CN204851788U - Snail tongue, spiral case that has this snail tongue and through -flow fan - Google Patents
Snail tongue, spiral case that has this snail tongue and through -flow fan Download PDFInfo
- Publication number
- CN204851788U CN204851788U CN201520578963.XU CN201520578963U CN204851788U CN 204851788 U CN204851788 U CN 204851788U CN 201520578963 U CN201520578963 U CN 201520578963U CN 204851788 U CN204851788 U CN 204851788U
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- Prior art keywords
- snail tongue
- impeller
- radius
- meets
- water conservancy
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Abstract
The utility model provides a snail tongue, spiral case that has this snail tongue and through -flow fan, wherein snail tongue (1) including water conservancy diversion body (11) and radius portion (12), water conservancy diversion body (11) are including bellying (111), depressed part (112) and mild portion (113), mild portion (113) with radius portion (12) meets, just 0.1D1 is satisfied towards the length l on one side of the impeller (2) in water conservancy diversion body (11), and < 0.3D1, wherein D1 is the external diameter of impeller (2) to l, and/or snail tongue (1) satisfies 15 < alpha < 50 towards the central angle alpha that the length l on one side of the impeller (2) accounted for impeller (2) centre of a circle, the use the utility model discloses a snail tongue, spiral case that has this snail tongue and through -flow fan can reduce eccentric eddy territory effectively, and the increase impeller eye is regional, and then the outflow of increase through -flow fan to improve fan efficiency, reduced the fan consumption effectively and effluented the noise, promoted the comprehensive properties of fan.
Description
Technical field
The utility model belongs to blower fan technical field, relates to a kind of novel snail tongue structure, has the spiral case of this snail tongue, and relates to a kind of cross flow fan using this snail tongue structure, spiral case.
Background technique
Cross flow fan is crossflow fan again, and impeller is multi-blade type, oval tubular, has forward multiple wing shape blade, and during vane rotary, air-flow opens wide from impeller and enters leaf grating, through impeller internal, enters spiral case from another side leaf grating, forms working air current.In order to prevent air-flow at spiral case internal circulation flow, backflow place that generally need be positioned at air outlet at spiral case arranges a snail tongue.The mobility status of air-flow in impeller is very complicated, and air-flow field is non-stable, there is a vortex, be centrally located near snail tongue in impeller.The position of vortex is comparatively large to the performance impact of crossflow fan, and vortex core is close to impeller inner circumference and near snail tongue, fan performance is better; Vortex core is away from snail tongue, then the region of circular flow increases, and fan efficiency reduces, and instability of flow degree increases.
In existing cross flow fan, be subject to the restriction of snail tongue partial structurtes, the shortcomings such as fan efficiency is low, power consumption is large, noise is large can be there is.Therefore based on above-mentioned defect of the prior art, need research and design to go out a kind ofly can effectively to raise the efficiency, reduce power consumption, reduce the novel snail tongue structure of noise and there is spiral case and the cross flow fan of this snail tongue structure.
Model utility content
Therefore, the technical problems to be solved in the utility model is to overcome the defect that cross flow fan efficiency of the prior art is low, power consumption is large, noise is large, thus provides a kind of snail tongue structure and have spiral case and the cross flow fan of this snail tongue structure.
A kind of snail tongue of the present utility model, it comprises water conservancy diversion body and radius, and described water conservancy diversion body comprises lug boss, depressed part and mild portion, and described mild portion connects with described radius, and wherein said water conservancy diversion body meets 0.1D towards the length l of impeller side
1< l < 0.3D
1, wherein D
1for the external diameter of impeller, and/or the central angle alpha that snail lingual surface accounts for the impeller center of circle to the length l of impeller side meets 15 ° of < α < 50 °.
Described snail lingual surface is to the length l=0.2D of impeller side
1.
Described snail lingual surface accounts for central angle alpha=30 ° in the impeller center of circle to the length l of impeller side.
Described snail tongue radius r also meets relation 0.02D
1< r < 0.1D
1.
Described snail tongue radius r meets relation r=0.06D
1.
The two-end-point of the radius of described snail tongue extends along the respective straight line before rounding the bias angle theta that formed angle is snail tongue respectively, and the bias angle theta of this snail tongue meets relation 20 ° of < θ < 75 °.
The bias angle theta of described snail tongue meets 35 ° of < θ < 70 °.
The bias angle theta of described snail tongue meets θ=50 °.
Minimum clearance δ between described snail tongue and impeller is not more than 8%D
1.
Described snail tongue and impeller minimum clearance δ meet relation δ=5%D
1.
The utility model also provides a kind of spiral case, and it comprises aforesaid snail tongue.
The utility model also provides a kind of cross flow fan, and it comprises motor, impeller, air channel, intake grill, exhaust outlet, spiral case, wherein also comprises aforesaid snail tongue, and described snail tongue to be arranged on spiral case and to be positioned at the position of exhaust outlet.
A kind of snail tongue of the present utility model and there is the spiral case of this snail tongue and cross flow fan has following beneficial effect:
1. according to a kind of snail tongue of the present utility model and spiral case and the cross flow fan with this snail tongue, can effectively reduce eccentric vortex region, increase impeller eye region, and then increase the outflow of cross flow fan, thus improve fan efficiency, significantly reduce blower fan power consumption and go out to flow noise, improving the combination property of blower fan.
2. according to a kind of snail tongue of the present utility model and the cross flow fan with this snail tongue, effectively can improve the shunting effect of snail tongue, increase outflow, achieve the effect reducing turbulent flow noise.
3. according to a kind of snail tongue of the present utility model and the cross flow fan with this snail tongue, can effectively reduce and control backflow, thus improve blower fan go out to flow efficiency, significantly reduce the noise of blower fan.
Accompanying drawing explanation
Fig. 1 is the main structure schematic diagram of a kind of cross flow fan of the present utility model;
Fig. 2 is the close-up schematic view at the A position (snail tongue position) in Fig. 1.
In figure, reference character is expressed as:
1-snail tongue, 11-water conservancy diversion body, 111-lug boss, 112-depressed part, 113-mild portion, 12-radius, 2-impeller, 3-air channel, 4-intake grill, 5-exhaust outlet, 6-spiral case, 7-heat exchanger.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples for illustration of the utility model, but are not used for limiting protection domain of the present utility model.
As shown in Figure 1, a kind of cross flow fan of the present utility model, it comprises motor (not shown), impeller 2, air channel 3, intake grill 4, exhaust outlet 5, spiral case 6, also comprises and is arranged on spiral case 5 and is positioned at the snail tongue 1 of the position of exhaust outlet 4.
As shown in Figure 2, described snail tongue 1 comprises water conservancy diversion body 11 and radius 12, described water conservancy diversion body 11 comprises depressed part 112 and lug boss 111, and the wind flowing through snail tongue, successively through depressed part 112, lug boss 111, mild portion 113 and radius 12, flows out gently from exhaust outlet 5.
The length l of snail tongue 1 is the distance between the top dead center a to lower dead center b of the water conservancy diversion body 11 of the snail tongue 1 in narrowed flow path, and namely described water conservancy diversion body 11 is l towards the length of impeller 2 side.Preferably, described water conservancy diversion body 11 meets 0.1D towards the length l of impeller 2 side
1< l < 0.3D
1, wherein D
1for the external diameter of impeller 2, and/or the central angle alpha that snail tongue 1 accounts for impeller 2 center of circle towards the length l of impeller 2 side meets 15 ° of < α < 50 °, to form short snail tongue structure.
By adopting short snail tongue structure of the present utility model, namely for the above-mentioned snail tongue structure comprising water conservancy diversion body 11 and radius 12, by snail tongue 1 length l is set to meet 0.1D
1< l < 0.3D
1and/or the central angle alpha that snail tongue 1 accounts for impeller 2 center of circle towards the length l of impeller 2 side meets 15 ° of < α < 50 °, can effectively reduce eccentric vortex region, increase impeller eye region, and then increase the outflow of cross flow fan, thus improve fan efficiency, significantly reduce blower fan power consumption and go out to flow noise, improving the combination property of blower fan.
Preferably, snail tongue 1 is towards the length l=0.2D of impeller 2 side
1.
Preferably, snail tongue 1 accounts for central angle alpha=30 ° in impeller 1 center of circle towards the length l of impeller 2 side.
Table 1 demonstrates the cross flow fan of different length snail tongue 1 at rotating speed and impeller diameter D
1the numerical value change of the flow shown when all identical, noise and power consumption.
Table 1
| Rotating speed (rpm) | 830 | 830 | 830 |
| Impeller diameter (mm) | 99 | 99 | 99 |
| Snail tongue length (mm) | 30.12 | 26.98 | 20.96 |
| Flow (m 3/h) | 469.83 | 479.44 | 487.90 |
| Wideband sound output (dB) | 66.25 | 64.73 | 64.10 |
| Power consumption (W) | 20.3 | 19.5 | 19.8 |
Snail tongue length l is shorter to a certain extent as can be seen here can make flow enhancement effectively, and noise reduces, and power consumption also reduces.
As shown in Figure 2, snail tongue 1 radius r is with flex point c in snail tongue 1 for the center of circle, to the water conservancy diversion body 11 of snail tongue 1 lower dead center b between distance (see Fig. 2), lead the radius in round portion 12 namely.Further, snail tongue 1 radius r also meets relation 0.02D
1< r < 0.1D
1.By being arranged in above-mentioned scope by the radius r of snail tongue 1, effectively can improve snail tongue shunting effect, increasing outflow, reduce turbulent flow noise.Preferably, the radius r of snail tongue 1 meets relation r=0.06D
1.
As shown in Figure 2, the two-end-point (lower dead center b and outer dead point e) of the radius 12 of described snail tongue 1 extends respectively along the respective straight line before rounding and intersects at a f, and forming a bias angle theta, the angle that this f place is formed just is snail tongue bias angle theta (i.e. snail tongue 1 radius 12 before rounding at exhaust outlet 5 (f point) angle of being formed bottom).Preferably, snail tongue bias angle theta meets 20 ° of < θ < 75 °, by snail tongue bias angle theta being set in the scope of 20 ° of < θ < 75 °, effectively can reduce the backflow of air-flow, thus effectively can improve and stream efficiency.
Preferably, the bias angle theta of snail tongue 1 meets 35 ° of < θ < 70 °.
Preferably, bias angle theta=50 ° of snail tongue 1.
Further, the minimum clearance between snail tongue 1 and impeller 2 is δ, is the distance of lug boss 111 summit to impeller 2 external diameter, and the position of δ is positioned at the water conservancy diversion main body portion 11 of snail tongue 1 and the proximal most position place of impeller 1.Further, minimum clearance δ is not more than 8%D
1, effectively to control backflow, thus can effectively can control and reduce noise.
Preferably, snail tongue 1 and impeller 2 minimum clearance δ meet relation δ=5%D
1.
Those skilled in the art are it is easily understood that under the prerequisite of not conflicting, and above-mentioned each preferred version freely can combine, superpose.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.The above is only preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model know-why; can also make some improvement and modification, these improve and modification also should be considered as protection domain of the present utility model.
Claims (12)
1. a snail tongue (1), it comprises water conservancy diversion body (11) and radius (12), described water conservancy diversion body (11) comprises lug boss (111), depressed part (112) and mild portion (113) successively, described mild portion (113) connects with described radius (12), it is characterized in that: described water conservancy diversion body (11) meets 0.1D towards the length l of impeller (2) side
1< l < 0.3D
1, wherein D
1for the external diameter of impeller (2), and/or the central angle alpha that snail tongue (1) accounts for impeller (2) center of circle towards the length l of impeller (2) side meets 15 ° of < α < 50 °.
2. a kind of snail tongue according to claim 1, is characterized in that: described snail tongue (1) is towards the length l=0.2D of impeller (2) side
1.
3. a kind of snail tongue according to claim 1 and 2, is characterized in that: described snail tongue (1) accounts for central angle alpha=30 ° in impeller (2) center of circle towards the length l of impeller (2) side.
4. a kind of snail tongue according to claim 1, is characterized in that: the radius r of described snail tongue (1) and the center of circle of radius (12), meet relation 0.02D
1< r < 0.1D
1.
5. a kind of snail tongue according to claim 1 or 4, is characterized in that: the radius r of described snail tongue (1) meets relation r=0.06D
1.
6. a kind of snail tongue according to claim 1 or 4, it is characterized in that: the two-end-point of the radius (12) of described snail tongue (1) extends along the respective straight line before rounding the bias angle theta that formed angle is snail tongue respectively, and the bias angle theta of this snail tongue meets relation 20 ° of < θ < 75 °.
7. a kind of snail tongue according to claim 6, is characterized in that: the bias angle theta of described snail tongue (1) meets 35 ° of < θ < 70 °.
8. a kind of snail tongue according to claim 7, is characterized in that: the bias angle theta of described snail tongue (1) meets θ=50 °.
9. a kind of snail tongue according to claim 1 or 4, is characterized in that: the minimum clearance δ between described snail tongue (1) and impeller (2) is not more than 8%D
1.
10. a kind of snail tongue according to claim 9, is characterized in that: described snail tongue (1) and impeller (2) minimum clearance δ meet relation δ=5%D
1.
11. 1 kinds of spiral cases, is characterized in that: comprise the snail tongue (1) according to any one of claim 1-10.
12. 1 kinds of cross flow fans, it comprises motor, impeller (2), air channel (3), intake grill (4), exhaust outlet (5), spiral case (6), it is characterized in that: also comprise the snail tongue (1) according to any one of claim 1-10, described snail tongue (1) is arranged at spiral case (5) and goes up and the position being positioned at exhaust outlet (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520578963.XU CN204851788U (en) | 2015-08-04 | 2015-08-04 | Snail tongue, spiral case that has this snail tongue and through -flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520578963.XU CN204851788U (en) | 2015-08-04 | 2015-08-04 | Snail tongue, spiral case that has this snail tongue and through -flow fan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204851788U true CN204851788U (en) | 2015-12-09 |
Family
ID=54742341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520578963.XU Expired - Fee Related CN204851788U (en) | 2015-08-04 | 2015-08-04 | Snail tongue, spiral case that has this snail tongue and through -flow fan |
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| Country | Link |
|---|---|
| CN (1) | CN204851788U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050700A (en) * | 2016-07-19 | 2016-10-26 | 东莞市宏铭通风设备有限公司 | Noiseless fan structure |
| CN107131626A (en) * | 2017-06-07 | 2017-09-05 | 珠海格力电器股份有限公司 | Sweep wind connecting rod, sweep wind mechanism and air conditioner |
| CN107894034A (en) * | 2017-12-14 | 2018-04-10 | 海信（广东）空调有限公司 | Vortex tongue and indoor apparatus of air conditioner |
| CN108488927A (en) * | 2018-06-01 | 2018-09-04 | 广东美的制冷设备有限公司 | Air conditioner indoor unit and air conditioner with it |
| CN108916116A (en) * | 2018-06-26 | 2018-11-30 | 珠海格力电器股份有限公司 | Volute tongue and volute tongue control method, cross flow fan, air conditioner |
| CN110374934A (en) * | 2019-08-02 | 2019-10-25 | 马鞍山宸宇达风机工业有限公司 | The installation method of blower volute tongue |
| CN111852912A (en) * | 2020-07-17 | 2020-10-30 | 青岛海信日立空调系统有限公司 | Fan coil |
| CN111981566A (en) * | 2020-08-03 | 2020-11-24 | 珠海格力电器股份有限公司 | Fan and air conditioner indoor unit |
| CN112524093A (en) * | 2019-09-17 | 2021-03-19 | 广东美的环境电器制造有限公司 | Air guide assembly and air supply device |
| CN114636197A (en) * | 2022-03-31 | 2022-06-17 | 广东美的白色家电技术创新中心有限公司 | Cross-flow fan and air conditioner |
-
2015
- 2015-08-04 CN CN201520578963.XU patent/CN204851788U/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050700A (en) * | 2016-07-19 | 2016-10-26 | 东莞市宏铭通风设备有限公司 | Noiseless fan structure |
| CN107131626B (en) * | 2017-06-07 | 2024-01-02 | 珠海格力电器股份有限公司 | Wind sweeping connecting rod, wind sweeping mechanism and air conditioner |
| CN107131626A (en) * | 2017-06-07 | 2017-09-05 | 珠海格力电器股份有限公司 | Sweep wind connecting rod, sweep wind mechanism and air conditioner |
| CN107894034A (en) * | 2017-12-14 | 2018-04-10 | 海信（广东）空调有限公司 | Vortex tongue and indoor apparatus of air conditioner |
| CN108488927A (en) * | 2018-06-01 | 2018-09-04 | 广东美的制冷设备有限公司 | Air conditioner indoor unit and air conditioner with it |
| CN108916116A (en) * | 2018-06-26 | 2018-11-30 | 珠海格力电器股份有限公司 | Volute tongue and volute tongue control method, cross flow fan, air conditioner |
| CN108916116B (en) * | 2018-06-26 | 2024-03-29 | 珠海格力电器股份有限公司 | Volute tongue, volute tongue control method, cross-flow fan and air conditioner |
| CN110374934A (en) * | 2019-08-02 | 2019-10-25 | 马鞍山宸宇达风机工业有限公司 | The installation method of blower volute tongue |
| CN112524093A (en) * | 2019-09-17 | 2021-03-19 | 广东美的环境电器制造有限公司 | Air guide assembly and air supply device |
| CN111852912A (en) * | 2020-07-17 | 2020-10-30 | 青岛海信日立空调系统有限公司 | Fan coil |
| CN111852912B (en) * | 2020-07-17 | 2021-12-07 | 青岛海信日立空调系统有限公司 | Fan coil |
| CN111981566B (en) * | 2020-08-03 | 2021-06-18 | 珠海格力电器股份有限公司 | Fan and air conditioner indoor unit |
| CN111981566A (en) * | 2020-08-03 | 2020-11-24 | 珠海格力电器股份有限公司 | Fan and air conditioner indoor unit |
| CN114636197A (en) * | 2022-03-31 | 2022-06-17 | 广东美的白色家电技术创新中心有限公司 | Cross-flow fan and air conditioner |
| CN114636197B (en) * | 2022-03-31 | 2023-09-08 | 广东美的白色家电技术创新中心有限公司 | Cross-flow fan and air conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20210804 |