CN205744602U - Vortex fan spiral case, vortex fan and air-conditioner - Google Patents
Vortex fan spiral case, vortex fan and air-conditioner Download PDFInfo
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- CN205744602U CN205744602U CN201620030940.XU CN201620030940U CN205744602U CN 205744602 U CN205744602 U CN 205744602U CN 201620030940 U CN201620030940 U CN 201620030940U CN 205744602 U CN205744602 U CN 205744602U
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- 230000009467 reduction Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 206010019233 Headaches Diseases 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 208000002173 dizziness Diseases 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 231100000869 headache Toxicity 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 206010025482 malaise Diseases 0.000 description 1
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Abstract
This utility model relates to noise reduction technology field, it is provided that a kind of vortex fan spiral case, includes the vortex fan of this vortex fan spiral case and includes the air-conditioner of this vortex fan.Toroidal cavity is left between multiple blades on the inwall in the shell chamber of this vortex fan spiral case and impeller, different circumferential position at toroidal cavity are respectively equipped with the first air flue and the second air flue leading to the external world, are provided with for flowing through the isolation step that air-flow formation stops on the inwall of the part-toroidal cavity between the first air flue and the second air flue；Isolation step is provided with the groove of multiple speed that can reduce gas coming through.The blowby gas stream flowed through can form local eddy currents at this groove, the bulk flow prompt drop making leakage current is low, thus reduce leakage current and sent sharp-pointed noise when the close clearance flowed through between blade edge and isolation step, simultaneously, also can effectively reduce the leakage rate to low-pressure area gas from higher-pressure region, do not affect vortex fan changes wind efficiency.
Description
Technical field
This utility model relates to noise reduction technology field, specifically provides a kind of vortex fan spiral case, vortex fan and air-conditioner.
Background technology
nullAs shown in Figure 1，Vortex fan is that one is blown、Inhale dual-purpose ventilation source of the gas，It is made up of tens of blades 93 on impeller，It is similar to huge gas turbine impeller，When the impeller is rotated，Air between blade 93 is subject to centrifugal forces，Border movement towards blade 93，Enter into the toroidal cavity beyond blade 93 edge，Eddy current 92 is formed in toroidal cavity、And return to follow-up rotation from the side of blade 93 and the interval of blade 93 come，Thus，By the toroidal cavity between inlet channel and outlet passageway is provided for the isolation step that stop eddy current 92 passes through，Low-pressure area will be formed at air inlet 91，Air is entered by inlet channel、It is gradually accelerated after repeatedly eddy current 92 circulation as above，Finally owing to being stopped by isolation step，Formation higher-pressure region at air outlet 94，And discharge by gas outlet with high energy，For use.
Owing to the impeller of vortex fan is directly driven by motor, it is not necessary to any gear, simple in construction, type of belt drive is direct, therefore consumes energy less, stable performance, easy to maintenance, receives and is widely applied.
But existing vortex fan is during using, can be with a kind of more sharp-pointed noise, trace it to its cause, it is owing to being formed with narrow gap unavoidably between the table top of the edge of blade 93 and isolation step, thus the fraction of higher-pressure region will be by this narrow slot leakage to low-pressure area, and owing to the pressure differential between higher-pressure region and low-pressure area is the biggest, so the flow velocity of this leakage current can be the highest, and high velocity air is when flowing through this narrow gap, strong dither can be produced, thus will send sharp-pointed noise.
To this, current a kind of coping style is to strengthen the spacing between the edge of blade 93 and isolation step, close clearance is made not existed, although sharp-pointed noise so can be eliminated, but after the spacing between blade 93 and isolation step expands, ventilation also can increase therewith, and this just disagrees with the purpose that arranges isolating step, causes the efficiency of vortex fan to reduce.And be ensure vortex fan as far as possible change wind efficiency it is necessary to arrange the least by the gap between blade 93 and isolation step, this just defines changing wind efficiency and eliminating the sharp noise dilemma mutually restraining, can not get both of vortex fan.
It addition, people stays in air-conditioned room for a long time, headache, dizziness, the malaise symptoms such as nervous, unable easily occur, these mainly because of air-conditioned room close, room air is not circulated to make room air anion rareness cause.Therefore, it is necessary to take measures to introducing fresh air in air-conditioned room and foul indoor air being discharged to outdoor.At present, the air interchanger air quantity of the air-conditioner on market is little, change wind efficiency low, if and use above-mentioned vortex fan to carry out changing wind, although can ensure that and enough changing wind efficiency, but can produce sharp noise as above, strong influence can use impression, this most seriously constrains the development of overall performance of air-conditioner.
Utility model content
(1) to solve the technical problem that
The purpose of this utility model is to provide and a kind of can either eliminate sharp-pointed noise, does not the most affect vortex fan spiral case, vortex fan and the air-conditioner changing wind efficiency simultaneously.
(2) technical scheme
For achieving the above object, a kind of vortex fan spiral case that this utility model provides, including spiral case body, described spiral case body has the shell chamber rotated for impeller, toroidal cavity is left between multiple blades on the inwall in described shell chamber and described impeller, different circumferential position at described toroidal cavity are respectively equipped with the first air flue and the second air flue leading to the external world, are provided with for flowing through the isolation step that air-flow formation stops on the inwall of the described toroidal cavity of part between described first air flue and described second air flue；
Described isolation step is provided with the groove of multiple speed for reducing gas coming through.
Preferably, the cross section of described groove is semicircle.
Preferably, the opening of described groove is globoidal structure.
This utility model additionally provides a kind of vortex fan, and this vortex fan includes vortex fan spiral case as above.
Preferably, the projection on described isolation step of the respective side edge of described blade intersects with described groove.
Preferably, described toroidal cavity includes the first axle wing passage being positioned at an axial side of multiple described blade, the first axle side stage rank on the inwall of the described first axle wing passage of part that described isolation step includes being arranged between described first air flue and described second air flue, being provided at circumferentially spaced multiple described groove on described first axle side stage rank, described groove radially extends along described first axle wing passage；
The blade of described impeller bends to the circumferential direction of described impeller or tilts.
Preferably, described toroidal cavity also includes the second axle wing passage being positioned at another axial side of multiple described blade, the second axle side stage rank on the inwall of the described second axle wing passage of part that described isolation step also includes being arranged between described second air flue and described second air flue, being provided at circumferentially spaced multiple described groove on described second axle side stage rank, described groove extends along the radial direction of described second axle wing passage.
Preferably, described toroidal cavity also includes the outer ring channel being positioned at the outside of multiple described blade, described isolation step also includes the outer shroud step being arranged on the inwall of the described outer ring channel of part between described first air flue and described second air flue, and described outer shroud step is provided at circumferentially spaced multiple described groove.
Preferably, multiple described groove circumferences are uniform, and the blade quantity of described impeller can not be divided exactly by the quantity of multiple described grooves.
This utility model additionally provides a kind of air-conditioner, and this air-conditioner includes that vortex fan as above, described first air flue connect with indoor, and described second air flue connects with outdoor.
(3) beneficial effect
A kind of vortex fan spiral case that this utility model provides, including the vortex fan of this vortex fan spiral case and include the air-conditioner of this vortex fan, by arranging the groove of multiple speed that can reduce gas coming through on isolation step, the blowby gas stream flowed through can form local eddy currents at this groove, so that the bulk flow prompt drop of leakage current is low, thus reduce leakage current and sent sharp-pointed noise when the close clearance flowed through between blade edge and isolation step, simultaneously, also the leakage rate to low-pressure area gas from higher-pressure region can effectively be reduced, do not affect vortex fan changes wind efficiency.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of vortex fan of the prior art.
Fig. 2 is the exploded view of a kind of vortex fan that this utility model embodiment provides.
Fig. 3 is the schematic diagram of the lower half shell that this utility model embodiment provides.
Fig. 4 is this utility model embodiment impeller provided and schematic diagram isolating step mated condition.
Reference:
1, spiral case body；11, upper half shell；12, lower half shell；2, shell chamber；3, impeller；31, wheel hub；32, blade；33, dividing plate；4, isolation step；41, the first axle side stage rank；42, outer shroud step；5, the first air flue；6, the second air flue；7, groove；8, toroidal cavity；91, air inlet；92, eddy current；93, blade；94, air outlet；A, low-pressure area；B, higher-pressure region.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment, detailed description of the invention of the present utility model is described in further detail.Following example are used for illustrating this utility model, but are not limited to scope of the present utility model.
In description of the present utility model, it should be noted that unless otherwise clearly defined and limited, term " connects " and should be interpreted broadly, and connects for example, it may be fixing, it is also possible to be to removably connect, or be integrally connected；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary.For the ordinary skill in the art, above-mentioned term concrete meaning in this utility model can be understood with concrete condition.
Shown in Fig. 2 and Fig. 4, a kind of vortex fan that this utility model embodiment provides, including vortex fan spiral case, this vortex fan spiral case includes the spiral case body 1 being made up of upper half shell 11 and lower half shell 12, spiral case body has the shell chamber 2 rotated for impeller 3, the motor that the wheel hub 31 of impeller 3 and impeller 3 rotate all may be installed the center position in this shell chamber 2, on wheel hub 31, circumference is laid with multiple blade 32, toroidal cavity 8 is left between the edge of the multiple blades 32 on the inwall in shell chamber 2 and impeller 3, when blade 32 rotates, gas in this toroidal cavity 8 is driven by blade 32, accelerate.
Different circumferential position at toroidal cavity 8 are respectively equipped with the first air flue 5 and the second air flue 6 leading to the external world, and it is provided with for flowing through the isolation step 4 that air-flow formation stops on the inwall of the part-toroidal cavity 8 between the first air flue 5 and the second air flue 6, stop by this isolation step 4, low-pressure area is formed in the side that this isolation step 4 and blade 32 direction of rotation deviate from mutually, make air from the air flue air inlet communicated with this region, and, at formation higher-pressure region, the side b that this isolation step 4 is relative with blade 32 direction of rotation, gas is just discharged due to another air flue that this region is identical, and when the direction of rotation of impeller 3 changes, entering of air, row direction also can exchange.
In conjunction with shown in Fig. 3, wherein, isolation step 4 is provided with the groove 7 of multiple speed that can reduce gas coming through, owing to certainly existing the projection of relative strip between two grooves 7, so being also believed to be provided with the projection of multiple strip on isolation step 4；The bearing of trend of this groove 7 should be at least not consistent with the direction of the air-flow flowed through, i.e. the bearing of trend of groove 7 can be with the axial consistent of impeller 3 or with axially the forming an angle of impeller 3, when the leakage current by higher-pressure region b to low-pressure area a is through out-of-date, local eddy currents can be formed at this groove 7, this local eddy currents can form flow-disturbing to the leakage current flowed through, the bulk flow prompt drop thus making leakage current is low, then this leakage current is when the close clearance flowed through between blade 32 edge and isolation step 4, sent sharp-pointed noise will reduce, simultaneously, also can effectively reduce from higher-pressure region b to the leakage rate of low-pressure area a gas, do not affect vortex fan changes wind efficiency.
Preferably, the cross section of groove 7 is semicircle, and the opening of groove 7 is globoidal structure, and i.e. the inside of groove 7 and opening part are without corner angle, thus make leakage current be smoothly flowed into and flow out, can either effectively form eddy current, will not produce again new noise.
Toroidal cavity 8 can be made up of the outer ring channel of the first axle wing passage of an axial side of multiple blades 32 He the outside being positioned at multiple blade 32, during impeller 3 rotates, the only axial side at blade 32 forms eddy circulating, makes air-flow accelerate in toroidal cavity 8 by unilateral eddy circulating；Toroidal cavity 8 is additionally may included in the second axle wing passage of another axial side of vortex fan, eddy circulating is all there is in this in the axial both sides of blade 32, realized the acceleration of air-flow in toroidal cavity 8 by bilateral eddy circulating, and, for avoiding not interacting between the eddy current of both sides, center position at blade 32 is additionally provided with the dividing plate 33 extended radially outwardly, to be separated by the eddy circulating of both sides.
Accordingly, in above-mentioned first axle wing passage, the second axle wing passage and outer ring channel, it is sequentially provided with the 41, second axle side stage rank, the first axle side stage rank and outer shroud step 42, the 41, second axle side stage rank, the first axle side stage rank and outer shroud step 42 all can arrange above-mentioned groove 7.
Particularly, the multiple grooves 7 being arranged on the first axle side stage rank 41 and the second axle side stage rank can be the most spaced apart, each groove 7 is all radially extending along the first axle wing passage, and, the blade 32 on impeller 3 is made to bend to the circumferential direction of impeller 3 or tilt, so, the projection on the first axle side stage rank 41 or the second axle side stage rank of the corresponding axial side edge of blade 32 will present the form intersected with groove, i.e., during impeller 3 rotates, in terms of the axial direction of blade 32, blade 32 is to skim over each groove 7 from the inside to the outside or the most gradually, the entirety comparing blade 32 skims over groove 7 simultaneously, the windage formed is the most linear, the impact of the pause and transition in rhythm or melody to blade 32 can be reduced, the instantaneous wind produced is made an uproar also will not be excessive.Should be noted that, can also is that and be set to the bearing of trend of groove 7 with the radial direction of impeller 3, to there is angle and be set to radially extending by blade 32, or the bearing of trend of groove 7 with blade 32 is respectively set to become with the radial direction of impeller 3 angle of different angles, as long as making to present, between the respective side edge of blade 32 projection and the groove 7 on the first axle side stage rank 41 or the second axle side stage rank, the form intersected.
Same, can pass through to be set to the groove 7 being arranged on outer shroud step 42 extend along hand of helix, and the blade 32 that blade 32 is set to have blade 32 lift angle realizes making the projection on the respective side edges land rank 42 outside of blade 32 to present, with the groove 7 on this outer shroud step 42, the state intersected.
Preferably, above-mentioned multiple grooves 7 can be respectively set to circumferential uniform and make blade 32 quantity of impeller 3 can not be divided exactly by the quantity of multiple grooves 7, i.e. do not have have simultaneously two blades 32 simultaneously with two grooves 7 completely relative to situation, therefore the windage that groove 7 is formed acts on the windage formed on blade 32 and wind is made an uproar all without forming superposition, can avoid producing bigger wind and makes an uproar and impeller 3 is caused bigger vibration.
The present embodiment additionally provides a kind of air-conditioner, this air-conditioner includes vortex fan as above, and the first air flue 5 is connected with indoor, and the second air flue 6 is connected with outdoor, forward and backward by the impeller of vortex fan, realize, by row outside indoor gas with by the function of outdoor gas introducing, can effectively realizing indoor and changing wind.The feature ventilated by the big flux of above-mentioned vortex fan, it is achieved indoor effectively changes wind, to solve air-conditioned room closing, airless problem.Further, this vortex fan will not produce bigger sharp noise during running, and for the air-conditioner that quiet requirement is higher, can realize good use impression.
The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; on the premise of without departing from this utility model know-why; can also make some improvement and replacement, these improve and replace and also should be regarded as protection domain of the present utility model.
Claims (10)
1. a vortex fan spiral case, it is characterized in that, including spiral case body, described spiral case body has the shell chamber rotated for impeller, toroidal cavity is left between multiple blades on the inwall in described shell chamber and described impeller, different circumferential position at described toroidal cavity are respectively equipped with the first air flue and the second air flue leading to the external world, are provided with for flowing through the isolation step that air-flow formation stops on the inwall of the described toroidal cavity of part between described first air flue and described second air flue；
Described isolation step is provided with the groove of multiple speed for reducing gas coming through.
Vortex fan spiral case the most according to claim 1, it is characterised in that the cross section of described groove is semicircle.
Vortex fan spiral case the most according to claim 1, it is characterised in that the opening of described groove is globoidal structure.
4. a vortex fan, it is characterised in that include the vortex fan spiral case as described in any one of claims 1 to 3.
Vortex fan the most according to claim 4, it is characterised in that the projection on described isolation step of the respective side edge of described blade intersects with described groove.
Vortex fan the most according to claim 5, it is characterized in that, described toroidal cavity includes the first axle wing passage being positioned at an axial side of multiple described blade, the first axle side stage rank on the inwall of the described first axle wing passage of part that described isolation step includes being arranged between described first air flue and described second air flue, being provided at circumferentially spaced multiple described groove on described first axle side stage rank, described groove radially extends along described first axle wing passage；
The blade of described impeller bends to the circumferential direction of described impeller or tilts.
Vortex fan the most according to claim 6, it is characterized in that, described toroidal cavity also includes the second axle wing passage being positioned at another axial side of multiple described blade, the second axle side stage rank on the inwall of the described second axle wing passage of part that described isolation step also includes being arranged between described second air flue and described second air flue, being provided at circumferentially spaced multiple described groove on described second axle side stage rank, described groove extends along the radial direction of described second axle wing passage.
Vortex fan the most according to claim 7, it is characterized in that, described toroidal cavity also includes the outer ring channel being positioned at the outside of multiple described blade, described isolation step also includes the outer shroud step being arranged on the inwall of the described outer ring channel of part between described first air flue and described second air flue, and described outer shroud step is provided at circumferentially spaced multiple described groove.
9., according to the vortex fan described in any one of claim 4 to 8, it is characterised in that multiple described groove circumferences are uniform, the blade quantity of described impeller can not be divided exactly by the quantity of multiple described grooves.
10. an air-conditioner, it is characterised in that including that the vortex fan as described in any one of claim 4 to 9, described first air flue connect with indoor, described second air flue connects with outdoor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620030940.XU CN205744602U (en) | 2016-01-12 | 2016-01-12 | Vortex fan spiral case, vortex fan and air-conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620030940.XU CN205744602U (en) | 2016-01-12 | 2016-01-12 | Vortex fan spiral case, vortex fan and air-conditioner |
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| CN205744602U true CN205744602U (en) | 2016-11-30 |
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| CN201620030940.XU Active CN205744602U (en) | 2016-01-12 | 2016-01-12 | Vortex fan spiral case, vortex fan and air-conditioner |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107317433A (en) * | 2017-08-16 | 2017-11-03 | 李记东 | A kind of high rotating speed gas suspension fluid machinery cooling system |
| CN109237579A (en) * | 2018-10-29 | 2019-01-18 | 杭州老板电器股份有限公司 | Low-noise fan and range hood |
| US11578731B2 (en) | 2020-06-15 | 2023-02-14 | Delta Electronics, Inc. | Asymmetrical double-outlet blower |
-
2016
- 2016-01-12 CN CN201620030940.XU patent/CN205744602U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107317433A (en) * | 2017-08-16 | 2017-11-03 | 李记东 | A kind of high rotating speed gas suspension fluid machinery cooling system |
| CN107317433B (en) * | 2017-08-16 | 2023-08-22 | 北京智拓博科技有限公司 | High-rotation-speed gas suspension fluid mechanical cooling system |
| CN109237579A (en) * | 2018-10-29 | 2019-01-18 | 杭州老板电器股份有限公司 | Low-noise fan and range hood |
| US11578731B2 (en) | 2020-06-15 | 2023-02-14 | Delta Electronics, Inc. | Asymmetrical double-outlet blower |
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