CN205047502U - Through -flow fan blade of moulding plastics - Google Patents
Through -flow fan blade of moulding plastics Download PDFInfo
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- CN205047502U CN205047502U CN201520753966.2U CN201520753966U CN205047502U CN 205047502 U CN205047502 U CN 205047502U CN 201520753966 U CN201520753966 U CN 201520753966U CN 205047502 U CN205047502 U CN 205047502U
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Abstract
The utility model relate to an air conditioner the accessory. A through -flow fan blade of moulding plastics, includes a plurality of end -to -end connection's the well festival, and the well festival is moulded plastics with polylith blade an organic whole by ring form rim plate and is constituted, and the blade bottom is even as an organic whole with ring form rim plate top surface, and the ring is equipped with a plurality of mounting grooves on describing the rim plate bottom surface, and the quantity of mounting groove is the same with blade quantity, and the blade profile is the arc, be equipped with on the face of blade top with blade even arc sand grip for the butt fusion as an organic whole, the butt fusion uses the arc length of arc sand grip to be the 60% -90% as the blade arc length, the width of arc sand grip is the 40% -60% of blade width for the butt fusion, the height of arc sand grip is 1 times - 1.2 times of blade width for the butt fusion. This through -flow fan blade of moulding plastics's advantage is blade and rim plate firm in connection, and product strength is high, has solved the problem that the operation of through -flow fan blade was rocked.
Description
Technical field
The utility model relates to a kind of air conditioner parts, especially a kind of through-flow fan blade.
Background technique
Through-flow fan blade is one of accessory important in air-conditioning, process by saving ultrasonic welding in multiple, middle joint is made up of circular wheel disc and polylith blade integrated injection molding, blade one end and the circular wheel disc back side are connected as a single entity, circular wheel disc front is provided with multiple mounting groove, weld bond is provided with in mounting groove, the quantity of blades installation groove is identical with blade quantity, during production, fixed by ultrasonic welding in the mounting groove of the adjacent middle joint of blade the other end insertion, its deficiency comprises blade and the location mutually between mounting groove and welding quality and cannot ensure when being ultrasonic welding, therefore exist and connect unstable problem, easily shake when not only affecting the intensity of through-flow fan blade but also use.
Summary of the invention
The purpose of this utility model is to solve existing injection moulding through-flow fan blade above shortcomings, providing a kind of blade and wheel disc to be connected firmly, the injection moulding through-flow fan blade that intensity is high.
In order to realize above-mentioned object, the utility model have employed following technological scheme:
A kind of injection moulding through-flow fan blade, comprise the middle joint that multiple head and the tail connect, middle joint is made up of circular wheel disc and polylith blade integrated injection molding, blade bottom end and circular wheel disc end face are connected as a single entity, circular wheel disc bottom surface is provided with multiple mounting groove, the quantity of mounting groove is identical with blade quantity, blade profile is curved, described blade tip face is provided with the welding arc raised line be connected as a single entity with blade, the arc length of welding arc raised line is the 60%-90% for blade arc length, the width of welding arc raised line is the 40%-60% of width of blade, the height of welding arc raised line is 1 times-1.2 times of width of blade.
As preferably, the distance between not all adjacent blades is all identical.
As preferably, the blade one that blade is divided into sectional shape different and blade two, the sectional shape between arbitrary neighborhood blade is different, and namely blade one and blade two are staggered.Further, the inner arc size of blade one is the 10%-13% of through-flow fan blade diameter, the outer arc size of blade one is the 8%-12% of through-flow fan blade diameter, and the inner arc size of blade two is 8%-14% of through-flow fan blade diameter, and the outer arc size of blade two is 9%-13% of through-flow fan blade diameter.Leaf different blade one and blade two is utilized to be staggered, air inlet/outlet angle curve is changed and recombinates, the surge sound produced by traditional fan blade effectively reduces or eliminates, and the change of leaf two can be utilized suitably to increase blowing area, can keep air quantity constant or increase, and effective elimination surge sound of the wind, reduces air-out sound further.
Have employed a kind of injection moulding through-flow fan blade of above-mentioned technological scheme, blade tip face is provided with the welding arc raised line be connected as a single entity with blade, the arc length of welding arc raised line is the 60%-90% for blade arc length, the width of welding arc raised line is the 40%-60% of width of blade, the height of welding arc raised line is 1 times-1.2 times of width of blade, welding arc raised line is convenient to being positioned with when welding and is helped improve ultrasonic fusing quality, effective solution fan blade runs the problem of rocking, reduce fan blade jitter values, and welding quality is better than other forms of welding mode, thus increase fan blade intensity.The advantage of this injection moulding through-flow fan blade is that blade and wheel disc are connected firmly, and product strength is high, solves through-flow fan blade and runs the problem of rocking.
Accompanying drawing explanation
Fig. 1: the middle joint structural representation of embodiment of the present utility model.
The enlarged diagram at A place in Fig. 2: Fig. 1.
Fig. 3: the cross-sectional view of embodiment's Leaf one of the present utility model.
Fig. 4: the cross-sectional view of embodiment's Leaf two of the present utility model.
Embodiment
Below in conjunction with Fig. 1, Fig. 2, Fig. 3 and Fig. 4, embodiment of the present utility model is made a detailed explanation.
A kind of injection moulding through-flow fan blade as shown in Figure 1, Figure 2, Figure 3 and Figure 4, comprise the middle joint that multiple head and the tail connect, middle joint is made up of circular wheel disc 2 and polylith blade 1 integrated injection molding, blade 1 bottom and circular wheel disc 2 end face are connected as a single entity, circular wheel disc 2 bottom surface is provided with multiple mounting groove, the quantity of mounting groove is identical with blade 1 quantity, and blade 1 is generally 31-35 sheet, and blade 1 cross section is curved.Distance between not all adjacent blades is all identical, and namely blade 1 is Unequal distance arrangement, can effectively reduce noise.
Blade 1 top end is provided with the welding arc raised line 13 be connected as a single entity with blade, the arc length of welding arc raised line 13 is the 60%-90% for blade 1 arc length, the width of welding arc raised line 13 is 40%-60% of blade 1 width, and the height of welding arc raised line 13 is 1 times-1.2 times of blade 1 width.During production, carry out ultrasonic welding in the mounting groove saved in the blade insertion next one saved in upper, blade 1 is fixed in mounting groove by welding arc raised line 13.
Take model as the injection moulding through-flow fan blade of 102-35-784.5 be example, product diameter is 102mm, length is 784.5mm, blade quantity is 35, weight is 820g, and blade arc length is 11.6mm, and width of blade is 1mm, in mounting groove, establish the existing injection moulding through-flow fan blade technical order of weld bond as follows: circular runout 0.5mm, axial runout 0.4mm; Amount of unbalance, left side is 0.11g, and right side is 0.09g; Tension strength is 3690N; Torsional strenght is 11N.m; Yield strength is 28kgf.Adopt the injection moulding through-flow fan blade of the art of this patent, welding arc raised line arc length is 10mm, and welding arc raised line width is 0.5mm, and welding arc raised line height is 0.5mm, and index is as follows: circular runout 0.35mm, axial runout 0.25mm; Amount of unbalance: left side is 0.05g, right side is 0.04g; Tension strength is 6200N, and torsional strenght is 16.7N.m, and yield strength is 42kgf, increases fan blade bulk strength.
The blade 1 that above-mentioned blade 1 can be divided into sectional shape different and blade 2 12, the sectional shape between arbitrary neighborhood blade is different, and namely blade 1 and blade 2 12 are staggered.Distance between not all adjacent blades 1 is all identical, and blade 1 and blade 2 12 are Unequal distance arrangements.The inner arc size of blade 1 is 10%-13% of through-flow fan blade diameter, the outer arc size of blade 1 is 8%-12% of through-flow fan blade diameter, the inner arc size of blade 2 12 is 8%-14% of through-flow fan blade diameter, and the outer arc size of blade 2 12 is 9%-13% of through-flow fan blade diameter.At least can reduce the noise of 2dB.
Claims (4)
1. an injection moulding through-flow fan blade, comprise the middle joint that multiple head and the tail connect, middle joint is made up of circular wheel disc and polylith blade integrated injection molding, blade bottom end and circular wheel disc end face are connected as a single entity, circular wheel disc bottom surface is provided with multiple mounting groove, the quantity of mounting groove is identical with blade quantity, blade profile is curved, it is characterized in that described blade tip face is provided with the welding arc raised line be connected as a single entity with blade, the arc length of welding arc raised line is the 60%-90% for blade arc length, the width of welding arc raised line is the 40%-60% of width of blade, the height of welding arc raised line is 1 times-1.2 times of width of blade.
2. a kind of injection moulding through-flow fan blade according to claim 1, is characterized in that the distance between not all adjacent blades is all identical.
3. a kind of injection moulding through-flow fan blade according to claim 1, is characterized in that the blade one that blade is divided into sectional shape different and blade two, and the sectional shape between arbitrary neighborhood blade is different, and namely blade one and blade two are staggered.
4. a kind of injection moulding through-flow fan blade according to claim 3, it is characterized in that the inner arc size of blade one is the 10%-13% of through-flow fan blade diameter, the outer arc size of blade one is the 8%-12% of through-flow fan blade diameter, the inner arc size of blade two is 8%-14% of through-flow fan blade diameter, and the outer arc size of blade two is 9%-13% of through-flow fan blade diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520753966.2U CN205047502U (en) | 2015-09-25 | 2015-09-25 | Through -flow fan blade of moulding plastics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520753966.2U CN205047502U (en) | 2015-09-25 | 2015-09-25 | Through -flow fan blade of moulding plastics |
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| Publication Number | Publication Date |
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| CN205047502U true CN205047502U (en) | 2016-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520753966.2U Active CN205047502U (en) | 2015-09-25 | 2015-09-25 | Through -flow fan blade of moulding plastics |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223430A (en) * | 2017-08-23 | 2018-06-29 | 广东顺威精密塑料股份有限公司 | A kind of through-flow fan blade |
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2015
- 2015-09-25 CN CN201520753966.2U patent/CN205047502U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223430A (en) * | 2017-08-23 | 2018-06-29 | 广东顺威精密塑料股份有限公司 | A kind of through-flow fan blade |
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