CN103671268A - Air supply unit - Google Patents
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- CN103671268A CN103671268A CN201310079904.3A CN201310079904A CN103671268A CN 103671268 A CN103671268 A CN 103671268A CN 201310079904 A CN201310079904 A CN 201310079904A CN 103671268 A CN103671268 A CN 103671268A
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 9
- 238000007664 blowing Methods 0.000 claims description 27
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 230000003068 static effect Effects 0.000 description 22
- 230000000052 comparative effect Effects 0.000 description 21
- 230000000694 effects Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
An object of the invention is to provide an air supply unit with relatively short manufacturing time, low pressure loss and high efficiency. To achieve the above object, an air supply unit (1) provided by the invention comprises a frame body (3) and a centrifugal fan (5). The frame body (3) is provided with an air inlet (15) and an air outlet (17); and the centrifugal fan (5) us accommodated in the interior of the frame body (3). The width size (Wo) of the air outlet (17) disposed on the bottom surface of the frame body (3) is formed smaller than a distance (Wc1) of two opposite side surfaces (13, 13) among a plurality of side surfaces (13). A circular rectifying plate (7) is configured between the centrifugal fan (5) and the air outlet (17) in the interior of the frame body (3). An outer diameter of the circular rectifying plate (7) is larger than that (Df) of the centrifugal fan (5); and the peripheral edges form a circle.
Description
Technical field
The present invention relates to a kind of blowing unit.
Background technique
All the time, do not use the centrifugal blower (without spiral case blower fan) of shell, be used as the air-supply of air conditioner (following, to be called air conditioner) or cooling (please refer to for example patent documentation 1) of industrial machinery.Air conditioner shown in this patent documentation 1 is heat pump type air conditioner, is that centrifugal blower is equipped in fan house, requires profile less.Therefore, have following problem: the space of fan house (blowing unit) is restricted, and can not fully guarantee the distance of blower fan and air outlet, efficiency is low.For head it off, near the pipeline connection port of the inwall of fan house, set conical surface guiding element.
Prior art document
Patent documentation
Patent documentation 1: TOHKEMY 2005-16791 communique
Summary of the invention
Invent problem to be solved
Yet this known air conditioner, is to design i.e. so-called customization according to the on-the-spot space of arranging of building mostly.Therefore, there is following problem: the size of fan house is also accompanied by the scene of setting and correspondingly changes, and must prepare respectively conical surface guiding element for each air conditioner, while causing worker, increases.In addition, need to further improve the pressure loss and efficiency etc.
Few while therefore, the invention provides a kind of worker, the pressure loss is low and efficient blowing unit.
The technological means of dealing with problems
Blowing unit of the present invention, possess: there is the framework that suction port and air outlet and sidepiece surrounded by a plurality of sides and the centrifugal blower that is contained in the inside of this framework, and, be arranged at the width dimensions of the air outlet on the bottom surface in aforementioned framework, form the spacing of a pair of side that is less than the subtend in aforementioned a plurality of side.Between the aforementioned centrifugal blower and air outlet of the inside of aforementioned framework, dispose current plate, the external diameter that described current plate has is greater than the external diameter of aforementioned centrifugal blower, and peripheral edge is formed circle.
The effect of invention
The width dimensions of aforementioned air outlet, owing to being less than the spacing of a pair of side of the subtend in aforementioned a plurality of side, therefore, in the inside of aforementioned framework, is formed with bight on the position intersecting in side and bottom surface.Therefore, the air blowing out from centrifugal blower, owing to colliding the bottom surface in bight along side, thereby forms eddy current, so the wind speed profile of the air of discharging from air outlet becomes unequal at each position along radially, causes the pressure loss to increase.
With respect to this, in the present invention, according to blowing unit of the present invention, owing to disposing current plate, therefore, the air-flow blowing out from centrifugal blower can be rectified, and compared to the situation that there is no current plate, eddy current diminishes.Therefore, the wind speed profile of the air of discharging from air outlet, become equalization, thereby the pressure loss diminishes at each position along radially.In addition, due to current plate being only set, therefore, also less during worker.
Accompanying drawing explanation
Fig. 1 means the stereogram of the blowing unit of first embodiment of the invention, has wherein omitted the sidewall that forms the nearside of framework.
Fig. 2 means the centrifugal blower of Fig. 1 and the stereogram of discoideus current plate.
Fig. 3 means according to the stereogram of the discoideus current plate of the first mode of execution.
Fig. 4 means according to the stereogram of the circular current plate of the second mode of execution.
Fig. 5 means according to the stereogram of the circular cone shape current plate of the 3rd mode of execution.
Fig. 6 means according to the skeleton diagram of the air-flow in the first embodiment's framework.
Fig. 7 means according to the skeleton diagram of the air-flow in the second embodiment's framework.
Fig. 8 means according to the skeleton diagram of the air-flow in the 3rd embodiment's framework.
Fig. 9 means according to the skeleton diagram of the air-flow in the framework of comparative example.
Figure 10 is for the inventive example and comparative example, represents the chart of the relation of air quantity and static pressure.
Figure 11 is for the inventive example and comparative example, represents the chart of the relation of air quantity and static pressure efficiency.
Figure 12 is for the inventive example and comparative example, represents the chart of the relation of air quantity and static pressure, wherein the internal diameter of circular current plate and external diameter has been done to various variations.
Figure 13 is for the inventive example and comparative example, represents the chart of the relation of air quantity and static pressure efficiency, wherein the internal diameter of circular current plate and external diameter has been done to various variations.
Figure 14 is for the inventive example and comparative example, represents the chart of the relation of air quantity and static pressure, wherein the external diameter of circular current plate has been done to various variations.
Figure 15 is for the inventive example and comparative example, represents the chart of the relation of air quantity and static pressure efficiency, wherein the external diameter of circular current plate has been done to various variations.
Figure 16 (a) means the stereogram of the size of centrifugal blower and circular cone shape current plate.
Figure 16 (b) is for the inventive example and comparative example, represents the chart of the relation of air quantity and static pressure.
Figure 17 is for the inventive example and comparative example, represents the chart of the relation of air quantity and static pressure efficiency.
[explanation of parts conventional letter]
1 blowing unit
3 frameworks
5 centrifugal blowers
7 discoideus current plates (current plate)
13 sides
15 suction ports
17 air outlets
41 circular current plates (current plate)
51 circular cone shape current plates (current plate)
53 sides
Embodiment
Below, with reference to accompanying drawing, explain embodiments of the present invention.
The first mode of execution
As shown in Figure 1, the blowing unit 1 of first embodiment of the invention, possesses framework 3, centrifugal blower 5 and discoideus current plate 7(current plate).
Herein, the size of end face 9 is set to, and horizontal width dimensions is Wc1, and the depth of fore-and-aft direction is of a size of Wc2.Therefore, on left and right directions, the spacing of a pair of side 13,13 of subtend is also set to Wc1.Wc1 is preferably for example 1134mm, and Wc2 is preferably for example 1134mm.In addition, the height of side 13 is set to Hc, and Hc is preferably for example 850mm.The width dimensions Wo of aforementioned air outlet 17 is preferably for example 630mm.And the width dimensions Wo of air outlet 17, is set to the spacing Wc1 that is less than side 13,13.
As shown in Figure 1 and Figure 2, aforementioned centrifugal blower 5 possesses: mainboard 21, and it is configured in downside, and is discoid; Side plate 25, it is from this mainboard 21 towards top and reserve the subtend configuration of specific interval ground, and central authorities have intakeport 23; And blade 27, its between these mainboards 21 and side plate 25 along circumferencial direction and separate specific interval and dispose a plurality of.These mainboards 21, side plate 25 and blade 27 are all that steel plate or aluminium sheet is compressing and form, and then utilize respectively welding or riveted joint etc. to be combined as a whole.In addition, material is not limited to steel plate or aluminium, can be also resin etc.Centrifugal blower 5 rotates by being disposed at the motor 29 of downside, and thus, air A is blown from the sidepiece of centrifugal blower 5.In addition, motor 29 is supported by framework 3.
As shown in Figure 2, the external diameter of side plate 25 (external diameter of centrifugal blower 5) is set to Df, and the internal diameter of side plate 25 is set to df.In addition, the height of centrifugal blower 5 is set to Hf.Aforementioned Df is preferably for example 630mm, and df is preferably 440mm, and Hf is preferably 260mm.
In the inside of aforementioned framework 3, between aforementioned centrifugal blower 5 and air outlet 17, dispose discoideus current plate 7(current plate), the external diameter that described discoideus current plate 7 has is greater than the external diameter of aforementioned centrifugal blower 5, and peripheral edge is formed circle.In addition, the beeline between the peripheral edge portion of discoideus current plate 7 and side 13, can come suitably to be determined according to the air output of centrifugal blower 5.In addition, about circular current plate described later, circular cone shape current plate, also use the same method and decide.The above-below direction distance of the lower end of centrifugal blower 5 and discoideus current plate 7 is h, and this h is preferably for example 50mm.
As shown in Figure 3, aforementioned discoideus current plate 7(current plate) be the plectane that external diameter is set to Dpa, this outer diameter D pa forms the outer diameter D f that is greater than centrifugal blower 5.Specifically, the outer diameter D pa of discoideus current plate 7, be set to centrifugal blower 5 outer diameter D f 150～170%.That is, Dpa=1.5Df～1.7Df.In addition, discoideus current plate 7 is not shown by four supporting foot 31(parts) be supported on the side 13 of framework 3.In addition, in the present embodiment, the material of discoideus current plate 7 is steel plate, can be also resin etc.
In thering is the blowing unit 1 of aforementioned formation, air A is imported into from the suction port 15 being formed at the end face 9 of framework 3, this air A enters centrifugal blower 5 from intakeport 23, and be discharged to sidepiece along the blade 27 rotating, then, from the sidepiece of the peripheral edge of discoideus current plate 7 around to downside, and from being formed at 17 flow ipes 19 of 11Shang air outlet, bottom surface.
The second mode of execution
And then, the second mode of execution is described, about the structure identical with aforementioned the first mode of execution, description thereof is omitted.
In the second mode of execution, for the blowing unit 1 of the first mode of execution illustrated in fig. 1, set circular current plate 41(current plate), replace discoideus current plate 7.The position that configures circular current plate 41 is identical with the first mode of execution.
As shown in Figure 4, aforementioned circular current plate 41 is formed planar, and external diameter is set to Dpb and internal diameter is set to dpb.The plan view of peripheral edge and inner periphery all forms circle, and circular current plate 41 center is consistent with the central shaft of centrifugal blower 5.So, circular current plate 41 is formed planar, and described planar is that the middle body at plectane is formed with circular hole 41a.
In addition, the outer diameter D pb of aforementioned circular current plate 41, is formed to be larger than the outer diameter D f of centrifugal blower 5.Specifically, the outer diameter D pb of circular current plate 41, be set to centrifugal blower 5 outer diameter D f 150～170%.That is, Dpb=1.5Df～1.7Df.
And, the size difference (Dpb-dpb) of the outer diameter D pb of circular current plate 41 and inner diameter d pb, be set to centrifugal blower 5 outer diameter D f 20～60%.Specifically, (Dpb-dpb)=0.2Df～0.6Df.
The 3rd mode of execution
And then, the 3rd mode of execution is described, omit about the explanation with aforementioned the first mode of execution, structure that the second mode of execution is identical.
In the 3rd mode of execution, for the blowing unit 1 of the first mode of execution illustrated in fig. 1, set circular cone shape current plate 51(current plate), replace discoideus current plate 7.The position of configuration circular cone shape current plate 51 is identical with the first mode of execution.
As shown in Figure 5, aforementioned circular cone shape current plate 51 forms, and at middle body, is formed with circular hole 51a, and side 53 is from central authorities' truncated cone shape that the downstream side of Zhou Bingxiang air-flow (downside of Fig. 5) tilts outward simultaneously.External diameter is set to Dpc, and internal diameter is set to dpc.In addition, observe from the side, the folded tiltangleθ of side 53 and horizontal plane is preferably 0 °～20 °.
In addition, the outer diameter D pc of aforementioned circular cone shape current plate 51, forms the outer diameter D f that is greater than centrifugal blower 5.Specifically, the outer diameter D pc of circular cone shape current plate 51, be set to centrifugal blower 5 outer diameter D f 150～170%.That is, Dpc=1.5Df～1.7Df.
Embodiment
And then, by embodiment, the present invention is described in further detail.
(the first embodiment)
First, as shown in Figure 6, corresponding with aforementioned the first mode of execution, below centrifugal blower 5, configure discoideus current plate 7, and the air-flow in framework 3 is now simulated.The sidepiece of framework 3 is surrounded by side 13, and 11 middle body is formed with air outlet 17 in bottom surface.The size of air outlet 17 forms the standoff distance between a pair of side 13,13 that is less than subtend.In addition, on the bottom of framework 3, be formed with bight 14, the bottom of 14Shi You side, described bight 13 and the outer peripheral portion of bottom surface 11 define and form.
Simulation softward is used the Fluent(TM trade mark of ANSYS company (ANSYS Japan K.K.)), and air quantity is set as 14000m
3/ h.A plurality of arrows represent size and the direction of the air-flow of the air A in each position in framework 3, and bullet means the position of measuring point, and the length of arrow represents the size of wind speed, the direction of the direction indication air-flow of arrow.
Air A blows out to sidepiece from centrifugal blower 5, and then, from the outer circumferential side of discoideus current plate 7, around to below, and the position surrounding in the 13Ji bottom surface, side 11 by discoideus current plate 7, framework 3, forms weak eddy current 61,63.That is,, compared to the comparative example of Fig. 9 described later, the flow velocity of the air A of formation eddy current 61,63 is less.What represent due to Fig. 6 is section, therefore appear to and in left and right, produce a pair of eddy current 61,63, but aforementioned eddy current the 61, the 63rd is formed integrally as circular along circumferencial direction.And, in the air outlet 17 of bottom surface 11, at each position along width direction and with almost impartial interval, blow out the air A of roughly the same direction and same size.So, the wind speed profile in air outlet 17 becomes well, and the pressure loss diminishes.
(the second embodiment)
Secondly, as shown in Figure 7, corresponding with aforementioned the second mode of execution, below centrifugal blower 5, configure circular current plate 41, and the air-flow of the air A in framework 3 is now simulated.Simulated conditions are identical with the first embodiment.
Air A blows out to sidepiece from centrifugal blower 5, and then, from the outer circumferential side of circular current plate 41, around to below, and the position surrounding in the 13Ji bottom surface, side 11 by circular current plate 41, framework 3, forms weak eddy current 65,67.In addition, air A flows downwards from the hole of the middle body of circular current plate 41.Herein, because the air-flow of the inner circumferential side of eddy current 65,67 is towards top, from the hole of the middle body of circular current plate 41, downward, therefore, the two offsets each other for mobile air-flow, causes the size of eddy current 65,67 to be less than the first embodiment's eddy current 61,63.And 11 17 places, air outlet in bottom surface, in the large scope of middle body radially, with almost impartial interval, blow out the air A of roughly the same direction and same size.So, compared to the first embodiment, it is more good that the wind speed profile in air outlet 17 becomes, and the pressure loss diminishes.
(the 3rd embodiment)
Secondly, as shown in Figure 8, corresponding with aforementioned the 3rd mode of execution, below centrifugal blower 5, configure circular cone shape current plate 51, the air-flow of the air A in framework 3 is now simulated.Simulated conditions are identical with the first embodiment and the second embodiment.
Air A blows out to sidepiece from centrifugal blower 5, and then, from the outer circumferential side of circular cone shape current plate 51, around to below, and the position surrounding in the 13Ji bottom surface, side 11 by circular cone shape current plate 51, framework 3, forms weak eddy current 69,71.And, in the air outlet 17 of bottom surface 11, in the large scope of middle body radially, with almost impartial interval, blow out the air A of roughly the same direction and same size.So, compared to the first embodiment and the second embodiment, it is more good that the wind speed profile in air outlet 17 becomes, and the pressure loss also diminishes.
(comparative example)
Secondly, as shown in Figure 9, as a comparative example, below centrifugal blower 5, do not configure current plate, and the air-flow of the air A in framework 3 is now simulated.Simulated conditions are identical with the first embodiment to the three embodiments.
Air A blows out to sidepiece from centrifugal blower 5, and then, the position surrounding in the 13Ji bottom surface, side 11 by centrifugal blower 5, framework 3, forms and to be greater than aforementioned the first embodiment to the three embodiments and wind speed eddy current 73,75 faster.And, in the air outlet 17 of bottom surface 11, at central part office wind speed radially, diminish, at the outside of width direction wind speed, become large.So, compared to the first embodiment to the three embodiments, the wind speed profile in air outlet 17 becomes unequal, causes the pressure loss to become large.In addition, can confirm to produce the king-sized position 77 of wind speed near the lower right of centrifugal blower 5, thereby can infer at this position and produced the pressure loss.
The relation of static pressure and static pressure efficiency and air quantity
Below, use Figure 10 to Figure 17, the relation of static pressure and static pressure efficiency and air quantity is described.In addition, simulation softward is the Fluent that uses ANSYS company.
In Figure 10 and Figure 11, " current plate 1008 atresias " mean the situation (inventive example) of using the discoideus current plate that external diameter is 1008mm; " current plate 1008-750 is porose " means and uses external diameter for the situation of 1008mm and the internal diameter circular current plate (inventive example) that is 750mm.In addition, " comparative example (documents) " represents the situation of the conical surface guiding element of documents 1 cited in use aforementioned background art; " comparative example (without current plate) " represents not arrange the situation of current plate.As shown in Figure 10, Figure 11, can learn, in the scope of most air quantity, compared to comparative example, the present invention has shown higher static pressure and static pressure efficiency.
In Figure 12 and Figure 13, circular current plate (example of the present invention) and comparative example are compared.In addition, about the size of circular current plate, with respect to external diameter 1008mm, internal diameter varies is these three kinds of 625mm, 750mm and 875mm.In addition, with respect to external diameter 945mm, internal diameter varies is these three kinds of 625mm, 750mm and 875mm.As shown in Figure 12 and Figure 13, can learn, in the scope of most air quantity, compared to comparative example, the present invention has shown higher static pressure and static pressure efficiency.
In Figure 14 and Figure 15, circular current plate (example of the present invention) and comparative example are compared.In addition, about the size of circular current plate, with respect to internal diameter 750mm, external diameter is changed to these four kinds of 819mm, 882mm, 945mm, 1008mm.As shown in Figure 14, Figure 15, can learn, in the scope of most air quantity, with respect to comparative example, the present invention has shown higher static pressure and static pressure efficiency.
In Figure 16 and Figure 17, to circular cone shape current plate 51(example of the present invention) compare with comparative example.In addition, as shown in Figure 16 (a), circular cone shape current plate 51 is configured in only 50mm place of centrifugal blower 5 downsides.About the size of circular cone shape current plate 51, making external diameter is that 1008mm and internal diameter are 750mm.In addition, the tilt angle varied of side 53 be 0 ° (without tilt), 10 °, 20 °.As shown in Figure 16 (b), Figure 17, can learn, in the scope of most air quantity, compared to comparative example, the present invention has shown higher static pressure and static pressure efficiency.
In addition, although the present invention is illustrated for example in aforementioned embodiments, but because the size of the various piece of this blowing unit 1 demonstrates similar characteristic in the blowing unit of similar shape, and according to the scaling rule of gas fan, also can calculate the value of static pressure, static pressure efficiency and air quantity, therefore, be not limited to this mode of execution, within not departing from the scope of main idea of the present invention, can do various changes.
And then, the action effect of present embodiment is described.
(1) according to the blowing unit 1 of present embodiment, possess: framework 3, it has suction port 15 and air outlet 17, and sidepiece is surrounded by a plurality of sides 13; And centrifugal blower 5, it is accommodated in the inside of this framework 3; And, be arranged at the width dimensions Wo of the 11Shang air outlet, bottom surface 17 in aforementioned framework 3, form the spacing Wc1 of a pair of side 13,13 that is less than the subtend in aforementioned a plurality of side 13.Between the aforementioned centrifugal blower 5 and air outlet 17 of the inside of aforementioned framework 3, dispose current plate (discoideus current plate 7, circular current plate 41 and circular cone shape current plate 51), the external diameter that described current plate has is greater than the outer diameter D f of aforementioned centrifugal blower 5, and peripheral edge is formed circle.
Because the width dimensions Wo of aforementioned air outlet 17 is less than the spacing Wc1 of a pair of side 13,13 of the subtend in aforementioned a plurality of side 13, therefore, in the inside of aforementioned framework 3, on the position intersecting in 13Yu bottom surface, side 11, be formed with bight 14.Therefore, due to the air A blowing out from centrifugal blower 5 along side 13 bottom surfaces 11 of colliding bight 14, thereby form eddy current, therefore, the wind speed profile of the 17 air A that discharge from air outlet, becomes unequally at each position along radially, cause the pressure loss to increase.
With respect to this, in the present invention, owing to disposing current plate 7, current plate 41 and current plate 51, therefore, the air-flow of the air A blowing out from centrifugal blower 5 can be rectified, and compared to the situation that there is no current plate, eddy current diminishes.Therefore, from air outlet, the wind speed profile of the 17 air A that discharge, become equalization, thereby the pressure loss diminishes at each position along radially.
(2) aforementioned current plate is the discoideus current plate 7 that forms plectane.So, because the shape of current plate is very simple, so also less during worker.
(3) aforementioned current plate is circular current plate 41, and described circular current plate 41 is formed with circular hole 41a at the middle body of plectane.So, because the shape of current plate is very simple, so also less during worker.In addition, as described in aforementioned the second embodiment, because the air-flow of the inner circumferential side of eddy current 65,67 is towards top, from the mobile air-flow of the hole 41a of the middle body of circular current plate 41 downward, therefore, the two offsets each other, thereby the size of eddy current 65,67 becomes less.
(4) aforementioned current plate forms, and at middle body, is formed with circular hole 51a, and simultaneously side 53 is along with from central authorities' circular cone shape current plate 51 that the downstream side of Zhou Erxiang air-flow tilts outward.Therefore, because the air A blowing out from centrifugal blower 5 flows obliquely along the side 53 tilting, and flow to downstream side from the hole 51a of middle body, therefore, it is less that eddy current becomes.
(5) external diameter of aforementioned current plate (Dpa, Dpb, Dpc) be set to centrifugal blower 5 outer diameter D f 150～170%.When less than 150%, the external diameter of current plate is too small, thereby causes current plate to diminish to the rectification effect of air A.In addition, when being greater than 170%, the external diameter of current plate is excessive, thereby causes the gap of side 13 of current plate and framework 3 too small, and the flow velocity that flow to the air A of downstream side from this gap becomes large, causes the pressure loss to become large, and performance reduces.
(6) difference in size (Dpb-dpb) of the outer diameter D pb of aforementioned circular current plate 41 and inner diameter d pb, be set to centrifugal blower 5 outer diameter D f 20～60%.When the outer diameter D f of the not enough centrifugal blower 5 of difference in size (Dpb-dpb) of circular current plate 41 20% time, because the area of rectification on circular current plate 41 is too small, therefore, rectification effect is insufficient.In addition, when being greater than 60%, because the amount of the air A in the hole by central is very few, the effect that reduces eddy current is less, thereby not preferred.
(7) tiltangleθ of the side 53 of aforementioned circular cone shape current plate 51, when observing from the side, is set to 0～20 °.When tiltangleθ is greater than 20 °, side 53 too approaches Vertical direction, causes the rectification effect of air A less.
Claims (7)
1. a blowing unit, it possesses: have the framework that suction port and air outlet and sidepiece surrounded by a plurality of sides and the centrifugal blower that is accommodated in the inside of this framework, and, be arranged at the width dimensions of the air outlet on the bottom surface in aforementioned framework, be formed to be less than the spacing of a pair of side of the subtend in aforementioned a plurality of side
It is characterized in that,
Between the aforementioned centrifugal blower and air outlet of the inside of aforementioned framework, dispose current plate, the external diameter that described current plate has is greater than the external diameter of aforementioned centrifugal blower, and peripheral edge forms circle.
2. blowing unit as claimed in claim 1, is characterized in that, aforementioned current plate forms the discoideus current plate of plectane.
3. blowing unit as claimed in claim 1, is characterized in that, aforementioned current plate is circular current plate, and described circular current plate is that the middle body at plectane is formed with circular hole.
4. blowing unit as claimed in claim 1, it is characterized in that, aforementioned current plate is circular cone shape current plate, and described circular cone shape current plate is to be formed with circular hole at middle body, and form truncated cone shape, side along with from central authorities outward the downstream side of Zhou Erxiang air-flow tilt.
5. the blowing unit as described in any one in claim 1～4, is characterized in that, the external diameter of aforementioned current plate be set to centrifugal blower external diameter 150～170%.
6. blowing unit as claimed in claim 3, is characterized in that, the external diameter of aforementioned circular current plate and the size difference of internal diameter, be set to centrifugal blower external diameter 20～60%.
7. blowing unit as claimed in claim 4, is characterized in that, while observing from the side, the tilt angle of the side of aforementioned circular cone shape current plate, is set to 0～20 °.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012-189669 | 2012-08-30 | ||
| JP2012189669A JP6078269B2 (en) | 2012-08-30 | 2012-08-30 | Blower unit |
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| Publication Number | Publication Date |
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| CN103671268A true CN103671268A (en) | 2014-03-26 |
| CN103671268B CN103671268B (en) | 2017-12-22 |
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| CN201310079904.3A Active CN103671268B (en) | 2012-08-30 | 2013-03-13 | Blowing unit |
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| JP (1) | JP6078269B2 (en) |
| CN (1) | CN103671268B (en) |
| TW (1) | TWI636193B (en) |
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| WO2016127660A1 (en) * | 2015-02-10 | 2016-08-18 | 南通大通宝富风机有限公司 | Centrifugal fan cast-steel volute structure having straightening ring |
| CN108019363A (en) * | 2018-01-11 | 2018-05-11 | 广东美的厨房电器制造有限公司 | Blower fan apparatus and smoke machine |
| CN108700091A (en) * | 2016-02-22 | 2018-10-23 | 株式会社荏原制作所 | Fan assembly |
| CN111412611A (en) * | 2020-03-31 | 2020-07-14 | 广东美的制冷设备有限公司 | Vortex ring generation method based on air conditioner, storage medium and device |
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| JP6419256B1 (en) * | 2017-04-28 | 2018-11-07 | 株式会社 後島精工 | Inert gas flow system for bonding equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2016127660A1 (en) * | 2015-02-10 | 2016-08-18 | 南通大通宝富风机有限公司 | Centrifugal fan cast-steel volute structure having straightening ring |
| CN108700091A (en) * | 2016-02-22 | 2018-10-23 | 株式会社荏原制作所 | Fan assembly |
| CN108700091B (en) * | 2016-02-22 | 2020-06-12 | 株式会社荏原制作所 | Fan device |
| CN108019363A (en) * | 2018-01-11 | 2018-05-11 | 广东美的厨房电器制造有限公司 | Blower fan apparatus and smoke machine |
| CN108019363B (en) * | 2018-01-11 | 2024-02-20 | 广东美的厨房电器制造有限公司 | Fan device and smoke machine |
| CN111412611A (en) * | 2020-03-31 | 2020-07-14 | 广东美的制冷设备有限公司 | Vortex ring generation method based on air conditioner, storage medium and device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6078269B2 (en) | 2017-02-08 |
| TW201408890A (en) | 2014-03-01 |
| CN103671268B (en) | 2017-12-22 |
| TWI636193B (en) | 2018-09-21 |
| JP2014047659A (en) | 2014-03-17 |
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