CN203783969U - Centrifugal volute and air conditioner - Google Patents
Centrifugal volute and air conditioner Download PDFInfo
- Publication number
- CN203783969U CN203783969U CN201420066802.8U CN201420066802U CN203783969U CN 203783969 U CN203783969 U CN 203783969U CN 201420066802 U CN201420066802 U CN 201420066802U CN 203783969 U CN203783969 U CN 203783969U
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- Prior art keywords
- sidewall
- cavity
- micropunch
- spiral casing
- snail tongue
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- 241000237858 Gastropoda Species 0.000 claims description 39
- 239000000463 material Substances 0.000 claims description 4
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 6
- 230000002159 abnormal effect Effects 0.000 description 5
- 230000002745 absorbent Effects 0.000 description 3
- 239000002250 absorbent Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
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Abstract
The utility model relates to a centrifugal volute and an air conditioner, wherein the centrifugal volute comprises a front wall plate and a side wall; the side wall comprises an inlet side wall, a volute tongue inner side wall, a bottom side wall and an outlet side wall, two ends of the volute tongue are respectively connected with the inlet side wall and the volute tongue inner side wall, and the bottom side wall is respectively connected with the volute tongue inner side wall and the outlet side wall; and cavities communicated with the plurality of micro-perforations are respectively arranged at corresponding positions on the side wall corresponding to the micro-perforations, so that the purpose of reducing the noise peak value of the acoustic resonance frequency is achieved.
Description
Technical field
The utility model relates to field of air conditioning, particularly relates to the spiral case that the centrifugal blower in a kind of air conditioner and air conditioner is used.
Background technique
In prior art, by the noise to indoor machine, test, find the abnormal noise peak of centrifugal blower fan system ubiquity using in air-conditioning, the resonant frequency of noise peak and the rotating speed of blower fan system are irrelevant, only relevant with the internal volume of spiral case and the size of fan blade.
Abnormal noise peak causes existing in the air channel of indoor air conditioner cabinet the noise peak of the acoustic resonance of front panel, causes air conditioner lower tone.
In view of above-mentioned defect, the inventor has obtained the invention finally through long research and practice.
Model utility content
Based on this, be necessary to provide a kind of spiral case and air conditioner that reduces the noise peak of acoustic resonance frequency.
A kind of anticentripetal spiral casing of the present utility model, comprises front panel and sidewall; Sidewall comprises ingress sidewall, snail tongue, snail tongue madial wall, bottom sidewall and outlet port sidewall, snail tongue two ends are connected with snail tongue madial wall with ingress sidewall respectively, bottom sidewall is connected with outlet port sidewall with snail tongue madial wall respectively, at described ingress sidewall, described snail tongue madial wall, described bottom sidewall and described outlet port sidewall, wherein at least two positions, place, is evenly arranged a plurality of micropunch;
On described sidewall, the relevant position of corresponding described micropunch arranges respectively the cavity being connected with a plurality of described micropunch.
As a kind of embodiment, on described ingress sidewall, described snail tongue madial wall, described bottom sidewall and described outlet port sidewall, be evenly arranged a plurality of micropunch;
In the outside of described sidewall, the position of corresponding above-mentioned a plurality of micropunch everywhere arranges respectively the first cavity, the second cavity, the 3rd cavity and the 4th cavity being connected with micropunch everywhere.
As a kind of embodiment, described in each, the diameter of micropunch is 1mm～3mm.
As a kind of embodiment, the hole pitch of adjacent described micropunch is 5mm～30mm.
As a kind of embodiment, the degree of depth of described the first cavity, described the second cavity, described the 3rd cavity and described the 4th cavity is 10～70mm.
As a kind of embodiment, the material of described the first cavity, described the second cavity, described the 3rd cavity and described the 4th cavity is ABS or foamed plastics.
As a kind of embodiment, the percent opening of the described micropunch on described ingress sidewall, described snail tongue madial wall, described bottom sidewall or described outlet port sidewall is 0.5%～3%.
As a kind of embodiment, described snail tongue madial wall is connected to described bottom sidewall, and described bottom sidewall is connected to described outlet port sidewall, and each joint seamlessly transits.
A kind of air conditioner of the present utility model, comprises above-mentioned anticentripetal spiral casing.
The beneficial effects of the utility model are compared with the prior art: the ingress sidewall in anticentripetal spiral casing on sidewall, snail tongue madial wall, bottom sidewall and outlet port sidewall wherein at least two positions, place, be evenly arranged a plurality of micropunch, and in the position correspondence of arranging micropunch, cavity is set, can effectively reduce the abnormal noise peak of acoustic resonance frequency, the reducing noise that makes air conditioner, tonequality is improved.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of anticentripetal spiral casing of the present utility model;
Fig. 2 is the distribution map of the location point that the vibration frequency of anticentripetal spiral casing of the present utility model is higher;
Fig. 3 is that the master of anticentripetal spiral casing of the present utility model looks schematic diagram;
Fig. 4 is that schematic diagram is cutd open on an A-A left side for anticentripetal spiral casing of the present utility model;
Fig. 5 is that schematic diagram is cutd open on the A-A right side of anticentripetal spiral casing of the present utility model;
Fig. 6 is another schematic perspective view of anticentripetal spiral casing of the present utility model;
Fig. 7 is a schematic perspective view again of anticentripetal spiral casing of the present utility model.
Embodiment
In order to solve the problem of the abnormal noise peak of the existence of acoustic resonance frequency of front panel, the noise peak that a kind of anticentripetal spiral casing is realized the acoustic resonance frequency that reduces front panel has been proposed, improve air conditioner tonequality.
Below in conjunction with accompanying drawing, to the utility model is above-mentioned, be described in more detail with other technical characteristics and advantage.
Refer to shown in Fig. 1, its schematic perspective view that is anticentripetal spiral casing of the present utility model, anticentripetal spiral casing 100 comprises front panel 110 and sidewall.Sidewall comprises ingress sidewall 112, snail tongue madial wall 114, bottom sidewall 116, outlet port sidewall 118 and snail tongue 160.The two ends of snail tongue 160 are connected with snail tongue madial wall 114 with ingress sidewall 112 respectively, and bottom sidewall 116 is connected with outlet port sidewall 118 with snail tongue madial wall 114 respectively.
More preferably, snail tongue madial wall 114 is respectively arcwall with bottom sidewall 116, and two arcwalls are connected, and surround one section of circular arc, and the trend of outlet port sidewall 118 is parallel to the tangent direction of bottom sidewall 116.Ingress sidewall 112 is at a certain angle with outlet port sidewall 118 shapes, and this angle is opened ingress sidewall 112 outward gradually.
Snail tongue 160 between ingress sidewall 112 and snail tongue madial wall 114, snail tongue 160 rounding ofves.
According to the principle of porous plate acoustic adsorption device, can offer micropunch by the diverse location on anticentripetal spiral casing 100, utilize the friction of air in aperture or narrow slit to absorb acoustic energy, thereby reach the object of the noise peak that reduces anticentripetal spiral casing 100.
Can wherein at least two positions, place, be evenly arranged a plurality of micropunch with outlet port sidewall 118 at ingress sidewall 112, snail tongue madial wall 114, bottom sidewall 116.On sidewall, the relevant position of corresponding a plurality of micropunch arranges respectively the cavity being connected with a plurality of micropunch.
As a kind of embodiment, at the ingress of sidewall sidewall 112, snail tongue madial wall 114, bottom sidewall 116 and outlet port sidewall 118, this is evenly arranged a plurality of micropunch on position everywhere.
Position in the corresponding above-mentioned a plurality of micropunch everywhere in the outside of sidewall arranges respectively the first cavity 120, the second cavity 130, the 3rd cavity 140 and the 4th cavity 150, and above-mentioned four cavitys are connected with a plurality of micropunch everywhere respectively.
The first cavity 120, the second cavity 130, the 3rd cavity 140 and the 4th cavity 150 are flute profile, and the slit opening of each cavity fits to respectively the outside of front panel 110.Design by cavity makes noise in cavity, obtain buffering, has reduced noise toward outside transmission, effectively reduces the abnormal noise peak of acoustic resonance frequency, makes the reducing noise of air conditioner, and tonequality is improved.
Preferably, perforated microstructure is arranged on acoustic resonance frequency on sidewall and causes the position that vibration amplitude is larger.
Inventor has carried out vibration-testing to anticentripetal spiral casing 100, refer to shown in Fig. 2, it is the distribution map of the location point that the vibration frequency of anticentripetal spiral casing of the present utility model is higher, and to the 1-18 marking in Fig. 2 the upper vibration amplitude collection of point, the vibration amplitude of surveying at each point is as shown in table 1 below:
| Position | Vibration amplitude (g) | Position | Vibration amplitude (g) | Position | Vibration amplitude (g) |
| 1 | 410e-6 | 7 | 103e-6 | 13 | 1.04e-3 |
| 2 | 450e-6 | 8 | 107e-6 | 14 | 610e-6 |
| 3 | 1.66e-3 | 9 | 213e-6 | 15 | 430e-6 |
| 4 | 1.65e-3 | 10 | 903e-6 | 16 | 524e-6 |
| 5 | 2.33e-3 | 11 | 1.07e-3 | 17 | 1.56e-3 |
| 6 | 1.13e-3 | 12 | 735e-6 | 18 | 633e-6 |
The vibration amplitude contrast of each location point of table 1 anticentripetal spiral casing
By the Results of Vibration in table 1, can find out, several location points that on the sidewall of anticentripetal spiral casing, vibration frequency is the highest are respectively: bottom sidewall 116, ingress sidewall 112, outlet port sidewall 118, snail tongue madial wall 114.So, according to above-mentioned test result, at ingress sidewall 112, snail tongue madial wall 114, bottom sidewall 116, arrange micropunch with the local uniform on outlet port sidewall 118.
More than on sidewall, the outside relevant position of four positions arranges the first cavity 120, the second cavity 130, the 3rd cavity 140 and the 4th cavity 150, has saved material and space, reduces costs, and can reach the effect of good reduction noise peak.
Micropunch sound absorbent is the combination by a plurality of Helmholtz resonators, and when the resonant frequency of incident sound wave frequency and micropunch sound absorbent is consistent, the air of perforation produces fierce vibration friction, has strengthened absorption effect, and acoustic energy is significantly decayed.
The resonant frequency of sound absorbent:
K
m＝1+(9+0.5x2)
-1/2+1.7r
0t
-1；
x＝0.65×r
0×f；
σ＝πr
2/4ab；
Wherein, f is resonant frequency, and σ is percent opening, and t is spiral case thickness, r
0for perforate radius, d is the cavity depth of the first cavity 120, the second cavity 130, the 3rd cavity 140 or the 4th cavity 150, and r is perforate radius, and a, b are hole pitch.
Refer to shown in Fig. 3 to Fig. 7, Fig. 3 is that the master of anticentripetal spiral casing of the present utility model looks schematic diagram, Fig. 4 is that schematic diagram is cutd open on an A-A left side for anticentripetal spiral casing of the present utility model, Fig. 5 is that schematic diagram is cutd open on the A-A right side of anticentripetal spiral casing of the present utility model, Fig. 6 is another schematic perspective view of anticentripetal spiral casing of the present utility model, Fig. 7 is a schematic perspective view again of anticentripetal spiral casing of the present utility model, from Fig. 4, see a plurality of micropunch on ingress sidewall 112 and snail tongue madial wall 114, from Fig. 5, see a plurality of micropunch on bottom sidewall 116 and outlet port sidewall 118, the diameter of each micropunch is 1mm～3mm.
As a kind of embodiment, the hole pitch of adjacent micropunch is 5mm～30mm.
As a kind of embodiment, the degree of depth of the first cavity 120, the second cavity 130, the 3rd cavity 140 and the 4th cavity 150 is 10～70mm.
Anticentripetal spiral casing 100 is under the different condition of micropunch, hole pitch and cavity depth, and the noise data recording is as shown in table 2 below:
| Thickness of slab | Aperture | Pitch-row | Cavity depth | Noise figure |
| 3 | 0 | 0 | 0 | 39.05dB/490HZ |
| 3 | 1 | 10 | 70 | 33.79dB/490HZ |
| 3 | 2 | 20 | 62 | 36.8dB/490HZ |
| 3 | 3 | 30 | 54 | 38.5dB/490HZ |
Noise figure contrast under the different condition of table 2
As shown in table 2, when front panel 110 is 3mm with the thickness of sidewall, micropunch is designed to diameter 1mm, and hole pitch 10mm, during percent opening 0.79%, can significantly improve the acoustic resonance noise peak of the front panel 110 of 490HZ.
As a kind of embodiment, the material of the first cavity 120, the second cavity 130, the 3rd cavity 140 and the 4th cavity 150 is ABS or foamed plastics.
As a kind of embodiment, the percent opening of the micropunch on ingress sidewall 112, snail tongue madial wall 114, bottom sidewall 116 and outlet port sidewall 118 is 0.5%～3%.
More preferably, in the present embodiment, the first cavity 120, the second cavity 130, the 3rd cavity 140 and the 4th cavity 150 are square cavity.The concrete size of the first cavity 120, the second cavity 130, the 3rd cavity 140 and the 4th cavity 150 is according to the size respective design of ingress sidewall 112, snail tongue madial wall 114, bottom sidewall 116 and outlet port sidewall 118.
More preferably, front panel 110 is thin-wall part with sidewall.
As a kind of embodiment, snail tongue madial wall 114 is connected to bottom sidewall 116, and bottom sidewall 116 is connected to outlet port sidewall 118, and each joint seamlessly transits, and transition smoothly makes air-flow steady, is conducive to noise reduction.
More preferably, snail tongue 160 seamlessly transits with the two ends that snail tongue madial wall 114 is connected with ingress sidewall 112, and transition smoothly makes air-flow steady, is conducive to noise reduction.
More preferably, ingress sidewall 112, snail tongue madial wall 114, bottom sidewall 116 are formed in one with outlet port sidewall 118.
A kind of air conditioner of the present utility model, comprises above-mentioned anticentripetal spiral casing 100.
The above embodiment has only expressed several mode of execution of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (9)
1. an anticentripetal spiral casing, comprises front panel and sidewall; Sidewall comprises ingress sidewall, snail tongue, snail tongue madial wall, bottom sidewall and outlet port sidewall, snail tongue two ends are connected with snail tongue madial wall with ingress sidewall respectively, bottom sidewall is connected with outlet port sidewall with snail tongue madial wall respectively, it is characterized in that, at described ingress sidewall, described snail tongue madial wall, described bottom sidewall and described outlet port sidewall, wherein at least two positions, place, be evenly arranged a plurality of micropunch;
On described sidewall, the relevant position of corresponding described micropunch arranges respectively the cavity being connected with a plurality of described micropunch.
2. anticentripetal spiral casing according to claim 1, is characterized in that, on described ingress sidewall, described snail tongue madial wall, described bottom sidewall and described outlet port sidewall, is evenly arranged a plurality of micropunch;
In the outside of described sidewall, the position of corresponding above-mentioned a plurality of micropunch everywhere arranges respectively the first cavity, the second cavity, the 3rd cavity and the 4th cavity being connected with micropunch everywhere.
3. anticentripetal spiral casing according to claim 1, is characterized in that, described in each, the diameter of micropunch is 1mm～3mm.
4. anticentripetal spiral casing according to claim 1, is characterized in that, the hole pitch of adjacent described micropunch is 5mm～30mm.
5. anticentripetal spiral casing according to claim 2, is characterized in that, the degree of depth of described the first cavity, described the second cavity, described the 3rd cavity and described the 4th cavity is 10～70mm.
6. anticentripetal spiral casing according to claim 2, is characterized in that, the material of described the first cavity, described the second cavity, described the 3rd cavity and described the 4th cavity is ABS or foamed plastics.
7. anticentripetal spiral casing according to claim 1 and 2, is characterized in that, the percent opening of the described micropunch on described ingress sidewall, described snail tongue madial wall, described bottom sidewall or described outlet port sidewall is 0.5%～3%.
8. anticentripetal spiral casing according to claim 1, is characterized in that, described snail tongue madial wall is connected to described bottom sidewall, and described bottom sidewall is connected to described outlet port sidewall, and each joint seamlessly transits.
9. an air conditioner, comprises anticentripetal spiral casing, it is characterized in that, described anticentripetal spiral casing is the anticentripetal spiral casing described in claim 1 to 8 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420066802.8U CN203783969U (en) | 2014-02-14 | 2014-02-14 | Centrifugal volute and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420066802.8U CN203783969U (en) | 2014-02-14 | 2014-02-14 | Centrifugal volute and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203783969U true CN203783969U (en) | 2014-08-20 |
Family
ID=51320161
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420066802.8U Expired - Lifetime CN203783969U (en) | 2014-02-14 | 2014-02-14 | Centrifugal volute and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203783969U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807095A (en) * | 2015-05-08 | 2015-07-29 | 珠海格力电器股份有限公司 | Air conditioner |
| CN106907773A (en) * | 2017-03-22 | 2017-06-30 | 广东美的制冷设备有限公司 | Snail tongue, air channel structure and air-conditioner |
-
2014
- 2014-02-14 CN CN201420066802.8U patent/CN203783969U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104807095A (en) * | 2015-05-08 | 2015-07-29 | 珠海格力电器股份有限公司 | Air conditioner |
| WO2016180250A1 (en) * | 2015-05-08 | 2016-11-17 | 珠海格力电器股份有限公司 | Air conditioner |
| CN104807095B (en) * | 2015-05-08 | 2020-02-21 | 珠海格力电器股份有限公司 | Air conditioner |
| CN106907773A (en) * | 2017-03-22 | 2017-06-30 | 广东美的制冷设备有限公司 | Snail tongue, air channel structure and air-conditioner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140820 |