bottom of the lower shell protruding to the other side, and the height of the air outlet is enlarged to form the second distance height.
5. The centrifugal fan frame structure of claim 1, wherein: the air outlet is provided with at least one reinforced rib part which is arranged on the lower shell and/or the cover body and extends to the air outlet horizontally.
6. The centrifugal fan frame structure of claim 1, wherein: the heat pipe is arranged at the air outlet correspondingly to the fin group, and the height of the heat pipe overlapped with the fin group is lower than the second distance height of the air outlet.
7. The centrifugal fan frame structure of claim 1, wherein: the air outlet is formed by the nonlinear expansion or linear gradual expansion of the first distance height to the second distance height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010905460.4A CN111963480B (en) | 2020-09-01 | 2020-09-01 | Frame structure of centrifugal fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010905460.4A CN111963480B (en) | 2020-09-01 | 2020-09-01 | Frame structure of centrifugal fan |
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| Publication Number | Publication Date |
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| CN111963480A true CN111963480A (en) | 2020-11-20 |
| CN111963480B CN111963480B (en) | 2023-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010905460.4A Active CN111963480B (en) | 2020-09-01 | 2020-09-01 | Frame structure of centrifugal fan |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2022152041A (en) * | 2021-03-29 | 2022-10-12 | Ｎｅｃパーソナルコンピュータ株式会社 | Fan module for portable information processing device and portable information processing device |
| US20230093736A1 (en) * | 2021-09-23 | 2023-03-23 | Delta Electronics, Inc. | Centrifugal fan |
| CN116241482A (en) * | 2023-03-31 | 2023-06-09 | 荣耀终端有限公司 | Radiator fan and electronic equipment |
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| CN116241482B (en) * | 2023-03-31 | 2023-12-19 | 荣耀终端有限公司 | Radiator fan and electronic equipment |
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| Publication number | Publication date |
|---|---|
| CN111963480B (en) | 2023-08-18 |
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