CN1253680C - Method for blowing-in of jet-flow impact type air conditioner - Google Patents
Method for blowing-in of jet-flow impact type air conditioner Download PDFInfo
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- CN1253680C CN1253680C CN 200410021511 CN200410021511A CN1253680C CN 1253680 C CN1253680 C CN 1253680C CN 200410021511 CN200410021511 CN 200410021511 CN 200410021511 A CN200410021511 A CN 200410021511A CN 1253680 C CN1253680 C CN 1253680C
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Abstract
The present invention relates to a new method for blowing wind by air, which belongs to the technical field of air conditioning engineering. The present invention is characterized in that after wind blowing airflow is ejected from a wind opening, the ejection flow is mutual impacted, or is impacted with an obstacle, partial kinetic energy is consumed, and the attenuation of ejection flow speed is accelerated. The present invention has the advantages that the wind speed near a human body can be reduced under the precondition of ensuring sufficient wind blowing quantity when a wind blowing opening is near the human body; thereby, the potential wind blowing feeling is reduced; the human body's heat comfort feeling is improved. The present invention is suitable for air conditioning occasions with close range wind blowing and high comfort degree requirements, such as station air conditioners, car air conditioners, etc. The wind blowing comfort and the indoor air quality can be improved.
Description
Technical field
The invention belongs to air conditioner technology field, relate to a kind of method of closely air-conditioning air-supply.
Background technology
At present air-conditioning has been widely used in the every nook and cranny in the world, its to the comfortable of human body with healthy, socioeconomic fast development has been brought into play and will continue bringing into play very important effect.The usage quantity that is accompanied by air-conditioning is increasing, scope more and more widely, produced a series of problems that come into the picture.According to the factual survey of Schiller,, still have at least 40% people and feel too cold or too hot even air-conditioning can maintain indoor thermal environment in so-called " comfort zone " scope to 10 office buildings.Together with the research report of Croome and Rollason and Harris as can be seen, people's complaint mainly concentrates on the immobilising problem of room air, because investigation is based on actual indoor occupant, therefore have reason to think that people wish to feel a certain amount of moving air in thirsting in their working environment.The new wind of tradition air-conditioning is generally sent into indoor after hot wet process again, the new wind of high humility is polluted in carrying the way easily, and send into indoor after also will with just can deliver to the workspace after room air mixes, in these new wind, have only about 1% to be sucked by the people, the new wind of 99% processing is not utilized, not only caused huge waste, can not give full play to new wind scorpion, because the consideration of energy savings, the air-tightness of building improves greatly, bring room ventilation rate deficiency thus, cause the life that takes place frequently of room air pollution event frequency, the normal appearance has a headache, dry cough, dry skin is itched, dizziness and nausea, absent minded and to symptoms such as smell sensitivities, this problem has caused experts and scholars' extensive attention, and has proposed ill building (Sick Building) and Cure of Sick Building Syndrome (SBS, Sick Building Syndrome) notion, indoor air quality is not good to be the principal element that causes Cure of Sick Building Syndrome.
Under the outstanding day by day background of above-mentioned contradiction, produced the notion of task air conditioning, advocate a kind of more personalized air supply mode.Task air conditioning to each station local relief, has been strengthened the environment control in station district under certain background air conditioner surroundings, by individual's adjusting, the thermal environment in the station district is changed in very wide scope, thereby satisfy the different hotness requirement of individual.Because fresh air is directly delivered to people's respiratory region, improve the quality of indoor occupant institute breathe air and reduced the waste of new wind, saved the energy.
The jet characteristics of conventional air supply mode are the jet concentration of energy, and velocity attenuation is slow, helps the air-supply of large space.The air-conditioning air-supply time easily makes the people produce blowing feeling, and the method for improvement is to rely on remote air-supply, and jet speed behind intelligent's the workspace is reduced to below the sanitary standard permissible value.But when station was blown, because the distance between air outlet and the human body is very near, for guaranteeing certain air output, near the wind speed the human body was often too high, causes blowing feeling, causes the human body discomfort.Therefore, must seek a kind of method, make air-supply air flow stream air outlet after, slow down as early as possible, jet arrives near can satisfy heat the human body comfortableness requirement.
Find by literature search: " swirl diffuser that is used for air conditioning terminal " (patent No. 02215749.2) discloses a kind of air-conditioning air outlet, can regulate wind direction by blade that 30 °～45 ° of angles of inclination are arranged and the air port diffusing stream circle all around of being located at the air port, because the air quantity scope is big, can increase the distance of air-supply, be applicable to the place that floor height is higher or the space is bigger.Yet if be applied in the task air conditioning, the distance between air outlet and the people is in 0.5～1.0 meter scope, because the far firing range of swirl diffuser, stream range is big, can increase potential blowing feeling greatly; Document " Localized comfort control with a desktop task conditioning system:laboratory and field measurements " (ASRAE Transactions:Symposia) illustrates that existing desktop task air conditioning representative products is the PEM system of Johnson Control company.The air outlet of PEM system is common air grille, and the air port is of a size of 58mm * 98mm.By PEM experimental measurement and application survey are found, can satisfy most people's thermal comfort requirement, and more traditional air-conditioning can provide wideer adjustable range and the comfortableness of Geng Gao, yet the problem that still has blowing feeling, total some people's complaint has blowing feeling under certain condition, found through experiments the air port and will bring blowing feeling under the situation of medium air quantity, be original 3 times even the area in air port increased, the problem of blowing feeling still exists.Though simple increase air port area helps to reduce blowing feeling, can take the more work space, increase production cost.Simultaneously simple increase air port, the non-dimensional velocity of jet not have to change substantially, reduce blowing feeling as if wanting under the constant condition of air quantity, must manage to increase the velocity attenuation of jet after leaving the air port.In the PEM system of Johnson Control company, jet all directly blows to the worker behind air outlet, increased potential blowing feeling so undoubtedly.
Summary of the invention
The objective of the invention is to overcome the deficiency that above-mentioned prior art exists, the blowing feeling problem that produces when solving closely air-conditioning air-supply provides a kind of air supply method, and the air-supply air velocity is decayed fast.The present invention proposes a kind of impinging jet formula air-conditioning air supply method, and after the air-flow of blowing penetrated from the air port, jet self part was clashed into mutually or clashed into barrier, and the bump of air-flow has consumed a part of kinetic energy, the pick up speed decay.After the air-supply air-flow blows out the air port, the mutual collision friction of two parts air-flow up and down, consume the kinetic energy of air-flow 20%～50%, make the speed consumption of air-flow, converge the air-flow that becomes one horizontal direction, greatly reduce the speed that air-flow arrives the workspace at vertical direction, mutual collision usefulness by air-flow, can guarantee promptly that under identical air port area jet directly blows to the personnel of workspace, can keep lower wind speed again, reduce potential blowing feeling.Air-flow after the head-on collision belongs to strong turbulent condition, and flow perturbation is strong, has changed the pulse characteristic of mechanical air supply, more approaches natural wind, helps improving the human thermal comfort sensation.
The present invention is achieved by the following technical solutions, one, by air supply plenum chamber 1, blinds air outlet 2 with can regulate blinds 3 and constitute airflow counter-collision formula air-conditioning air outlet, by blinds regulate the air port up and down two air-outlet parts area than and flow angle, cause air to penetrate the air port after air-flow self produce bump mutually.The head-on collision of this air-flow can be from different directions, as the head-on collision of the top and the bottom of air-flow, about part head-on collision or circumference head-on collision etc., its objective is the kinetic energy of eliminating jet as early as possible, reduce effluxvelocity, the acceleration jet spreads, and improves the comfortableness and the air quality of space environment; Its two mode that adopts the thing of placing obstacles in jet the place ahead, by air supply plenum chamber 1, blinds air outlet 2, can regulate blinds 3 and barrier (as baffle plate, annulus, orifice plate etc.) 4 and constitute airflow strikes formula air-conditioning air outlets, after the air-supply air-flow is sent the air port, air-flow and barrier produce bump, air-flow behind the bump streams and breaks the barriers, and in this course, air velocity obviously reduces, so that when arriving near the human body, can not produce blowing feeling; They are three years old, utilize air supply plenum chamber 1, blinds air outlet 2, can regulate blinds 3 and reflecting plate 5 and can form air-flow bounce-back formula air-conditioning air outlet, it is characterized in that: constitute air-supply arrangement, air-supply air-flow directive reflecting plate, with the zone at 35 °～45 ° angle bounce-back the Huis place, the air velocity that reflects obviously reduces then.
Effect of the present invention and benefit are when air outlet is very near apart from human body, under the prerequisite that guarantees enough air outputs, can make near the wind speed of human body lower, thereby reduce potential blowing feeling, improve people's hotness.Air-flow after the head-on collision belongs to strong turbulent condition, and flow perturbation is strong, has changed the pulse characteristic of mechanical air supply, more approaches natural wind, helps improving the human thermal comfort sensation.
The present invention is applicable to closely air-supply, the air-conditioning occasion that comfort level is had relatively high expectations, can improve the comfortableness and the indoor air quality of air-supply, as task air conditioning, air conditioning for automobiles etc., the particularly air-supply of task air conditioning can cause a lower velocity field near human body when guaranteeing to satisfy the air output requirement, avoid human body to produce blowing feeling, satisfy the comfortableness requirement.
Description of drawings
Fig. 1 is an airflow counter-collision formula air-conditioning air outlet elevational schematic view.
Fig. 2 is an airflow strikes formula air-conditioning air outlet generalized section.
Fig. 3 is an air-flow bounce-back formula air-conditioning air outlet elevational schematic view.
Fig. 4 is an airflow counter-collision formula air-conditioning air outlet generalized section.
Fig. 5 is an airflow counter-collision formula air-conditioning air outlet floor map.
Among the figure: 1 air supply plenum chamber, 2 blinds air outlets, 3 can regulate blinds, 4 barriers, 5 reflecting plates (as the enclosing around the desk).
The specific embodiment
Be described in detail specific embodiments of the invention below in conjunction with technical scheme and accompanying drawing.
Specific embodiment:
At the long 100mm of air supply plenum chamber * wide 120mm * high 265mm, on the wide 100mm of air grille * high 100mm is installed, the air port blade can 30～45 the degree between adjusting angle.By the air port head-on collision of two parts air-flow up and down, eliminate the kinetic energy of jet 25%～45%, can make the wind speed that arrives human body reduce by 10%～30%.At distance air grille front end 50mm place a baffle plate is set, wide 60mm * high 200mm, air-flow that blows out from the air port and baffle plate bump consume part kinetic energy, and the air velocity that arrives human body is reduced.By controllable register area size, the degree that can controlled wind speed reduces.
Claims (3)
1. impinging jet formula air-conditioning air supply method, be after the air-supply air-flow penetrates from the air port, jet self clashes into mutually or clashes into barrier, consumed a part of kinetic energy, can quicken the decay of effluxvelocity, form airflow counter-collision formula air-conditioning air outlet, it is characterized in that: air supply plenum chamber (1), blinds air outlet (2) and can regulate blinds (3) and constitute air-supply arrangement, regulate air port the area ratio and the flow angle of two air-outlet parts up and down by blinds, air-flow self produces bump mutually after causing air to penetrate the air port, the air port blade can be between the 30-45 degree adjusting angle.
2. a kind of impinging jet formula air-conditioning air supply method according to claim 1, employing is in the mode of the thing of placing obstacles near jet the place ahead, can form airflow strikes formula air-conditioning air outlet, it is characterized in that: air supply plenum chamber (1), blinds air outlet (2), can regulate blinds (3) and barrier (4) and constitute air-supply arrangement, after the air-supply air-flow is sent the air port, air-flow and barrier produce bump, and the air-flow behind the bump streams and breaks the barriers.
3. a kind of jets collision formula air-conditioning air supply method according to claim 1, can form air-flow bounce-back formula air-conditioning air outlet, it is characterized in that: air supply plenum chamber (1), blinds air outlet (2), can regulate blinds (3) and reflecting plate (5) and constitute air-supply arrangement, reflecting plate (5) is arranged on the place ahead of blinds air outlet (2), air-supply air-flow directive reflecting plate, with the zone at 35 °～45 ° angle bounce-back the Huis place, the air velocity that reflects obviously reduces then.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410021511 CN1253680C (en) | 2004-07-19 | 2004-07-19 | Method for blowing-in of jet-flow impact type air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410021511 CN1253680C (en) | 2004-07-19 | 2004-07-19 | Method for blowing-in of jet-flow impact type air conditioner |
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| Publication Number | Publication Date |
|---|---|
| CN1598429A CN1598429A (en) | 2005-03-23 |
| CN1253680C true CN1253680C (en) | 2006-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410021511 Expired - Fee Related CN1253680C (en) | 2004-07-19 | 2004-07-19 | Method for blowing-in of jet-flow impact type air conditioner |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BRPI0922541A2 (en) * | 2008-12-19 | 2018-05-29 | Kaip Pty Ltd | air circulation system diffuser |
| CN102200332B (en) * | 2011-05-11 | 2012-10-17 | 西安建筑科技大学 | Method for jet flow striking-type air supplying suitable for capsule hotel |
| CN102358306A (en) * | 2011-08-31 | 2012-02-22 | 西安飞豹科技发展公司 | Ventilated rain removal grating for train air-conditioning system |
| CN104633827A (en) * | 2014-11-26 | 2015-05-20 | 东华大学 | Optimized design method for impacting jet ventilation system |
| CN106052068A (en) * | 2016-06-21 | 2016-10-26 | 沈阳建筑大学 | Jet flow speed reduction dual-effect blind blade air port |
| CN107796079B (en) * | 2017-03-06 | 2023-04-25 | 江苏嘉合建设有限公司 | Top-feeding top-returning purifying ventilation system |
| CN110410929B (en) * | 2019-07-31 | 2021-04-09 | 宁波奥克斯电气股份有限公司 | Air conditioner and control method thereof |
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- 2004-07-19 CN CN 200410021511 patent/CN1253680C/en not_active Expired - Fee Related
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