CN107367045B - Noise reduction structure of air outlet equipment and air conditioner - Google Patents
Noise reduction structure of air outlet equipment and air conditioner Download PDFInfo
- Publication number
- CN107367045B CN107367045B CN201710609416.7A CN201710609416A CN107367045B CN 107367045 B CN107367045 B CN 107367045B CN 201710609416 A CN201710609416 A CN 201710609416A CN 107367045 B CN107367045 B CN 107367045B
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- fan blade
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- air flow
- airflow
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- 230000009467 reduction Effects 0.000 title abstract description 11
- 210000000988 bone and bone Anatomy 0.000 claims description 10
- 238000007664 blowing Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 230000003116 impacting effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/24—Means for preventing or suppressing noise
- F24F2013/247—Active noise-suppression
Abstract
The invention provides a noise reduction structure of air outlet equipment and an air conditioner, wherein the air outlet equipment comprises: fan blades and a heat exchanger; the number of the heat exchangers is more than two, the two heat exchangers are connected with each other, an air flow channel is formed between the two heat exchangers which are connected with each other, and air flow can be blown to the fan blade from the outlet of the air flow channel; and a flow guide part is arranged between the outlet of the airflow channel and the fan blade and used for reducing the flow speed of the airflow flowing from the airflow channel to the fan blade. The invention has the advantages of reasonable design, simple structure and convenient installation, and can reduce the airflow velocity of the impact fan blade, thereby reducing the rotation noise of the fan blade.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to a noise reduction structure of air outlet equipment and an air conditioner.
Background
With the continuous progress of science and technology and the increasing level of living of people, air conditioning has become one of the most important household appliances in people's daily life.
In the existing air conditioner, gaps formed at the joints of adjacent heat exchangers are smaller, air flows easily flow into the gaps from the positions with smaller windage nearby the gaps, and flow out of the gaps at a larger flow speed, impact rotating fan blades, and generate higher rotating noise.
Disclosure of Invention
The invention mainly aims to provide a noise reduction structure of air outlet equipment and an air conditioner, which can reduce the airflow velocity of air impacting fan blades, thereby reducing the rotation noise of the fan blades.
In one aspect, the present invention provides a noise reduction structure of an air outlet device, where the air outlet device includes: fan blades and a heat exchanger;
the number of the heat exchangers is more than two, the two heat exchangers are connected with each other, an airflow channel is formed between the two heat exchangers which are connected with each other, and airflow can be blown to the fan blade from an outlet of the airflow channel;
and a flow guide part is arranged between the outlet of the air flow channel and the fan blade and used for reducing the flow speed of the air flow flowing from the air flow channel to the fan blade.
Preferably, the air flow blown from the air flow channel to the fan blade forms a high-speed air flow area between the outlet of the air flow channel and the fan blade, and the flow guiding component is arranged in the high-speed air flow area;
and setting the projection width of the high-speed airflow area on a plane perpendicular to the airflow direction as delta, wherein the width direction is the direction perpendicular to the axis of the fan blade, and the maximum width W of the flow guiding component in the direction perpendicular to the airflow direction and the axis of the fan blade is less than or equal to delta.
Preferably, the minimum distance between the flow guiding component and the heat exchanger is a, wherein a is greater than 6 mm;
and/or the minimum distance between the flow guiding component and the fan blade is b, wherein b is greater than 6 mm.
Preferably, a plane perpendicular to the axis of the fan blade (1) cuts the flow guiding component (3) into a parallelogram shape;
the parallelogram has a side length L opposite to the airflow, and the side length extending along the airflow direction is H, H= (0.3-0.6) x L.
Preferably, the flow guiding component is a porous medium, so that the air flow blown out from the outlet of the air flow channel can flow to the fan blade through the holes on the porous medium.
Preferably, the porous medium has a porosity of greater than 0.8.
Preferably, the flow guiding component comprises a plurality of flow guiding sheets extending from the outlet of the airflow channel to the direction of the fan blade, the plurality of flow guiding sheets are sequentially arranged, and gaps are formed between two adjacent flow guiding sheets, so that the airflow can flow to the fan blade through the gaps.
Preferably, the two sides of the guide vane are a first side surface and a second side surface respectively;
the first side is an outwards protruding cambered surface, the second side is an inwards recessed cambered surface, and in the direction facing the fan blade, the first side and the second side intersect to form a pointed shape tapering towards the direction of the fan blade.
Preferably, the position of the guide vane opposite to the outlet of the air outlet channel is provided with a windward side;
the plane perpendicular to the axis of the fan blade is arranged to cut the guide vane into a second section, the shape of the windward side on the second section is arc-shaped, and the windward side is tangent to the first side surface and the second side surface.
Preferably, the second section of the guide vane is provided with a bone line, and the bone line is composed of midpoints of a plurality of line segments formed by cutting the second section by a plurality of planes perpendicular to the airflow direction;
and setting a straight line tangent to the bone line and the tangent point on the windward side as a first straight line, wherein an included angle between the first straight line and the air flow direction blowing from the air outlet port to the fan blade is theta, and theta is less than 15 degrees.
Preferably, the maximum width of the guide vane is d in a direction perpendicular to the airflow direction and the axis of the fan, the effective width of the guide member is T, and n×d/T < 0.4, wherein n is the number of the guide vanes.
Preferably, the air outlet device is provided with a shell, and the fan blades and the heat exchanger are arranged in the shell;
the inner wall of the shell is provided with a clamping groove, the flow guiding component is provided with a clamping part, and the flow guiding component is clamped on the clamping groove through the clamping part.
In still another aspect, the present invention provides an air conditioner, including a noise reduction structure of an air outlet device having any of the above technical features.
According to the noise reduction structure of the air outlet equipment, the technical scheme that the flow guide component is arranged between the outlet of the air flow channel and the fan blade and used for reducing the flow speed of air flow flowing from the air flow channel to the fan blade is adopted, so that the flow speed of the air flow impacting the fan blade can be reduced, and the rotation noise of the fan blade is further reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
FIG. 1 is a schematic diagram illustrating an embodiment of a noise reduction structure of an air-out device according to the present invention;
FIG. 2 is a schematic view of a second mode of the flow directing member of FIG. 1;
FIG. 3 is a second cross-sectional schematic view of the baffle of FIG. 2;
FIG. 4 is a schematic view of the installed state of the deflector of FIG. 1;
in the figure: 1. a fan blade; 2. a heat exchanger; 3. a flow guiding member; 31. a clamping part; 4. a high velocity gas flow region; 5. a deflector; 51. a first side; 52. a second side; 53. a windward side; 54. a second cross section; 55. a bone line; 56. a first straight line; 6. a slit; 7. a housing; 71. a clamping groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to specific embodiments of the present invention and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein.
As shown in fig. 1, a noise reduction structure of an air outlet device, the air outlet device includes: the fan blade 1 and the heat exchanger 2; the number of the heat exchangers 2 is more than two, and the two heat exchangers 2 are connected with each other, an air flow channel (not shown) is formed between the two heat exchangers 2 connected with each other, and air flow can be blown to the wind blade 1 from the outlet of the air flow channel; a flow guiding member 3 is arranged between the outlet of the air flow channel and the fan blade 1 for reducing the flow velocity of the air flow flowing from the air flow channel to the fan blade 1. Therefore, when the air flow is blown out from the outlet of the air flow channel at a higher speed, the air flow flows through the flow guide component 3, so that the flow speed is low, and the rotating noise generated by blowing the air flow with a low speed to the fan blade 1 is small, so that the effect of reducing the rotating noise of the fan blade 1 is achieved.
Specifically, as shown in fig. 1, the air flow blown from the air flow passage to the fan blade 1 forms a high-speed air flow zone 4 between the outlet of the air flow passage and the fan blade; the flow guiding member 3 is arranged inside the high-speed airflow zone 4. Let the projection width of the high-speed air flow area 4 on the plane perpendicular to the air flow direction be delta, wherein the width direction is the direction perpendicular to the axis of the fan blade 1, and the maximum width W of the flow guiding component 3 in the direction perpendicular to both the air flow direction and the axis of the fan blade 1 is less than or equal to delta. By adopting the design scheme, the miniaturized design requirement of the flow guiding component 3 can be met, the cost is further reduced, and meanwhile, the utilization rate of the flow guiding component 3 can be improved.
In particular, the minimum distance between the flow guiding member 3 and the heat exchanger 2 is a, where a is greater than 6 mm, preferably 10 to 20 mm may be used. In this way, the phenomenon that the heat of the heat exchanger 2 damages the flow guiding component 3 or water drops on the surface of the heat exchanger 2 drop on the flow guiding component 3 to cause the airflow belt water passing through the flow guiding component 3 to blow to the fan blade 1 can be prevented from occurring due to the fact that the flow guiding component 3 is too close to the heat exchanger 2.
In particular, the minimum distance between the flow guiding member 3 and the fan blade 1 is b, wherein b is greater than 6 mm, and preferably 10 to 20 mm can be used. This prevents the flow guiding member 3 from being too close to the heat exchanger 2, which may cause turbulence in the air flow flowing from the flow guiding member 3 to the fan blade 1.
Specifically, the plane perpendicular to the axis of the fan blade forms a first cross section of a parallelogram, the side length of the parallelogram opposite to the air flow is L, and the side length extending along the air flow direction is H, H= (0.3-0.6) x L. The energy loss of the air flow can be reduced by using the design of the proportion proved by experiments.
Two alternatives of the flow guiding element 3 are described below
First mode
The flow guiding member 3 is a porous medium, such as a sponge, so that the air flow blown out from the outlet of the air flow channel can flow to the fan blade 1 through the holes on the porous medium. Wherein the porosity of the porous medium is greater than 0.8 to ensure the flux of the gas stream. The definition of porosity is not explained here, since porosity is an intrinsic parameter of the porous medium itself.
Second mode
As shown in fig. 2, the flow guiding member 3 includes a plurality of flow guiding sheets 5 extending from the outlet of the air flow channel toward the fan blade 1, the plurality of flow guiding sheets 5 are sequentially arranged, and a gap 6 is formed between two adjacent flow guiding sheets 5, so that the air flow can flow to the fan blade 1 through the gap 6. The guide vane 5 may be made of a wear-resistant material (such as metal), but is not limited thereto.
Specifically, as shown in fig. 3, the two sides of the deflector 5 are a first side 51 and a second side 52, respectively; the first side surface 51 is an outwards protruding arc surface, the second side surface 52 is an inwards recessed arc surface, and in the direction towards the fan blade 1, the first side surface 51 and the second side surface 52 intersect to form a pointed shape which tapers towards the direction of the fan blade 1. The guiding of the air flow in the slot 6 by the curved first and second sides 51, 52 thus enables to reduce the flow velocity of the air flow by changing the direction of the air flow constantly and by friction between the first and second sides 51, 52 and the air flow.
Further, as shown in fig. 3, a position on the guide vane 5 opposite to the outlet of the air outlet channel is provided with a windward side 53; the plane perpendicular to the axis of the fan blade 1 is set to cut the flow deflector 5 into a second section 54, the windward side 53 on the second section 54 is arc-shaped, and the windward side 53 is tangent to both the first side 51 and the second side 52. This allows the air flow blown out from the outlet of the air outlet passage to smoothly enter the slit 6, avoiding blocking it.
More preferably, as shown in fig. 3, the second section 54 of the deflector 5 has a bone line 55, and the bone line 55 is formed by midpoints of a plurality of line segments formed by a plurality of planes perpendicular to the airflow direction and cutting the second section 54. A straight line tangent to the bone line 55 and having a tangent point on the windward side 53 is set as a first straight line 56, and an angle between the first straight line 56 and the direction of the air flow from the air outlet port to the fan blade 1 is set as θ, where θ is less than 15 °. By adopting the design scheme, the resistance of the windward side 53 to the air flow blown out from the outlet of the air outlet channel can be further reduced, and the air flow can be circulated more smoothly.
As an embodiment, as shown in fig. 2, the maximum width of the guide vane 5 is d, the effective width of the guide member 3 is L, n×d/L < 0.4, in the direction perpendicular to both the airflow direction and the axis of the fan 1, where n is the number of guide vanes. Wherein the widths L of the guide parts are on the same plane, and the maximum width of the guide sheet 5 is the sum of the widths d and the widths between the guide sheets. By adopting the technical scheme, the ventilation rate of the flow guide part 3 can be ensured, and throttling of air flow is avoided.
As an embodiment, as shown in fig. 4, the air outlet device has a housing 7, and the fan blades 1 and the heat exchanger 2 are both disposed in the housing 7; the inner wall of the housing 7 is provided with a clamping groove 71, the flow guiding component 3 is provided with a clamping part 31, and the flow guiding component 3 is clamped on the clamping groove 71 through the clamping part 31. This can facilitate the installation of the flow guiding member 3.
In still another aspect, the present invention provides an air conditioner, including the noise reduction structure of the air outlet device described in the above embodiments.
The embodiment of the invention has the advantages of reasonable design, simple structure and convenient installation, and can reduce the airflow velocity of the impact fan blade, thereby reducing the rotation noise of the fan blade.
The above description is only an example of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (8)
1. The utility model provides a noise structure of making an uproar falls in air-out equipment which characterized in that:
the air-out equipment includes: a fan blade (1) and a heat exchanger (2);
the number of the heat exchangers (2) is more than two, the two heat exchangers (2) are connected with each other, an airflow channel is formed between the two heat exchangers (2) which are connected with each other, and airflow can be blown to the fan blade (1) from an outlet of the airflow channel;
a flow guiding component (3) is arranged between the outlet of the air flow channel and the fan blade (1) and is used for reducing the flow speed of the air flow flowing from the air flow channel to the fan blade (1);
the air flow blown to the fan blade (1) from the air flow channel forms a high-speed air flow area (4) between the outlet of the air flow channel and the fan blade (1), and the flow guiding component (3) is arranged inside the high-speed air flow area (4);
setting the projection width of the high-speed airflow area (4) on a plane perpendicular to the airflow direction as delta, wherein the width direction is a direction perpendicular to the axis of the fan blade (1), and the maximum width W of the flow guiding component (3) in the direction perpendicular to the airflow direction and the axis of the fan blade (1) is less than or equal to delta;
the flow guiding component (3) comprises a plurality of flow guiding sheets (5) extending from the outlet of the air flow channel to the direction of the fan blade (1), the plurality of flow guiding sheets (5) are sequentially arranged, and gaps (6) are formed between two adjacent flow guiding sheets (5), so that air flow can flow to the fan blade (1) through the gaps (6);
the two sides of the guide vane (5) are respectively provided with a first side surface (51) and a second side surface (52);
the first side surface (51) is an outwards protruding cambered surface, the second side surface (52) is an inwards recessed cambered surface, and in the direction towards the fan blade (1), the first side surface (51) and the second side surface (52) intersect to form a pointed shape which tapers towards the direction of the fan blade (1);
the position of the guide vane (5) opposite to the outlet of the airflow channel is provided with a windward surface (53);
the plane perpendicular to the axis of the fan blade (1) is arranged to cut the guide vane (5) into a second section (54), the windward side (53) on the second section (54) is arc-shaped, and the windward side (53) is tangent to the first side (51) and the second side (52);
the flow guide component (3) is a porous medium, so that air flow blown out from the outlet of the air flow channel can flow to the fan blade (1) through holes in the porous medium.
2. The noise reducing structure of an air outlet apparatus according to claim 1, wherein:
the minimum distance between the flow guiding component (3) and the heat exchanger (2) is a, wherein a is more than 6 mm;
and/or the minimum distance between the flow guiding component (3) and the fan blade (1) is b, wherein b is greater than 6 mm.
3. The noise reducing structure of an air outlet apparatus according to claim 1, wherein:
the first section shape of the flow guide part (3) cut by the plane perpendicular to the axis of the fan blade (1) is a parallelogram;
the parallelogram has a side length L opposite to the airflow, and the side length extending along the airflow direction is H, H= (0.3-0.6) x L.
4. The noise reducing structure of an air outlet apparatus according to claim 1, wherein:
the porous medium has a porosity greater than 0.8.
5. The noise reducing structure of an air outlet apparatus according to claim 1, wherein:
a bone line (55) is arranged on the second section (54) of the guide vane (5), and the bone line (55) is composed of midpoints of a plurality of line segments which are formed by cutting the second section (54) by a plurality of planes perpendicular to the airflow direction;
and setting a straight line tangent to the bone line (55) and the tangent point on the windward side (53) as a first straight line (56), wherein an included angle between the first straight line (56) and the air flow direction blowing from the air flow channel to the fan blade is theta, wherein theta is less than 15 degrees.
6. The noise reducing structure of an air outlet apparatus according to claim 1, wherein:
in the direction perpendicular to the airflow direction and the axis of the fan blade (1), the maximum width of the guide vane (5) is d, the effective width of the guide component is T, and n multiplied by d/T is less than 0.4, wherein n is the number of the guide vanes (5).
7. A noise reducing structure of an air outlet device according to any one of claims 1 to 3, wherein:
the air outlet equipment is provided with a shell (7), and the fan blades (1) and the heat exchanger (2) are arranged in the shell (7);
the inner wall of the shell (7) is provided with a clamping groove (71), the flow guide component (3) is provided with a clamping part (31), and the flow guide component (3) is clamped on the clamping groove (71) through the clamping part (31).
8. An air conditioner, characterized in that:
noise reducing structure comprising an air outlet device according to any of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710609416.7A CN107367045B (en) | 2017-07-25 | 2017-07-25 | Noise reduction structure of air outlet equipment and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710609416.7A CN107367045B (en) | 2017-07-25 | 2017-07-25 | Noise reduction structure of air outlet equipment and air conditioner |
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| Publication Number | Publication Date |
|---|---|
| CN107367045A CN107367045A (en) | 2017-11-21 |
| CN107367045B true CN107367045B (en) | 2024-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710609416.7A Active CN107367045B (en) | 2017-07-25 | 2017-07-25 | Noise reduction structure of air outlet equipment and air conditioner |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06307660A (en) * | 1993-04-26 | 1994-11-01 | Matsushita Electric Ind Co Ltd | Air conditioner |
| CN1107563A (en) * | 1993-09-29 | 1995-08-30 | 三菱电机株式会社 | Separate-type air conditioner |
| CN1206813A (en) * | 1997-06-23 | 1999-02-03 | 运载器有限公司 | Flow stabilizer for transversal fan |
| JP2004132578A (en) * | 2002-10-09 | 2004-04-30 | Mitsubishi Heavy Ind Ltd | Air conditioner |
| CN207019258U (en) * | 2017-07-25 | 2018-02-16 | 珠海格力电器股份有限公司 | The noise reducing structure and air-conditioning of air outlet device |
-
2017
- 2017-07-25 CN CN201710609416.7A patent/CN107367045B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06307660A (en) * | 1993-04-26 | 1994-11-01 | Matsushita Electric Ind Co Ltd | Air conditioner |
| CN1107563A (en) * | 1993-09-29 | 1995-08-30 | 三菱电机株式会社 | Separate-type air conditioner |
| CN1206813A (en) * | 1997-06-23 | 1999-02-03 | 运载器有限公司 | Flow stabilizer for transversal fan |
| JP2004132578A (en) * | 2002-10-09 | 2004-04-30 | Mitsubishi Heavy Ind Ltd | Air conditioner |
| CN207019258U (en) * | 2017-07-25 | 2018-02-16 | 珠海格力电器股份有限公司 | The noise reducing structure and air-conditioning of air outlet device |
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| Publication number | Publication date |
|---|---|
| CN107367045A (en) | 2017-11-21 |
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