CN107576041B - Air conditioner volute tongue, air conditioner indoor unit and air conditioner - Google Patents
Air conditioner volute tongue, air conditioner indoor unit and air conditioner Download PDFInfo
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- CN107576041B CN107576041B CN201711052361.0A CN201711052361A CN107576041B CN 107576041 B CN107576041 B CN 107576041B CN 201711052361 A CN201711052361 A CN 201711052361A CN 107576041 B CN107576041 B CN 107576041B
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- volute tongue
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- 230000007704 transition Effects 0.000 claims description 15
- 230000001154 acute effect Effects 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 238000004378 air conditioning Methods 0.000 claims 1
- 238000005057 refrigeration Methods 0.000 abstract description 2
- 210000002105 tongue Anatomy 0.000 description 66
- 230000000694 effects Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000001228 spectrum Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention belongs to the field of refrigeration equipment, and particularly discloses an air conditioner volute tongue, an air conditioner indoor unit and an air conditioner, wherein the air conditioner volute tongue can effectively reduce air outlet noise and can prevent air outlet from flowing back. The air conditioner volute tongue comprises a volute tongue body, wherein an air guide surface is arranged on the volute tongue body, a plurality of flow guide ribs are arranged on the air guide surface at intervals along the length direction of the volute tongue body, and a flow guide groove is formed between any two adjacent flow guide ribs; the diversion trench is a spiral trench or an inclined trench. The indoor unit of the air conditioner comprises the air conditioner volute tongue. The air conditioner comprises the air conditioner indoor unit. By the diversion trench with the spiral or inclined structure, on one hand, the boundary of the air flow entering the diversion trench can be tightly attached to the surface of the diversion rib, thereby reducing the doping with surrounding air flow, avoiding larger energy fluctuation and reducing noise; on the other hand, the air flow is discharged along the diversion trench, so that the uniformity of the discharged air flow is ensured, and the air backflow can be avoided.
Description
Technical Field
The invention belongs to the field of refrigeration equipment, and particularly relates to an air conditioner volute tongue, an air conditioner indoor unit and an air conditioner.
Background
Along with the continuous improvement of the living standard of people, the requirements of people on substances are also higher and higher; for the air conditioner, which is a living necessity, people have higher requirements on the appearance and quality of the air conditioner. Noise is also becoming a significant indicator of customer experience when air conditioners are running. It has been found that, as a result of the study, the volute tongue has great influence on the generation of noise when the indoor unit of the air conditioner runs. The prior air conditioner volute tongue comprises a volute tongue body which is arranged in an indoor unit body and corresponds to a volute, wherein one surface of the volute tongue body facing the center in the volute is an air guide surface, a plurality of guide ribs which are distributed at intervals along the length direction of the volute tongue body are arranged on the air guide surface, and the guide ribs are arranged along the circumferential direction of the air guide surface, namely, the cross sections of the guide ribs and the volute tongue body are mutually parallel. Although the existing air conditioner volute tongue can meet the use requirement of an air conditioner, as the cross sections of the diversion ribs and the volute tongue body are mutually parallel, the diversion grooves formed between the adjacent diversion ribs are mutually parallel to the cross section of the volute tongue body, so that the noise reduction effect of the air conditioner volute tongue with the structure is not obvious in the use process; moreover, when the wind speed is high or the rotation speed of the cross-flow fan fluctuates, the impact of the airflow on the volute tongue is obvious, so that high noise is caused, and the air outlet backflow is caused.
Disclosure of Invention
The invention aims to solve the technical problem of providing an air conditioner volute tongue which can effectively reduce air outlet noise and avoid air outlet backflow.
The technical scheme adopted for solving the technical problems is as follows: the air conditioner volute tongue comprises a volute tongue body, wherein an air guide surface is arranged on the volute tongue body, a plurality of flow guide ribs are arranged on the air guide surface at intervals along the length direction of the volute tongue body, and a flow guide groove is formed between any two adjacent flow guide ribs; the diversion trench is a spiral trench or an inclined trench; when the diversion trench is an inclined trench, the included angle theta between the diversion rib and the cross section of the volute tongue body is an acute angle.
Further, the wind guide surface is of a U-shaped structure and comprises a first curved surface section, a second curved surface section and a third curved surface section which are connected together in a smooth transition mode in sequence; the diversion trenches are mutually parallel.
Further, the included angle theta between the flow guide rib and the cross section of the volute tongue body is 27-40 degrees.
Further, the guide rib is in arc transition connection with the air guide surface, and the height of the guide rib is 1 mm-3 mm.
Further, a round angle is led at the edge of the guide rib, and the radius of the round angle is 0.3-0.6 mm.
Further, the volute tongue body is further provided with a volute tongue wind guide top surface which is in smooth transition connection with the wind guide surface, the volute tongue wind guide top surface is provided with an inclined rib plate along the length direction of the volute tongue body, the upper end of the inclined rib plate is positioned on the upper side of the wind guide surface, and an included angle gamma between the inclined rib plate and the volute tongue wind guide top surface is an acute angle.
Furthermore, one end of the guide rib extends towards the inclined rib plate and is connected with the inclined rib plate in an arc transition mode.
Further, the arc radius of the arc transition structure connecting the flow guide rib and the inclined rib plate is 1 mm-3 mm; the included angle gamma between the inclined rib plate and the air guiding top surface of the volute tongue is 45-60 degrees.
The invention also provides an air conditioner indoor unit with low air outlet noise, which comprises a volute, an indoor unit panel, a cross-flow fan, a C-shaped evaporator and an indoor unit cover plate; the scroll casing and the indoor unit panel are oppositely arranged, the C-shaped evaporator is arranged between the scroll casing and the indoor unit panel, the cross-flow fan is arranged between the scroll casing and the C-shaped evaporator, the indoor unit cover plate is arranged at the bottom of the indoor unit panel, and an indoor unit air outlet is formed between the indoor unit cover plate and the bottom of the scroll casing; the air conditioner volute tongue also comprises any one of the air conditioner volute tongues; the volute tongue body of the air conditioner volute tongue is arranged at the inner end of the cover plate of the indoor unit, and the air guide surface of the volute tongue body faces to the center part in the volute.
The invention also provides an air conditioner which comprises the air conditioner indoor unit.
The beneficial effects of the invention are as follows: the air flow guiding ribs are spirally arranged on the air guiding surface, or the air flow guiding ribs and the cross section of the volute tongue body are arranged on the air guiding surface at an acute angle, so that the air flow impacted on the air guiding surface can be smoothly discharged along the air flow guiding grooves due to the fact that the air flow guiding grooves between two adjacent air flow guiding ribs are spiral grooves or inclined grooves; on one hand, the boundary of the air flow entering the diversion trench is tightly attached to the surface of the diversion ribs, so that doping with surrounding air flow is reduced, larger energy fluctuation is avoided, and noise is reduced; on the other hand, the air flow is discharged along the diversion trench, so that the uniformity of the discharged air flow is ensured, the circulating flow of the air in the volute is avoided, and the backflow of the air can be avoided.
Drawings
FIG. 1 is a schematic diagram of an embodiment of an air conditioner tongue according to the present invention;
FIG. 2 is a schematic side view of the air conditioner tongue of the present invention;
FIG. 3 is a schematic view of an embodiment of an indoor unit of an air conditioner according to the present invention;
FIG. 4 is a graph showing the comparison of noise spectrum of an air conditioner indoor unit in speed gear 1 using a volute tongue of the invention and a conventional volute tongue;
FIG. 5 is a graph showing the noise spectrum of the air conditioner indoor unit in the speed gear 2, using the volute tongue of the invention and using the existing volute tongue;
marked in the figure as: the scroll tongue body 100, the first curved surface section 101, the second curved surface section 102, the third curved surface section 103, the flow guiding rib 110, the flow guiding groove 120, the scroll tongue wind guiding top surface 130, the inclined rib plate 140, the volute 200, the indoor unit panel 300, the cross flow fan 400, the C-shaped evaporator 500 and the indoor unit cover plate 600.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, the air conditioner volute tongue comprises a volute tongue body 100, wherein an air guide surface is arranged on the volute tongue body 100, a plurality of flow guide ribs 110 are arranged on the air guide surface at intervals along the length direction of the volute tongue body 100, and a flow guide groove 120 is formed between any two adjacent flow guide ribs 110; the diversion trench 120 is a spiral trench or an inclined trench; when the diversion trench 120 is an inclined trench, the included angle θ between the diversion rib 110 and the cross section of the volute tongue body 100 is an acute angle.
Wherein, the plurality of guide ribs 110 are generally uniformly distributed on the air guiding surface to ensure uniformity of the air guiding flow and reduce noise; the diversion ribs 110 can be spirally arranged on the air guiding surface or can be obliquely arranged, so that the diversion grooves 120 are spiral grooves or oblique grooves; the diversion trench 120 with the structure can enable the boundary of the air flow entering the diversion trench 120 to be tightly attached to the surface of the diversion rib 110, thereby reducing the doping with surrounding air flow, avoiding larger energy fluctuation and reducing noise; on the other hand, the air flow can be discharged along the diversion trench 120, the uniformity of the discharged air flow is ensured, the circulating flow of the air in the volute 200 is avoided, and the back flow of the air is also avoided.
As a preferred scheme of the present invention, as shown in fig. 2, the air guiding surface has a U-shaped structure, which includes a first curved surface section 101, a second curved surface section 102 and a third curved surface section 103 connected together in a smooth transition manner in sequence; the guide grooves 120 are parallel to each other. After the volute tongue is installed on the indoor unit of the air conditioner, the first curved surface section 101 corresponds to the C-shaped evaporator 500, the second curved surface section 102 corresponds to the cross-flow fan 400, and the third curved surface section 103 corresponds to the air outlet of the indoor unit; in order to ensure the air guiding effect, the arc radius of the first curved surface section 101 is generally required to be larger than that of the second curved surface section 102; in order to reduce wind resistance and enhance the air-supplying capability of the air conditioner, the third curved surface section 103 should be made as smooth as possible, so that the radius of the arc of the third curved surface section 103 is generally required to be larger than that of the first curved surface section 101. The wind guide surface with the structure can reduce wind resistance, improve the air supply capacity of the volute tongue, be favorable for leading air flow to be smoothly guided to the air outlet of the indoor unit of the air conditioner, avoid turbulent flow caused by rebound of air outlet directly impacted on the volute tongue body 100 and further reduce noise. The diversion trenches 120 are parallel to each other, which is beneficial to ensuring the uniformity of the exhaust air flow and improving the performance of the indoor unit of the air conditioner.
The inventors found and demonstrated that the respective arc radii R of the first curved surface section 101, the second curved surface section 102, and the third curved surface section 103 constituting the air guiding surface 1 、R 2 And R is 3 When the ratio is 40-50:14-17:85-92, the volute tongue for the air conditioner indoor unit with the structure has the lowest influence on noise generation, namely the noise caused by the volute tongue in the running process of the air conditioner indoor unit can be reduced to a very low degree.
Preferably, the included angle θ between the flow guiding rib 110 and the cross section of the volute tongue body 100 is 27 ° to 40 °. As shown in fig. 4 and 5, the air conditioner indoor unit adopting the volute tongue with the structure has obviously smaller noise generated in the operation process, and can reduce the noise by 2-3 db under the same operation condition compared with the air conditioner indoor unit adopting the prior volute tongue.
Specifically, the guide rib 110 is in arc transition connection with the air guiding surface, and the height of the guide rib 110 is 1 mm-3 mm. The arc transition connection of the flow guiding rib 110 and the air guiding surface ensures the smoothness of the flow guiding groove 120, is beneficial to the flow guiding of air flow and reduces noise. The height of the guide rib 110 is designed to be 1mm to 3mm, on the one hand, to ensure the guide performance, and on the other hand, to adapt to the product and simplify the structure.
Specifically, the edge of the guide rib 110 is guided with a round angle, and the radius of the round angle is 0.3 mm-0.6 mm. The rounded corners at the edges of the guide rib 110 can also make the guide groove 120 smoother and reduce noise during air exhaust.
As another preferred embodiment of the present invention, as shown in fig. 2, a volute tongue wind guiding top surface 130 is further provided on the volute tongue body 100, the volute tongue wind guiding top surface 130 is provided with an inclined rib plate 140 along the length direction of the volute tongue body 100, the upper end of the inclined rib plate 140 is located at the upper side of the wind guiding surface, and an included angle γ between the inclined rib plate 140 and the volute tongue wind guiding top surface 130 is an acute angle. After the volute tongue is installed on the air conditioner indoor unit, the inclined rib plate 140 generally corresponds to the C-shaped evaporator 500, and the inclined rib plate 140 can prevent condensed water on the C-shaped evaporator 500 from being blown out by the cross-flow fan 400 on one hand, and can further improve the convection environment of air flow and reduce noise generated by the air conditioner indoor unit on the other hand.
Specifically, one end of the flow guiding rib 110 extends towards the inclined rib plate 140 and is connected with the inclined rib plate 140 in a circular arc transition mode.
In order to achieve better flow guiding effect and fully exert the noise reduction effect of the inclined rib plates 140, the arc radius of the arc transition structure connecting the flow guiding ribs 110 and the inclined rib plates 140 is 1 mm-3 mm; the included angle gamma between the inclined rib plate 140 and the volute tongue wind guide top surface 130 is 45-60 degrees.
As shown in fig. 3, the indoor unit of the air conditioner includes a scroll case 200, an indoor unit panel 300, a cross flow fan 400, a C-shaped evaporator 500, and an indoor unit cover 600; the scroll case 200 is disposed opposite to the indoor unit panel 300, the C-shaped evaporator 500 is disposed between the scroll case 200 and the indoor unit panel 300, the cross flow fan 400 is disposed between the scroll case 200 and the C-shaped evaporator 500, the indoor unit cover plate 600 is arranged at the bottom of the indoor unit panel 300, and an indoor unit air outlet is formed between the indoor unit cover plate 600 and the bottom of the volute 200; the air conditioner volute tongue also comprises any one of the air conditioner volute tongues; the volute tongue body 100 of the air conditioner volute tongue is provided on the inner end of the indoor unit cover 600 with its air guide surface facing the center portion inside the volute 200. After the volute tongue is installed, the inclined rib plate 140 corresponds to the C-shaped evaporator 500, the second curved surface section 102 corresponds to the cross-flow fan 400, and the third curved surface section 103 corresponds to an air outlet of the indoor unit. In order to make the air outlet of the indoor unit of the air conditioner smoother and more natural, it is preferable to adjust the distance between the volute tongue body 100 and the cross-flow fan 400 to 10mm to 20mm.
The air conditioner comprises the air conditioner indoor unit.
Claims (6)
1. The air conditioner volute tongue comprises a volute tongue body (100), wherein an air guide surface is arranged on the volute tongue body (100), a plurality of flow guide ribs (110) are arranged on the air guide surface at intervals along the length direction of the volute tongue body (100), and a flow guide groove (120) is formed between any two adjacent flow guide ribs (110); the method is characterized in that: the diversion trench (120) is a spiral trench or an inclined trench; when the diversion trench (120) is an inclined trench, an included angle theta between the diversion rib (110) and the cross section of the volute tongue body (100) is an acute angle; the wind-guiding surface is of a U-shaped structure and comprises a first curved surface section (101), a second curved surface section (102) and a third curved surface section (103) which are connected together in a smooth transition mode in sequence, wherein the ratio of the arc radiuses of the first curved surface section (101), the second curved surface section (102) and the third curved surface section (103) is 40-50: 14-17: 85-92 parts; the diversion trenches (120) are mutually parallel; the volute tongue body (100) is further provided with a volute tongue wind-guiding top surface (130) which is in smooth transition connection with the wind-guiding surface, the volute tongue wind-guiding top surface (130) is provided with an inclined rib plate (140) along the length direction of the volute tongue body (100), the upper end of the inclined rib plate (140) is positioned at the upper side of the wind-guiding surface, and an included angle gamma between the inclined rib plate (140) and the volute tongue wind-guiding top surface (130) is an acute angle; one end of the guide rib (110) extends towards the inclined rib plate (140) and is connected with the inclined rib plate (140) in an arc transition mode; the arc radius of the arc transition structure connecting the guide rib (110) and the inclined rib plate (140) is 1 mm-3 mm; the included angle gamma between the inclined rib plate (140) and the volute tongue wind guide top surface (130) is 45-60 degrees.
2. An air conditioner volute tongue according to claim 1, wherein: the included angle theta between the flow guide rib (110) and the cross section of the volute tongue body (100) is 27-40 degrees.
3. An air conditioner volute tongue according to claim 1, wherein: the guide rib (110) is in arc transition connection with the air guide surface, and the height of the guide rib (110) is 1-3 mm.
4. An air conditioner volute tongue according to claim 3, wherein: rounded corners are led at edges on the guide ribs (110), and the radius of each rounded corner is 0.3-0.6 mm.
5. An indoor unit of an air conditioner comprises a volute (200), an indoor unit panel (300), a cross-flow fan (400), a C-shaped evaporator (500) and an indoor unit cover plate (600); the scroll casing (200) is arranged opposite to the indoor unit panel (300), the C-shaped evaporator (500) is arranged between the scroll casing (200) and the indoor unit panel (300), the cross-flow fan (400) is arranged between the scroll casing (200) and the C-shaped evaporator (500), the indoor unit cover plate (600) is arranged at the bottom of the indoor unit panel (300), and an indoor unit air outlet is formed between the indoor unit cover plate (600) and the bottom of the scroll casing (200); the method is characterized in that: further comprising an air conditioning volute tongue according to any one of claims 1 to 4; the volute tongue body (100) of the air conditioner volute tongue is arranged on the inner end of the indoor unit cover plate (600), and the air guide surface of the volute tongue body faces to the central position in the volute (200).
6. An air conditioner, characterized in that: an indoor unit of an air conditioner according to claim 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711052361.0A CN107576041B (en) | 2017-10-30 | 2017-10-30 | Air conditioner volute tongue, air conditioner indoor unit and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711052361.0A CN107576041B (en) | 2017-10-30 | 2017-10-30 | Air conditioner volute tongue, air conditioner indoor unit and air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107576041A CN107576041A (en) | 2018-01-12 |
| CN107576041B true CN107576041B (en) | 2024-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711052361.0A Active CN107576041B (en) | 2017-10-30 | 2017-10-30 | Air conditioner volute tongue, air conditioner indoor unit and air conditioner |
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| Country | Link |
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| CN (1) | CN107576041B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108954794B (en) * | 2018-08-31 | 2023-11-10 | 四川长虹空调有限公司 | Heat exchange assembly of air conditioner cross-flow fan |
| CN109307319A (en) * | 2018-11-16 | 2019-02-05 | 广东美的制冷设备有限公司 | Air conditioner indoor unit and air conditioner |
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| CN102042264A (en) * | 2009-10-10 | 2011-05-04 | 珠海格力电器股份有限公司 | Volute tongue with bionic structure and volute using same |
| CN102269169A (en) * | 2010-06-02 | 2011-12-07 | 珠海格力电器股份有限公司 | Through-flow fan and air-conditioner provided with same |
| CN102734866A (en) * | 2011-04-13 | 2012-10-17 | 珠海格力电器股份有限公司 | Indoor air conditioner and operation control method thereof |
| CN204900339U (en) * | 2015-08-25 | 2015-12-23 | 宁波方太厨具有限公司 | Fan snail tongue |
| CN105757791A (en) * | 2014-12-18 | 2016-07-13 | 宁波奥克斯空调有限公司 | Indoor unit of air conditioner |
| CN206094309U (en) * | 2016-09-20 | 2017-04-12 | Tcl空调器(中山)有限公司 | Air conditioner and air conditioner |
| CN207335096U (en) * | 2017-10-30 | 2018-05-08 | 四川长虹空调有限公司 | Air-conditioning volute tongue, air conditioner room unit and air conditioner |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4873845B2 (en) * | 2004-10-01 | 2012-02-08 | 三菱電機株式会社 | Air conditioner |
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2017
- 2017-10-30 CN CN201711052361.0A patent/CN107576041B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042264A (en) * | 2009-10-10 | 2011-05-04 | 珠海格力电器股份有限公司 | Volute tongue with bionic structure and volute using same |
| CN102269169A (en) * | 2010-06-02 | 2011-12-07 | 珠海格力电器股份有限公司 | Through-flow fan and air-conditioner provided with same |
| CN102734866A (en) * | 2011-04-13 | 2012-10-17 | 珠海格力电器股份有限公司 | Indoor air conditioner and operation control method thereof |
| CN105757791A (en) * | 2014-12-18 | 2016-07-13 | 宁波奥克斯空调有限公司 | Indoor unit of air conditioner |
| CN204900339U (en) * | 2015-08-25 | 2015-12-23 | 宁波方太厨具有限公司 | Fan snail tongue |
| CN206094309U (en) * | 2016-09-20 | 2017-04-12 | Tcl空调器(中山)有限公司 | Air conditioner and air conditioner |
| CN207335096U (en) * | 2017-10-30 | 2018-05-08 | 四川长虹空调有限公司 | Air-conditioning volute tongue, air conditioner room unit and air conditioner |
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| Publication number | Publication date |
|---|---|
| CN107576041A (en) | 2018-01-12 |
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