CN107328065B - Flow passage and air conditioner - Google Patents
Flow passage and air conditioner Download PDFInfo
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- CN107328065B CN107328065B CN201710609404.4A CN201710609404A CN107328065B CN 107328065 B CN107328065 B CN 107328065B CN 201710609404 A CN201710609404 A CN 201710609404A CN 107328065 B CN107328065 B CN 107328065B
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- 230000007423 decrease Effects 0.000 claims abstract description 7
- 230000003247 decreasing effect Effects 0.000 claims 1
- 239000012530 fluid Substances 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 2
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000007704 transition Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Classifications
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- 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
- F24F13/02—Ducting arrangements
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air-Flow Control Members (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention provides a through-flow channel and an air conditioner. The flow passage comprises an inlet (1) and an outlet (2), and the cross-sectional area from the inlet (1) to the outlet (2) increases or decreases along the flow direction of the air flow, wherein the ratio of the cross-sectional area S1 of the inlet (1) to the cross-sectional area S2 of the outlet (2) is more than or equal to 0.25 and less than or equal to S1/S2 and less than or equal to 1.5. According to the flow passage provided by the invention, the pressure loss of fluid in the flowing process in the flow passage can be reduced, and the air supply capacity of the air supply device is ensured.
Description
Technical Field
The invention belongs to the technical field of air conditioning, and particularly relates to a flow passage and an air conditioner.
Background
The flow passage is an important component of air supply, heat exchange, air conditioner and other equipment, and the good flow passage design can enable the equipment to convey higher air quantity, strengthen heat exchange, generate lower noise and improve product performance.
When the area of the cross section of the conventional flow passage changes along the flow direction of the fluid, the pressure loss of the fluid flow is inevitably accompanied, and when the pressure loss is overlarge, the air loss of the flow passage is overlarge, so that the air quantity of the air supply equipment is reduced too much, and the air supply capacity of the air supply equipment is affected.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to provide the overcurrent channel and the air conditioner, which can reduce the pressure loss of fluid in the flowing process of the fluid in the overcurrent channel and ensure the air supply capacity of the air supply equipment.
In order to solve the above problems, the present invention provides a flow passage comprising an inlet and an outlet, wherein the cross-sectional area from the inlet to the outlet increases or decreases along the flow direction of the air flow, and the ratio of the cross-sectional area S1 of the inlet to the cross-sectional area S2 of the outlet satisfies 0.25.ltoreq.S1/S2.ltoreq.1.5.
Preferably, 0.5.ltoreq.S1/S2.ltoreq.0.8 as the cross-sectional area of the inlet to the outlet increases.
Preferably, 1.1.ltoreq.S1/S2.ltoreq.1.4 as the cross-sectional area of the inlet to the outlet decreases.
Preferably, the cross-sectional shape of the inlet is the same as the cross-sectional shape of the outlet.
Preferably, the inlet has a rectangular, circular, oval or triangular cross-sectional shape.
Preferably, the cross-sectional shape of the inlet is different from the cross-sectional shape of the outlet.
Preferably, the inlet has a circular cross-sectional shape and the outlet has an elliptical, rectangular or triangular cross-sectional shape.
Preferably, the deflection angle θ of the air flow after the air flow flows from the inlet to the outlet satisfies 0 < θ+.40°.
Preferably, the deflection angle theta of the air flow after flowing from the inlet to the outlet is 15-30 degrees.
According to another aspect of the present invention, there is provided an air conditioner including a through-flow passage, which is the above-mentioned through-flow passage.
The flow passage provided by the invention comprises an inlet and an outlet, and the cross-sectional area from the inlet to the outlet increases or decreases along the flow direction of air flow, wherein the ratio of the cross-sectional area S1 of the inlet to the cross-sectional area S2 of the outlet is more than or equal to 0.25 and less than or equal to S1/S2 and less than or equal to 1.5. The cross-section area ratio range of the inlet and the outlet is limited by the flow passage, so that the fluid pressure loss flowing through the flow passage can be controlled in a smaller range, the problem of air flow retardation caused by overlarge internal resistance of the flow passage is avoided, the air supply quantity is improved, and the air supply capacity of the air supply equipment is ensured.
Drawings
FIG. 1 is a schematic view of an embodiment of an overcurrent channel;
fig. 2 is a graph showing the relationship between the inlet/outlet area ratio and the total pressure loss of the through-flow passage according to the embodiment of the present invention.
The reference numerals are expressed as:
1. an inlet; 2. and an outlet.
Detailed Description
The direction of the arrow in the figure is the direction of airflow.
Referring to fig. 1 and 2 in combination, according to an embodiment of the present invention, a flow passage includes an inlet 1 and an outlet 2, and a cross-sectional area of the inlet 1 to the outlet 2 increases or decreases in a flow direction of an air flow, wherein a ratio of the cross-sectional area S1 of the inlet 1 to the cross-sectional area S2 of the outlet 2 satisfies 0.25.ltoreq.s1/s2.ltoreq.1.5.
The cross-section area ratio range of the inlet 1 and the outlet 2 is limited by the flow passage, so that the fluid pressure loss flowing through the flow passage can be controlled in a smaller range, the problem of air flow retardation caused by overlarge internal resistance of the flow passage is avoided, the air supply quantity is improved, and the air supply capacity of the air supply equipment is ensured. Compared with the prior art, the ventilation channel designed by the invention can improve the air supply quantity of the air supply equipment by 5-10%.
Preferably, 0.5.ltoreq.S1/S2.ltoreq.0.8 as the cross-sectional area of the inlet 1 to the outlet 2 increases.
Preferably, 1.1.ltoreq.S1/S2.ltoreq.1.4 as the cross-sectional area of the inlet 1 to the outlet 2 decreases.
The abscissa in fig. 2 shows the ratio of the inlet area S1 to the outlet area S2, and the ordinate shows the total pressure loss generated after the fluid flows through the flow passage, and it is known that when the ratio of S1/S2 is between 0.25 and 1.5, the pressure loss of the flow passage is smaller, that is, in the design process, the inlet cross-sectional area of the fluid may be smaller than the outlet cross-sectional area or larger than the outlet cross-sectional area, but the inlet cross-sectional area S1 is too small, when the outlet cross-sectional area S2 is too large, the air flow easily flows back in the flow passage to affect the outflow flow, and when the inlet cross-sectional area S1 is too large and the outlet cross-sectional area S2 is too small, the phenomenon of "wind holding" is easily generated, so that the pressure loss is increased, and the outflow turbulence energy is increased, and abnormal noise is easily generated. Therefore, the through-flow channel determined by adopting the scheme of the invention can effectively solve or reduce the generation of the problems.
Preferably, the cross-sectional shape of the inlet 1 is the same as the cross-sectional shape of the outlet 2. The same means that the cross-sectional shape of the inlet 1 and the cross-sectional shape of the outlet 2 are the same and different in size, and a certain scale relationship of enlargement or reduction is formed between the two, for example, the cross-sectional shape of the inlet 1 is circular, the cross-sectional shape of the outlet 2 is also circular correspondingly, and when the cross-sectional shape of the inlet 1 is rectangular, the cross-sectional shape of the outlet 2 is also rectangular correspondingly, and the two are only different in size.
Preferably, the inlet 1 has a rectangular, circular, oval or triangular cross-sectional shape.
In another embodiment, the cross-sectional shape of the inlet 1 is different from the cross-sectional shape of the outlet 2. In this case, the cross-sectional shape of the inlet 1 gradually and smoothly transitions to the cross-sectional shape of the outlet 2 along the flow direction of the air flow, thereby realizing the variable cross-section of the flow passage. In the present embodiment, the cross-sectional shape of the inlet 1 is different from the cross-sectional shape of the outlet 2, and therefore, it is only necessary to ensure that the cross-sectional areas of both satisfy the above-described cross-sectional area ratio range.
Preferably, the inlet 1 has a circular cross-sectional shape and the outlet 2 has an elliptical, rectangular or triangular cross-sectional shape.
For example, when the cross-sectional shape of the inlet 1 is circular, the cross-sectional shape of the outlet 2 may be elliptical, rectangular, or the like, and the flow passage gradually transitions from the circular shape at the inlet 1 to the elliptical or rectangular shape at the outlet 2 along the flow direction of the air flow, realizing a variable cross-section.
Of course, the cross-sectional shape of the inlet 1 may be rectangular, and in this case, the shape of the outlet 2 may be designed as another rectangle different from the rectangular shape, or as another shape other than the rectangle.
Preferably, the deflection angle θ of the air flow after the air flow flows from the inlet 1 to the outlet 2 satisfies 0 < θ+.40°. The airflow deflection angle theta is formed by an included angle between a plane perpendicular to the airflow direction at the inlet 1 of the airflow channel and a plane perpendicular to the airflow direction at the outlet 2 of the airflow channel.
The airflow deflection angle theta is limited in the range, so that the airflow is smooth, backflow and pulsation are not easy to generate when the airflow flows in the flow passage, the flow resistance is reduced, and the occurrence of abnormality is avoided. After the air flow deflection angle is adopted, compared with an overflow channel in the prior art, the noise of the air supply equipment is reduced by 1-2 dB (A). More preferably, the offset angle θ of the air flow after the air flow flows from the inlet 1 to the outlet 2 satisfies 15.ltoreq.θ.ltoreq.30°.
According to an embodiment of the invention, the air conditioner comprises a through-flow channel, and the through-flow channel is the through-flow channel.
It will be readily appreciated by those skilled in the art that the above advantageous ways can be freely combined and superimposed without conflict.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention. The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (9)
1. A flow-through channel, characterized by comprising an inlet (1) and an outlet (2), the cross-sectional area of the inlet (1) to the outlet (2) increasing or decreasing in the flow direction of the gas flow, wherein the ratio of the cross-sectional area S1 of the inlet (1) to the cross-sectional area S2 of the outlet (2) satisfies 0.25.ltoreq.s1/s2.ltoreq.1.5;
the deflection angle theta of the air flow flowing from the inlet (1) to the outlet (2) meets 0 < theta less than or equal to 40 degrees; the airflow deflection angle theta is an included angle formed between a plane perpendicular to the airflow flowing direction at the inlet (1) of the airflow passage and a plane perpendicular to the airflow flowing direction at the outlet (2) of the airflow passage.
2. The flow-through channel according to claim 1, characterized in that 0.5 ∈s1/s2 ∈0.8 when the cross-sectional area of the inlet (1) to the outlet (2) increases.
3. The flow-through channel according to claim 1, characterized in that 1.1.ltoreq.s1/s2.ltoreq.1.4 as the cross-sectional area of the inlet (1) to the outlet (2) decreases.
4. The flow channel according to claim 1, characterized in that the cross-sectional shape of the inlet (1) is the same as the cross-sectional shape of the outlet (2).
5. The flow channel according to claim 4, characterized in that the cross-sectional shape of the inlet (1) is rectangular, circular, oval or triangular.
6. The flow channel according to claim 1, characterized in that the cross-sectional shape of the inlet (1) is different from the cross-sectional shape of the outlet (2).
7. The flow channel according to claim 6, characterized in that the cross-sectional shape of the inlet (1) is circular and the cross-sectional shape of the outlet (2) is oval, rectangular or triangular.
8. The flow-through channel according to claim 1, characterized in that the gas flow deflection angle θ of the gas flow after the gas flow from the inlet (1) to the outlet (2) satisfies 15 θ+.ltoreq.30°.
9. An air conditioner comprising a flow-through channel, characterized in that the flow-through channel is the flow-through channel according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710609404.4A CN107328065B (en) | 2017-07-25 | 2017-07-25 | Flow passage and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710609404.4A CN107328065B (en) | 2017-07-25 | 2017-07-25 | Flow passage and air conditioner |
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| Publication Number | Publication Date |
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| CN107328065A CN107328065A (en) | 2017-11-07 |
| CN107328065B true CN107328065B (en) | 2023-05-23 |
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| CN201710609404.4A Active CN107328065B (en) | 2017-07-25 | 2017-07-25 | Flow passage and air conditioner |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102295455B1 (en) | 2018-03-07 | 2021-08-30 | 지디 미디어 에어콘디셔닝 이큅먼트 씨오 엘티디 | air conditioner intermediate air duct and air conditioner |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895841A (en) * | 2015-04-30 | 2015-09-09 | 中国科学院工程热物理研究所 | Rectifier, runner structure, combined gas compressor and aviation gas turbine engine |
| CN105673097A (en) * | 2016-04-15 | 2016-06-15 | 中国科学院工程热物理研究所 | Low-admission degree partial admission turbine interstage transition section structure and designing method thereof |
| CN205561196U (en) * | 2016-03-18 | 2016-09-07 | 福建省雾精灵环境科技有限公司 | Automatic regulation spout to environmental purification device |
| CN106196537A (en) * | 2016-08-17 | 2016-12-07 | 珠海格力电器股份有限公司 | Air duct structure and air conditioner with same |
| CN206973847U (en) * | 2017-07-25 | 2018-02-06 | 珠海格力电器股份有限公司 | Overflowing channel and air conditioner |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6533657B2 (en) * | 2001-05-11 | 2003-03-18 | Lockheed Martin Corporation | Low noise duct system |
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2017
- 2017-07-25 CN CN201710609404.4A patent/CN107328065B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104895841A (en) * | 2015-04-30 | 2015-09-09 | 中国科学院工程热物理研究所 | Rectifier, runner structure, combined gas compressor and aviation gas turbine engine |
| CN205561196U (en) * | 2016-03-18 | 2016-09-07 | 福建省雾精灵环境科技有限公司 | Automatic regulation spout to environmental purification device |
| CN105673097A (en) * | 2016-04-15 | 2016-06-15 | 中国科学院工程热物理研究所 | Low-admission degree partial admission turbine interstage transition section structure and designing method thereof |
| CN106196537A (en) * | 2016-08-17 | 2016-12-07 | 珠海格力电器股份有限公司 | Air duct structure and air conditioner with same |
| CN206973847U (en) * | 2017-07-25 | 2018-02-06 | 珠海格力电器股份有限公司 | Overflowing channel and air conditioner |
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| CN107328065A (en) | 2017-11-07 |
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