CN100529423C

CN100529423C - Turbine fan and its manufacturing method

Info

Publication number: CN100529423C
Application number: CNB2005101279272A
Authority: CN
Inventors: 赵敏纪; 崔元硕; 李容镐
Original assignee: Samsung Electronics Co Ltd
Current assignee: Samsung Electronics Co Ltd
Priority date: 2005-09-14
Filing date: 2005-12-07
Publication date: 2009-08-19
Anticipated expiration: 2025-12-07
Also published as: KR101264776B1; KR20070031160A; CN1932301A

Abstract

The invention discloses a turbine fan and a manufacturing method thereof to reduce disqualification ratio, increase production efficiency and to exert an excellent air draft performance of the turbine fan. According to the invention, the turbine fan comprises: a baffle for guiding induction air; a first rotary board opposite to the baffle with a central part combined with a axis and with an external diameter less than or equal to an inner diameter of the baffle; a plurality of vanes with one end connecting to the baffle and the other end connecting to the first rotary board and the vanes the baffle and the first rotary board molding into an integral one; and a second rotary board combined with outside vanes of the first rotary board with an inner diameter part joining to an external diameter part of the first rotary board.

Description

Turbofan and manufacture method thereof

Technical field

The present invention relates to a kind of turbofan and manufacture method thereof, relate in particular to the turbofan and the manufacture method thereof that are easy to make

Background technique

Korea S's publication communique " 2002-0066550 number " has disclosed a kind of turbofan structure of ceiling board type air conditioner.This turbofan comprises: the baffle plate (shroud) that is used to guide the fluid that sucks; , its external diameter opposed with baffle plate is less than the wheel hub (hub) of baffle plate internal diameter; It is on baffle plate and the wheel hub, mutual to equidistant a plurality of blades arranged apart that two ends are connected to.This turbofan is owing to the wheel hub external diameter is easy to mold separation less than the baffle plate internal diameter, thereby can be fabricated to one by plastic-blasting method (injection molding).

But, though this turbofan help reducing cost because of being fabricated to one because the wheel hub external diameter is less than baffle plate internal diameter (compare with common turbofan, be the shape that is removed of wheel hub shell), thereby the problem that exists the air draft performance to reduce.

Except that this method, the turbofan manufacture method that is widely known by the people is for as shown in Figure 1, to have the flap of joint 1a 1 and blade 2, to adopt a mould-forming be one, baffle plate 3 then has other mould-forming, by methods such as ultrasonic wave or hot melts these component is mutually combined in the operation in the back then.

But the manufacture method of this turbofan, owing to baffle plate 3 internal surfaces that are curved surface are combined with blade 2 front end 2a by ultrasonic wave or hot melting way, thereby not only because of the characteristic of its curvature portion be easy to cause bonding bad, but also because of being difficult to the bonding manufacturing efficiency that reduces.

Summary of the invention

The present invention proposes in order to solve aforesaid problem, and its purpose is to provide a kind of turbofan and manufacture method thereof, can reduce disqualification rate when not only making and enhances productivity, but also can bring into play good air draft performance.

To achieve these goals, according to turbofan provided by the present invention, it is characterized in that comprising: be used to guide the baffle plate that sucks air; Opposed and arrange first flap with described baffle plate, its central part is in conjunction with axle, and its external diameter is less than or equal to described baffle plate internal diameter; One end is connected in described baffle plate and the other end is connected in a plurality of blades of described first flap, and these a plurality of blades and described baffle plate and first flap are shaped to one; Be incorporated into second flap of the described blade of the described first flap shell side, its inner-diameter portion whose contacts the described first flap outer radius portion.

And described second flap and described blade pass are crossed the ultrasonic wave welding and by bonding.

And the described blade tip that combines with described second flap is the plane.

And, manufacture method according to turbofan provided by the present invention is characterized in that comprising operation: will be used to guide the baffle plate that sucks air, first flap of combination axle and a plurality of blade plastic-blastings that two ends are incorporated into described baffle plate and described flap respectively to be shaped to one; Second flap plastic-blasting moulding separately of the described first flap shell side will be used for being incorporated into; Described second flap is attached to the described blade tip of the described first flap shell side.

Description of drawings

Fig. 1 is the decomposing schematic representation of the existing turbofan structure of expression;

Fig. 2 is the schematic representation of expression according to turbofan provided by the present invention front portion;

Fig. 3 is the schematic representation of expression according to turbofan provided by the present invention rear portion;

Fig. 4 is the sectional drawing that is used to make according to first and second mould of turbofan provided by the present invention, and expression mold separation state;

Fig. 5 makes this sectional drawing according to first and second mould that the turbofan that is provided is provided for being used to, and represents the state that mould is combined as a whole;

Fig. 6 is that expression is used to make the sectional drawing according to the 3rd and the 4th mould of turbofan provided by the present invention.

Main symbol description: 10 is turbofan, and 11 is baffle plate, and 12 is first flap, and 13 is blade, and 14 is second flap, and 20 is first mould, and 30 is second mould, and 40 is the 3rd mould, and 50 is the 4th mould.

Embodiment

Below, describe in detail according to preferred embodiment provided by the present invention with reference to accompanying drawing.

As shown in Figures 2 and 3, comprise according to turbofan 10 provided by the present invention: be used to guide the ring-shaped baffle 11 that sucks air; Opposed with baffle plate 11 and arrange, its central part is provided for combining first flap 12 of the axle connecting part 12a of rotating shaft (not shown); One end is connected in baffle plate 11 internal surfaces and the inside part of the other end is connected in a plurality of blades 13 of first flap 12, and these a plurality of blades are isolated mutually by sense of rotation.And turbofan provided by the present invention also comprises ring-type second flap 14 that is incorporated into first flap, 12 shell side blades, 13 outer ends as shown in Figure 3.

When making this turbofan 10, baffle plate 11, first flap 12 and a plurality of blade 13 are shaped to one by the plastic-blasting method, and second flap 14 is attached to second flap 14 on the blade 13 outer end 13a of first flap, 12 shell side by after the other moulding of plastic-blasting method.At this moment, the outside diameter d 1 of first flap 12 is less than or equal to baffle plate 11 inner diameter d 2 as shown in Figure 4; And as shown in Figure 3, second flap, 14 inner diameter d 3 are set to the outside diameter d 1 corresponding to first flap 12.

This be for by after the mould chatted prevent to produce undercut (UnderCut) phenomenon when making turbofan 10 moulding, thereby be easy to make turbofan 10.And,, to be used for second flap 14 exhausting air is directed to the side, thereby can improves the air draft performance of turbofan 10 also in order to make second flap 14 be connected in the shell side of first flap 12 continuously.

The mould that baffle plate 11, first flap 12, blade 13 are shaped to one is made of first mould 20 and second mould 30 that mutually combine to one or separation as shown in Figure 4 and Figure 5.

First mould 20 has: the first front forming part 21 that is formed on central authorities for the moulding of first flap, 12 previous sections; With, form in the first front forming part, 21 shell side depressions for the moulding of baffle plate 11 previous sections, have a second face forming part 22 corresponding to baffle plate 11 front curve forms.

Second mould 30 has: the first flank forming part 31 that is formed on central authorities for the moulding of first flap, 12 aft section; With, for the moulding of baffle plate 11 aft section and a plurality of blade 13 from first flank forming part 31 shell side to the side-prominent a plurality of second flank forming parts 32 of first mould 20.Second flank forming part 32 when first mould 20 and second mould 30 are combined as a whole, enter to second face forming part 22 sides of first mould 20 and occupies each space between turbofan 10 each blade 13 as shown in Figure 5.And the internal diameter of second flank forming part 32 and external diameter are set to corresponding to the internal diameter of first mould, 20 second face forming parts 22 and the size of external diameter.

And, the outer periphery of the first front forming part 21 as shown in Figure 4, for the moulding of each blade 13 inner end 13b of also further prolonging inwards with respect to baffle plate 11 inner diameter d 2, two

moulds

20,30 in conjunction with and the direction of separating on a plurality of inboard blade forming grooves 24 of corresponding formation.This structure can make the inner end 13b moulding of blade 13 by inboard blade forming groove 24, thereby the length of blade 13 is increased, and can also make first flap 12 and blade 13 with the coupled condition moulding.

When utilizing this first mould 20 and second mould 30 to make turbofan 10 as shown in Figure 5, first mould 20 and second mould 30 are combined as a whole and within it portion form after the molding space, to molding space inner injection melting resin and moulding.When moulding like this, can produce the shaping thing that baffle plate 11, a plurality of blade 13 and first flap 12 are formed as one as shown in Figure 4.After the moulding, because the outside diameter d 1 of first flap 12 is less than or equal to the inner diameter d 2 of baffle plate 11, thereby does not produce undercut (Under Cut) phenomenon, so be easy to from

mould

20,30, separate shaping thing.

Be used for second flap, 14 forming mould as shown in Figure 6, constitute by top the 3rd mould 40 that comprises second flap, 14 molding spaces 41 and the 4th moulds 50 that are incorporated into below the 3rd mould 40.The moulding of second flap 14 by this

mould

40,50 is identical with aforesaid way.

By this way after the shaping thing and 14 moulding of second flap that will form as one by baffle plate 11, blade 13 and first flap 12 respectively, as shown in Figure 3, in ultrasonic wave welding mode second flap 14 is attached on the outer end 13a of first flap, 12 shell side blades 13.At this moment, the present invention is because the outside diameter d 1 of first flap 12 is identical with the inner diameter d 3 of second flap 14, thereby can be with second flap 14 welding correctly.And, since with second flap 14 mutually the blade 13 outboard end 13a of welding be shaped to the plane, thereby be easy to second flap 14 and blade 13 weldings, so can reduce the phenomenon of bad connection to greatest extent.

In sum, according to turbofan provided by the present invention since according to baffle plate, blade and First flap is shaped to the mode that second flap is attached to after the one the first flap shell side and makes, because of And has the effect that is easy to make.

In addition, the present invention compares with existing one-piece type turbofan, has further comprised to be attached to first Second flap of flap shell side, thereby have the effect that improves the air draft performance.

Add again, the present invention since mutually bonding second flap and blade tip be flat state, thereby easy Mutual bonding in realizing, not only can enhance productivity thus, but also can be to greatest extent Reduce the loose contact phenomenon in second flap and the blade bonding process.

Claims

1, a kind of turbofan is characterized in that comprising: be used to guide the baffle plate that sucks air; And first flap arranged opposed with described baffle plate, its central part is in conjunction with axle, and its external diameter is less than or equal to described baffle plate internal diameter; One end is connected in described baffle plate and the other end is connected in a plurality of blades of described first flap, and these a plurality of blades and described baffle plate and first flap are shaped to one; Be incorporated into second flap of the described blade of the described first flap shell side, its inner-diameter portion whose is connected in the described first flap outer radius portion.

2, turbofan according to claim 1 is characterized in that described second flap and described blade pass are crossed the ultrasonic wave welding and by bonding.

3, turbofan according to claim 2 is characterized in that the described blade tip that combines with described second flap is the plane.

4, a kind of manufacture method of turbofan is characterized in that comprising operation: will be used to guide the baffle plate that sucks air, first flap of combination axle and a plurality of blade plastic-blastings that two ends are incorporated into described baffle plate and described flap respectively to be shaped to one; Second flap plastic-blasting moulding separately of the described first flap shell side will be used for being incorporated into; Described second flap is attached to the described blade tip of the described first flap shell side.

5, the manufacture method of turbofan according to claim 4 is characterized in that described second flap is for passing through ultrasonic wave welding mode by bonding.

6, the manufacture method of turbofan according to claim 5, it is characterized in that the described blade tip that will combine with described second flap be shaped to carry out under the state on plane bonding.