CN101755130B - Dual reversal-rotating type axial blower - Google Patents
Dual reversal-rotating type axial blower Download PDFInfo
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- CN101755130B CN101755130B CN2008800242361A CN200880024236A CN101755130B CN 101755130 B CN101755130 B CN 101755130B CN 2008800242361 A CN2008800242361 A CN 2008800242361A CN 200880024236 A CN200880024236 A CN 200880024236A CN 101755130 B CN101755130 B CN 101755130B
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- supporting frame
- housing
- motor
- tunnel
- shock absorber
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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
- F04D19/00—Axial-flow pumps
- F04D19/007—Axial-flow pumps multistage fans
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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
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/64—Mounting; Assembling; Disassembling of axial pumps
- F04D29/644—Mounting; Assembling; Disassembling of axial pumps especially adapted for elastic fluid pumps
- F04D29/646—Mounting or removal of fans
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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
- F04D29/66—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
- F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
Abstract
The invention provides a dual reversal-rotating type axial blower, which can reduce the occurrence of vibrations more than the prior art in the revolving speed range over a wide high-speed region. A disc-shaped shock absorber (71) is arranged between the disc portion (23b) of a first support frame body half (23) and the disc portion (53b) of a second support frame body half (53). The shock absorber (71) is arranged in such a compressed state that hooks portions (49) constituting a plurality of engaging portions and hole portions (19e) constituting a plurality of engaged portions engage completely with each other.
Description
Technical field
The present invention relates to the employed dual reversal-rotating type axial blowers such as cooling of inside electric appliance.
Background technique
In TOHKEMY 2004-278370 communique (patent documentation 1) and U. S. Patent No. 7156611 (patent documentation 2), disclose the dual reversal-rotating type axial blower that possesses housing; This housing possesses: housing body; It has wind-tunnel in inside, and this wind-tunnel has suction port and has exhaust port the opposing party of axial direction a side of axial direction; The motor supporting frame, it is configured in the central part of wind-tunnel.In this dual reversal-rotating type axial blower, dispose first impeller in motor supporting frame in housing and first space between the suction port through the rotation of first motor.And, dispose second impeller in motor supporting frame in housing and second space between the exhaust port through the rotation of second motor.First impeller rotates to the opposite direction with second impeller.In this dual reversal-rotating type axial blower, housing is cut apart housing unit by first and second that connects through combined structure and is constituted.First cuts apart housing unit has: possess first housing body, half one of the first tubular wind-tunnel, half one, this first tubular wind-tunnel, half one has the major component in first space in inside; The imaginary benchmark parting plane that radially extends of edge and axial direction quadrature is divided into two-part with the motor supporting frame and first supporting frame, half one that obtains.Second cuts apart housing unit has: possess second housing body, half one of the second tubular wind-tunnel, half one, this second tubular wind-tunnel, half one has the major component in second space in inside; The motor supporting frame is divided into two-part and second supporting frame, half one that obtains along imaginary benchmark parting plane.
Patent documentation 1: TOHKEMY 2004-278370 communique
Patent documentation 2: No. 7156611 communique of U. S. Patent
But, in existing dual reversal-rotating type axial blower,, a plurality of vibrations then occur and become big vibration increase zone (resonance zone) if increase the rotational speed of first and second motor.Especially, if the use rotational speed of dual reversal-rotating type axial blower is set in this vibration increase zone, the vibration that then produces from dual reversal-rotating type axial blower becomes big, and noise increases as a result.
Summary of the invention
The objective of the invention is to, a kind of dual reversal-rotating type axial blower that in rotational velocity range widely, compared with prior art can reduce generation of vibration is provided.
Dual reversal-rotating type axial blower of the present invention possesses: housing, first impeller and first motor, second impeller and second motor.Housing possesses: housing body, and it has wind-tunnel in inside, and this wind-tunnel has suction port and has exhaust port the opposing party of axial direction a side of axial direction; The motor supporting frame, it is configured in the central part of wind-tunnel.First impeller is configured in the motor supporting frame and first space between the suction port in the housing, and has many pieces of blades.First motor possesses first running shaft of fixing first impeller, and first impeller is rotated to first sense of rotation in first space.Second impeller is configured in the motor supporting frame and second space between the exhaust port in the housing, and has many pieces of blades.Second motor possesses second running shaft of fixing second impeller, and second impeller is rotated to second sense of rotation opposite with first sense of rotation in second space.
The motor supporting frame possesses: the supporting frame main body, and it is positioned at the central part of wind-tunnel; Many disc, they are configured between supporting frame main body and the housing body along the circumferentially spaced predetermined distance of running shaft, and connect supporting frame main body and housing body.
Housing is cut apart housing unit by first and second that utilizes that mechanical combined structure connects and is constituted; First cuts apart housing unit comprises: possess first housing body, half one of the first tubular wind-tunnel, half one, this first tubular wind-tunnel, half one at one end has suction port and has the major component in first space in inside; The parting plane that radially extends of edge and axial direction quadrature is divided into two-part with the motor supporting frame and first supporting frame, half one that obtains.And second cuts apart housing unit has: possess second housing body, half one of the second tubular wind-tunnel, half one, this second tubular wind-tunnel, half one at one end has exhaust port and has the major component in second space in inside; The motor supporting frame is divided into two-part and second supporting frame, half one that obtains along parting plane.
The combined structure that adopts in the present invention comprises: integrally formed and along a plurality of engagement portions of circumferentially spaced arranged spaced with first housing body, half one; Integrally formed with second housing body, half one and along a plurality of portions that are stuck that engage with a plurality of engagement portions of circumferentially spaced arranged spaced.Combined structure, first and second cuts apart housing unit and constitutes, and under a plurality of engagement portions and state that a plurality of portions of being stuck engage fully, first supporting frame, half one contacts with the opposing side separately of second supporting frame, half one is whole.In the present invention, during " the whole contact of opposing side " expression microscopic observation, opposing side contacts through a plurality of points.
In the present invention, especially, between first supporting frame, half one and second supporting frame, half one, dispose soft shock absorber, this soft shock absorber becomes compressive state under a plurality of engagement portions and state that a plurality of portions of being stuck engage fully.In the present invention, as soft shock absorber, use the soft shock absorber that disperses to have a plurality of separated foams in inside.At this, separated foam can be independent bubble, also can be that a plurality of bubbles link to each other and the big separated foam of formation.If use such shock absorber, then can be, spread all over the increase that speed range integrity ground widely reduces vibration from the low scope of rotational speed to the high scope of rotational speed.As the soft shock absorber that disperses to have a plurality of separated foams in inside, specifically, preferred acrylic acid foam sponge sheet.When using the acrylic acid foam sponge sheet as soft shock absorber, more than the preferred 0.4mm of the thickness of acrylic acid foam sponge sheet～below the 0.8mm.In addition, the thickness of acrylic acid foam sponge sheet is during less than 0.4mm, because the thickness size of shock absorber self is little, therefore can't obtain sufficient shock absorption.And, when the thickness of acrylic acid foam sponge sheet surpasses 0.8mm, the gap that must between first supporting frame, half one and second supporting frame, half one, be provided for disposing the acrylic acid foam sponge sheet in addition.Can make the resonant frequency of vibration produce displacement but such gap is set, make the method for dealing with vibration complicated, therefore not preferred.
The specific soft shock absorber that uses among the present invention plays the function of the vibration that minimizing produces between first supporting frame, half one and second supporting frame, half one.Its result, according to the present invention, compared with prior art, can be from the low speed rotation zone to high speed rotating the zone, spread all over the increase that integrity ground in the rotational velocity range widely reduces vibration.
In addition, soft shock absorber also can be configured in to integrity between first supporting frame, half one and second supporting frame, half one.
In addition, first and second is cut apart housing unit and can be formed by the synthetic resin material, also can be formed by metallic material such as aluminium.
Description of drawings
Fig. 1 is decomposition half sectional drawing of the dual reversal-rotating type axial blower of mode of execution of the present invention.
Fig. 2 is the exploded perspective view of the dual reversal-rotating type axial blower of mode of execution of the present invention.
It is the figure that the result of the vibration measurement of carrying out in order to confirm effect of the present invention is shown that Fig. 3 (A) reaches (B).
It is the figure that the result of the vibration measurement of carrying out in order to confirm effect of the present invention is shown that Fig. 4 (A) reaches (B).
Fig. 5 is the figure that the detailed result of the vibration measurement of carrying out in order to confirm effect of the present invention is shown.
Embodiment
Below, with reference to description of drawings mode of execution of the present invention.Fig. 1 is half sectional drawing of state that decomposes the dual reversal-rotating type axial blower of mode of execution of the present invention.And Fig. 2 is the exploded perspective view of dual reversal-rotating type axial blower.Shown in said figure, this routine dual reversal-rotating type axial blower has housing 1, first motor 3, first impeller 5, second motor 7, second impeller 9.First impeller 5 be configured in the housing 1 after in the motor supporting frame (23,53) and first space S 1 between the suction port 11a stated, and have many pieces of blades 6.First motor 3 possesses first running shaft 4 of fixing first impeller 5, and first impeller 5 is rotated to first sense of rotation in first space S 1.Second impeller 9 is configured in the motor supporting frame (23,53) and second space S 2 between the exhaust port 13b in the housing 1, and has many pieces of blades 10.Second motor 7 possesses second running shaft 8 of fixing second impeller 9, and second impeller 9 is rotated to second sense of rotation opposite with first sense of rotation in second space S 2.
Constituting of housing 1, first cuts apart housing unit 11 and second cuts apart housing unit 13 and combines through combined structure.First cuts apart housing unit 11 is formed by the metallic material of synthetic resin material or aluminium etc.In addition, as shown in Figure 1, first cuts apart housing unit 11 one has first housing body, half one 15 and first supporting frame, half one 17.First housing body, half one 15 has first and second lip part 19 and 20, the first tubular wind-tunnel, half one 21.First lip part 19 has the first～four jiao of 19a～19d that circumferentially (is designated hereinafter simply as circumferentially) arrangement along running shaft 4, and this running shaft 4 is arranged on the common axis line A of first and second motor 3,7.And first lip part 19 have suction port 11a at the end of common axis line A.Four jiaos of first lip part 19 (be formed with four 19e of hole portion respectively on the first～four jiao of 19a～19d), the said hole 19e of portion respectively as and second cut apart the employed portion that is stuck when forming combined structure between the housing unit 13.The details of the shape of the said hole 19e of portion and after the details of hook portion 49 and the snap-fit relationship of the 19e of hole portion of the formation engagement portion stated because identical with the relation of hook portion with TOHKEMY 2004-278370 communique (No. the 7156611st, U. S. Patent) the hole portion of disclosed formation combined structure, therefore omission explanation.On second lip part 20, be formed with through hole 20a, this through hole 20a is inserted with dual reversal-rotating type axial blower is installed in the assembling set on the electrical equipment.Two ends in the first tubular wind-tunnel, half one 21 are formed with first and second lip part 19 and 20.This first tubular wind-tunnel half one 21 is along extending at the axial direction of the running shaft of arranging on the common axis line A 4,8 (below, abbreviate axial direction as).
First supporting frame, half one 17 has: the first supporting frame body halves 23 that is fixed with first motor 3; Three first disc half ones 25.The first supporting frame body halves 23 has: the 23b of plectane portion that has the opening portion 23a of tubular at central part; The surrounding wall portion 23c that extends to axial direction from the peripheral part of the 23b of this plectane portion.The chimeric metal clutch shaft bearing bearing 27 that constitutes by brass that is fixed with in opening portion 23a.And, dispose the substrate 29 of the stator of first motor 3 with the mode of stopping up the space that surrounds by 23b of plectane portion and surrounding wall portion 23c.Chimeric on bearing spider 27 have a stator core 33 that possesses a plurality of winding portion 31.
Three first disc half ones 25 between the inner peripheral surface of the surrounding wall portion 23c of the first supporting frame body halves 23 and first housing body, half one 15, and connect the first supporting frame body halves 23 and first housing body, half one 15 along the arranged spaced of circumferentially spaced regulation.
Be fixed with the cup part 35 impeller 5, that constitute by magnetic conductive material that supporting has many pieces of blades 6 at an end of running shaft 4.Interior perimembranous in cup part 35 is fixed with a plurality of permanent magnets 37.
Second cuts apart housing unit 13 is also formed by the metallic material of synthetic resin material or aluminium etc.As shown in Figure 1, second cuts apart housing unit 13 one has second housing body, half one 39 and second supporting frame, half one 41.Second housing body, half one 39 has first and second lip part 43 and 45, the second tubular wind-tunnel, half one 47.First lip part 43 has the first～four jiao of 43a～43d that circumferentially (is designated hereinafter simply as circumferentially) arrangement along running shaft 8, and this running shaft 8 is arranged on the common axis line A of first and second motor 3,7.Four jiaos of first lip part 43 (be formed with four hook portions 49 and four projections 51 respectively on the first～four jiao of 43a～43d), said hook portion 49 and projection 51 respectively as and first cut apart employed engagement portion when forming combined structure between the housing unit 11.The relation of the details of said hook portion 49 and projection 51 and the snap-fit relationship of the 19e of hole portion engaging and the hole portion of the disclosed formation combined structure of TOHKEMY 2004-278370 communique and hook portion is identical.Shown in TOHKEMY 2004-278370 communique (No. the 7156611st, U. S. Patent); If with after hook portion 49 and the 19e of hole portion a part of chimeric; Making second, to cut apart housing unit 13 be the angle of center rotation regulation with common axis line A, then projection 51 become be formed on first cut apart not shown on the end face of first lip part 19 of housing unit 11 by chimeric with the chimeric state of recess.Its result realizes that second cuts apart revolving of housing unit 13 and end, and through hook portion 49 is engaged with the edge portion on every side of the 19e of hole portion, prevents that second cuts apart housing unit 13 and cut apart housing unit 11 from first and depart to axial direction.On second lip part 45, be formed with through hole 45a, this through hole 45a is inserted with dual reversal-rotating type axial blower is installed in the assembling set on the electrical equipment.Two ends in the second tubular wind-tunnel, half one 47 are formed with first and second lip part 43 and 45.This second tubular wind-tunnel, half one 47 extends along axial direction (axial direction of the running shaft of on common axis line A, arranging 4,8).
Second supporting frame, half one 41 has: the second supporting frame body halves 53 that is fixed with second motor 7; Three second disc half ones 55.The second supporting frame body halves 53 has: the 53b of plectane portion that has the opening portion 53a of tubular at central part; The surrounding wall portion 53c that extends to axial direction from the peripheral part of the 53b of this plectane portion.Chimeric metal second bearing spider 57 that constitutes by brass that is fixed with in opening portion 53a.And, dispose the substrate 59 of the stator of second motor 7 with the mode of stopping up the space that surrounds by 53b of plectane portion and surrounding wall portion 53c.Chimeric on bearing spider 57 have a stator core 63 that possesses a plurality of winding portion 61.
Three second disc half ones 55 between the inner peripheral surface of the surrounding wall portion 53c of the second supporting frame body halves 53 and second housing body, half one 39, and connect the second supporting frame body halves 53 and second housing body, half one 39 along the arranged spaced of circumferentially spaced regulation.In addition, in three disc half ones 55, in disc half one, be formed with the groove 55A that lets lead get into.
Be fixed with the cup part 65 impeller 9, that constitute by magnetic conductive material that supporting has many pieces of blades 10 at an end of running shaft 8.Interior perimembranous in cup part 65 is fixed with a plurality of permanent magnets 67.
In addition, in this mode of execution, make up first and second supporting frame half one 17 and 41, constitute motor supporting frame (23,53).In other words, the edge is divided into motor supporting frame (23,53) two-part and constitutes first and second supporting frame half one 17 and 41 with the parting plane that radially extends of the axial direction quadrature of common axis line A extension.Through such structure; In this example; Combined structure, first and second cuts apart housing unit 11 and 13 and constitutes; Be stuck under the state that portion (four 19e of hole portion) engages fully with four in four engagement portions (four hook portions 49), first supporting frame, half one 17 contacts with the opposing side separately of second supporting frame, half one 41 is whole.
In this mode of execution; Between first supporting frame, half one 17 and second supporting frame, half one 41; Especially; Between the 53b of plectane portion of the 23b of plectane portion of the first supporting frame body halves 23 and the second supporting frame body halves 53, dispose the discoideus soft shock absorber 71 that disperses to have a plurality of separated foams in inside.Preferably can use the acrylic acid foam sponge sheet as soft shock absorber 71.Shock absorber 71 is configured to compressive state under four hook portions 49 that constitute a plurality of engagement portions and state that a plurality of four 19e of hole portion that are stuck portion of formation engage fully.The shock absorber 71 whole approximate equality ground under compressed state that disperses in inside to have a plurality of separated foams that becomes compressive state produces the recuperability that will return original state.This recuperability is the power along the direction that a plurality of engagement portions (four hook portions 49) are separated with a plurality of engagings that are stuck portion.Its result; A plurality of engagement portions (four hook portions 49) and a plurality of combination force grow that is stuck between the portion (the edge portion of the periphery of four 19e of hole portion); The generation that first and second cuts apart the big gap of the occurrence cause of the vibration of generation between housing unit 11 and 13 can be suppressed to become, thereby the vibration that produces can be actually reduced.And shock absorber 71 is absorbed in the vibration that produces between first supporting frame, half one 17 and second supporting frame, half one 41, plays the function that reduces this vibration.Its result according to the present invention, compared with prior art, can reduce the increase of vibration on integrity ground in the rotational velocity range widely.
In the above-described embodiment, soft shock absorber 71 only is configured between the 53b of plectane portion of the 23b of plectane portion and the second supporting frame body halves 53 of the first supporting frame body halves 23 and just can obtains good result.But, then can further improve vibration suppressioning effect if between first disc, half one 25 and second disc, half one 55, also dispose soft shock absorber.
Below, in order to confirm effect of the present invention, carry out the vibration measurement test.Fig. 3～Fig. 5 is the figure that the result of vibration measurement test is shown.In addition, in the vibration measurement test, measure the circumferential measuring point M1 vibration acceleration (m/s of (second cuts apart the part of first lip part 43 of housing unit 13 sides)
2) and the vibration acceleration (m/s of the measuring point M2 of the discharge oral-lateral of axial direction (first cuts apart the through hole 20a of second lip part 20 of housing unit 11 sides) near
2), as synthetic said vibration acceleration (m/s
2) the result, curve has drawn.At first, Fig. 3 (A) is the figure that the result of the relation of having measured rotational speed (with the rotational speed of second motor of high speed rotating) and vibrative vibration acceleration that claimant (Sanyo Electric Co., Ltd.) is applicable to the present invention the situation of the dual reversal-rotating type axial blower of selling with production code member 9CRA0412P5J03 and situation about not being suitable for is shown.In Fig. 3 (A), X represented to pack into the variation of vibration acceleration of dual reversal-rotating type axial blower (embodiment 1) of soft shock absorber 71, Y represent not pack into the variation of vibration acceleration of dual reversal-rotating type axial blower (comparative example 1) of shock absorber 71.The soft shock absorber that uses is the product that Sumitomo 3M Co., Ltd. sells with the title of production code member Y-4615.Can know from measurement result, in extensive rotary speed area, can suppress generation of vibration from low rotation speed area to high rotary speed area.
In addition; Fig. 3 (B) illustrates to have measured claimant (Sanyo Electric Co., Ltd.) in the dual reversal-rotating type axial blower of selling, and the present invention is applicable to result's the figure of relation of rotational speed (with the rotational speed of second motor of high speed rotating) and the vibrative vibration acceleration of the situation of the dual reversal-rotating type axial blower (production code member 9CRA0412P4J03) different with Fig. 3 (A) size and model and not suitable situation.In Fig. 3 (B), X represented to pack into the variation of vibration acceleration of dual reversal-rotating type axial blower (embodiment 2) of shock absorber 71, Y represent not pack into the variation of vibration acceleration of dual reversal-rotating type axial blower (comparative example 2) of shock absorber 71.The soft shock absorber that uses is identical with the situation of Fig. 3 (A).In this example, can know from measurement result, in rotary speed area widely, can suppress the big vibration that produces well from low rotation speed area to high rotary speed area.
Fig. 4 (A) illustrates to have measured result's the figure that the present invention is applicable to the relation of the situation of the dual reversal-rotating type axial blower that other manufactured beyond the claimant is sold and the rotational speed of situation about not being suitable for (with the rotational speed of second motor of high speed rotating) and vibrative vibration acceleration.In Fig. 4 (A), X represented to pack into the variation of vibration acceleration of dual reversal-rotating type axial blower (embodiment 3) of shock absorber 71, Y represent not pack into the variation of vibration acceleration of dual reversal-rotating type axial blower (comparative example 3) of shock absorber 71.The shock absorber that uses is identical with the situation of Fig. 3 (A).Can know from measurement result, in whole rotary speed area, can suppress generation of vibration in integrity ground.
Fig. 4 (B) is identical with Fig. 4 (A), also is to illustrate to have measured rotational speed (with the rotational speed of second motor of high speed rotating) and the result's of the relation of vibrative vibration acceleration the figure of situation and situation about not being suitable for that the present invention is applicable to the dual reversal-rotating type axial blower of other company.In Fig. 4 (B), X represented to pack into the variation of vibration acceleration of dual reversal-rotating type axial blower (embodiment 4) of shock absorber 71, Y represent not pack into the variation of vibration acceleration of dual reversal-rotating type axial blower (comparative example 4) of shock absorber 71.The shock absorber that uses is identical with the situation of Fig. 3 (A).Can know from measurement result, in whole rotary speed area, can suppress generation of vibration in integrity ground.
Owing to can know that from the result (Fig. 3 and Fig. 4) of above vibration measurement use can obtain preferred result as the acrylic acid bubble silk floss of the shock absorber of separated foam; Therefore can further confirm to steep the preferred thickness of continuous shock absorber, and confirm about the adaptability of the continuous material in addition of acrylic acid bubble as shock absorber as acrylic acid.Fig. 5 is illustrated in the dual reversal-rotating type axial blower identical with Fig. 3; Under the measuring condition identical with Fig. 3, measured the thickness that changes the acrylic acid foam sponge sheet situation, use the shock absorber of acrylic acid bubble beyond continuous situation, do not use shock absorber situation, replace shock absorber and rotational speed (with the rotational speed of second motor of high speed rotating) with the result's of the relation of vibrative vibration acceleration of the situation in gap figure be set.
In Fig. 5, " dotted line " expression is packed the acrylic acid foam sponge sheet of 0.4mm into as the variation of the vibration acceleration of the dual reversal-rotating type axial blower (embodiment 5) of soft shock absorber 71." dotted line " expression is packed the acrylic acid foam sponge sheet of 0.8mm into as the variation of the vibration acceleration of the dual reversal-rotating type axial blower (embodiment 6) of shock absorber 71.Do not pack into the variation of vibration acceleration of dual reversal-rotating type axial blower (comparative example 5) of shock absorber 71 of " heavy line " expression." thick dashed line " is illustrated in the variation of the vibration acceleration of the dual reversal-rotating type axial blower (comparative example 6) that the gap of 0.2mm is set between the first supporting frame body halves 23 and the second supporting frame body halves 53." solid line " expression is packed the aluminium flake of 0.46mm into as the variation of the vibration acceleration of the dual reversal-rotating type axial blower (comparative example 7) of shock absorber." dot and dash line " expression is packed the plastic sheet of 0.5mm into as the variation of the vibration acceleration of the dual reversal-rotating type axial blower (comparative example 8) of shock absorber.
As this measurement result, at first in not using the situation of shock absorber (comparative example 5), the point of resonance (peak value) of a plurality of vibration accelerations appears.Especially 14000 [rev/min] near high rotary speed area in found the peak value of very high vibration acceleration.And in the situation (comparative example 7) and the situation (comparative example 8) of use plastic sheet as shock absorber of using aluminium flake as shock absorber, the point of resonance of a plurality of vibration accelerations of high rotary speed area (peak value) reduces a little.But 14000 [rev/min] near high rotary speed area under the situation about comparing, though the point of resonance of vibration acceleration (peak value) does not use situation (comparative example 5) height of shock absorber 71, but still the residual peak value that has than higher vibration acceleration.
Relative therewith; Use of situation (embodiment 5) the not only peak value minimizing of a plurality of vibration accelerations in high rotary speed area of the acrylic acid foam sponge sheet of 0.4mm as shock absorber 71; And 14000 [rev/min] near; The peak value of the vibration acceleration during with the comparative example comparison reduces 40% with respect to the situation of not using shock absorber 71 (comparative example 5), reduces 30% with respect to the situation (comparative example 7,8) of using aluminium flake and plastic sheet as shock absorber 71.And; Use the continuous not only peak value minimizing of a plurality of vibration accelerations in high rotary speed area of situation (embodiment 6) of acrylic acid bubble of 0.8mm as shock absorber 71; And 14000 [rev/min] near; The peak value of the vibration acceleration during with the comparative example comparison reduces 60% with respect to the situation of not using shock absorber 71 (comparative example 5), reduces 50% with respect to the situation (comparative example 7,8) of using aluminium flake and plastic sheet as shock absorber 71.Even compare with the continuous situation (embodiment 5) of acrylic acid bubble of using 0.4mm, use the continuous situation (embodiment 6) of the acrylic acid bubble of 0.8mm 14000 [rev/min] near the peak value of vibration acceleration also reduce 30%.
In addition; Be provided with not using shock absorber under the situation (comparative example 6) in the gap of 0.2mm; 14000 [rev/min] near do not find the peak value that vibration acceleration is high, and 12000 [rev/min] near found the vibration acceleration high peak value higher than the peak-peak of the situation of not using shock absorber 71 (comparative example 5).And the number of the peak value higher than higher vibration acceleration increases than the situation of not using shock absorber 71 (comparative example 5).Can know from this result; When only the gap being set not disposing shock absorber; Peak-peak through making vibration acceleration moves (generation transfer phenomena) to low rotation speed area; Though can suppress the vibration of high rotary speed area, in rotary speed area widely, can't reduce generation of vibration from low rotation speed area to high rotary speed area.
Can know from above result; If the continuous thickness setting of the acrylic acid of will be as shock absorber 71 and using bubble is in the scope of 0.4mm～0.8mm; Then not only can be suppressed at the big vibration that produces in the high rotary speed area, and can reduce the increase of vibration on integrity ground in the speed range widely.In addition, the thickness of acrylic acid foam sponge sheet is during less than 0.4mm, because the thickness size of shock absorber self is little, therefore can't obtain required sufficient shock absorption.And, when the thickness of acrylic acid foam sponge sheet surpasses 0.8mm, need between first supporting frame, half one and second supporting frame, half one, be provided for disposing the gap of the acrylic acid foam sponge sheet of thicker in addition.If only the gap is set, the influence of above-mentioned transfer phenomena when the 0.2mm gap is set then appears, and therefore not preferred.
In addition; In above-mentioned mode of execution; Only configuration shock absorber 71 between the 53b of plectane portion of the 23b of plectane portion of the first supporting frame body halves 23 and the second supporting frame body halves 53 still, can certainly dispose shock absorber 71 between first disc, half one 25 and second disc, half one 55.
Utilizability on the industry
According to the present invention; Owing between first supporting frame, half one and second supporting frame, half one, dispose soft shock absorber; This soft shock absorber becomes compressive state under a plurality of engagement portions and state that a plurality of portions of being stuck engage fully; And disperse to have a plurality of separated foams in inside, therefore compared with prior art, can reduce the increase of vibration on integrity ground in the speed range widely.
Claims (6)
1. dual reversal-rotating type axial blower is characterized in that possessing:
Housing; It possesses housing body and motor supporting frame; This housing body has wind-tunnel in inside, and this wind-tunnel has suction port and has exhaust port the opposing party of said axial direction a side of axial direction, and this motor supporting frame is configured in the central part of said wind-tunnel;
First impeller, it is configured in the said motor supporting frame and first space between the said suction port in the said housing, and has many pieces of blades;
First motor, it possesses first running shaft of fixing said first impeller, and said first impeller is rotated to first sense of rotation in said first space;
Second impeller, it is configured in the said motor supporting frame and second space between the said exhaust port in the said housing, and has many pieces of blades;
Second motor, it possesses second running shaft of fixing said second impeller, and said second impeller is rotated to second sense of rotation opposite with said first sense of rotation in said second space,
Said motor supporting frame possesses: the supporting frame main body, and it is positioned at the central part of said wind-tunnel; Many disc, they are configured between said supporting frame main body and the said housing body along the circumferentially spaced predetermined distance of said running shaft, and connect said supporting frame main body and said housing body,
Said housing connect by utilizing the mechanical type combined structure first and second cut apart housing unit and constitute,
Said first cuts apart housing unit has: possess first housing body, half one of the first tubular wind-tunnel, half one, this first tubular wind-tunnel, half one at one end has said suction port and has the major component in said first space in inside; The parting plane that radially extends of edge and said axial direction quadrature is divided into two-part with said motor supporting frame and first supporting frame, half one that obtains,
Said second cuts apart housing unit has: possess second housing body, half one of the second tubular wind-tunnel, half one, this second tubular wind-tunnel, half one at one end has said exhaust port and has the major component in said second space in inside; Said motor supporting frame is divided into two-part and second supporting frame, half one that obtains along said parting plane,
Said combined structure comprises: with said first to cut apart said first housing body half one of housing unit integrally formed and along a plurality of engagement portions of said circumferentially spaced arranged spaced; With said second to cut apart said second housing body half one of housing unit integrally formed and along a plurality of portions that are stuck that engage with said a plurality of engagement portions of said circumferentially spaced arranged spaced,
Said combined structure, said first and second are cut apart housing unit and are constituted; Under said a plurality of engagement portions and state that said a plurality of portions of being stuck engage fully; The whole contact of opposing side separately of said first supporting frame half one and said second supporting frame half one
Said first supporting frame half one possesses: the first supporting frame body halves of fixing said first motor; A plurality of first disc half one,
Said second supporting frame half one possesses: the second supporting frame body halves of fixing said second motor; A plurality of second disc half one,
Between said first supporting frame body halves and the said second supporting frame body halves, dispose soft shock absorber; This soft shock absorber becomes compressive state under said a plurality of engagement portions and state that said a plurality of portions of being stuck engage fully; And disperse to have a plurality of separated foams in inside, this shock absorber will return original state and produce the recuperability that makes the direction that said a plurality of engagement portion separates with said a plurality of engagings that are stuck portion under compressed state.
2. dual reversal-rotating type axial blower is characterized in that possessing:
Housing; It possesses housing body and motor supporting frame; This housing body has wind-tunnel in inside, and this wind-tunnel has suction port and has exhaust port the opposing party of said axial direction a side of axial direction, and this motor supporting frame is configured in the central part of said wind-tunnel;
First impeller, it is configured in the said motor supporting frame and first space between the said suction port in the said housing, and has many pieces of blades;
First motor, it possesses first running shaft of fixing said first impeller, and said first impeller is rotated to first sense of rotation in said first space;
Second impeller, it is configured in the said motor supporting frame and second space between the said exhaust port in the said housing, and has many pieces of blades;
Second motor, it possesses second running shaft of fixing said second impeller, and said second impeller is rotated to second sense of rotation opposite with said first sense of rotation in said second space,
Said motor supporting frame possesses: the supporting frame main body, and it is positioned at the central part of said wind-tunnel; Many disc, they are configured between said supporting frame main body and the said housing body along the circumferentially spaced predetermined distance of said running shaft, and connect said supporting frame main body and said housing body,
Said housing connect by utilizing the mechanical type combined structure first and second cut apart housing unit and constitute,
Said first cuts apart housing unit has: possess first housing body, half one of the first tubular wind-tunnel, half one, this first tubular wind-tunnel, half one at one end has said suction port and has the major component in said first space in inside; The parting plane that radially extends of edge and said axial direction quadrature is divided into two-part with said motor supporting frame and first supporting frame, half one that obtains,
Said second cuts apart housing unit has: possess second housing body, half one of the second tubular wind-tunnel, half one, this second tubular wind-tunnel, half one at one end has said exhaust port and has the major component in said second space in inside; Said motor supporting frame is divided into two-part and second supporting frame, half one that obtains along said parting plane,
Said combined structure comprises: with said first to cut apart said first housing body half one of housing unit integrally formed and along a plurality of engagement portions of said circumferentially spaced arranged spaced; With said second to cut apart said second housing body half one of housing unit integrally formed and along a plurality of portions that are stuck that engage with said a plurality of engagement portions of said circumferentially spaced arranged spaced,
Said combined structure, said first and second are cut apart housing unit and are constituted; Under said a plurality of engagement portions and state that said a plurality of portions of being stuck engage fully; The whole contact of opposing side separately of said first supporting frame half one and said second supporting frame half one
Between said first supporting frame, half one and said second supporting frame half one, dispose soft shock absorber; This soft shock absorber becomes compressive state under said a plurality of engagement portions and state that said a plurality of portions of being stuck engage fully; And disperse to have a plurality of separated foams in inside, this shock absorber will return original state and produce the recuperability that makes the direction that said a plurality of engagement portion separates with said a plurality of engagings that are stuck portion under compressed state.
3. dual reversal-rotating type axial blower according to claim 2, wherein,
Said first supporting frame half one possesses the first supporting frame body halves of fixing said first motor,
Said second supporting frame half one possesses the second supporting frame body halves of fixing said second motor,
Said shock absorber is configured between said first supporting frame body halves and the said second supporting frame body halves.
4. dual reversal-rotating type axial blower according to claim 1 and 2, wherein,
Said first and second cut apart housing unit and formed by the synthetic resin material.
5. dual reversal-rotating type axial blower according to claim 1 and 2, wherein,
Said first and second cut apart housing unit and formed by aluminium.
6. dual reversal-rotating type axial blower according to claim 1 and 2, wherein,
Said shock absorber be thickness be 0.4mm above～acrylic acid foam sponge sheet below the 0.8mm.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007183756 | 2007-07-12 | ||
| JP183756/2007 | 2007-07-12 | ||
| PCT/JP2008/062312 WO2009008415A1 (en) | 2007-07-12 | 2008-07-08 | Dual reversal-rotating type axial blower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101755130A CN101755130A (en) | 2010-06-23 |
| CN101755130B true CN101755130B (en) | 2012-10-17 |
Family
ID=40228585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008800242361A Active CN101755130B (en) | 2007-07-12 | 2008-07-08 | Dual reversal-rotating type axial blower |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20100189544A1 (en) |
| EP (1) | EP2172655B1 (en) |
| JP (1) | JP5386353B2 (en) |
| CN (1) | CN101755130B (en) |
| TW (1) | TW200918760A (en) |
| WO (1) | WO2009008415A1 (en) |
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| MX343534B (en) | 2011-10-19 | 2016-11-09 | Mars Inc | Inhibitors of arginase and their therapeutic applications. |
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| CN104806545B (en) * | 2014-01-25 | 2017-05-10 | 深圳兴奇宏科技有限公司 | Serial fan combining method |
| WO2016044945A1 (en) * | 2014-09-25 | 2016-03-31 | Nuhn Industries Ltd. | Fluid pump with multiple pump heads |
| CN104454592A (en) * | 2014-11-28 | 2015-03-25 | 德清振达电气有限公司 | High-power axial fan |
| US9739291B2 (en) | 2015-04-13 | 2017-08-22 | Minebea Mitsumi Inc. | Cooling fan |
| KR20180021117A (en) | 2015-06-23 | 2018-02-28 | 칼리테라 바이오사이언시즈, 인코포레이티드 | Compositions and methods for inhibiting arginase activity |
| TWI775556B (en) | 2015-10-30 | 2022-08-21 | 美商卡利泰拉生物科技公司 | Compositions and methods for inhibiting arginase activity |
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| JP7119635B2 (en) * | 2018-06-22 | 2022-08-17 | 日本電産株式会社 | axial fan |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN101755130A (en) | 2010-06-23 |
| JP5386353B2 (en) | 2014-01-15 |
| EP2172655B1 (en) | 2018-10-24 |
| EP2172655A1 (en) | 2010-04-07 |
| WO2009008415A1 (en) | 2009-01-15 |
| TW200918760A (en) | 2009-05-01 |
| US20100189544A1 (en) | 2010-07-29 |
| EP2172655A4 (en) | 2017-04-05 |
| JPWO2009008415A1 (en) | 2010-09-09 |
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