CN103953581A - Centrifugal fan blade and injection molding method thereof, and air conditioner with centrifugal fan blade - Google Patents
Centrifugal fan blade and injection molding method thereof, and air conditioner with centrifugal fan blade Download PDFInfo
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- CN103953581A CN103953581A CN201410108404.2A CN201410108404A CN103953581A CN 103953581 A CN103953581 A CN 103953581A CN 201410108404 A CN201410108404 A CN 201410108404A CN 103953581 A CN103953581 A CN 103953581A
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- blade
- frame
- centrifugation blade
- centrifugation
- centrifugal fan
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Abstract
The invention provides a centrifugal fan blade and an injection molding method thereof, and an air conditioner with the centrifugal fan blade. The centrifugal fan blade comprises a blade (1) and a frame (2), wherein the frame (2) is arranged at the periphery of an outer circle of the blade (1); the frame (2) and the blade (1) are integrally formed through injection; the frame (2) has a rectangular section along the axial direction of the centrifugal fan blade, and the height H of the rectangle in the axial direction of the centrifugal fan blade is greater than the width L of the rectangle in the radial direction of the centrifugal fan blade. When an injection molding material flows through the blade along the injection molding direction to reach the frame, the cooling area of the centrifugal fan blade in the axial direction can be effectively increased; in the injection molding process, the injection molding material can quickly permeate an injection molding center of the frame and is quickly cooled, and air bubbles are difficultly generated, namely the air bubbles generated at the frame of the centrifugal fan blade can be effectively reduced and the strength of the centrifugal fan blade is improved.
Description
Technical field
The present invention relates to air-conditioning technical field, in particular to a kind of centrifugation blade and injection moulding process thereof with there is its air conditioner.
Background technique
Existing centrifugation blade, comprises blade and frame, and its Leaf and frame pass through injection moulding integrated molding.In injection moulding process, border structure easily produces a large amount of bubbles, so not only can affect the intensity of centrifugation blade, also can cause the hidden danger of quality that fracture is damaged.Therefore, how effectively to reduce frame bubble, be the technical problem that those skilled in the art pay close attention to always.Inventor attempts, by adjusting Shooting Technique parameter, increase die venting, adjusting injected plastics material mobility etc., all cannot effectively solving air bubble problem.Summary of the invention
The present invention aims to provide a kind of centrifugation blade and injection moulding process thereof and has its air conditioner, the bubble producing at frame place effectively to reduce centrifugation blade, the intensity of raising centrifugation blade.
To achieve these goals, according to an aspect of the present invention, a kind of centrifugation blade is provided, comprise blade and frame, described frame is arranged on around the cylindrical of described blade, and described frame and described blade pass are crossed injection moulding integrated molding, and described frame is rectangle along the sectional shape of centrifugation blade axial direction, described rectangular at centrifugation blade the height H on be axially greater than its in centrifugation blade footpath width L upwards.
Further, in centrifugation blade footpath, width L is upwards less than 1.3 times of maximum ga(u)ge D of described blade to described rectangular.
Further, described blade is the crescent moon that two ends are thin, middle part is thick along centrifugation blade cross section radially, and described crescent moon central position is the thickest.
Further, described rectangular at centrifugation blade the height H on be axially its in centrifugation blade footpath 2.5～3 times of width L upwards.
Further, described frame is arranged on around the cylindrical of described blade upper end.
Further, described frame upper end is concordant with described blade upper end.
Further, centrifugation blade also comprises base plate, and described base plate is connected away from one end of described frame with described blade.
According to a further aspect in the invention, provide a kind of injection moulding process of centrifugation blade, start to carry out injection moulding to described frame direction away from one end of described frame from described blade.
According to a further aspect in the invention, provide a kind of injection moulding process of centrifugation blade, injection moulding direction, for from described base plate, through described blade, finally arrives described frame.
According to a further aspect in the invention, provide a kind of air conditioner, comprise centrifugal blower, described centrifugal blower has as above the centrifugation blade described in any.
Apply technological scheme of the present invention, due to frame is designed to rectangular along the sectional shape of centrifugation blade axial direction, and described rectangular at centrifugation blade the height H on be axially greater than its in centrifugation blade footpath width L upwards, in the time that injected plastics material is flowed through blade arrival frame along injection moulding direction, such structure can effectively increase the film-cooled heat of centrifugation blade axial direction, in Shooting Technique process, can rapid osmotic to the injection moulding center of frame, cooling fast, be not easy to produce bubble, can effectively reduce the bubble that centrifugation blade produces at frame place, improve the intensity of centrifugation blade.
Brief description of the drawings
The Figure of description that forms a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is according to the structural representation of the centrifugation blade of the embodiment of the present invention;
Fig. 2 is the cross section structure schematic diagram according to the centrifugation blade of Fig. 1;
Fig. 3 is according to the partial enlarged drawing of Fig. 2 reference character A;
Wherein, above-mentioned accompanying drawing comprises the following drawings mark:
Blade 1, frame 2, base plate 3
Embodiment
It should be noted that, in the situation that not conflicting, the feature in embodiment and embodiment in the present invention can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
Shown in figure 1 and Fig. 2, centrifugation blade of the present invention, comprises blade 1 and frame 2.Frame 2 is arranged on around the cylindrical of blade 1, and frame 2 passes through injection moulding integrated molding with described blade 1.Shown in figure 3, described frame 2 is rectangle along the sectional shape of centrifugation blade axial direction, the height of described rectangular on centrifugation blade is axial is H, described rectangular is L at centrifugation blade footpath width upwards, and the height H of described rectangular on centrifugation blade is axial is greater than it at centrifugation blade
+footpath width L upwards.
Inventor is through long-term research and repetition test, discovery centrifugation blade easily produces bubble reason at frame place is that injection moulding process Leaf is different from the cooling degree of frame, blade cooled and solidified in advance often, cause injection pressure pressurize to arrive frame, cause injected plastics material to inside contract at frame place and form shrinkage cavity, producing bubble.The laboratory data drawing by the analysis of CAE mould stream refrigerating module is as follows:
Can find out from above laboratory data, due to the sectional shape of frame 2 is designed to rectangular, and described rectangular at centrifugation blade the height H on be axially greater than its in centrifugation blade footpath width L upwards, when injected plastics material is flowed through blade 1 while arriving frame 2 along injection moulding direction, such structure can effectively increase the film-cooled heat of centrifugation blade axial direction, in Shooting Technique process, can rapid osmotic to the injection moulding center of frame 2, cooling fast, be not easy to produce bubble, can effectively reduce the bubble that centrifugation blade produces at frame 2 places, improve the intensity of centrifugation blade.
The bubble producing at frame 2 places in order further to reduce centrifugation blade, inventor draws by cooling simulation analysis: when described rectangular is when in centrifugation blade footpath, width L is upwards greater than 1.3 times of maximum ga(u)ge D of described blade 1, cause the first cooled and solidified of blade, injection pressure cannot be communicated to frame place, easily inside contracts formation bubble.When described rectangular is when in centrifugation blade footpath, width L is upwards less than 1.3 times of maximum ga(u)ge D of described blade 1, frame and blade are realized evenly cooling, synchronously solidify, and injection pressure is easily communicated to frame place, is difficult for inside contracting formation bubble.Therefore we described rectangular, in centrifugation blade footpath, width L is upwards designed to be less than 1.3 times of maximum ga(u)ge D of described blade 1.Be designed to this kind of structure, blade 1 and frame 2 can be realized evenly cooling and synchronously solidify, and injection pressure is easily conveyed to frame 3 places, are difficult for inside contracting and form bubble, can reduce further the bubble that centrifugation blade produces at frame 3 places, improve the intensity of centrifugation blade.
Further, described blade 1 is the crescent moon that two ends are thin, middle part is thick along centrifugation blade cross section radially, and described crescent moon central position is the thickest.Be that blade 1 has maximum ga(u)ge at the center position of crescent moon, as shown in Figure 3, the maximum ga(u)ge of blade 1 is D.
In order further to reduce the bubble that centrifugation blade produces at frame place, as further improved technical scheme of the present invention, described rectangular at centrifugation blade the height H on be axially its in centrifugation blade footpath 2.5～3 times of width L upwards.
Further, described frame 2 is arranged on around the cylindrical of described blade 1 upper end.Shown in figure 3, such structure can effectively utilize frame 2 and fix blade 1, facilitates the normal operation of centrifugation blade, also can in Shooting Technique process, reduce the bubble that centrifugation blade produces at frame 2 places, improves the intensity of centrifugation blade.
Further, described frame 2 upper ends are concordant with described blade 1 upper end.Shown in figure 3, described frame 2 upper ends are concordant with described blade 1 upper end, frame 2 upper ends and blade 1 upper end are arranged in same plane, in injection moulding process, injected plastics material is more easily flowed through to frame 2 by blade 1, fast and easy infiltration and cooling.
Further, centrifugation blade also comprises base plate 3, and described base plate 3 is connected away from one end of described frame 2 with described blade 1.Shown in figure 3, described base plate 3 and described blade 1 are passed through in injection moulding integrated molding away from one end of described frame 2, described base plate can effectively support described blade, reduces the noise that blade produces in rotation process.
The present invention also provides a kind of injection moulding process of centrifugation blade, and wherein injection moulding direction is as shown in Fig. 2 arrow, and injected plastics material starts to carry out injection moulding to described frame 2 directions away from one end of described frame 2 along injection moulding direction from described blade 1.
The present invention also provides a kind of injection moulding process of centrifugation blade, and wherein injection moulding direction is as shown in Fig. 2 arrow, and injected plastics material from described base plate 3, through described blade 1, finally arrives described frame 2 along injection moulding direction.
The present invention also provides a kind of air conditioner, comprises centrifugal blower, and centrifugal blower has as above the centrifugation blade described in any.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a centrifugation blade, comprise blade (1) and frame (2), described frame (2) is arranged on around the cylindrical of described blade (1), and described frame (2) passes through injection moulding integrated molding with described blade (1), it is characterized in that, described frame (2) is rectangle along the sectional shape of centrifugation blade axial direction, described rectangular at centrifugation blade the height H on be axially greater than its in centrifugation blade footpath width L upwards.
2. centrifugation blade according to claim 1, is characterized in that, in centrifugation blade footpath, width L is upwards less than 1.3 times of maximum ga(u)ge D of described blade (1) to described rectangular.
3. centrifugation blade according to claim 2, is characterized in that: described blade (1) is the crescent moon that two ends are thin, middle part is thick along centrifugation blade cross section radially, and described crescent moon central position is the thickest.
4. centrifugation blade according to claim 1 and 2, is characterized in that, described rectangular at centrifugation blade the height H on be axially its in centrifugation blade footpath 2.5～3 times of width L upwards.
5. centrifugation blade according to claim 1 and 2, is characterized in that, described frame (2) is arranged on around the cylindrical of described blade (1) upper end.
6. centrifugation blade according to claim 1 and 2, is characterized in that, described frame (2) upper end is concordant with described blade (1) upper end.
7. centrifugation blade according to claim 1 and 2, is characterized in that, also comprises base plate (3), and described base plate (3) is connected away from one end of described frame (2) with described blade (1).
8. an injection moulding process for the centrifugation blade as described in claim 1 to 6 any one, is characterized in that, starts to carry out injection moulding to described frame (2) direction away from one end of described frame (2) from described blade (1).
9. an injection moulding process for centrifugation blade as claimed in claim 7, is characterized in that, injection moulding direction is from described base plate (3), through described blade (1), finally arrives described frame (2).
10. an air conditioner, comprises centrifugal blower, it is characterized in that, described centrifugal blower has the centrifugation blade as described in claim 1-9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410108404.2A CN103953581A (en) | 2014-03-21 | 2014-03-21 | Centrifugal fan blade and injection molding method thereof, and air conditioner with centrifugal fan blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410108404.2A CN103953581A (en) | 2014-03-21 | 2014-03-21 | Centrifugal fan blade and injection molding method thereof, and air conditioner with centrifugal fan blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103953581A true CN103953581A (en) | 2014-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410108404.2A Pending CN103953581A (en) | 2014-03-21 | 2014-03-21 | Centrifugal fan blade and injection molding method thereof, and air conditioner with centrifugal fan blade |
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| CN (1) | CN103953581A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107152413A (en) * | 2017-06-29 | 2017-09-12 | 浙江大学 | A kind of low pulse centrifugal impeller of combined type |
Citations (7)
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|---|---|---|---|---|
| US6168734B1 (en) * | 1997-12-08 | 2001-01-02 | Visteon Global Technologies, Inc. | Method for balancing a centrifugal fan |
| CN1280254A (en) * | 1999-03-03 | 2001-01-17 | 三菱电机株式会社 | Multiple blade fan, forming method and device for producing melting metal thereof |
| CN201284757Y (en) * | 2008-10-28 | 2009-08-05 | 珠海格力电器股份有限公司 | Centrifugal blower and air conditioner employing the same |
| CN201306307Y (en) * | 2008-05-16 | 2009-09-09 | 海尔集团公司 | Centrifugal fan |
| CN201420710Y (en) * | 2009-05-18 | 2010-03-10 | 宁波朗迪叶轮机械有限公司 | Dual-head centrifugal fan blade |
| CN102141051A (en) * | 2011-05-06 | 2011-08-03 | 美的集团有限公司 | Centrifugal fan impeller of range hood |
| CN203743060U (en) * | 2014-03-21 | 2014-07-30 | 珠海格力电器股份有限公司 | Centrifugal fan blade and air conditioner with same |
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2014
- 2014-03-21 CN CN201410108404.2A patent/CN103953581A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6168734B1 (en) * | 1997-12-08 | 2001-01-02 | Visteon Global Technologies, Inc. | Method for balancing a centrifugal fan |
| CN1280254A (en) * | 1999-03-03 | 2001-01-17 | 三菱电机株式会社 | Multiple blade fan, forming method and device for producing melting metal thereof |
| CN201306307Y (en) * | 2008-05-16 | 2009-09-09 | 海尔集团公司 | Centrifugal fan |
| CN201284757Y (en) * | 2008-10-28 | 2009-08-05 | 珠海格力电器股份有限公司 | Centrifugal blower and air conditioner employing the same |
| CN201420710Y (en) * | 2009-05-18 | 2010-03-10 | 宁波朗迪叶轮机械有限公司 | Dual-head centrifugal fan blade |
| CN102141051A (en) * | 2011-05-06 | 2011-08-03 | 美的集团有限公司 | Centrifugal fan impeller of range hood |
| CN203743060U (en) * | 2014-03-21 | 2014-07-30 | 珠海格力电器股份有限公司 | Centrifugal fan blade and air conditioner with same |
Non-Patent Citations (3)
| Title |
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| 刘青山: "《塑料注射成型技术》", 30 September 2010, 中国轻工业出版社 * |
| 崔继耀，谭丽娟: "《注塑成型技术难题解答》", 31 January 2007, 国防工业出版社 * |
| 李刚: "《Pro/ENGINEER中文野火版塑料模具设计从入门到精通》", 30 April 2008, 中国青年出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107152413A (en) * | 2017-06-29 | 2017-09-12 | 浙江大学 | A kind of low pulse centrifugal impeller of combined type |
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Application publication date: 20140730 |