CN111963480B - Frame structure of centrifugal fan - Google Patents
Frame structure of centrifugal fan Download PDFInfo
- Publication number
- CN111963480B CN111963480B CN202010905460.4A CN202010905460A CN111963480B CN 111963480 B CN111963480 B CN 111963480B CN 202010905460 A CN202010905460 A CN 202010905460A CN 111963480 B CN111963480 B CN 111963480B
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- CN
- China
- Prior art keywords
- air outlet
- cover body
- height
- lower shell
- distance height
- 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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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
-
- 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
-
- 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
Abstract
The invention provides a centrifugal fan frame structure, comprising: a lower housing and a cover; the lower shell is provided with a bottom and an outer wall part, the outer wall part is vertically arranged around the periphery of the bottom in a surrounding way, 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 is larger than the first distance height, and the air outlet is prevented from being blocked by a heat dissipation element (module) matched with the air outlet by increasing the height of the air outlet, so that the flow field efficiency and the noise are improved.
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 fan noise and enhancing structural strength of the fan.
Background
The traditional notebook computer has a narrow internal space, and the heat source is arranged at the center to easily generate accumulated heat, so that a general practitioner guides heat to the side air outlet through arranging the heat pipe, and then the fan brings the heat guided by the heat pipe away from the internal space to achieve the aim of cooling.
The distance between the heat pipe and the C/D piece of the notebook computer shell is only 0.8-0.9 mm, the surface temperature of the notebook computer is too high due to heat radiation to the C/D piece, so that the problem of poor use experience of consumers is solved, the original fan structural design is that the height of the upper cover (or the bottom plate) of the fan shell is almost the same as that of the heat pipe, the help for reducing the surface temperature of the notebook computer is limited, and the air flow boundary height is completely the same as that of the heat pipe, resistance exists at the air outlet of the fan, noise is caused (the position of the fan is usually on the left side and the right side and is close to the operation areas of the two hands and the two legs), therefore, the user can easily feel that the surface temperature of the pen is higher, the high heat generated at the air outlet also causes the bottom of the notebook computer, discomfort is generated when the user touches the notebook computer, besides, the fan-out wind or flow field efficiency is more easily generated, and the heat dissipation (heat conduction) elements or modules such as the heat dissipation fins are directly butted or arranged at the air outlet of the fan, so that the noise and the heat dissipation effect are not improved.
Disclosure of Invention
Therefore, in order to effectively solve the above-mentioned problems, a main object of the present invention is to provide a fan housing that increases the height of the air outlet, thereby increasing the smoothness of the air flow guiding of the fan and preventing the noise generated by the air flow striking the heat conduction element at the air outlet.
In order 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 arranged around the periphery of the bottom in a surrounding manner, and an air outlet is formed in the outer wall part;
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 at the air outlet, and the second distance height is larger than the first distance height.
The centrifugal fan frame body structure, wherein: the lower shell is vertically provided with a shaft cylinder, the outside of the shaft cylinder is sleeved with a stator, the inside of the shaft cylinder is provided with a bearing, a rotor set is provided with an axle center and a fan blade hub, the axle center is vertically connected with the fan blade hub, the rotor is pivoted with the bearing through the axle center, and the outside of the fan blade hub extends a plurality of blades.
The centrifugal fan frame body structure, wherein: the reinforced rib part on the cover body is formed by punching, and is formed by protruding from the lower side to the upper side of the cover body, and the height of the air outlet is enlarged to form the second distance height.
The centrifugal fan frame body structure, wherein: the reinforced rib part of the lower shell is formed by punching, is formed by protruding from the bottom of the lower shell to the other side, and enlarges the height of the air outlet to form the second distance height.
The centrifugal fan frame body 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 horizontally extends to the air outlet.
The centrifugal fan frame body structure, wherein: the heat dissipation module is provided with at least one heat pipe, a fin group and a base, wherein the base is correspondingly contacted with a heating source to conduct heat, one end of the heat pipe is connected with the base, the other end of the heat pipe is connected with the fin group, the heat pipe and the fin group are correspondingly arranged at the air outlet, and the superposed height of the heat pipe and the fin group is lower than the second distance height at the air outlet.
The centrifugal fan frame body structure, wherein: the air outlet is formed by nonlinear expansion or linear gradual expansion of the first distance height to the second distance height.
The height of the air outlet is increased by the invention, so that the air outlet can be effectively prevented from being blocked by other elements (heat dissipation elements or heat conduction elements), and the air outlet is enabled to generate the defects of reduced heat dissipation efficiency or incapacitation, noise at the outlet and the like.
Drawings
Fig. 1 is an exploded perspective view of a first embodiment of a centrifugal fan frame structure of the present invention;
FIG. 2 is a cross-sectional view of a first embodiment of a centrifugal fan housing structure of the present invention;
FIG. 3a is an exploded perspective view of a second embodiment of a centrifugal fan housing structure of the present invention;
FIG. 3b is a perspective view of a second embodiment of a centrifugal fan frame structure according to the present invention;
FIG. 4a is an exploded perspective view of a second embodiment of a centrifugal fan housing structure of the present invention;
FIG. 4b is a perspective view of a second embodiment of a centrifugal fan frame structure according to the present invention;
FIG. 5 is a schematic view of a third embodiment of a centrifugal fan frame structure of 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 third embodiment of a centrifugal fan frame structure of the present invention.
Reference numerals illustrate: a lower case 11; a bottom 111; an outer wall portion 112; an air outlet 113; a shaft barrel 114; a stator 115; axle center 1161; fan blade hub 1162; blades 1163; a cover 12; an upper side 121; an underside 122; an air inlet 123; reinforcing ribs 13; a space 14; a heat radiation module 2; a heat pipe 21; fin group 22; a base 23; a heat source 3; a housing C member 4; a housing D piece 5; a second distance height H; a first distance height h.
Detailed Description
The above objects of the present invention, as well as the structural and functional characteristics thereof, will be described in terms of the preferred embodiments of the present invention as illustrated in the accompanying drawings.
Referring to fig. 1 and 2, a first embodiment of a centrifugal fan frame structure according to the present invention includes: a lower case 11 and a cover 12;
the lower housing 11 has a bottom 111 and an outer wall 112, the outer wall 112 is vertically disposed around the periphery of the bottom 111, and the outer wall 112 is provided 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 and 122 of the cover, the cover 12 and the lower housing 11 are correspondingly covered 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 arranged between the lower housing 11 and the cover 12 in the space 14, a second distance height H is arranged between the lower housing 11 and the cover 12 at the air outlet 113, the second distance height H is larger than the first distance height H, and the air outlet 113 is formed by non-linearly expanding or gradually expanding the first distance height H to the second distance height H.
The main current deficiency that improves of this case lies in: when the centrifugal fan air outlet is assembled with the heat dissipation element (heat dissipation fin) or the heat conduction element (heat pipe), the air outlet of the centrifugal fan is blocked by the heat pipe and the heat dissipation fin, so that noise is generated at the air outlet besides influencing the air outlet efficiency of the centrifugal fan, and the air outlet 113 is prevented from being blocked by the heat dissipation element (heat dissipation fin) or the heat conduction element (heat pipe) to generate noise by increasing the second distance height H of the air outlet 113, which is slightly higher than the height of the heat dissipation element (heat dissipation fin) or the heat conduction element (heat pipe) or the height of the heat dissipation element (heat pipe) after the heat dissipation element (heat pipe) or the heat conduction element (heat pipe) is mutually stacked.
Referring to fig. 3a, 3b, 4a, and 4b, which are perspective exploded and assembled views of a second embodiment of the centrifugal fan frame structure of the present invention, as shown in the drawings, the partial structure of the present embodiment is the same as that of the first embodiment and will not be described herein, but the present embodiment is different from the first embodiment in that the present embodiment further has at least one reinforcing rib 13, and the reinforcing rib 13 is optionally disposed on either or both of the lower housing 11 and the cover 12, and the reinforcing rib 13 is mainly formed by forming a rib structure on the bottom 111 (fig. 4a and 4 b) of the lower housing 11 or the lower side 122 (fig. 3a and 3 b) of the cover 12 by embossing or recessing, and the reinforcing rib 13 is formed by embossing the lower side 122 of the cover 12 to the upper side 121, or may also be formed by forming the rib 13 by embossing the lower housing, forming the reinforcing rib 13 by embossing the other side of the lower housing, and enhancing the strength of the lower housing 11 and the cover 12.
In this embodiment, the reinforcing rib 13 disposed near the air outlet 113 further extends to the air outlet 113, so as to enlarge the height of the air outlet 113, and simultaneously enlarge the height of the air outlet 113 to form the second distance height H, so that the second distance height H is greater than the first distance height H.
Please refer to fig. 5, 6 and 7, which are schematic diagrams of a third embodiment of the frame structure of the centrifugal fan according to the present invention, as shown in the drawings, the partial structure of the present embodiment is the same as that of the first embodiment, and will not be described herein, but the difference between the present embodiment and the first embodiment is that the lower housing 11 further has a shaft 114, and a stator 115 is sleeved outside the shaft 114, and a bearing is disposed inside the shaft.
A rotor set 116 has a hub 1161 and a blade hub 1162, the hub 1161 is vertically connected to the blade hub 1162, and the rotor set is pivoted to the bearing through the hub 1161, and a plurality of blades 1163 extend from the blade hub 1162.
The heat dissipation module 2 further comprises a heat dissipation module 2, wherein the heat dissipation module 2 comprises at least one heat pipe 21, a fin group 22 and a base 23, the base 23 is correspondingly contacted with the heat source 3 to conduct heat, one end of the heat pipe 21 is connected with the base 23, the other end of the heat pipe is connected with the fin group 22, and the heat pipe 21 is correspondingly arranged at the air outlet 113 and is lower than a second distance height H at the air outlet 113 with the fin group 22.
Referring to fig. 3a, 3b, 4a, and 4b, the reinforcing rib 13 is mainly used for enhancing the structural strength of the lower housing 11 or the cover 12, and abuts against the casing C, D pieces 4 and 5 of the notebook computer, and the embodiment further discloses that the present invention mainly combines the reinforcing rib 13 on the lower housing 11 or the cover 12 of the fan, which is used for enhancing the structural strength of the fan, with the air outlet 113, and increases the height of the air outlet 113 by the reinforcing rib 13, thereby improving the reduction of the heat transfer efficiency 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.
In the invention, the reinforced rib 13 further increases the space between the casing C, D pieces 4 and 5 of the notebook computer, so that the air flow guided by the fan air outlet 113 can flow between the casing C, D pieces 4 and 5 of the notebook computer and the heat dissipation element (fin group) or the heat conduction element (heat pipe), thereby increasing the cooling air flow of the casing of the notebook computer and avoiding heat accumulation in a specific area.
Claims (4)
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 arranged around the periphery of the bottom in a surrounding manner, and an air outlet is formed in the outer wall part;
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, and a second distance height is arranged between the lower shell and the cover body and is positioned at the air outlet;
the air outlet is provided with at least one reinforced rib part which is arranged at the bottom of the lower shell and/or the cover body and horizontally extends to the air outlet, wherein the bottom of the lower shell and/or the reinforced rib part on the cover body is of a structure formed by punching, the reinforced rib part protrudes towards the direction away from the space and enlarges the height of the air outlet to form the second distance height, so that the second distance height is larger than the first distance height; a kind of electronic device with high-pressure air-conditioning system
The heat radiation module is provided with at least one heat pipe, a fin group and a base, one end of the heat pipe is connected with the base, the heat pipe and the fin group are arranged at the air outlet, and the superposed height of the heat pipe and the fin group is lower than the second distance height at the air outlet.
2. The centrifugal fan frame structure of claim 1, wherein: the lower shell is vertically provided with a shaft cylinder, the outside of the shaft cylinder is sleeved with a stator, the inside of the shaft cylinder is provided with a bearing, a rotor set is provided with an axle center and a fan blade hub, the axle center is vertically connected with the fan blade hub, the rotor set is pivoted with the bearing through the axle center, and the outside of the fan blade hub is extended with a plurality of blades.
3. The centrifugal fan frame structure of claim 1, wherein: the base is contacted with a heating source to conduct heat, and the other end of the heat pipe is connected with the fin group.
4. The centrifugal fan frame structure of claim 1, wherein: the air outlet is formed by 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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111963480A CN111963480A (en) | 2020-11-20 |
| CN111963480B true 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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Families Citing this family (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 |
| US11781567B2 (en) * | 2021-09-23 | 2023-10-10 | Delta Electronics, Inc. | Centrifugal fan |
| 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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| CN111963480A (en) | 2020-11-20 |
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